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  • 3G fin machine VS 2G fin machine
    Since 2018, Better tech has introduced the 3rd Generation(3G) intelligent fin machine. Some new customers probabaly feel confused how to choose between 3G and 2G fin machines. Hope the following comparison can help our honorific clients buy the right fin machine. Same: Full set of fin production line including auto feeder, automatic fin stamping machine, servo fin cutting, lubricating system. Among of them, automatic uncoiler, cutting machine, lubricating system and fin molds are same. Difference: Fin Forming machine (host machine) 3G fin forming machine adds electrical and NC adjustment mold system on basis of 2G fin forming machine. 3G Fin Machine: When producing different height fins with the same mold (suitable for the same fin pitch and different heights), the data can be set on the display screen for quick positioning and easy operation which can saves the debugging mold time. 2G Fin machine: debugging molds by manual. 3G Fin Machine 2G Fin Machine

    2023 08/14

  • Vacuum brazed titanium plate bar coolers
    On basis of aluminum plate bar heat exchanger, titanium plate bar coolers have been successfully produced through research and development of 2 years. Depending on light weight, high strength, good thermal conductivity, compact structure, high heat transfer coefficient and good corrosion resistance, titanium plate fin heat exchangers have been widely used in aerospace, military, ocean engineering and more fields.

    2023 06/09

  • 3G Intelligent Fin Machine-Easily Adjust Fin Height
    The fin machine can produce different fins by changing the corresponding fin molds. No doubt, this is a big progress that saves the cost of purchasing machines when you need produce too many specification of fins. But meanwhile, machine users have to face a big problem, namely they need often replace and debug fin molds which is a skilled job. Even if for an experienced fin operator, he also has to spend 2 hours or so to finish the task. With the continuous research and development, the 3rd generation fin machine can easily adjust the fin height by control panel which needn`t spend much time by manual. This is an important milestone of fin machine development history, technology makes fin production easier. So far, the 3G intelligent fin machines have been successfully put into the market and entered into mass production period.

    2020 12/22

  • Double Servo Hole-punching Cutting Fin Machine
    Wuxi Better Technology Company specializes in supply of high quality fin machine and fin molds. Besides standard 300 series and 450 series fin machine, Better-Tech also dedicates to customized service and has gained great achievements. Better-Tech always keeps improving in high quality integrated heat exchanger fin solution which can meet or even exceed your expectation. The matched double servo hole-punching cutting fin machine can not only make holes successfully on turbulator fins but also achieve 2 strips to be produced at the same time. Automotive Engine Oil Cooler Fins -Fin Machine New Achievement

    2020 10/20

  • 50mm High Fin - Custom Fin Machine New Height
    Upon market's demands, Better-Tech continually challenge heat exchanger fin new height. At present, the max fin height can reach 50mm with 0.5mm thick aluminum material. 50mm height straight aluminum fin 40mm height plain aluminum fin Wuxi Better Technology Company specializes in supply of high quality fin machine and fin molds. Besides standard 300 series and 450 series fin machine, Better-Tech also dedicates to customized service and has gained great achievements. Better-Tech always keeps improving in high quality integrated heat exchanger fin solution which can meet or even exceed your expectation.

    2019 10/24

  • Safe Operation and Maintenance of Fin Machine
    Correctly operate on the fin forming machine which can effectively extend the service life of fin machine and fin tooling molds and maintain their good performance. The below are some precautions for use of fin machine. 1.The fin forming machine must be safely grounded to ensure security before connecting electricity. 2.Do not operate the fin machine if you aren't a trained operators. The fin producing machine operator need master the procedures, working principle and performance of fin machine before independent operating. 3. Carefully and meticulously operate the fin punching machine to avoid risk. 4. Check the parts lubricated such as CAM device, slide block, upper and lower guide rail every day. Oiling one time every 30 minutes. ISO VG32 or ISO VG 46 machine oil is recommended. 5.Check whether the belt is excessively worn, parallel, too tight or too loose for the surface of the belt weekly. Please adjust or replace the belt in time if it doesn't conform to standard. 6. Keep work table clean and good surrounding environment. 7. Check the quality of lubricating oil termly. Gear lubricating oil is replaced every three months, other lubricating oil every two months. 8. It is necessary to stop the fin molding machine immediately to check and maintenance if find abnormal or faults in the operation. If you have any question regarding operating the fin machine and fin forming dies, you may freely contact Better-Tech who has a professional team teach our clients how to produce high quality heat exchanger fins.

    2017 07/04

  • Better-Tech professionally supplies Eco-friendly Air-cooled and Air-heated Heat Exchangers
    Better-Tech mainly focuses on heat exchanging solutions which are divided into two scopes: cooling & heating. Air-Cooled Heat Exchangers: Aluminum plate-bar Heat Exchangers with high efficient, compact and light advantages have been widely applied in mining and construction machinery, gas compressor, motor vehicles, electric generator, air separation etc. Air-Heated Heat exchanger: Ambient Vaporizers , pressure building vaporizers for cryogenic gas application. These vaporizers adopt special star-shaped aluminum finned tubes as heat exchange key elements which can effectively absorb heat of ambient air and heat cryogenic gas such as LOX, LIN, LAR, LNG, LCO2, LPG into gaseous gas. These heat exchangers take good advantage of ambient air which are eco-friendly products and have been widely used in different industry fields. How to improve air-cooled and air-heated heat exchanger performance, Wuxi Better Technology company has been having continuous study and supplying high quality heat exchangers with the optimized design and configuration upon clients` parameter requirement.

    2019 08/03

  • Heat Exchanger Fin Mold's Rapid development-Integrated Blade instead of Distributed Blades
    Now, Chinese precision metal stamping molds are actively moving toward the international stage, to participate in international competition. Under such good industrial environment, Better-Tech focuses on the development of fin forming machine and fin stamping die which also gain great achievements. As the core part of fin forming mold, the blade is changed into integrated blade instead of previous distributed blades which benefits from the development of linear cutting technology. In the past, it could have hundreds of blades (teeth) for a set of fin mold. But now, it only needs a whole blade. For the fin tooling mold with the integral blade, it is not only easily fixed but also good fin forming with higher fin precision. In addition, Better Technology Co., Ltd also makes double and triplex monolithic blades for the too small or too big fin pitch which can ensure the good fin shape and high fin accuracy.

    2018 08/24

  • The Development Trend of Heat Exchanger Fin
    At present, heat exchangers with light weight are more and more popular. For example, aluminum plate fin heat exchanger is playing an important role in modern industry depending on light weight, compact construction and high heat exchange efficiency. How to make the heat exchanger lighter? It`s clear that the fin material is hereby required to be light under meeting pressure. Usually, aluminum/copper fins thickness for 0.5mm max, SS/ titanium fins thickness 0.2mm max. In fact, heat exchanger fin is becoming lighter and lighter with a trend as well with a good performance. Meanwhile, rapid growth of radiator fin demands also pushes fin forming machine`s development which is special machine to produce all kind of heat exchanger fins. Only for cutting off fins, it has experienced from manual operation, auto fin cutter to servo fin cutter. For the time being, servo fin cutting-off machines are being sold well because they`re more efficient, more precise, better shape.

    2017 12/07

  • Holiday Notification of China National Day
    To celebrate Chinese 70th National Day, Better Tech will be on holiday from Oct1-Oct6. Any question during holidays, pls contact Tel: +86 13771185563 (Whatsapp). Wuxi Better Technology Company 09 29 2019

    2019 09/29

  • Mid-Autumn Festival
    2017 Mid-Autumn Festival is fallen on Oct4th. To celebrate chinese tradition festival, Wuxi Better Technology Company will be on holiday from Oct 1st to 8th for National Day and Mid-Autumn Festival.

    2017 10/05

  • Fins for Successful Cooling
    Fins for Cooling Success Figure 1: Clockwise from top right corner are louvered, lanced offset, wavy, and straight fins. As high-power electronics continue to push power density limits, component design engineers are facing greater challenges and trade-offs in their choice for cooling solutions. One way to meet these challenges and trade-offs is through the engineering of fin geometry and fin density of heat transfer devices such as heat exchangers and cold plates. This article will explain how fin geometry and fin density affect the performance of heat exchangers and cold plates. It will briefly review some basic heat transfer theory, compare different types of fin geometries and their role in improving performance, and focus on minimizing thermal resistance as a way to maximize performance. Heat transfer The basic equation that describes the total heat transfer in a process is given by: Q = U × A x LMTD (1) Where: Q = Amount of heat transferred, BTU/hr (W) U = Overall heat transfer coefficient, BTU/hr-ft2-ºF (W/m2-ºC) A = Heat transfer area, ft2 (m2) LMTD = Log Mean Temperature Difference between the two incoming fluids in a heat exchanger or between the local surface and the fluid flowing underneath in the case of cold plates, assuming an evenly distributed heat load, ºF (ºC) Increasing U, A, or LMTD will result in more heat transfer. For most heat exchanger and cold plate applications, the overall heat transfer coefficient consists mainly of a combination of conduction and convection terms, where the conduction term tends to be much smaller than the convection term(s). This is important because component designers usually have little control over the materials of construction, which affects conduction, and the coolant to be used. They do, however, wield considerable control over fin geometry and fin density, which affects convection. Fin geometry and density Fins improve heat transfer in two ways. One way is by creating turbulent flow through fin geometry, which reduces the thermal resistance (the inverse of the heat transfer coefficient) through the nearly stagnant film that forms when a fluid flows parallel to a solid surface. A second way is by increasing the fin density, which increases the heat transfer area that comes in contact with the fluid. Fin geometries and densities that create turbulent flow and improve performance also increase pressure drop, which is a critical requirement in most high performance applications. The optimum fin geometry and fin density combination is then a compromise of performance, pressure drop, weight, and size. A figure-of-merit comparison based on performance, pressure drop, weight, and size among common fin types is described in [Air Cooled Compact Heat Exchanger Design for Electronics Cooling." Aside from fin geometry, parameters such as thickness, height, pitch, and spacing can also be altered to improve performance. Typically, fin thicknesses vary from 0.004 in (0.1 mm) to 0.012 in (0.3 mm), heights vary from 0.035 in (0.89 mm) to 0.6 in (15.24 mm), and densities vary from 8 to 30 FPI (Fins Per Inch). In most high performance applications, fins are made of copper or aluminum. Aluminum fins are preferred in aircraft electronic liquid cooling applications due to their lighter weight. Copper fins are mostly used in applications where weight is not an important factor but compatibility with other cooling loop materials is. There are many different fin geometries used in heat transfer applications. Some of the most commonly used are louvered, lanced offset, straight, and wavy fins. (See Figure 1.) Maximizing performance by minimizing thermal resistance The task of optimizing performance and minimizing thermal resistance can be best demonstrated by a theoretical example. Consider a heat transfer process where 50/50 ethylene glycol and water (EGW) is cooled by ambient air in a plate-fin heat exchanger. Figure 2 illustrates the heat flow path through the heat exchanger using an electrical analogy. Figure 2: Electrical analogy of heat flow diagram In this example, heat flows by convection between temperatures TH and T1, then by conduction between temperatures T1 and T2, and finally by convection between T2 and TC. The total thermal resistance is then equal to the sum of the three thermal resistances in series. By comparison, a cold plate typically has only one coolant flowing through it. As a result, heat flows by conduction from the heat-dissipating electronic device mounted on the cold plate through the thermal interface material and cold plate materials. Heat then flows by convection from the internal surface of the fluid path material to the coolant. As shown in the example above, if we want to maximize heat transfer we must minimize thermal resistance. To accomplish this, we must increase the corresponding heat transfer areas, the film coefficients, or both. Increasing the heat transfer area is relatively easy in concept, though sometimes constrained by application requirements such as weight, size, and pressure drop. An effective way to increase the heat transfer area is to increase the fin density (fins per unit length). Increasing the film coefficient is more complicated, however, because the film coefficient is dependent upon the properties of the fluid being considered, the fluid velocity, and the fin geometry. Meeting the challenge When faced with demanding and sometimes conflicting application requirements, including performance, pressure drop, weight, and size, working with an experienced supplier that understands how to optimize the fin geometry and fin density of heat exchangers and cold plates is essential in order to maximize performance and meet the application requirements.

    2016 11/02

  • Why does aluminum used as fins materials?
    The primary function of fins is to dissipate the heat generated from the engine, basically it is a cooling technique for the engine. When it comes to material selection the preferable one would be the material which can absorb heat form engine at a higher rate and also dissipate it to the air passing through it really fast. Aluminium is an ideal material which possesses this quality.

    2016 11/02

  • Radiator: Aluminum Fins Compared To Copper Fins
    There are some differences between a radiator with copper (Cu) fins compared to a rad with aluminium (Al) fins. 1. The price: copper is much more expensive. 2. The weight/density: Cu = 8,92 g/cm3; Al = 2,7 g/cm3 ; Copper is more than three times heavier than Aluminium. 3. The optics: copper red against a silverish look; also copper tends to tarnish over time, AL has a natural oxide coating of aluminium oxide [Al2O3] which is pretty much inert. 4. Thermal conductivity: Cu = 400 W/(m · K); Al = 235 W/(m · K); Copper has the ability to almost conduct twice as much heat over time than Aluminium. Conclusion: If you are rich, like the copper looks to death, are a strength athlete or own a crane to move your rig (with mutiple Cu fin rads installed) and/or need as much thermal conductivity as possible - for instance you don't have much space in your rig and can only install one radiator - than a copper fin radiator is your thing. On the other hand: Al rads are favorable in price (~50€ cheaper per rad) the lesser weight is also a in favour for Aluminium in relation to Copper if you have multiple big rads installed. The thermal conductivity is neglectable in my opinion if you use multiple big radiators like you intend to do, because if you have fans installed and they run at low speed, the cooling capability is already overkill with those aluminium fin radiators. Nothing in a rig produces so much heat that it needs such intense cooling. You see, even pure air cooling is already enough to keep the CPU and GPU(s) in stable conditions.

    2016 11/02

  • Mid-Autumn Festival
    2016 Mid-Autumn Festival is coming which falls on September 15th. To celebrate chinese tradition festival, Wuxi Better Technology Company will be on holiday from September 15th to 17th that is aslo Chinese National Holidays. Falling on the 15th day of the 8th month according to the Chinese lunar calendar, the Mid-Autumn Festival is the second grandest festival after the Spring Festival in China. It takes its name from the fact that it is always celebrated in the middle of the autumn season. The day is also known as the Moon Festival, as at that time of the year the moon is at its roundest and brightest. People in mainland China enjoy one day off on the festival which is usually connected with the weekend. In Hong Kong and Macau, people also enjoy one day off. However, it is not scheduled on the festival day, but the following day and it is usually not connected with the weekend. In Taiwan, the one day holiday falls on the festival day. Customs On the festival day, family members gather to offer sacrifice to the moon, appreciate the bright full moon, eat moon cakes, and express strong yearnings toward family members and friends who live afar. In addition, there are some other customs like playing lanterns, and dragon and lion dances in some regions. The unique customs of ethnic minorities are interesting as well, such as [chasing the moon" of Mongolians, and [steal vegetables or fruits" of the Dong people. Moon Cake The Moon Cake is the special food of Mid-Autumn Festival. On that day, people sacrifice moon cakes to the moon as an offering and eat them for celebration. Moon cakes come in various flavors according to the region. The moon cakes are round, symbolizing the reunion of a family, so it is easy to understand how the eating of moon cakes under the round moon can evoke longing for distant relatives and friends. Nowadays, people present moon cakes to relatives and friends to demonstrate that they wish them a long and happy life.

    2016 09/12

  • Diesel heavy-duty natural gas engines on the budding
    Those in the past few people are concerned about natural gas heavy-duty engines, is now fired too hot. 2008 Second China (Taiyuan) International Coal & Energy New Industry Expo, the new diesel engine SC9DT attracted a large number of visitors, and in April 2009 Shanghai International Motor Show, on display at the upcoming Diesel 11 liters platform for natural gas engines also won widespread acclaim. "The expansion of natural gas vehicle market demand for the wood to win new opportunities." Industry to make such judgments. As a professional manufacturer of engine companies, from start gas engine project in 1998 has been ten years, on the wood has undergone several generations of product upgrades, achieving all electronically controlled, all of Turbocharged, first by natural gas engine emission levels meet Euroauthentication, and 6C engine based on the development of six-cylinder and four-cylinder gas engine series. So far, the diesel gas engine power coverage to 280 hp from 160 hp, 300 hp, and in urban public transport, heavy-duty commercial truck market has been widely used. Chai has been occupied on the domestic truck, bus 90% of natural gas power market share, and a large number of export to Southeast Asia, South Asia and European markets. Now, Shangchaigufen from the construction machinery market before turning to car-based market and the construction machinery market developments.

    2016 06/16

  • Signs of internal combustion engine market rebound
    Investment adviser in the automotive industry one analyst pointed out that from 2009 the first two months of data, engine manufacturers in China are gradually out of the woods, clear signs of market recovery engine. Investment Advisor in the data analysis showed that the major engine companies in China in early 2009 monthly production order or a very eye-catching: FAW Wuxi Diesel in January monthly production increased from 5,000 to more than one million or more, at over 200%; Weichai 2 month of the engine market orders more than 30,000 units or more, and in March it is up to 4 million units, reaching the highest level in history; Yuchai in February to win the engine of orders close to 6 million units in March also made orders will return to the same period of 2008 levels; China Heavy Truck Hangzhou fat production and sales are expected in March to a record high. Major companies from the February sales of the engine practical point of view, Laidong Shandong, Anhui, all wood, Jiangxi Jiangling, Kunming Yunnan, the Yang Cai and so few for light trucks and agricultural vehicles supporting the enterprises have been more substantial growth. Can be seen, the market is really on a warming condition but the extent of warming is different. Engine performance of downstream sectors automotive market is strong proof Lisheng Mao's point of view. Investment Advisor in the Research Center of Industry data shows that in February auto production and sales both more than 800,000, and sales over the previous year, the chain have seen substantial growth. February, 807,900 vehicle production, growth of 22.96 percent, an increase of 23.08%; sales of 827,600, growth of 12.43 percent, up by 24.72%. Among them, the commercial sales market quickly pick up, production and marketing chain growth up to 60%. February production of 216,600 commercial vehicles, growth of 63. 88 percent, up by 17.17%; sales 220 300, growth of 75.54 percent, up by 26.09%. 1.6 and below passenger car sales market continued to maintain strong growth. Production of 591,300 passenger cars in February, growth of 12.66%, up 25.40 percent; selling 607,300, lower than the previous 0.54%, up 24.23 percent. Displacement of 1.6 liters and below, sold 434,300 passenger cars, growth of 2.16%, up 43.81 percent. Investment Advisor in the auto industry analysts think that the national policy of stimulating domestic demand to stimulate the economy did play a role, but this effect in the micro, the performance of light vehicles is much more prominent, especially in March, and along with the central authorities on sustained attention to the rural economy and the market for "car to the countryside" policy is expected, the overall sales of light trucks will have improved significantly, so the engine light vehicle market outlook is very positive.

    2016 06/16

  • Chinese Dragon Boat Festival is on 06/9/2016
    Chinese New Year, the Mid-Fall Moon Festival and the Dragon Boat Day are three major festivals in China. The Dragon Boat Festival is celebrated on the 5th day of the 5th lunar month of the Chinese calendar. Chinese call this day as Duan-Wu. Duan means beginning. Wu means Horse month in Chinese calendar. The Horse month usually begins on June 5th or June 6th in the Gregorian calendar. That means Dragon Boat Festival should be held in June, unless that year has Leap Month in the Chinese lunar calendar. The Date of Chinese Dragon Boat Festival The 5th day of the 5th lunar month Year China Time Zone USA Pacific Time Zone USA Eastern Time Zone 2015 6/20/2015 6/20/2015 6/20/2015 2016 6/9/2016 6/8/2016 6/8/2016 2017 5/30/2017 5/29/2017 5/29/2017 2018 6/18/2018 6/17/2018 6/17/2018 2019 6/7/2019 6/7/2019 6/7/2019 The Sad Story In China, the Dragon Boat Festival memorializes the Chinese patriotic poet Chiu Yuan (340 BC-278 BC or 343-290 B.C.), who committed suicide by jumping into the river after tying himself with big rock on the 5th day of the 5th lunar month. Chiu Yuan was the number one advisor of the kingdom of Chu . But people were jealous his position and said lots of bad words on his back. The king wouldn't take his advice in the end and was killed by the enemy of neighbor kingdom. The new king continued to enjoy the luxury life and didn't like Chiu Yuan either. Later, Chiu Yuan was exiled. He wrote many patriotic poem after then. Chiu Yuan met a fisherman, who never cared about the country and quite satisfied his life. Chiu Yuan thought that the king wouldn't run the country, people only cared about themselves, nobody cared the future of the country and to live is meaningless. So he killed himself by drowning himself in the river. Many fishermen tried to rescue him, but the body is never found. Fishermen worried about fish would eat his body. So they threw food into the river to feed the fish. Plus, they tried to scare fish away by splashing the water with their paddles and beating the drums on the long narrow boats. Then the dragon was added into the story. Fishermen believed there was a water-dragon under the river. One man poured down a big jar of strong yellow wine (made of rice). Later, a drunken dragon-like fish floated on the river. One piece of Chiu Yuan's clothing was found in-between the whisker of the water-dragon. The Dragon Boat The custom of Dragon Boat Race might begin from the southern China. They selected the 5rh lunar day of the 5th lunar month as the totem ceremony. The dragon was the main symbol on the totem, because Chinese thought they were son of dragon. They also made dragon-like canoe. Later, Chinese connected this custom with Duan-Wu festival. Since this was the event only in the southern China. This might be why Dragon Boat Race doesn't that popular in entire China today. But we can see yearly Dragon Boat Race events in Honk Hong and Taiwan. The picture shows a person lies on the top of dragon head of the boat to prepare to catch the flag of target to win the race. Now, the Dragon Boat Race becomes an international event. This sport is popular in USA, Canada, Europe, Australia, Taiwan, Honk Hong, Singapore etc. Some organization's events aren't held around the Dragon Boat Festival. Some are in July, August or September. You need to check their websites for the schedules. · www.sfdragonboat.com · www.dragonboat.net · www.dragonboatdc.com The Delicious Food One saying the fishermen threw bamboo-food into the river for Chiu Yuan. The fishermen kept the custom on on the 5th day of 5th lunar month every year. Until Late Han Dynasty (25-220 AD), one outsider came and acclaimed fisherman's behavior, but recommended to wrap the food with leaves and tie with color silky rope, which can scare fish away. So the Chiu Yuan can unwrap the leaves to eat the food. Obviously, the Zong-zi, which Chinese eat on the the Dragon Boat Day period, is like the food for Chiu Yuan. Zong-zi is make of steamed glutinous sweet rice mixing with meat and condiment wrapped in the bamboo leaves. There are salty, sweet, hot or cold different variety of Zong-Zi today. You can find Zong-Zi in Chinese restaurants providing Dim-Sum lunch or same Chinese diners in Chinese communities in USA. The Standup Egg The Dragon Boat Day is usually in June, which is Horse month. Horse hour in astrology is from 11:00 AM to 13:00 PM. They said that you will be lucky for the coming year if you can make an egg standing up during Horse hour on the Dragon Boat Day. Parents like to let their children to try to make the egg standing up on the Dragon Boat Day. Certainly, the standing up egg competition will be held at noon in many places. They said that it's will be easier to make a standing up egg at noon. Many try to cheat on the ground, eggshell or inside egg to in order to win the competition. People had looked for the scientific explanation. The egg can standup easily is because the Dragon Boat Day is close to the summer solstice, which is the longest day of the year. The summer solstice occurs when the Earth's axis tilts the most toward the sun, causing the sun to be farthest north at noon. Sun reaches to the Tropic of Cancer in the northern hemisphere on the day of summer solstice. Before sun travels back to the southern hemisphere, it seems as if the sun stands still. When the gravitation between sun and earth are pulled each other to the most, an egg can stand up easier. Actually, the Dragon Boat Day is not close to the summer solstice every year. Because the lunar leap months, the Dragon Boat Day usually is close to summer solstice every three years. Year Summer Solstice Dragon Boat Day 2004 6/21/2004 6/22/2004 2005 6/21/2005 6/11/2005 2006 6/21/2006 5/31/2006 (Leap Month) 2007 6/22/2007 6/19/2007 2008 6/21/2008 6/08/2008 2009 6/21/2009 6/27/2009 (Leap Month) 2010 6/21/2010 6/16/2010 The Auspicious Leaves The 5th lunar month is marked as "Poison" month in Chinese Farmer's Calendar. This is because the gem, insect, fly, mosquito, and pest are active in this summer month and people is easy to catch infectious disease. On the Dragon Boat Day, Chinese put the leaves of Acorus and Artemisia on the doors or windows to repel insect, fly, flea and moth away from the house. Those leaves have anti-poison function and can prevent an epidemic. The leaves of Acorus are linear, sword-like, glossy, evergreen and lush. Artemisia belongs to daisy family with fern-like leaves. In Tan Dynasty (618-907 A.D.), Rebel Huang scouted the target village and prepared the next attack in 5th lunar month. He saw a woman carrying a boy in her one arm and holding the another boy's hand was running. Rebel Huang asked her why running. She said, "We heard Bandit Huang is coming, we need to run for our lives." Huang asked again, "Why carrying one in the arm, but holding another with hand?". The woman said, "The one in the arm is the only son of my husband's elder brother. The other one is my son. In case, I cannot run quickly enough, I will drop my son and save my husband brother son." Rebel Huang was very touching, then told her that "Go home quickly and put Acorus and Artemisia on your door, then rebel forces won't hurt your family." She returned to the village and told some people. On the 5th day of 5th lunar month, Rebel Huang's forces entered the village, all the families with Acorus and Artemisia on the door were safe. The custom keeps since then. The Incense Bag Many contagious disease and plague had found in the 5th lunar month in the Chinese history. Besides putting the Acorus and Artemisia on the doors or windows, Chinese make the incense bag and hang on the neck to prevent from contagious disease and keep evil spirit away. The incense bag are made by hand. Chinese put the powder of Acorus and Artemisia with some other fragrance stuff into different kind of sewing bags. Therefore the incense bag can prevent an epidemic as the leaves of Acorus and Artemisia. The popular incense bags was 12 horoscope animals. Today, we can find many different auspicious symbols, many other animals, fish, flower, bird, even the cartoon characters. Long time ago, Chinese women liked to make incense bag for children. The Inauspicious Day The 5th lunar month is a bad month. The 5th day of the month is an inauspicious day, because many famous people died on this day in Chinese history. One customary book recorded, "if a baby's born on this day, baby boy brings bad luck to dad and baby girl brings bad luck to mom." It happened that parent killed the baby born on this day before. One famous tragedy story about the 5th day of 5th lunar month happened in Han Dynasty. A 14-yar old girl Tsao Er's father were drowned in the river. The girl cried along the river and looked for her father for 17 days. On the first day of 5th lunar month, the girl jumped into the river. On the 5th day of 5th lunar month, people found the girl's body and her father's body holding together and floating on the river. People were very touching and prayed for them. The Wine and Water They said that you will become healthier to drink the spring water from the well on the Dragon Boat Day during Horse hour (11.00 AM to 13.00 PM). The story is from late Ming dynasty. A general brought his troop to the hill and couldn't find the water for days. He prayed to the heaven, then struck his sword into the ground and the water spurted out on the 5th day of 5th lunar month at noon. Once Chinese drank Strong Yellow Wine to clean up the gem in the body on the Dragon Boat Day. The Strong Yellow Wine is made of rice. It's a tonic wine and not good for children. Therefore adult just wipe the children forehead with the Strong Yellow Wine. They believe that will make children healthier and won't catch the 5th lunar month disease.

    2016 06/06

  • Automotive Engineer Oil Coolers
    An oil cooler is essentially any device or machine intended to cool oil, but in most instances people talk about it in the context of cars, trucks, and sometimes airplanes. In these settings the cooler basically acts as a small radiator that helps keep an engine cool by keeping the oil supply at a consistent temperature. Cooled oil helps keep the engine running smoothly, particularly during gear changes in very hot weather or on long-haul trips when things might otherwise have a tendency to overheat and break down. Not all cars and trucks use oil as a coolant, but those that do really depend on a working cooler in order to get good efficiency and performance. Main Purpose Automotive engines tend to be somewhat complex, and usually depend on a series of different combustions, heat sources, and temperature regulators in order to function properly. Oil coolers are most common in heavy-duty machinery that has a more industrial-grade engine. Trucks used to haul freight and large vehicles designed for off-roading are two common examples; some recreational vehicles (RVs) and airplanes have them, too, and they may even be found in certain motorcycle models. Race car drivers sometimes add them to sports cars to make them more efficient, too, and to improve their fuel combustion times. A transmission oil cooler is often considered essential in high-strain situations because a transmission's lubricating fluid heats up with each gear change. While not crucial for highway driving when vehicles more or less stay within a few gears, transmission coolers can markedly improve the performance and longevity of transmissions that are subjected to a great deal of stress. Overheated transmission oil can lead to slower gear shifts, worn seals, lower mileage, and, ultimately, premature failure. Even though the main job is to cool and lubricate the engine, this part can also act as an important coolant for a number of other parts. A motor's bottom end, which includes parts such as the crankshaft, bearings, camshaft, rods, and pistons, is also cooled only by engine oil, for instance, and this cooling can impact overall performance just as much as it could in the engine itself. Types Engine oil cooler design can generally be split into two types. Tube and fin models are the first, and are designed so that oil circulates through cooler lines that surround the engine. As the oil moves away from the heat of the central engine, its temperature drops and excess heat is funneled out by fin-like vents attached to the tops or sides. Stacked-plate designs, by contrast, force oil through a series of metal plates. Heat dissipates as air moves across the plates, and the oil cools faster when it has greater surface area and is shallower, too. Plated models are often slightly less effective at cooling oil than their tube and fin counterparts since they`re more passive, basically waiting for cooling to happen on its own. A lot of this depends on the application, though. In some settings, stacked plate coolers make more sense. How They Work In a stock setup, transmission fluid is cooled as its collected heat transfers to the colder engine coolant that surrounds it. Coolers usually work best when mounted in front of a stock radiator since this is where it can often get the most unobstructed source of cool air. This, in turn, allows much cooler fluid to return back to the transmission case. While a majority of cars are not manufactured with proprietary engine oil coolers, there is a large aftermarket for them in many places, and they are common accessories in vehicles involved in towing and other heavy-duty applications. People can buy oil cooling kits to upgrade their vehicles themselves, though this usually requires a bit of expertise. Many professional shops will also install these for people looking for ways to make their machines more efficient. Common Problems The optimum temperature for oil is usually between 180° and 200°F (82° and 93°C). Failures start to occur when oil cannot dissipate its collected heat fast enough and rises past this threshold, which can begin to degrade the oil. Oil loses its lubricating, as well as its cooling, properties when it starts to break down, and this can lead to a number of serious engine and transmission problems. Coolers should usually be inspected fairly regularly to keep them in good working order, and owners should take care to regularly inspect and service them to avoid major failures. Better Technology company can supply different model stacked plate oil coolers to meet your application requirement.

    2016 01/24

  • Better Technology Company Successfully Produced Special Corrugated Fin Forming Molds for Harvester
    To better protect our environment, the government is pushing some compulsory policy regarding stricter pollution criterion so that more and more mobile equipments have to to be changed their heat exchangers from tube-fin type to plate-bar ones and manage to improve the efficiency of heat transfer. With a plan of 10000 PCS/Year aluminum plate&bar heat exchangers on agriculture machines dropped into production base of heat exchanger at Mashan, Wuxi, Better Technology company has successfully developed the fin forming molds of special corrugated fins for harvester whose pitch is bigger at 12mm with double waves. The fins from such mould not only greatly improve heat performance but also effectively avoid jam under severe work environment. Outstanding aluminum plate-bar heat exchangers are applied to agriculture machines that can effectively cool down the work medium , improve the fuel usage rate and prolong engineer life. Meanwhile, the fuel is fully used which reduces the exhaust emission and environment pollution.

    2016 01/22

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