【正文】 ve the heat transfer between the two fluid, we must increase heat transfer coefficient, increasing heat transfer area, in order to Heat to make up too large, is the only increase heat transfer coefficient K. ① shallow plate of corrugated Beijing, Beijing is the heat transfer equipment manufacturers limited liability pany developed a new type of plate, the heat transfer coefficient of about 7000 W / ㎡ ? K, is the level of the flat corrugated board two times, is chevron Corrugated sheets of times, in the regional cooling, the detection of △ tm is about . As in ice storage of ethylene glycol and chilled water use in the heat exchanger, △ tm is about . ② plate evaporator, condenser plate Beijing, Beijing is also the heat transfer equipment manufacturers limited liability panies adapt to the development of a new type of heat pump units in the heat exchanger. And the shellandevaporator, pared to the condenser, which has the following advantages: unit volume in the evaporator plate, the plate condenser is a heat transfer area of shell and tube heat exchanger of three times the plate evaporator heat transfer coefficient About 1000 ~ 1200 W / ㎡ ? K, the condenser plate heat transfer coefficient of about 1500 ~ 2020 W / ㎡ ? K are shell heat exchanger two to three times the plate on the evaporator used to Refrigerant distributor of liquid evenly distributed devices, when the evaporator plate a few more, may be uneven distribution of liquid refrigerant and can not take full advantage of all the heat and evaporation area, evaporation temperature lower than the calculated design temperature. After a distributor overe these problems. Detection of data on the relevant units, evaporator plate, the plate condenser in the heat transfer coefficient △ tm about ~ 3 ℃ , in 1500 ~ 2020 W / ㎡ ? K between the resistance and small, satisfying the heat pump units Requirements. ⑵ small NTU (∽ ~ 2), the △ tm (∽ 40 ~ 90 ℃ ) of the plate heat exchanger to meet the heat recovery process and the process heating and cooling requirements. When the process in the △ tm conducted under conditions of heat transfer, that driving force, the heat and the smaller, the heat transfer coefficient demand is not high, but that this process or highpressure work, or work High temperature, or process heating and cooling process in the liquid containing fiber diameter or larger particles, the plate heat exchanger, the pressure, temperature and ability to request, the heat exchanger to the plate spacing requirements. ① Pai (breathing) gas water shell heat exchanger (Province can), Pai (breathing) gas shellair heat exchangers (air preheater) is a heat exchanger in Beijing Beijingequipment manufacturers limited liability Portland petrochemical panies and codeveloped a new type of plate heat exchanger, all welded plate heat exchanger in the heat transfer through the medium to achieve the control board, posed of board control by the plate for forming mold suppression, allwelded Beam installed in the pressure shell. Corrugated plate with static mixing, in a very low Reynolds number formed under the turbulence, and low coefficient of di