Air curtain principle of selection: a hot air curtain air curtain design parameters of the supply air temperature. Generally determined by calculation. For the production of a wide public buildings and houses outside the door, the air curtain air temperature is less than 50 ℃; for the tall outer door-proof air curtain, air temperature is less than 70 ℃. Outlet air curtain wind. Generally determined by calculation. For residential and commercial buildings, and its outlet velocity can be 4 ~ 9m / s; for industrial buildings, outlet velocity can be 8 ~ 24m / s, not more than 2Sm / s. 2. Non-heated air curtain (isothermal air curtain) Scope ① civil air-conditioning system and door entrance foyer in the trunk. ② require higher operating counter commercial buildings. ③ some sporadic Park fog, different ignorant, odor room door. ④ distribute gas and dust in the opening process equipment. 3. When the hot air curtain scope ① heating outdoor design temperature is equal to or lower than the region -20 ℃, when the shop door opened frequently the main channel electrically heated air curtain, door bucket or front room is not set, and the class time more than 40min . ② regardless of the level of heating outdoor design temperature and duration of hot air curtain door open, when production requirements are not allowed to reduce the indoor temperature, but can not be set before the door bucket or room. ③ heating outdoor design temperature is higher than the 200e area, when reasonable technical and economic indicators. ④ large number of scattered wet room or near the outer door, there is a fixed job for civil and industrial construction entrance foyer and doors in the trunk. RMQ-L / W steam centrifugal hot air curtain: This type of hot air curtain is a fan with low noise centrifugal double suction fan, air pressure, good sealing door effect; air heaters with high-purity copper and seamless sine aluminum heat sink, corrosion resistant, high pressure, heat stability, heat transfer coefficient, small size, light weight, long life and other advantages. Foyer air curtain, air curtain, air conditioning provided by the Texas Watson Watson air-conditioning plant. Texas Watson air-conditioning plant (www.wchuaxin.com) (www.wchuaxin.com) strong, credible, Shandong Texas heat, refrigeration and air conditioning equipment industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead Watson air conditioning and you hand into the brilliant, for a better future! You can also access (www.wchuaxin.com/supply_details_47198035.html), for more information about the company.