The new wind ventilators selection of reference to select a different installation and according to the structural characteristics of the building of new wind ventilators according to room usage, size, number of internal staff to determine the appropriate amount of wind fresh air ventilator selection of reference: 1, ventilation calculation methods: Q = n × v where: Q: ventilation m3 / hn: ventilation frequency 1 / hv: volume required ventilation room 2, room ventilation frequency of various types of reference: First, a residential building, housing, quarters bedroom and living room --- ACH n = 1 / h 2, kitchen --- n = 3 / h 3, toilet and wash room --- 1-3 / h Second, medical building 1, ward --- 1 / h 2, office --- 1.5 times / h 3, X-ray room --- 3-5 times / h 4, physical therapy room --- 50m3 / person × h 5, 5 treatment rooms --- / h 6, operating room --- 5-6 / h 7, Chinese and Western medicine room --- 2-3 times / h 8, steam sterilization chamber --- 4 times / h while using the total heat exchanger, fresh air ventilators, ventilation cost savings per year with a total heat exchanger AHE-200WB example: according to the national standard conditions, the ambient dry bulb temperature 27 ℃, wet bulb temperature of 19 ℃, the outdoor dry bulb temperature of 35 ℃, wet bulb temperature 24 ℃, the enthalpy difference between the two conditions is 18.089KJ / m3; 2000 m3 / h of fresh air into the room from the outside, the first hour hot source units to be brought into the interior of the heat of 18.089KJ / m3 * 2000 m3 / h = 36178KJ / h = 10049W; the use of a configuration of the total heat exchanger, the heat exchange efficiency of 75%, can be less brought 2512.4W * 75% = heat 13398W; the heat source unit according to EER COP = 3.0 to calculate the sensible heat type new wind ventilators, equivalent to saving energy 13398W / 3 = 4466W That, ceiling-mounted fresh air ventilators, according to 24 hours each day can save 107KW power consumption, monthly energy savings 3210KW consumption, energy saving effect is very obvious landing new wind ventilators, air conditioning Dingrui (certified), new wind ventilators Ltd. wucheng Dingrui provided by air-conditioning equipment. Wucheng Dingrui Air Conditioning Equipment Co., Ltd. (www.wcdrkt.com) (www.wcdrkt.com) is an industry leader in Shandong Dezhou, fans, ventilation equipment, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness , the maximum meet customer needs. In Dingrui air conditioning leadership with the staff warmly welcome all inquiries negotiations to create Dingrui air conditioning better future.