At the same time, the use of the total heat exchanger, the annual cost savings ventilation AHE-200WB with a total heat exchanger as an example: according to the national standard conditions, the ambient dry bulb temperature 27 ℃, wet bulb temperature of 19 ℃, outdoor dry bulb temperature 35 ℃, wet bulb temperature of 24 ℃, factory direct new wind ventilators, the enthalpy difference between the two conditions is 18.089KJ / m3; 2000 m3 / h of fresh air into the room from the outside, the cold heat source of Unit hour into the interior of the heat required for the 18.089KJ / m3 * 2000 m3 / h = 36178KJ / h = 10049W; the use of a configuration of a total heat exchanger, tank new wind ventilators, heat exchange efficiency of 75%, can be brought into less 2512.4W * 75% = heat 13398W; and by the cold heat source unit COP = 3.0 EER calculation, equivalent to saving energy 13398W / 3 = 4466W is to say, 24 hours a day by computing can save 107KW power consumption, can be a month save 3210KW power consumption, energy saving effect is very obvious product of this project in the heat of the exhaust air conditioning by means of heat transfer to the new wind reproduced, fresh air preheated or pre-cooled to near room temperature into the room, fresh air ventilator, so reduce air conditioning energy consumption, and improve indoor air quality products of the project is both energy-saving and environmentally friendly building products, which on the one hand recycling 75% of the energy air-conditioned environment, all hot new wind ventilators, on the other hand to the community and users of the economy, the health of new wind, effectively eliminating air conditioning disease, for building energy-saving and energy-efficient air conditioning of great significance, in line with the national industrial policy to support the development of restructuring and emerging industries. Central air-conditioning new wind ventilators _ Dingrui air conditioning (certified) _ new wind ventilators Ltd provided by wucheng Dingrui 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.