Condensing heat recovery fresh air system vertical fresh air dryer, the exhaust cooling, recycling of heat, especially in winter, significantly improved heating performance, achieve environmental protection, and efficient energy-saving effect. For home, school fresh air machines, hotels, food industry, large commercial establishments, public places. Winter indoor discharged about 20 ℃ hot air through evaporation side back to outdoors, and outdoor cold fresh air through the condensation side heated to about 22 ℃, into the room. Summer indoor discharged cryogenic cold air is discharged to the outside through the condensation side, and the fresh outdoor air temperature dropped to around 18 ℃ by evaporation to the indoor side. During the transition season, no need to enable horizontal fresh air compressor systems unit, only open the ventilation system, which is to ensure the introduction of fresh air, but also saves energy. Nanjing Environmental Engineering Equipment Co., Ltd. Keao production, consulting, design and installation of one of the specialized multi-industry company, is the early development of integrated operational environmental protection products, and other business areas of the company. The company has many years of indoor central air system and central vacuum cleaning system solution to quality, design, construction and management experience. New air control unit comprising: a supply air temperature control, air relative humidity, frost control, CO2 concentration control, and various interlock content. If the new commitment to consider indoor air unit loads (eg DC-type units), but also to control the room temperature (or indoor relative humidity). Fresh air unit and the air conditioning unit difference: new air unit is used to handle fresh air fresh air installation, most of the new air unit is the fan coil unit and together use; Under normal circumstances, the air conditioner itself has a new outlet, fresh air to ensure indoor air quality, and added indoor ventilation. Since no new fan coil outlet, it is necessary to provide a new fan. New air handling units provided through the new air handling and fan coil processed through the return air, or is first mixed and then treated by the fan coil, and then into the room. The new air unit, new air unit price, Keao environment (certified merchants) are provided by the Nanjing Environmental Engineering Equipment Co., Ltd. Keao. Keao Nanjing Environmental Engineering Equipment Co., Ltd. (www.njxfxt.com) to provide "new central air system, central vacuum system, air accessories, cleaning accessories' business, the company has" Keao "brand. Focus on other industries, in Nanjing have higher visibility. Welcomes inquiries, contact: Li.