Pressure refrigerant gas into a high temperature and pressure for the rear air conditioning in the cooling operation, low-temperature low-pressure refrigerant gas is sucked into the compressor, Shenyang air conditioning units, high-temperature high-pressure refrigerant gas heat in the outdoor heat exchanger (by condensing condensed) into temperature and high pressure liquid (circulating air through the outdoor heat away), air conditioning units installed in temperature and high pressure liquid again after throttling down to a low temperature part throttle pressure liquid, low-temperature low-pressure liquid refrigerant In the indoor heat exchanger in the gas after high temperature heat into a low-pressure evaporator (indoor air is cooled via a heat exchanger to cool the surface, to achieve the purpose of the room temperature drops), air conditioning units application, low-temperature low-pressure refrigerant gas is again compressor suction, and so on. Modular air conditioning units principle: modular air-conditioning unit itself, without cold, heat, air conditioning unit principle, based on cold, hot water or steam as a medium to complete the filtration of air, heating, cooling, humidification, noise, heat recycling, new air handling unit modular housing and new and return air mixing functions. For example, the process for assembling secondary air system air conditioning units: fresh air filtered through a filter dust and debris into the water heated by a heat treatment chamber, after the cooling and dehumidification then mixed with secondary air conditioning units maintenance, Chenyu air conditioning (online consultation), Shenyang air conditioning units are provided by Wu Cheng Chen-yu air-conditioning Limited. Wu Cheng Chen-yu air-conditioning Co. (www.wccykt.com) is an industry leader in Shandong Dezhou, fans, ventilation equipment, over the years, the company implement the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs . Chen Yu-conditioned in leadership with the staff warmly welcome all inquiries negotiations to create Chenyu air conditioning better future.