Since the 1920 s, along with the constant promotion of air-conditioning equipment in our country, the technology unceasing enhancement, hvac industry in China has made considerable development. Currently, hvac technology has already begun to put into application in the field of public buildings and so on, and effective impetus to the development of the domestic hvac industry.

As is known to all, the development of hvac industry is bound to be somewhat to energy consumption, especially air conditioning equipment mostly belongs to one of the larger electric consumption, in this to energy conservation as the theme of the era, the further development of hvac equipment also cannot leave the link of energy-saving technology transformation of ascension. Is the key to the hvac industry of energy conservation and environmental protection equipment research and development, is, of course, as far as possible in the design and manufacture of green environmental protection equipment has reached the purpose of energy s