Abstract: This paper introduces a kind of nearly ten years in foreign countries the rise of a new type of air conditioning system. This paper introduces the water loop heat pump VRV products in the overseas development and application of related incentive policies as well as in the domestic promotion prospects. According to the2005 Beijing city" public building energy efficiency design standards" for equipment integrated part load coefficient of performance requirements, carries on the energy conservation of.

    1．Application of water loop heat pump VRV

    Water loop heat pump VRV ( water-cooledVRV ) VRV series is a branch of it in the air, on the basis of VRV, air-cooled type ( fan + table cooler ) into water-cooled ( cooling water loop + built-in plate exchange ), forming a pipe into the room, but only in shaft and host a special machine room; the host is located in the interior of special equipment, size and weight is smaller, can be placed in stacked; in the use of combining centralization and decentralization of a new type of air-conditioning.

    It can be associated with multiple energy combining forms, used in various ready-made cold and heat sources, or in the presence of both inside and outside the region, or at the same time there is hot and cold needs new, alteration or addition project. Construction scale from a few hundred meters to hundreds of thousands of square meters ranging.

    Host using R410A refrigerant, a heat pump and heat recovery type two. The heat recovery this concept, already on the VRV application in air. Using this model, can be implemented in a refrigerant system simultaneous cooling and heating.

    1．1．In the overseas development survey

    Go up century 80 time end at the beginning of 90 time, Japanese economy is in a period of rapid development. From the economic scale, at the beginning of 90 time Japan's GDP per capita was $29524, ranking first in the world, more than the United States of America20%. The rapid development of various social construction. Also from this period begin, the Japanese government began to" implement the strategy of sustainable development"," the development of recycling economy, build loop society as to achieve sustainable development strategy is the important way and means".

    Water loop heat pump VRV is based on such background, response was the emergence of a large number of transformation / new project for recycling, sustainable development needs of the.

    After ten years of development, the water loop heat pump VRV in Japan and Europe and other developed countries have made rapid development, has now developed to the second generation products. By the end of 2005, the products have obtained05 year Japan Energy Conservation Award -- energy saving president Award ( Note 1) and European government tax incentives policies to encourage application