Considers that in the future residential air conditioning in large cities should be directed toward district heating/cooling and cogeneration of heating/cooling and power while in middle and small cities or suburb areas,the so called household air conditioning should be promoted and for apartments for singles or shared occupancy,the room air conditioners are desirable, and that these ways a.

The Life Cycle Cost Evaluation of Schemes and Analysis of Key Parameters in District Cooling and Heating System;

Take a residential areas district cooling and heating system as example.

In this paper,the concept of life cycle cost and the method of life cycle cost analysis were briefly introduced,and then,several cooling and heating source schemes for district cooling and heating system in Dalian Xinghai bay were estimated.

Feasibility of Realizing DHC Using Heat Pump in WWTP;

Feasibility Analysis and Comparison of Heating and Cooling Source Schemes for DHC Systems;

Analysis of load prediction of district heating and cooling in Japan

Describes the heating and air conditioning equipments and district heating and cooling facilities of the main buildings.

The evolution of district heating and cooling in USA and Japan is described Some lessons in the development are summarized,which compares with our idiographic conditions,The advice to promote the development of our country s district heating and cooling are put forward.