Presents the system principle and characteristic of the steam-water plate heat exchanger unit,discusses the economized energy unit about designing water temperature and water consumption,analyses the economized energy result by design example,and expounds the system apply scope and the valuation method of economized energy in the building hot water supply.

The solar energy was stored in the soil in summer,and was taken out by the ground-source heat bump for building heating in winter.

Operations reference-model of green construction supply chain;

Purchasing Management Research of Engineering Project in Construction Supply Chain Environment;

Risk management of construction supply chain under EPC Mode

This paper analyzes the energy saving, economy and progress of some building hot water technology, such as solar energy hot water technology, heat pump hot water technology and waste heat utilization technology.

Analysis on the condition of hot water supply in district heating system;

Experimental research on the dynamic characteristics of the energy-saving type air conditioner with domestic hot water supply;

Legionella pneumophila which is caused by the air conditioning and hot water supply system can not be ignored for threatening health.