Research on improving unit thermal efficiency based on absorption heat pump by reducing the circulating water temperature

Author

Yongbing, He ; Shijing, Wu ; Jixuan, Wang

Author_Institution

Sch. of Power & Mech. Eng., Wuhan Univ., Wuhan, China

fYear

2011

fDate

16-18 Dec. 2011

Firstpage

2119

Lastpage

2122

Abstract

The system of regenerator cycle based on absorption heat pump, through heating up the feed water by the heat from the circulating cooling water by the absorption of the steam driving absorption heat pump, can reduce the temperature of the circulating water and exhaust steam pressure, thus to improve the thermal efficiency of the unit eventually. In this paper, based on the 30MW absorption heat pump which is successfully used in the market, calculation model is presented. What´s more, by studying on supercritical 600MW units, the influence on the unit efficiency based on absorption heat pump by reducing the temperature of circulating cooling water with waste heat utilization is analyzed.

Keywords

absorption; condensers (steam plant); exhaust systems; heat pumps; steam power stations; waste heat; circulating water temperature reduction; condenser; cooling water circulation; exhaust steam pressure; feed water heating up; power 30 MW; power 600 MW; regenerator cycle system; steam driving absorption heat pump; supercritical unit; unit thermal efficiency improvement; waste heat utilization analysis; Absorption; Cooling; Heat pumps; Turbines; Waste heat; Water heating; Water resources; absorption heat pump; temperature of circulating cooling water; unit efficiency; waste heat;

fLanguage

English

Publisher

ieee

Conference_Titel

Transportation, Mechanical, and Electrical Engineering (TMEE), 2011 International Conference on

Conference_Location

Changchun

Print_ISBN

978-1-4577-1700-0

Type

conf

DOI

10.1109/TMEE.2011.6199636

Filename

6199636