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论文类型：期刊论文

发表时间：2010-06-01

发表刊物：ENERGY AND BUILDINGS

收录刊物：SCIE、EI、Scopus

卷号：42

期号：6

页面范围：889-895

ISSN号：0378-7788

关键字：District heating system; Seawater source heat pump; Boiler house; Energy-saving

摘要：As a renewable energy utilization system, the electric-driven seawater source heat pump district heating system is gaining popularity in some coastal areas. However, under what conditions can the system achieve its energy-saving effect and how to evaluate its energy-saving potential are not clear in practice. In this paper, an expression of the critical COP value of the heat pump unit for energy-saving (COPh,c) is derived through the comparison of the system and the conventional boiler house district heating system in the energy consumption respect. On the other hand, the actual COP values of the heat pump unit (COPh,a) are calculated by an experimental data regression model on the basis of the manufacturer's dataset. The comparison of the values of COPh,c and COPh,a makes the energy-saving judgment of an electric-driven seawater source heat pump district heating system and its energy-saving potential, if it has, readily available. It was found that both the heating district radius and the natural conditions of the seawater are the most important factors that determine the energy efficiency of the system. And through comparison, it was also found that the type of the fuel of the boiler has significant impact on the crucial index value of COPh,c. (C) 2010 Elsevier B.V. All rights reserved.