Operation strategy analysis of a geothermal step utilization heating system

被引：27
作者：
Zheng, Guozhong [1 ]
Li, Feng [1 ]
Tian, Zhe [1 ]
Zhu, Neng [1 ]
Li, Qianru [1 ]
Zhu, Han [2 ]
机构：
[1] Tianjin Univ, Sch Environm Sci & Engn, Tianjin 300072, Peoples R China
[2] Chongqing Univ, Fac Urban Construct & Environm Engn, Chongqing 400030, Peoples R China
来源：
ENERGY | 2012年 / 44卷 / 01期
关键词：
Geothermal energy; Step utilization; Operation strategy; Heat pump; EXERGY ANALYSIS; ENERGY; PUMP; PERFORMANCE; DESIGN; ELECTRICITY; ENVIRONMENT; PARAMETERS; IMPACTS; AFYON;
D O I：
10.1016/j.energy.2012.06.006
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
Geothermal energy has been successfully applied in many district heating systems. In order to promote better use of geothermal energy, it is important to analyze the operation strategy of geothermal heating system. This study proposes a comprehensive and systematic operation strategy for a geothermal step utilization heating system (GSUHS). Calculation models of radiator heating system (RHS), radiant floor heating system (RFHS), heat pump (HP), gas boiler (GB), plate heat exchanger (PHE) and pump are first established. Then the operation strategy of the GSUHS is analyzed with the aim to substantially reduce the conventional energy consumption of the whole system. Finally, the energy efficiency and geothermal tail water temperature are analyzed. With the operation strategy in this study, the geothermal energy provides the main heating amount for the system. The heating seasonal performance factor is 15.93. Compared with coal-fired heating, 75.1% of the standard coal equivalent can be saved. The results provide scientific guidance for the application of an operation strategy for a geothermal step utilization heating system. (C) 2012 Elsevier Ltd. All rights reserved.
引用
收藏
页码：458 / 468
页数：11
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