Post-evaluation of a ground source heat pump system for residential space heating in Shanghai China

2017 International Conference on New Energy and Future Energy System

Lei, Y.^1,2 ; Tan, H.W.^1,2,3 ; Wang, L.Z.^4

School of Mechanical and Energy Engineering, Tongji University, Shanghai

201804, China^1

Research Center of Green Building and New Energy, Tongji University, Shanghai

200092, China^2

UNEP, Tongji Institute of Environment for Sustainable Development, 200092, China^3

Shanghai Research Institute of Building Sciences, Shanghai

201108, China^4

关键词: Critical factors;    Design and operations;    Energy-saving benefits;    Groundsource heat pump (GSHP);    Heat consumption;    Payback periods;    Post evaluations;    Seasonal energy efficiency ratios;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/93/1/012053/pdf
DOI  :  10.1088/1755-1315/93/1/012053

来源: IOP

【 摘 要 】

Residents of Southern China are increasingly concerned about the space heating in winter. The chief aim of the present work is to find a cost-effective way for residential space heating in Shanghai, one of the biggest city in south China. Economic and energy efficiency of three residential space heating ways, including ground source heat pump (GSHP), air source heat pump (ASHP) and wall-hung gas boiler (WHGB), are assessed based on Long-term measured data. The results show that the heat consumption of the building is 120 kWh/m2/y during the heating season, and the seasonal energy efficiency ratio (SEER) of the GSHP, ASHP and WHGB systems are 3.27, 2.30, 0.88 respectively. Compared to ASHP and WHGB, energy savings of GSHP during the heating season are 6.2 kgce/(m2.y) and 2.2 kgce/(m2.y), and the payback period of GSHP are 13.3 and 7.6 years respectively. The sensitivity analysis of various factors that affect the payback period is carried out, and the results suggest that SEER is the most critical factor affecting the feasibility of ground source heat pump application, followed by building load factor and energy price factor. These findings of the research have led the author to the conclusion that ground source heat pump for residential space heating in Shanghai is a good alternative, which can achieve significant energy saving benefits, and a good system design and operation management are key factors that can shorten the payback period.