Analysis of ground-source heat pumps in north-of-England homes

The performance of ground-source heat pumps (GSHPs) for domestic use is an increasing area of study in the UK. This paper examines the thermal performance of three bespoke shallow horizontal GSHPs installed in newly built residential houses in northern England as compared with a control house fitted with a standard gas boiler. A 350 m high-density polyethylene pipe with an external diameter of 40 mm was used for each house as a heat pump loop. The study investigated the performance of a single-loop horizontal ground heat exchanger against a double loop. It also investigated rainfall effects on heat extraction by comparing a system with an infiltration trench connected to roof drainage against a system without an infiltration trench above the ground loops. Parameters were monitored for a full year from October 2013 to September 2014. Using the double-loop exchanger has shown an enhanced performance of up to 20% compared with a single loop. The infiltration trench is found to improve performance of the heat...

[1]  Chris Underwood.  On the Design and Response of Domestic Ground-Source Heat Pumps in the UK , 2014 .

[2]  Apostolos Michopoulos,et al.  Operation characteristics and experience of a ground source heat pump system with a vertical ground heat exchanger , 2013 .

[3]  David Jenkins,et al.  Modelling the carbon-saving performance of domestic ground-source heat pumps , 2009 .

[4]  Adam Hawkes,et al.  A review of domestic heat pumps , 2012 .

[5]  Georgios A. Florides,et al.  Ground heat exchangers—A review of systems, models and applications , 2007 .

[6]  Adisa Azapagic,et al.  Domestic heat pumps: Life cycle environmental impacts and potential implications for the UK , 2012 .

[7]  Wei Xiang,et al.  Heating and cooling performance analysis of a ground source heat pump system in Southern Germany , 2015 .

[8]  Denis Fan,et al.  Performance and control of domestic ground-source heat pumps in retrofit installations , 2011 .

[9]  Majdi Hazami,et al.  In-field performance analysis of ground source cooling system with horizontal ground heat exchanger in Tunisia , 2013 .

[10]  V W Goldschmidt,et al.  Heat Pumps: Basics, Types, and Performance Characteristics , 1984 .

[11]  M. Ally,et al.  Exergy analysis and operational efficiency of a horizontal ground-source heat pump system operated in a low-energy test house under simulated occupancy conditions , 2012 .

[12]  R. Lawley,et al.  Initial geological considerations before installing ground source heat pump systems , 2009 .

[13]  Simon Tait,et al.  Effects of coolant flow rate, groundwater table fluctuations and infiltration of rainwater on the efficiency of heat recovery from near surface soil layers , 2015 .

[14]  V. I. Ugursal,et al.  Performance and economic feasibility of ground source heat pumps in cold climate , 1997 .

[15]  Abdeen Mustafa Omer,et al.  Ground-source heat pumps systems and applications , 2008 .

[16]  Mustafa Inalli,et al.  Numerical and experimental analysis of a horizontal ground-coupled heat pump system , 2007 .

[17]  Omer Ozyurt,et al.  Experimental study of vertical ground-source heat pump performance evaluation for cold climate in Turkey , 2011 .

[18]  O. Comakli,et al.  Energy analysis of a solar-ground source heat pump system with vertical closed-loop for heating appl , 2011 .

[19]  Mehmet Esen,et al.  Energy and exergy analysis of a ground-coupled heat pump system with two horizontal ground heat exchangers , 2007 .

[20]  Nurettin Yamankaradeniz,et al.  Experimental study of horizontal ground source heat pump performance for mild climate in Turkey , 2009 .

[21]  Rajat Gupta,et al.  Possible effects of future domestic heat pump installations on the UK energy supply , 2014 .

[22]  Guohui Gan,et al.  Experimental measurement and numerical simulation of horizontal-coupled slinky ground source heat exchangers , 2010 .

[23]  Ladislaus Rybach,et al.  Current status of ground source heat pumps and underground thermal energy storage in Europe , 2003 .

[24]  Hongxing Yang,et al.  Vertical-borehole ground-coupled heat pumps: A review of models and systems , 2010 .