Imperial College London

Dr Salvador Acha

Faculty of EngineeringDepartment of Chemical Engineering

Research Fellow



+44 (0)20 7594 3379salvador.acha Website CV




c410Roderic Hill BuildingSouth Kensington Campus






BibTex format

author = {Acha, Izquierdo S and Dalpane, P and Shah, N},
publisher = {ASHRAE},
title = {Operational and Economic Analysis of GSHP Coupled with Refrigeration Systems in UK Supermarkets},
url = {},
year = {2016}

RIS format (EndNote, RefMan)

AB - Ground Source Heat Pumps (GSHP) are capable of reducing energy consumption by operating at higher efficiencies than conventional gas systems, especiallyif coupled with refrigeration units such as in supermarkets. In principle, the heat rejected by refrigerators can be harnessed to raise the efficiency of the heatpumps. This paper presents the results of an operational and economic analysis conducted on this innovative system. Overall, the efficiency of all the GSHPsystems under consideration appears to be above the eligibility threshold for the UK Government’s incentive (Renewable Heat incentive, RHI), with theaverage Seasonal Coefficient of Performance (SCOP) of the stores being 3.0 in 2014. From an economic perspective, such average performance leads tomore than £120,000 of operational savings per year compared to gas boiler systems. Calculations show an investment Payback Time (PBT) of less than8 years. Finally, the paper highlights potential cost reductions achievable through operational and design modifications. Overall results show that GSHPcoupled with refrigeration systems present sound fundamentals to be considered as an attractive investment opportunity for food retailers.
AU - Acha,Izquierdo S
AU - Dalpane,P
AU - Shah,N
PY - 2016///
TI - Operational and Economic Analysis of GSHP Coupled with Refrigeration Systems in UK Supermarkets
UR -
ER -