Operational and Economic Analysis of GSHP Coupled with Refrigeration Systems in UK Supermarkets

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Title: Operational and Economic Analysis of GSHP Coupled with Refrigeration Systems in UK Supermarkets
Authors: Acha Izquierdo, S
Dalpane, P
Shah, N
Item Type: Conference Paper
Abstract: Ground Source Heat Pumps (GSHP) are capable of reducing energy consumption by operating at higher efficiencies than conventional gas systems, especially if coupled with refrigeration units such as in supermarkets. In principle, the heat rejected by refrigerators can be harnessed to raise the efficiency of the heat pumps. This paper presents the results of an operational and economic analysis conducted on this innovative system. Overall, the efficiency of all the GSHP systems under consideration appears to be above the eligibility threshold for the UK Government’s incentive (Renewable Heat incentive, RHI), with the average Seasonal Coefficient of Performance (SCOP) of the stores being 3.0 in 2014. From an economic perspective, such average performance leads to more than £120,000 of operational savings per year compared to gas boiler systems. Calculations show an investment Payback Time (PBT) of less than 8 years. Finally, the paper highlights potential cost reductions achievable through operational and design modifications. Overall results show that GSHP coupled with refrigeration systems present sound fundamentals to be considered as an attractive investment opportunity for food retailers.
Issue Date: 25-Jun-2016
Date of Acceptance: 1-Feb-2016
URI: http://hdl.handle.net/10044/1/39899
Publisher: ASHRAE
Journal / Book Title: 2016 ASHRAE Annual Conference Proceedings
Copyright Statement: This article or paper was published in 2016 ASHRAE Annual Conference Proceedings. © 2016 ASHRAE, Inc. This article may not be copied and/or distributed electronically or in paper form without permission of ASHRAE. For more information visit www.ashrae.org.
Sponsor/Funder: Sainsbury's Supermarkets Ltd
Funder's Grant Number: CEPSE_P57236
Conference Name: 2016 ASHRAE Annual Conference
Publication Status: Published
Start Date: 2016-06-25
Finish Date: 2016-06-29
Conference Place: St. Louis, MO, USA
Appears in Collections:Faculty of Engineering
Centre for Environmental Policy
Chemical Engineering
Faculty of Natural Sciences

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