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2023 | OriginalPaper | Chapter

Low-Enthalpy Geothermal Applications

Authors : Tine Aprianti, Kandadai Srinivasan, Hui Tong Chua

Published in: Geothermal Heat Pump Systems

Publisher: Springer International Publishing

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Abstract

This chapter discusses two low-enthalpy geothermal applications in Perth, Western Australia. The first application pertains to using tepid groundwater for the municipal heating of Olympic-size outdoor swimming pools. The second application examines the viability of ground source heat pumps (GSHP) against air source heat pumps (ASHP). In the first application, the objective is to develop an accurate sizing methodology to improve the capital effectiveness for geothermal swimming pools. The predicted pool-water temperature and heating demands are compared against on-site measurements at a Leisure Centre. This model can replicate 71 and 73% of the measured heating capacity data within ±25 kW for the 30-m pool and ±35 kW for the 50-m pool, respectively. In the second application, we assess the feasibility of implementing a GSHP vis-à-vis an ASHP for domestic applications. For the second application, the GSHP has a constant coefficient of performance (COP) of 3.8 ± 6.7%, while that of ASHP ranges from 2.2 to 2.7 ± 6.5%. For cooling, the GSHP has a constant COP of 3.1 ± 13%, while that of ASHP varied between 1.4 and 2.4 ± 11.5%. When a GSHP is considered with a planned installation of a borehole for irrigation, the payback period ranges from near-immediate to four years.

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Metadata
Title
Low-Enthalpy Geothermal Applications
Authors
Tine Aprianti
Kandadai Srinivasan
Hui Tong Chua
Copyright Year
2023
DOI
https://doi.org/10.1007/978-3-031-24524-4_2