A Method to Analyze the Performance of Geocooling Systems with Borehole Heat Exchangers. Results in a Monitored Residential Building in Southern Alps

Geothermal heat is an increasingly adopted source for satisfying all thermal purposes in buildings by reversible heat pumps (HP). However, for residential buildings located in moderate climates, geocooling, that implies the use of geothermal source for cooling buildings without the operation of HP,...

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Autores principales:	Marco Belliardi, Nerio Cereghetti, Paola Caputo, Simone Ferrari
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	geothermal energy geocooling borehole heat exchangers residential space cooling radiant underfloor systems Technology T
Acceso en línea:	https://doaj.org/article/cad8e5e7a39b4d838571d43976fed2ac
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spelling	oai:doaj.org-article:cad8e5e7a39b4d838571d43976fed2ac2021-11-11T16:07:24ZA Method to Analyze the Performance of Geocooling Systems with Borehole Heat Exchangers. Results in a Monitored Residential Building in Southern Alps10.3390/en142174071996-1073https://doaj.org/article/cad8e5e7a39b4d838571d43976fed2ac2021-11-01T00:00:00Zhttps://www.mdpi.com/1996-1073/14/21/7407https://doaj.org/toc/1996-1073Geothermal heat is an increasingly adopted source for satisfying all thermal purposes in buildings by reversible heat pumps (HP). However, for residential buildings located in moderate climates, geocooling, that implies the use of geothermal source for cooling buildings without the operation of HP, is an efficient alternative for space cooling not yet explored enough. Geocooling allows two main benefits: to cool the buildings by high energy efficiencies improving summer comfort; to recharge the ground if space heating is provided by HP exploiting the geothermal source (GSHP). In these cases, geocooling allows to avoid the decreasing of the performances of the GSHP for space heating over the years. To explore these issues, a method has been developed and tested on a real case: a new residential building in Lugano (southern Switzerland) coupled with 13 borehole heat exchangers. The system provides space heating in winter by a GSHP and space cooling in summer by geocooling. During a 40 months monitoring campaign, data such as temperatures, heat flows and electricity consumptions were recorded to calibrate the model and verify the benefits of such configuration. Focusing on summer operation, the efficiency of the system, after the improvements implemented, is above 30, confirming, at least in similar contexts, the feasibility of geocooling. Achieved results provides knowledge for future installations, underlining the replication potential and the possible limits.Marco BelliardiNerio CereghettiPaola CaputoSimone FerrariMDPI AGarticlegeothermal energygeocoolingborehole heat exchangersresidential space coolingradiant underfloor systemsTechnologyTENEnergies, Vol 14, Iss 7407, p 7407 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	geothermal energy geocooling borehole heat exchangers residential space cooling radiant underfloor systems Technology T
spellingShingle	geothermal energy geocooling borehole heat exchangers residential space cooling radiant underfloor systems Technology T Marco Belliardi Nerio Cereghetti Paola Caputo Simone Ferrari A Method to Analyze the Performance of Geocooling Systems with Borehole Heat Exchangers. Results in a Monitored Residential Building in Southern Alps
description	Geothermal heat is an increasingly adopted source for satisfying all thermal purposes in buildings by reversible heat pumps (HP). However, for residential buildings located in moderate climates, geocooling, that implies the use of geothermal source for cooling buildings without the operation of HP, is an efficient alternative for space cooling not yet explored enough. Geocooling allows two main benefits: to cool the buildings by high energy efficiencies improving summer comfort; to recharge the ground if space heating is provided by HP exploiting the geothermal source (GSHP). In these cases, geocooling allows to avoid the decreasing of the performances of the GSHP for space heating over the years. To explore these issues, a method has been developed and tested on a real case: a new residential building in Lugano (southern Switzerland) coupled with 13 borehole heat exchangers. The system provides space heating in winter by a GSHP and space cooling in summer by geocooling. During a 40 months monitoring campaign, data such as temperatures, heat flows and electricity consumptions were recorded to calibrate the model and verify the benefits of such configuration. Focusing on summer operation, the efficiency of the system, after the improvements implemented, is above 30, confirming, at least in similar contexts, the feasibility of geocooling. Achieved results provides knowledge for future installations, underlining the replication potential and the possible limits.
format	article
author	Marco Belliardi Nerio Cereghetti Paola Caputo Simone Ferrari
author_facet	Marco Belliardi Nerio Cereghetti Paola Caputo Simone Ferrari
author_sort	Marco Belliardi
title	A Method to Analyze the Performance of Geocooling Systems with Borehole Heat Exchangers. Results in a Monitored Residential Building in Southern Alps
title_short	A Method to Analyze the Performance of Geocooling Systems with Borehole Heat Exchangers. Results in a Monitored Residential Building in Southern Alps
title_full	A Method to Analyze the Performance of Geocooling Systems with Borehole Heat Exchangers. Results in a Monitored Residential Building in Southern Alps
title_fullStr	A Method to Analyze the Performance of Geocooling Systems with Borehole Heat Exchangers. Results in a Monitored Residential Building in Southern Alps
title_full_unstemmed	A Method to Analyze the Performance of Geocooling Systems with Borehole Heat Exchangers. Results in a Monitored Residential Building in Southern Alps
title_sort	method to analyze the performance of geocooling systems with borehole heat exchangers. results in a monitored residential building in southern alps
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/cad8e5e7a39b4d838571d43976fed2ac
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A Method to Analyze the Performance of Geocooling Systems with Borehole Heat Exchangers. Results in a Monitored Residential Building in Southern Alps

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