Effects of ambient conditions on solar assisted heat pump systems: a review

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dc.authorid0000-0002-8098-6417
dc.authorid0000-0003-1018-5793
dc.contributor.authorSezen, Kutbay
dc.contributor.authorTuncer, Azim Dogus
dc.contributor.authorAkyuz, Ali Ozhan
dc.contributor.authorGungor, Afsin
dc.date.accessioned2026-01-24T12:31:18Z
dc.date.available2026-01-24T12:31:18Z
dc.date.issued2021
dc.departmentAlanya Alaaddin Keykubat Üniversitesi
dc.description.abstractSolar assisted heat pump (SAHP) systems aim to increase the performance of heat pumps by supporting with solar energy using various heating modes, whose performances depend on ambient conditions. In the literature, SAHP systems are classified by structure types, and the heating mode options are not considered as the main priority of the design but a result of the structure of the system. This paper aimed to investigate the effect of ambient conditions on heating modes, and identify the preferable ambient condition ranges for each SAHP system depends on their heating modes, by using a narrative review of 47 recent studies, that shed light on the problem. For this purpose, direct solar heating (DSH), air source heat pump (ASHP), solar source heat pump (SSHP) and solar-air source heat pump (S/ASHP) modes were stated as the basic heating modes of SAHP systems. In accordance with the literature, SAHP systems were classified as direct expansion solar assisted heat pump (DX-SAHP) and series, parallel and dual source indirect expansion solar assisted heat pumps (IDX-SAHP). Solar irradiation, ambient temperature, relative humidity and wind speed has been taken as major ambient conditions to investigate. Reviewed studies indicated that, parallel and series IDX-SAHP are preferable in high solar irradiations about 800 W/m2 with their DSH mode options. Frosting on evaporator is prevented in DX-SAHP with its S/ASHP mode, and even in the presence of frosting, unlike IDX-SAHPs ASHP mode, freezing is a factor that improves performance on flat evaporator in cold and humid conditions. This study indicates that there are obscure areas for future studies to focus on for a better comparison between SAHP types. Moreover, proposed novel designs of this paper, such as solar preheating of air in IDX-SAHP systems to add S/ASHP mode as an option, might enhance the performance and applicability of SAHP systems.
dc.identifier.doi10.1016/j.scitotenv.2021.146362
dc.identifier.issn0048-9697
dc.identifier.issn1879-1026
dc.identifier.pmid33725598
dc.identifier.scopus2-s2.0-85102367517
dc.identifier.scopusqualityQ1
dc.identifier.urihttps://doi.org/10.1016/j.scitotenv.2021.146362
dc.identifier.urihttps://hdl.handle.net/20.500.12868/5790
dc.identifier.volume778
dc.identifier.wosWOS:000655718000005
dc.identifier.wosqualityQ1
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.indekslendigikaynakPubMed
dc.language.isoen
dc.publisherElsevier
dc.relation.ispartofScience of The Total Environment
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.snmzKA_WoS_20260121
dc.subjectSolar assisted heat pump
dc.subjectAmbient condition
dc.subjectSolar irradiation
dc.subjectAmbient temperature
dc.subjectRelative humidity
dc.subjectWind speed
dc.titleEffects of ambient conditions on solar assisted heat pump systems: a review
dc.typeReview Article

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