Applicability of an organic Rankine cycle for a liquid desiccant-assisted dedicated outdoor air system in apartments

This study investigates the dehumidification and energy performance of central ventilation systems based on a liquid desiccant-assisted dedicated outdoor air system applied to an apartment residential building. This heat-driven central ventilation system should receive heat energy because of regener...

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Autores principales:	Beom-Jun Kim, Hye-Won Dong, Jae-Weon Jeong
Formato:	article
Lenguaje:	EN
Publicado:	Elsevier 2021
Materias:	Organic Rankine cycle Waste heat Heat-driven system Central ventilation system Apartments Engineering (General). Civil engineering (General) TA1-2040
Acceso en línea:	https://doaj.org/article/a1d5635c20d14443a6f5185e4ff50094
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spelling	oai:doaj.org-article:a1d5635c20d14443a6f5185e4ff500942021-11-22T04:25:20ZApplicability of an organic Rankine cycle for a liquid desiccant-assisted dedicated outdoor air system in apartments2214-157X10.1016/j.csite.2021.101663https://doaj.org/article/a1d5635c20d14443a6f5185e4ff500942021-12-01T00:00:00Zhttp://www.sciencedirect.com/science/article/pii/S2214157X21008261https://doaj.org/toc/2214-157XThis study investigates the dehumidification and energy performance of central ventilation systems based on a liquid desiccant-assisted dedicated outdoor air system applied to an apartment residential building. This heat-driven central ventilation system should receive heat energy because of regenerating the liquid desiccant. An organic Rankine cycle (ORC) consists of the central ventilation system proposed in this study to provide heat to the regeneration of the desiccant solution. The overall configuration of the ventilation system consists of three main devices, a liquid type of desiccant system, an evaporative cooler driven indirectly to utilize free cooling energy, and the electric heating coil to supply the process air at a neutral temperature condition. The size of the ORC is determined to provide the base electricity demand of community facilities in the apartment selected in this study. The evaluation of the size and energy performance is conducted through a detailed simulation. The results of the energy simulation are compared with heat-driven desiccant wheel and conventional energy recovery ventilation systems. The proposed system demonstrates 4%–24% lower annual primary energy consumption than two existing ventilation systems. This result can be expected that the proposed liquid desiccant-based central ventilation system incorporating ORC is possible to contribute to the achievement of the zero-energy building by using both electricity and heat energy.Beom-Jun KimHye-Won DongJae-Weon JeongElsevierarticleOrganic Rankine cycleWaste heatHeat-driven systemCentral ventilation systemApartmentsEngineering (General). Civil engineering (General)TA1-2040ENCase Studies in Thermal Engineering, Vol 28, Iss , Pp 101663- (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Organic Rankine cycle Waste heat Heat-driven system Central ventilation system Apartments Engineering (General). Civil engineering (General) TA1-2040
spellingShingle	Organic Rankine cycle Waste heat Heat-driven system Central ventilation system Apartments Engineering (General). Civil engineering (General) TA1-2040 Beom-Jun Kim Hye-Won Dong Jae-Weon Jeong Applicability of an organic Rankine cycle for a liquid desiccant-assisted dedicated outdoor air system in apartments
description	This study investigates the dehumidification and energy performance of central ventilation systems based on a liquid desiccant-assisted dedicated outdoor air system applied to an apartment residential building. This heat-driven central ventilation system should receive heat energy because of regenerating the liquid desiccant. An organic Rankine cycle (ORC) consists of the central ventilation system proposed in this study to provide heat to the regeneration of the desiccant solution. The overall configuration of the ventilation system consists of three main devices, a liquid type of desiccant system, an evaporative cooler driven indirectly to utilize free cooling energy, and the electric heating coil to supply the process air at a neutral temperature condition. The size of the ORC is determined to provide the base electricity demand of community facilities in the apartment selected in this study. The evaluation of the size and energy performance is conducted through a detailed simulation. The results of the energy simulation are compared with heat-driven desiccant wheel and conventional energy recovery ventilation systems. The proposed system demonstrates 4%–24% lower annual primary energy consumption than two existing ventilation systems. This result can be expected that the proposed liquid desiccant-based central ventilation system incorporating ORC is possible to contribute to the achievement of the zero-energy building by using both electricity and heat energy.
format	article
author	Beom-Jun Kim Hye-Won Dong Jae-Weon Jeong
author_facet	Beom-Jun Kim Hye-Won Dong Jae-Weon Jeong
author_sort	Beom-Jun Kim
title	Applicability of an organic Rankine cycle for a liquid desiccant-assisted dedicated outdoor air system in apartments
title_short	Applicability of an organic Rankine cycle for a liquid desiccant-assisted dedicated outdoor air system in apartments
title_full	Applicability of an organic Rankine cycle for a liquid desiccant-assisted dedicated outdoor air system in apartments
title_fullStr	Applicability of an organic Rankine cycle for a liquid desiccant-assisted dedicated outdoor air system in apartments
title_full_unstemmed	Applicability of an organic Rankine cycle for a liquid desiccant-assisted dedicated outdoor air system in apartments
title_sort	applicability of an organic rankine cycle for a liquid desiccant-assisted dedicated outdoor air system in apartments
publisher	Elsevier
publishDate	2021
url	https://doaj.org/article/a1d5635c20d14443a6f5185e4ff50094
work_keys_str_mv	AT beomjunkim applicabilityofanorganicrankinecycleforaliquiddesiccantassisteddedicatedoutdoorairsysteminapartments AT hyewondong applicabilityofanorganicrankinecycleforaliquiddesiccantassisteddedicatedoutdoorairsysteminapartments AT jaeweonjeong applicabilityofanorganicrankinecycleforaliquiddesiccantassisteddedicatedoutdoorairsysteminapartments
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Applicability of an organic Rankine cycle for a liquid desiccant-assisted dedicated outdoor air system in apartments

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