An Assessment of Heating Load Reduction by a Solar Air Heater in a Residential Passive Ventilation System

In this paper, the authors examined the technology to maximize the use of renewable energy. Passive ventilation systems are expected to reduce the energy consumption of the fan and the maintenance burden. In addition, the wall-mounted solar air heater can supply thermal energy without using any ener...

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Autores principales:	Junichiro Matsunaga, Koki Kikuta, Hideki Hirakawa, Keita Mizuno, Masaki Tajima, Motoya Hayashi, Akira Fukushima
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	solar air heater passive ventilation ventilation load residential house actual measurement simulation Technology T
Acceso en línea:	https://doaj.org/article/52064119cb3741c09bd7d2fd7018fb00
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spelling	oai:doaj.org-article:52064119cb3741c09bd7d2fd7018fb002021-11-25T17:27:33ZAn Assessment of Heating Load Reduction by a Solar Air Heater in a Residential Passive Ventilation System10.3390/en142276511996-1073https://doaj.org/article/52064119cb3741c09bd7d2fd7018fb002021-11-01T00:00:00Zhttps://www.mdpi.com/1996-1073/14/22/7651https://doaj.org/toc/1996-1073In this paper, the authors examined the technology to maximize the use of renewable energy. Passive ventilation systems are expected to reduce the energy consumption of the fan and the maintenance burden. In addition, the wall-mounted solar air heater can supply thermal energy without using any energy at all. Therefore, this paper presents a “passive ventilation system with a solar air heater” that combines a passive ventilation system with the solar air heater to preheat the air. This system can reduce the ventilation load. To evaluate the solar air heater performance in a real environment, we developed a simulation for calculating the heat collection capacity of the solar air heater, and then the system was implemented in a real building for verification. The simulation performs hourly unsteady calculations, allowing for accurate evaluation of the annual simulation. Based on the measurement results, the effects of heating load reduction and prediction methods are presented. The solar air heater reduced the monthly ventilation load by up to 50% or more, and by at least 15%. It was also confirmed that there was a high correlation between the actual measurements and the simulation results.Junichiro MatsunagaKoki KikutaHideki HirakawaKeita MizunoMasaki TajimaMotoya HayashiAkira FukushimaMDPI AGarticlesolar air heaterpassive ventilationventilation loadresidential houseactual measurementsimulationTechnologyTENEnergies, Vol 14, Iss 7651, p 7651 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	solar air heater passive ventilation ventilation load residential house actual measurement simulation Technology T
spellingShingle	solar air heater passive ventilation ventilation load residential house actual measurement simulation Technology T Junichiro Matsunaga Koki Kikuta Hideki Hirakawa Keita Mizuno Masaki Tajima Motoya Hayashi Akira Fukushima An Assessment of Heating Load Reduction by a Solar Air Heater in a Residential Passive Ventilation System
description	In this paper, the authors examined the technology to maximize the use of renewable energy. Passive ventilation systems are expected to reduce the energy consumption of the fan and the maintenance burden. In addition, the wall-mounted solar air heater can supply thermal energy without using any energy at all. Therefore, this paper presents a “passive ventilation system with a solar air heater” that combines a passive ventilation system with the solar air heater to preheat the air. This system can reduce the ventilation load. To evaluate the solar air heater performance in a real environment, we developed a simulation for calculating the heat collection capacity of the solar air heater, and then the system was implemented in a real building for verification. The simulation performs hourly unsteady calculations, allowing for accurate evaluation of the annual simulation. Based on the measurement results, the effects of heating load reduction and prediction methods are presented. The solar air heater reduced the monthly ventilation load by up to 50% or more, and by at least 15%. It was also confirmed that there was a high correlation between the actual measurements and the simulation results.
format	article
author	Junichiro Matsunaga Koki Kikuta Hideki Hirakawa Keita Mizuno Masaki Tajima Motoya Hayashi Akira Fukushima
author_facet	Junichiro Matsunaga Koki Kikuta Hideki Hirakawa Keita Mizuno Masaki Tajima Motoya Hayashi Akira Fukushima
author_sort	Junichiro Matsunaga
title	An Assessment of Heating Load Reduction by a Solar Air Heater in a Residential Passive Ventilation System
title_short	An Assessment of Heating Load Reduction by a Solar Air Heater in a Residential Passive Ventilation System
title_full	An Assessment of Heating Load Reduction by a Solar Air Heater in a Residential Passive Ventilation System
title_fullStr	An Assessment of Heating Load Reduction by a Solar Air Heater in a Residential Passive Ventilation System
title_full_unstemmed	An Assessment of Heating Load Reduction by a Solar Air Heater in a Residential Passive Ventilation System
title_sort	assessment of heating load reduction by a solar air heater in a residential passive ventilation system
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/52064119cb3741c09bd7d2fd7018fb00
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An Assessment of Heating Load Reduction by a Solar Air Heater in a Residential Passive Ventilation System

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