Underfloor Heating Using Room Air Conditioners with Air Source Heat Pump in a Foundation Insulation House

A good thermal environment is important in a place where occupants stay for a long time. Since heating a house consumes a lot of energy, an energy-efficient heating method will be required. Then, by combining a heat pump and underfloor heating, there is a possibility that both thermal comfort and en...

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Autores principales:	Hiroki Ikeda, Yasushi Ooi, Takashi Nakaya
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	cold region house heated crawl space air source heat pump foundation insulation thermal comfort Technology T
Acceso en línea:	https://doaj.org/article/fe4f4757ef434de0bb7c608bc7e8599d
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spelling	oai:doaj.org-article:fe4f4757ef434de0bb7c608bc7e8599d2021-11-11T15:51:09ZUnderfloor Heating Using Room Air Conditioners with Air Source Heat Pump in a Foundation Insulation House10.3390/en142170341996-1073https://doaj.org/article/fe4f4757ef434de0bb7c608bc7e8599d2021-10-01T00:00:00Zhttps://www.mdpi.com/1996-1073/14/21/7034https://doaj.org/toc/1996-1073A good thermal environment is important in a place where occupants stay for a long time. Since heating a house consumes a lot of energy, an energy-efficient heating method will be required. Then, by combining a heat pump and underfloor heating, there is a possibility that both thermal comfort and energy saving can be achieved. The survey was conducted on a detached house located in Nagano Prefecture, Japan. The average outside air temperature was 4.2 °C. This study investigated the indoor thermal environment, evaluated the operating performance of the heat pump, and calculated the heat load by two-dimensional analysis. More than 80% of the subjects were satisfied with the thermal environment and the neutral temperature was 18.9 °C. In the operation of the heat pump, defrost operation was confirmed, but the average COP was 2.9, and it operated efficiently. In addition, the heat loss from the foundation slab was examined. Proper insulation placement has shown the potential to reduce heat loss. In conclusion, the use of heat pumps as a heat source has been shown to be efficient even in cold climates, and this study supports the construction of new heating methods.Hiroki IkedaYasushi OoiTakashi NakayaMDPI AGarticlecold regionhouseheated crawl spaceair source heat pumpfoundation insulationthermal comfortTechnologyTENEnergies, Vol 14, Iss 7034, p 7034 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	cold region house heated crawl space air source heat pump foundation insulation thermal comfort Technology T
spellingShingle	cold region house heated crawl space air source heat pump foundation insulation thermal comfort Technology T Hiroki Ikeda Yasushi Ooi Takashi Nakaya Underfloor Heating Using Room Air Conditioners with Air Source Heat Pump in a Foundation Insulation House
description	A good thermal environment is important in a place where occupants stay for a long time. Since heating a house consumes a lot of energy, an energy-efficient heating method will be required. Then, by combining a heat pump and underfloor heating, there is a possibility that both thermal comfort and energy saving can be achieved. The survey was conducted on a detached house located in Nagano Prefecture, Japan. The average outside air temperature was 4.2 °C. This study investigated the indoor thermal environment, evaluated the operating performance of the heat pump, and calculated the heat load by two-dimensional analysis. More than 80% of the subjects were satisfied with the thermal environment and the neutral temperature was 18.9 °C. In the operation of the heat pump, defrost operation was confirmed, but the average COP was 2.9, and it operated efficiently. In addition, the heat loss from the foundation slab was examined. Proper insulation placement has shown the potential to reduce heat loss. In conclusion, the use of heat pumps as a heat source has been shown to be efficient even in cold climates, and this study supports the construction of new heating methods.
format	article
author	Hiroki Ikeda Yasushi Ooi Takashi Nakaya
author_facet	Hiroki Ikeda Yasushi Ooi Takashi Nakaya
author_sort	Hiroki Ikeda
title	Underfloor Heating Using Room Air Conditioners with Air Source Heat Pump in a Foundation Insulation House
title_short	Underfloor Heating Using Room Air Conditioners with Air Source Heat Pump in a Foundation Insulation House
title_full	Underfloor Heating Using Room Air Conditioners with Air Source Heat Pump in a Foundation Insulation House
title_fullStr	Underfloor Heating Using Room Air Conditioners with Air Source Heat Pump in a Foundation Insulation House
title_full_unstemmed	Underfloor Heating Using Room Air Conditioners with Air Source Heat Pump in a Foundation Insulation House
title_sort	underfloor heating using room air conditioners with air source heat pump in a foundation insulation house
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/fe4f4757ef434de0bb7c608bc7e8599d
work_keys_str_mv	AT hirokiikeda underfloorheatingusingroomairconditionerswithairsourceheatpumpinafoundationinsulationhouse AT yasushiooi underfloorheatingusingroomairconditionerswithairsourceheatpumpinafoundationinsulationhouse AT takashinakaya underfloorheatingusingroomairconditionerswithairsourceheatpumpinafoundationinsulationhouse
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Underfloor Heating Using Room Air Conditioners with Air Source Heat Pump in a Foundation Insulation House

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