Experimental Study of the Air Heat Pump for Domestic Hot Water

The article contains the results of the experimental research of the air heat pump for the preparation of domestic hot water (DHW). An installation consisting of a modular heat pump for hot water connected to two storage tanks with a capacity of 130 dm3 each was the object of the research. The artic...

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Main Author: Mariusz Szreder
Format: Article
Language:English
Published: AIDIC Servizi S.r.l. 2018-08-01
Series:Chemical Engineering Transactions
Online Access:https://www.cetjournal.it/index.php/cet/article/view/736
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author Mariusz Szreder
author_facet Mariusz Szreder
author_sort Mariusz Szreder
collection DOAJ
description The article contains the results of the experimental research of the air heat pump for the preparation of domestic hot water (DHW). An installation consisting of a modular heat pump for hot water connected to two storage tanks with a capacity of 130 dm3 each was the object of the research. The article presents the results of investigations on the influence of the supply air temperature in the evaporator cycle and the variable heat load of the condenser on the heating capacity of the heat pump and the coefficient of performance (COP). The tests were carried out for water heating cycles in the storage tank from room temperature to 50 °C. The research shows that heating water in a 130 dm3 storage tank with ventilation or external air at a temperature above 15 °C takes an average of 2 h, and the heat pump consumes approx. 2.2 kWh of energy per heating cycle. Pump operation in winter is possible with the use of ventilation air, but with the discharge of air cooled outside the building. In order to ensure conditions for effective compressor operation, it is advisable to gradate heat load of the heat pump. The optimal solution is to use a circulating pump with smooth regulation of performance. The air source heat pump for DHW heating is an ideal solution for heating systems equipped with solid fuel boilers. It is a maintenance-free and economical system for producing domestic hot water outside the heating season.
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spelling doaj.art-59716687aa69497b98cce604a46424002022-12-21T20:18:13ZengAIDIC Servizi S.r.l.Chemical Engineering Transactions2283-92162018-08-017010.3303/CET1870306Experimental Study of the Air Heat Pump for Domestic Hot WaterMariusz SzrederThe article contains the results of the experimental research of the air heat pump for the preparation of domestic hot water (DHW). An installation consisting of a modular heat pump for hot water connected to two storage tanks with a capacity of 130 dm3 each was the object of the research. The article presents the results of investigations on the influence of the supply air temperature in the evaporator cycle and the variable heat load of the condenser on the heating capacity of the heat pump and the coefficient of performance (COP). The tests were carried out for water heating cycles in the storage tank from room temperature to 50 °C. The research shows that heating water in a 130 dm3 storage tank with ventilation or external air at a temperature above 15 °C takes an average of 2 h, and the heat pump consumes approx. 2.2 kWh of energy per heating cycle. Pump operation in winter is possible with the use of ventilation air, but with the discharge of air cooled outside the building. In order to ensure conditions for effective compressor operation, it is advisable to gradate heat load of the heat pump. The optimal solution is to use a circulating pump with smooth regulation of performance. The air source heat pump for DHW heating is an ideal solution for heating systems equipped with solid fuel boilers. It is a maintenance-free and economical system for producing domestic hot water outside the heating season.https://www.cetjournal.it/index.php/cet/article/view/736
spellingShingle Mariusz Szreder
Experimental Study of the Air Heat Pump for Domestic Hot Water
Chemical Engineering Transactions
title Experimental Study of the Air Heat Pump for Domestic Hot Water
title_full Experimental Study of the Air Heat Pump for Domestic Hot Water
title_fullStr Experimental Study of the Air Heat Pump for Domestic Hot Water
title_full_unstemmed Experimental Study of the Air Heat Pump for Domestic Hot Water
title_short Experimental Study of the Air Heat Pump for Domestic Hot Water
title_sort experimental study of the air heat pump for domestic hot water
url https://www.cetjournal.it/index.php/cet/article/view/736
work_keys_str_mv AT mariuszszreder experimentalstudyoftheairheatpumpfordomestichotwater