Determination of heat transfer characteristics of solar thermal collectors as heat source for a residential heat pump

Maarten G. Sourbron; Nesrin Ozalp

doi:10.1115/IMECE201551461

Determination of heat transfer characteristics of solar thermal collectors as heat source for a residential heat pump

Maarten G. Sourbron, Nesrin Ozalp

Mechanical & Industrial Engineering

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

One of the best ways of making efficient use of energy in residential units is to use heat pump. Heat pump performance can be further enhanced by integrating a solar thermal unit to provide hot water and subsidize space heating. This paper presents numerically examined energy feasibility study of a solar driven heat pump system for a low energy residence, where a flat plate solar collector served as the sole low temperature heat source. A parametric study on the ambient-tosolar fluid heat transfer coefficient has been conducted to determine the required solar collector heat transfer characteristics in this system. Solar collector area and storage tank volume were varied to investigate their impact on the system performance. A new performance indicator availability was defined to assess the contribution of the solar collector as low temperature energy source of the heat pump. Results showed that the use of a solar collector as low temperature heat source was feasible if its heat transfer rate (UA-value) was 200 W/K or higher. Achievement of this value with a realistic solar collector area (A-value) required an increase of the overall ambient-to-solar fluid heat transfer coefficient (U-value) with a factor of 6 to 8 compared to the base case with only natural convection heat exchange between solar collector cover and ambient.

Original language	English (US)
Title of host publication	Energy
Publisher	American Society of Mechanical Engineers (ASME)
ISBN (Electronic)	9780791857441
DOIs	https://doi.org/10.1115/IMECE201551461
State	Published - 2015
Event	ASME 2015 International Mechanical Engineering Congress and Exposition, IMECE 2015 - Houston, United States Duration: Nov 13 2015 → Nov 19 2015

Publication series

Name	ASME International Mechanical Engineering Congress and Exposition, Proceedings (IMECE)
Volume	6B-2015

Conference

Conference	ASME 2015 International Mechanical Engineering Congress and Exposition, IMECE 2015
Country/Territory	United States
City	Houston
Period	11/13/15 → 11/19/15

Bibliographical note

Funding Information:
This research was conducted in the framework of the IWT-TETRA project 'SolarHeat'. The authors greatly acknowledge the financial support of IWT, the Flemish government agency for Innovation by Science and Technology, and of the collaborating companies of this research project (list is available at http://zon-warm.lessius.eu).

Funding Information:
This research was conducted in the framework of the IWT-TETRA project ‘SolarHeat’. The authors greatly acknowledge the financial support of IWT, the Flemish government agency for Innovation by Science and Technology, and of the collaborating companies of this research project (list is available at http://zon-warm.lessius.eu).

Publisher Copyright:
Copyright © 2015 by ASME.

Keywords

Heat pump
Low temperature heat source
Solar collector

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1115/IMECE201551461

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Determination of heat transfer characteristics of solar thermal collectors as heat source for a residential heat pump. / Sourbron, Maarten G.; Ozalp, Nesrin.
Energy. American Society of Mechanical Engineers (ASME), 2015. (ASME International Mechanical Engineering Congress and Exposition, Proceedings (IMECE); Vol. 6B-2015).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Sourbron, MG & Ozalp, N 2015, Determination of heat transfer characteristics of solar thermal collectors as heat source for a residential heat pump. in Energy. ASME International Mechanical Engineering Congress and Exposition, Proceedings (IMECE), vol. 6B-2015, American Society of Mechanical Engineers (ASME), ASME 2015 International Mechanical Engineering Congress and Exposition, IMECE 2015, Houston, United States, 11/13/15. https://doi.org/10.1115/IMECE201551461

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abstract = "One of the best ways of making efficient use of energy in residential units is to use heat pump. Heat pump performance can be further enhanced by integrating a solar thermal unit to provide hot water and subsidize space heating. This paper presents numerically examined energy feasibility study of a solar driven heat pump system for a low energy residence, where a flat plate solar collector served as the sole low temperature heat source. A parametric study on the ambient-tosolar fluid heat transfer coefficient has been conducted to determine the required solar collector heat transfer characteristics in this system. Solar collector area and storage tank volume were varied to investigate their impact on the system performance. A new performance indicator availability was defined to assess the contribution of the solar collector as low temperature energy source of the heat pump. Results showed that the use of a solar collector as low temperature heat source was feasible if its heat transfer rate (UA-value) was 200 W/K or higher. Achievement of this value with a realistic solar collector area (A-value) required an increase of the overall ambient-to-solar fluid heat transfer coefficient (U-value) with a factor of 6 to 8 compared to the base case with only natural convection heat exchange between solar collector cover and ambient.",

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AB - One of the best ways of making efficient use of energy in residential units is to use heat pump. Heat pump performance can be further enhanced by integrating a solar thermal unit to provide hot water and subsidize space heating. This paper presents numerically examined energy feasibility study of a solar driven heat pump system for a low energy residence, where a flat plate solar collector served as the sole low temperature heat source. A parametric study on the ambient-tosolar fluid heat transfer coefficient has been conducted to determine the required solar collector heat transfer characteristics in this system. Solar collector area and storage tank volume were varied to investigate their impact on the system performance. A new performance indicator availability was defined to assess the contribution of the solar collector as low temperature energy source of the heat pump. Results showed that the use of a solar collector as low temperature heat source was feasible if its heat transfer rate (UA-value) was 200 W/K or higher. Achievement of this value with a realistic solar collector area (A-value) required an increase of the overall ambient-to-solar fluid heat transfer coefficient (U-value) with a factor of 6 to 8 compared to the base case with only natural convection heat exchange between solar collector cover and ambient.

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Determination of heat transfer characteristics of solar thermal collectors as heat source for a residential heat pump

Abstract

Publication series

Conference

Bibliographical note

Keywords

UN SDGs

Access

OpenUrl availability

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Cite this