Build-up and performance test of a novel solar thermal roof for heat pump operation

Büker, Mahmut Sami; Riffat, Saffa

doi:10.1080/01430750.2015.1121920

Cited by 20 publications

(5 citation statements)

References 42 publications

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“…Over the last decade, a variety of solar energy utilization systems have been extensively used in actual applications [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19]. These systems are deemed to be an attractive approach for solving global energy shortage problems due to its renewable and sustainable nature.…”

Section: Introductionmentioning

confidence: 99%

Investigation of the Dynamic Melting Process in a Thermal Energy Storage Unit Using a Helical Coil Heat Exchanger

et al. 2017

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Abstract:In this study, the dynamic melting process of the phase change material (PCM) in a vertical cylindrical tube-in-tank thermal energy storage (TES) unit was investigated through numerical simulations and experimental measurements. To ensure good heat exchange performance, a concentric helical coil was inserted into the TES unit to pipe the heat transfer fluid (HTF). A numerical model using the computational fluid dynamics (CFD) approach was developed based on the enthalpy-porosity method to simulate the unsteady melting process including temperature and liquid fraction variations. Temperature measurements using evenly spaced thermocouples were conducted, and the temperature variation at three locations inside the TES unit was recorded. The effects of the HTF inlet parameters were investigated by parametric studies with different temperatures and flow rate values. Reasonably good agreement was achieved between the numerical prediction and the temperature measurement, which confirmed the numerical simulation accuracy. The numerical results showed the significance of buoyancy effect for the dynamic melting process. The system TES performance was very sensitive to the HTF inlet temperature. By contrast, no apparent influences can be found when changing the HTF flow rates. This study provides a comprehensive solution to investigate the heat exchange process of the TES system using PCM.

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Section: Introductionmentioning

confidence: 99%

Investigation of the Dynamic Melting Process in a Thermal Energy Storage Unit Using a Helical Coil Heat Exchanger

et al. 2017

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“…He et al [11] experimentally studied a SAASHP heating system using heat pipe as the solar collector and reached a COP of 4.93 for a collector area of 2.4 m 2 . Buker and Riffat [12] designed a solar roof that integrated the solar collector with the building structure. With a solar roof area of 1.92 m 2 , the COP of the system was 2.29.…”

Section: Highlights 1 Introductionmentioning

confidence: 99%

Investigation of solar assisted air source heat pump heating system integrating compound parabolic concentrator-capillary tube solar collectors

Yang

Zhou

et al. 2023

Energy Conversion and Management

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“…For domestic heating and hot water production, a heat pump can be used [20][21][22][23][24][25][26][27]. Heat pumps are designed to move thermal energy in the opposite direction of spontaneous heat trans-THERMAL SCIENCE: Year 2019, Vol.…”

Section: Introductionmentioning

confidence: 99%

Hybrid system solar collectors - heat pumps for domestic water heating

2019

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This paper deals with the use of solar energy, heat pumps, and solar system-heat pump combinations for domestic water heating. The testing of solar tiles, flat plate collectors as an autonomous system, as well as flat plate collector-heat pump and solar tile-heat pump combinations, are presented. Black-coloured water absorbs solar radiation flows through solar tiles made of transparent polymethyl methacrylate (CH2C(CH3)COOCH3). At the same time, solar tiles are used as a roof covering and as a solar radiation collector. Hot water from solar tiles or a flat plate collector is directed to the heat pump, which increases the temperature of water entering the boiler heating coil. The heat of water heated in solar tiles or in flat plate collectors serves as a source of energy for the heat pump. Since the goal was realistically evaluate the efficiency of solar tiles in comparison with the flat plate collector, extensive measurements of both systems under identical condition were carried out. The experiments were carried out in rainy, cloudy, and clear weather.

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Build-up and performance test of a novel solar thermal roof for heat pump operation

Abstract: The

Cited by 20 publications

References 42 publications

Investigation of the Dynamic Melting Process in a Thermal Energy Storage Unit Using a Helical Coil Heat Exchanger

Investigation of the Dynamic Melting Process in a Thermal Energy Storage Unit Using a Helical Coil Heat Exchanger

Investigation of solar assisted air source heat pump heating system integrating compound parabolic concentrator-capillary tube solar collectors

Hybrid system solar collectors - heat pumps for domestic water heating

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