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Research Papers

Solar-Assisted Heat Pump Systems: A Review of Existing Studies and Their Applicability to the Canadian Residential Sector

[+] Author and Article Information
Jenny Chu

Department of Mechanical
and Aerospace Engineering,
Carleton University,
Ottawa ON K1S 5B6Canada
e-mail: Jenny.Chu@carleton.ca

Cynthia A. Cruickshank

Department of Mechanical
and Aerospace Engineering,
Carleton University,
Ottawa ON K1S 5B6Canada
e-mail: Cynthia.Cruickshank@carleton.ca

Contributed by the Solar Energy Division of ASME for publication in the JOURNAL OF SOLAR ENERGY ENGINEERING: INCLUDING WIND ENERGY AND BUILDING ENERGY CONSERVATION. Manuscript received September 19, 2013; final manuscript received April 24, 2014; published online June 17, 2014. Assoc. Editor: Werner Platzer.

J. Sol. Energy Eng 136(4), 041013 (Jun 17, 2014) (9 pages) Paper No: SOL-13-1264; doi: 10.1115/1.4027735 History: Received September 19, 2013; Revised April 24, 2014

Combining solar thermal collectors and heat pumps into a single solar-assisted heat pump (SAHP) system is a promising technology for offsetting domestic hot water (DHW), space-heating, and cooling loads more efficiently. Task 44 of the Solar Heating and Cooling (SHC) Programme of the International Energy Agency (IEA) is currently investigating ways to optimize solar and heat pump systems for residential use. This paper presents a review of past and current work conducted on SAHP systems. Specifically, the key performance data from many studies are highlighted and different system configurations are compared in order to establish insight toward which system configurations are suitable for the Canadian residential sector. It was found that the most suitable configuration for Canadian residential buildings depends on a combination of factors which include occupant behavior, building characteristics, operation parameters, system components, and climate. A large variety of configurations and parameters exist and this made analyzing a specific system, comparing differing systems and establishing an optimal design difficult. It was found that different authors used different performance criterion and this inconsistency also added to the difficulty of comparing the studies of different systems.

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References

Figures

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Fig. 1

Typical indirect solar DHW system [6]

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Fig. 2

Schematic of parallel SAHP

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Fig. 3

Schematic of direct series SAHP (modified from Ref. [3])

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Fig. 4

Schematic of indirect series SAHP (modified from Ref. [3])

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Fig. 5

Schematic of a parallel SAHP space-heating system (modified from Ref. [11])

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Fig. 6

Schematic of a series SAHP space-heating system (modified from Ref. [11])

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Fig. 7

Schematic of a dual source SAHP space-heating system (modified from Ref. [11])

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Fig. 8

Schematic of solar-side SAHP system (modified from Ref. [18])

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