Development and performance of a dual tank solar-assisted heat pump system

Banister, Carsen; Collins, Michael R.

doi:10.1016/j.apenergy.2015.03.130

Cited by 59 publications

(38 citation statements)

References 17 publications

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“…Temperature limits impose additional restrictions on heat pump operation and limits its solar collection benefits when little solar radiation is available and load temperature exceeds 45 ○ C. Using a small or variable speed heat pump was recommended to increase the cycle time and match the heat input of the solar collector. Using findings of this study, Banister et al [11][12][13][14] built a dual tank SAHP system to create additional modes of operation and decrease the amount of purchased energy. Results show that the system was able to maintain the hot water temperature in the 53-57 ○ C range during 99.9% of the year.…”

Section: Acshmentioning

confidence: 99%

“…The SAHP system configuration developed by Banister et al [11] is used in this study. Banister et al investigated the solar thermal system for the Canadian climate and recommended a dual tank configuration to enhance solar energy contribution.…”

Section: System Configurationmentioning

confidence: 99%

“…The float tank and the associated three-way valves (valves A, B, C and D shown in Figure 1) are included to enable the system to harvest solar energy even during low radiation periods. This is achieved by controlling the flow to the float tank so that tank temperature follows the collector temperature [11]. When the system calls for heat and the float tank temperature is above the hot water tank temperature, the water is circulated directly from the float tank into the hot water tank.…”

Section: System Configurationmentioning

confidence: 99%

“…This enables 262 the system to capture more solar energy compared to a conventional solar thermal system. If the 263 HP nominal capacity is much larger compared to the thermal capacity of float tank, the float tank temperature will drop in a short time causing instability in the operation of the SAHP [13]. 265…”

Section: System Configurationmentioning

confidence: 99%

“…Instead of modeling individual components of the HP, the behaviour of the HP system is modeled as a whole based on actual performance data. This approach was used for modeling of different energy systems including cogeneration [43] and air to water heat pump [44] in ESP-r. Banister et al [12,13] developed a series of third order polynomial equations for compressor power draw, heat capture and net heat delivery of a water source HP. In this study the second order polynomial Equation 4is used to calculate the COP of the HP.…”

Section: Heat Pump System 308mentioning

confidence: 99%

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Techno-economic assessment of solar assisted heat pump system retrofit in the Canadian housing stock

2017

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The techno-economic feasibility of retrofitting existing Canadian houses with solar assisted heat pump (SAHP) is investigated. The SAHP architecture is adopted from previous studies conducted for the Canadian climate. The system utilizes two thermal storage tanks to store excess solar energy 10 for use later in the day. The control strategy is defined in order to prioritise the use of solar energy 11 for space and domestic hot water heating purposes. Due to economic and technical constraints a 12 series of eligibility criteria are introduced for a house to qualify for the retrofit. A model was built 13 in ESP-r and the retrofit was introduced into all eligible houses in the Canadian Hybrid Residential 14 End-Use Energy and GHG Emissions model. Simulations were conducted for an entire year to 15 estimate the annual energy savings, and GHG emission reductions. Results show that the SAHP system performance is strongly affected by climatic conditions, auxiliary energy sources and fuel mixture for electricity generation. Energy consumption and GHG emission of the Canadian housing stock can be reduced by about 20% if all eligible houses receive the SAHP system retrofit. Economic analysis indicates that the incentive measures will likely be necessary to promote the SAHP system in the Canadian residential market.

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Section: Acshmentioning

confidence: 99%

Section: System Configurationmentioning

confidence: 99%

Section: System Configurationmentioning

confidence: 99%

Section: System Configurationmentioning

confidence: 99%

Section: Heat Pump System 308mentioning

confidence: 99%

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Techno-economic assessment of solar assisted heat pump system retrofit in the Canadian housing stock

2017

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Analysis of the Potential of Solar‐Assisted Heat Pumps: Technical, Market, and Social Acceptance Aspects

2022

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Solar‐assisted heat pumps have the potential to increase the share of renewables in the energy systems for several cases, or to increase the flexibility of smart grids and integrated thermal‐electric grids. The development of such systems requires a comprehensive approach in which technical, market, and social acceptance are all tackled at the same time. Such a holistic approach is the main objective of the present review article. To do so, an investigation is performed by categorizing the integration approaches reported in the literature, exploiting the solar source either as a low‐temperature evaporator source or as supporting the condenser during heating operation. Furthermore, hybrid integration schematics and dual‐source approaches are discussed. Market and social aspects complete the analysis, with the aim of finally identifying the current status; the main drivers and challenges are also addressed. The reported results confirm that the exploitation of solar thermal energy can increase the achievable performance of heat pumps in a broad range of climates. A favorable regulatory/financial framework and informative campaigns for businesspersons and the wide public have been identified as the main solutions to maximize the deployment of the technology in the coming years.

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Experimental investigation of the heating performance of refrigerant injection heat pump with a single-cylinder inverter-driven rotary compressor

Sun

Zhu

Yin

et al. 2018

J Therm Anal Calorim

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Development and performance of a dual tank solar-assisted heat pump system

Cited by 59 publications

References 17 publications

Techno-economic assessment of solar assisted heat pump system retrofit in the Canadian housing stock

Techno-economic assessment of solar assisted heat pump system retrofit in the Canadian housing stock

Analysis of the Potential of Solar‐Assisted Heat Pumps: Technical, Market, and Social Acceptance Aspects

Experimental investigation of the heating performance of refrigerant injection heat pump with a single-cylinder inverter-driven rotary compressor

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