Field study of a novel solar-assisted dual-source multifunctional heat pump

Besagni, Giorgio; Croci, Lorenzo; Nesa, Riccardo; Molinaroli, Luca

doi:10.1016/j.renene.2018.08.076

Cited by 68 publications

(31 citation statements)

References 36 publications

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“…The water tank acts as a heat source for the heat pump [18,21]. Besgani et al [22] conducted an experimental study on a dualsource solar-assisted IEPVT/HP system in Milan, Italy, on a detached prefabricated building.…”

Section: Introductionmentioning

confidence: 99%

“…The heat pump also used an air-based evaporator to use air as another heat source. They [22] found that the "water-source" operation of the heat pump outperformed the "air-source" operation by 34%, and that the water-source heat pump did not require any defrost cycling. It was also observed that the electricity production of the PV and PVT panels were similar [22].…”

Section: Introductionmentioning

confidence: 99%

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Performance assessment of a hybrid photovoltaic-thermal and heat pump system for solar heating and electricity

et al. 2020

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This work investigates a solar combined heat and power systems based on hybrid photovoltaic-thermal heat pump systems for the simultaneous provision of space heating and electricity to residential homes. The analysed system connects a photovoltaic-thermal (PVT) panel, through a PVT water tank, to a heat pump. The study is based on quasi-steady state heat transfer and thermodynamic analysis that takes incremental time steps to solve for the fluids temperature changes from the heat pump and the solar PVT panels. The effects of solar irradiance, size of the water tank and the water flow rate in the PVT pipes (laminar and turbulent) on the performance of the system are analysed. Particular focus is made towards the efficiency (electrical and thermal) of the PVT and the COP of the heat pump. Results show that the minimum COP of the heat pump is 4.2, showing the high performance of the proposed hybrid system. Increasing the water flowrate through the PVT panel from 3L/min (laminar) to 17L/min (turbulent) increases the PVT's total efficiency (electrical + thermal) from 61% to 64.5%. Increasing the size of the PVT water tank from 1L to 100L, increases the total efficiency of the PVT panel by 6.5%.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Performance assessment of a hybrid photovoltaic-thermal and heat pump system for solar heating and electricity

et al. 2020

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“…Dentro de su investigación, Besagni et al [26] utilizaron una bomba de calor reversible con un tanque de almacenamiento de 0.186 m 3 y con una carga de 6.9 kg de refrigerante R410A. Se obtuvo una capacidad de calefacción nominal de 6.8 kW y COP promedio de 3.47 para obtener una temperatura de salida del agua de 35 °C.…”

Section: Revisión Del Estado Del Arteunclassified

Análisis del rendimiento termodinámico de una bomba de calor asistida por energía solar utilizando un condensador con recirculación

Quitiaquez¹,

Simbaña²,

Caizatoa³

et al. 2020

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La presente investigación estudia una bomba de calor de expansión directa asistida por energía solar con un sistema de recirculación de agua. Los intercambiadores de calor utilizados fueron un colector/evaporador de cobre de 0.75 m2 y un condensador en forma de serpentín construido en tubería de cobre de 2.49 m de longitud y 8 espiras, inmerso en un tanque con 5 litros de agua. Para la recirculación del agua, se utilizó una bomba centrífuga de 20 L/min a 110 V. El compresor instalado es de velocidad variable a 12-24 V DC que utiliza R600a como fluido de trabajo. El dispositivo de expansión utilizado fue una válvula electrónica. Las pruebas experimentales se desarrollaron para una configuración con recirculación y sin recirculación de agua, considerando condiciones climáticas similares. De esta manera, se puede establecer cuál es la configuración que brinda un mayor rendimiento en el sistema. Para la obtención de datos de radiación solar, velocidad del viento y temperatura ambiente se empleó una estación meteorológica WS-1201. Este sistema proporcionó agua caliente sanitaria, a 45 °C en un tiempo entre 40 a 50 minutos dependiendo de las condiciones climáticas. El COP máximo del sistema con recirculación fue 9.83 un 8.04 % mayor que el sistema sin recirculación. El tiempo de calentamiento tardó 10 minutos menos para el sistema con recirculación, 16.67 % menos que al utilizar el sistema sin recirculación.

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“…The solar‐assisted air source heat pump system with energy storage (SASHPS‐ES) can provide feasible, environment‐friendly and sustainable alternatives for building heating and cooling and has drawn increasing attention worldwide . Li et al and Liu et al explored a high‐throughput screening to optimize the performance of a solar water heater system.…”

Section: Introductionmentioning

confidence: 99%

“…[6][7][8] The solar-assisted air source heat pump system with energy storage (SASHPS-ES) can provide feasible, environment-friendly and sustainable alternatives for building heating and cooling and has drawn increasing attention worldwide. [9][10][11][12][13] Li et al 14 and Liu et al 15 explored a high-throughput screening to optimize the performance of a solar water heater system. Liu et al 16 conducted an experimental study with a solar air composite heat source heat pump system; the results showed that the composite heat pump had obviously better cooling capacity and performance than an independent ASHP.…”

Section: Introductionmentioning

confidence: 99%

Optimization study on a solar‐assisted air source heat pump system with energy storage based on the economics method

et al. 2019

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Currently, hybrid renewable energy systems with thermal energy storage have various advantages and are widely used. This paper investigated the performance of a solar‐assisted air source heat pump system with energy storage (SASHPS‐ES) in Beijing, China, and proposed an optimal operation mode based on economic evaluation. The results indicate that with the optimal heat storage ratio of 50%, the rated capacity of the air source heat pump (ASHP) of the SASHPS‐ES system can be reduced by 16.7%, decreasing its annual total cost by 26.5% under a peak‐valley electricity price policy. The price of 620¥/m2 is critical for the solar collectors. The economics of SASHPS‐ES is better than that of an air source heat pump system with energy storage (ASHPS‐ES) when the price of the selected solar collector units is less than this critical price (without subsidies from the government). In the current local market, the promotion of SASHPS‐ES systems and other solar energy applications requires government subsidies for a period of time. The results can guide the utilization and popularity of SASHPS‐ES in China.

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Field study of a novel solar-assisted dual-source multifunctional heat pump

Cited by 68 publications

References 36 publications

Performance assessment of a hybrid photovoltaic-thermal and heat pump system for solar heating and electricity

Performance assessment of a hybrid photovoltaic-thermal and heat pump system for solar heating and electricity

Análisis del rendimiento termodinámico de una bomba de calor asistida por energía solar utilizando un condensador con recirculación

Optimization study on a solar‐assisted air source heat pump system with energy storage based on the economics method

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