Performance of a demonstration solar PVT assisted heat pump system with cold buffer storage and domestic hot water storage tanks

Dannemand, Mark; Perers, Bengt; Furbo, Simon

doi:10.1016/j.enbuild.2018.12.042

Cited by 74 publications

(26 citation statements)

References 31 publications

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“…They [22] concluded that their IEPVT/HP system has an average COP of 3 [22]. In another experimental study in Lyngby, Denmark, Dannemand et al [23] analysed the performance of a solar IEPVT/HP system for nine months. They [23] demonstrated that their system can operate and absorb solar energy at solar radiation intensities greater than 50W/m 2 and act as an air source heat absorber at solar radiation intensities less than 50W/m 2 [23].…”

Section: Introductionmentioning

confidence: 99%

“…In another experimental study in Lyngby, Denmark, Dannemand et al [23] analysed the performance of a solar IEPVT/HP system for nine months. They [23] demonstrated that their system can operate and absorb solar energy at solar radiation intensities greater than 50W/m 2 and act as an air source heat absorber at solar radiation intensities less than 50W/m 2 [23]. Though the system was proved to work, the researchers concluded that optimisation of the system is important [23].…”

Section: Introductionmentioning

confidence: 99%

“…In literature, the majority of research studied the medium and long term (e.g. months) operation of different configurations of IEPVT/HP systems [22,24,23,25]. Additionally, the influence of the system pertinent parameters (variation in the solar irradiation, PVT water flow rate and storage tank) on the response of the system for long-term operation has not been well studied.…”

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%

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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“…In the literature, we found similar partial studies on this research topic. Dennemand et al [ 5 ] conducted an experimental study on a photovoltaic/thermal (PV/T)-assisted brine-to-water HP for sanitary hot water (SHW) production. The results of the 9-month measurements showed that the non-insulated PV/T module heats the hot water tank to ambient temperature even during the time without direct solar radiation.…”

Section: Introductionmentioning

confidence: 99%

Performance and Exergy Analyses of a Solar Assisted Heat Pump with Seasonal Heat Storage and Grey Water Heat Recovery Unit

Poredoš

Vidrih

Poredoš³

2020

Entropy

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The main research objective of this paper was to compare exergy performance of three different heat pump (HP)-based systems and one natural gas (NG)-based system for the production of heating and cooling energy in a single-house dwelling. The study considered systems based on: 1. A NG and auxiliary cooling unit; 2. Solely HP, 3. HP with additional seasonal heat storage (SHS) and a solar thermal collector (STC); 4. HP with SHS, a STC and a grey water (GW) recovery unit. The assessment of exergy efficiencies for each case was based on the transient systems simulation program TRNSYS, which was used for the simulation of energy use for space heating and cooling of the building, sanitary hot water production, and the thermal response of the seasonal heat storage and solar thermal system. The results show that an enormous waste of exergy is observed by the system based on an NG boiler (with annual overall exergy efficiency of 0.11) in comparison to the most efficient systems, based on HP water–water with a seasonal heat storage and solar thermal collector with the efficiency of 0.47. The same system with an added GW unit exhibits lower water temperatures, resulting in the exergy efficiency of 0.43. The other three systems, based on air–, water–, and ground–water HPs, show significantly lower annual source water temperatures (10.9, 11.0, 11.0, respectively) compared to systems with SHS and SHS + GW, with temperatures of 28.8 and 19.3 K, respectively.

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“…The thermal component of the PVT collector has the potential to cool the PV component leading to higher electricity production while producing heat at the same time (Aste et al, 2014). This leads to a better utilization of the installation area, potentially reducing at the same time the use of materials, as less materials are needed to manufacture PVT collectors compared to the material use for separate PV-and thermal-panels (Dannemand et al, 2019). PVT technology has been investigated and considered favorable for domestic applications (e.g.…”

Section: Introductionmentioning

confidence: 99%

Experimental Investigation and Characterization of Façade Integrated PVT Collectors With and Without Insulation

Dannemand¹,

Sifnaios²,

Jensen³

et al. 2019

Proceedings of the ISES Solar World Congress 2019

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The performance of two unglazed aluminum PVT collectors integrated into a concrete wall was investigated in a laboratory test facility. One PVT collector was installed in direct contact with the concrete wall and the other was installed with 10 mm of Styrofoam between the PVT collector and the wall. It was found that the temperatures of the walls behind the PVT collectors had big impacts on the thermal performance of the collectors. For this reason, an extended version of the traditional QDT formula was suggested for façade integrated collectors, where the effect of the temperature of the wall was also taken into account.

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Performance of a demonstration solar PVT assisted heat pump system with cold buffer storage and domestic hot water storage tanks

Cited by 74 publications

References 31 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

Performance and Exergy Analyses of a Solar Assisted Heat Pump with Seasonal Heat Storage and Grey Water Heat Recovery Unit

Experimental Investigation and Characterization of Façade Integrated PVT Collectors With and Without Insulation

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