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Energies 2016, 9(9), 728; doi:10.3390/en9090728

Demonstration of the Performance of an Air-Type Photovoltaic Thermal (PVT) System Coupled with a Heat-Recovery Ventilator

1
Green Energy Technology Research Center, Kongju National University, Gongju 31080, Korea
2
Graduate School of Energy Systems Engineering, Kongju National University, Gongju 31080, Korea
3
Department of Architecture Engineering, Kongju National University, Gongju 31080, Korea
*
Author to whom correspondence should be addressed.
Academic Editor: George Kosmadakis
Received: 19 June 2016 / Revised: 25 August 2016 / Accepted: 31 August 2016 / Published: 9 September 2016
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Abstract

A heat-recovery ventilator (HRV) effectively conducts ventilation by recovering waste heat from indoors to outdoors during heating periods. However, dew condensation associated with the HRV system may arise due to the difference between the indoor temperature and the very low outdoor temperature in winter, and this can decrease the heat exchange efficiency. These problems can be solved by the pre-heating of the incoming air, but additional energy is required when pursuing such a strategy. On the other hand, an air-type photovoltaic thermal (PVT) system produces electricity and thermal energy simultaneously using air as the heat transfer medium. Moreover, the heated air from the air-type PVT system can be connected to the HRV to pre-heat the supply air instead of taking in the cold outdoor air. Thus, the ventilation efficiency can be improved and the problems arising during the heating period can be resolved. Consequentially, the heating energy required in a building can be reduced, with additional electricity acquired as well. In this paper, the performance of an air-type PVT system coupled with an HRV is assessed. To do this, air-type PVT collectors operating at 1 kWp were installed in an experimental house and coupled to an HRV system. Thermal performance and heating energy required during the winter season were analyzed experimentally. Furthermore, the electrical performances of the air-type PVT system with and without ventilation at the back side of the PV during the summer season were analyzed. View Full-Text
Keywords: air-type photovoltaic thermal; heat recovery ventilator; thermal and electrical efficiency; heating energy demand; demonstration performance air-type photovoltaic thermal; heat recovery ventilator; thermal and electrical efficiency; heating energy demand; demonstration performance
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Kim, J.-H.; Ahn, J.-G.; Kim, J.-T. Demonstration of the Performance of an Air-Type Photovoltaic Thermal (PVT) System Coupled with a Heat-Recovery Ventilator. Energies 2016, 9, 728.

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