This work summarizes the performance of a Solar Assisted Heat Pump integrating Photovoltaic thermal (PV/T) modules. This configuration reduces the disadvantage of low temperature heat recovery typical of PV/T modules as the fluid temperature is used to drive the heat pump evaporator instead of an end-user and, consequently, can be close to the ambient one. A detailed model featuring real components is developed in MATLAB ® to correctly predict the SAHP performance as function of the design parameters (number of PV/T modules) and ambient conditions (solar irradiance and ambient temperature). In addition, an optimization tool was combined with the model to maximize the COP (Coefficient of Performance) by varying the water flow rate circulating in the PV/T panels. Results outline the benefits of this concept with respect to conventional air/water heat pumps in particular when the ambient temperature is below zero as the frost formation issue is not present. COP reaches high values, between 2.5 and 4.9 in the case with 12 PV/T panels and between 2.2 and 6.2 with 24. Advantages in terms of electricity production are outlined as well, with an increasing of 8-9% of the power produced.

Modeling of solar assisted heat pumps combined with photovoltaic thermal modules

Simonetti, Riccardo;Molinaroli, Luca;Manzolini, Giampaolo
2017-01-01

Abstract

This work summarizes the performance of a Solar Assisted Heat Pump integrating Photovoltaic thermal (PV/T) modules. This configuration reduces the disadvantage of low temperature heat recovery typical of PV/T modules as the fluid temperature is used to drive the heat pump evaporator instead of an end-user and, consequently, can be close to the ambient one. A detailed model featuring real components is developed in MATLAB ® to correctly predict the SAHP performance as function of the design parameters (number of PV/T modules) and ambient conditions (solar irradiance and ambient temperature). In addition, an optimization tool was combined with the model to maximize the COP (Coefficient of Performance) by varying the water flow rate circulating in the PV/T panels. Results outline the benefits of this concept with respect to conventional air/water heat pumps in particular when the ambient temperature is below zero as the frost formation issue is not present. COP reaches high values, between 2.5 and 4.9 in the case with 12 PV/T panels and between 2.2 and 6.2 with 24. Advantages in terms of electricity production are outlined as well, with an increasing of 8-9% of the power produced.
2017
Proceedings of the ISES Solar World Congress 2017
978-3-9814659-7-6
File in questo prodotto:
File Dimensione Formato  
Modeling of solar assisted heat pumps combined with photovoltaic thermal modules.pdf

accesso aperto

Descrizione: Articolo principale
: Publisher’s version
Dimensione 222.59 kB
Formato Adobe PDF
222.59 kB Adobe PDF Visualizza/Apri

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11311/1057125
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 1
  • ???jsp.display-item.citation.isi??? ND
social impact