Optimal Sizing of Solar-Assisted Heat Pump Systems for Residential Buildings

This paper analyzes the optimal sizing of a particular solution for renewable energy residential building integration. The solution combines a photovoltaic (PV) plant with a heat pump (HP). The idea is to develop a system that permits the maximum level of self-consumption of renewable energy generat...

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Main Authors: Alessandro Franco, Fabio Fantozzi
Format: Article
Language:English
Published: MDPI AG 2020-10-01
Series:Buildings
Subjects:
Online Access:https://www.mdpi.com/2075-5309/10/10/175
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author Alessandro Franco
Fabio Fantozzi
author_facet Alessandro Franco
Fabio Fantozzi
author_sort Alessandro Franco
collection DOAJ
description This paper analyzes the optimal sizing of a particular solution for renewable energy residential building integration. The solution combines a photovoltaic (PV) plant with a heat pump (HP). The idea is to develop a system that permits the maximum level of self-consumption of renewable energy generated by using a small-scale solar array installed on the same building. The problem is analyzed using data obtained from an experimental system installed in a building in Pisa, Italy. The residential house was equipped with a PV plant (about 3.7 kW of peak power), assisting a HP of similar electrical power (3.8 kW). The system was monitored for eight years of continuous operation. With reference to the data acquired from the long-term experimental analysis and considering a more general perspective, we discuss criteria and guidelines for the design of such a system. We focus on the possibility of exporting energy to the electrical grid, from the perspective of obtaining self-consumption schemes. Considering that one of the problems with small-scale PV plants is represented by the bidirectional energy flows from and to the grid, possible alternative solutions for the design are outlined, with both a size reduction in the plant and utilization of a storage system considered. Different design objectives are considered in the analysis.
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spelling doaj.art-fa0692202a534367bbe17281f623d5582023-11-20T16:02:58ZengMDPI AGBuildings2075-53092020-10-01101017510.3390/buildings10100175Optimal Sizing of Solar-Assisted Heat Pump Systems for Residential BuildingsAlessandro Franco0Fabio Fantozzi1Department of Energy, Systems, Territory and Constructions Engineering (DESTEC), University of Pisa, Largo Lucio Lazzarino, 56122 Pisa, ItalyDepartment of Energy, Systems, Territory and Constructions Engineering (DESTEC), University of Pisa, Largo Lucio Lazzarino, 56122 Pisa, ItalyThis paper analyzes the optimal sizing of a particular solution for renewable energy residential building integration. The solution combines a photovoltaic (PV) plant with a heat pump (HP). The idea is to develop a system that permits the maximum level of self-consumption of renewable energy generated by using a small-scale solar array installed on the same building. The problem is analyzed using data obtained from an experimental system installed in a building in Pisa, Italy. The residential house was equipped with a PV plant (about 3.7 kW of peak power), assisting a HP of similar electrical power (3.8 kW). The system was monitored for eight years of continuous operation. With reference to the data acquired from the long-term experimental analysis and considering a more general perspective, we discuss criteria and guidelines for the design of such a system. We focus on the possibility of exporting energy to the electrical grid, from the perspective of obtaining self-consumption schemes. Considering that one of the problems with small-scale PV plants is represented by the bidirectional energy flows from and to the grid, possible alternative solutions for the design are outlined, with both a size reduction in the plant and utilization of a storage system considered. Different design objectives are considered in the analysis.https://www.mdpi.com/2075-5309/10/10/175renewable energy systemssmart gridphotovoltaic plantsground heat pumpsexperimental analysisoptimization
spellingShingle Alessandro Franco
Fabio Fantozzi
Optimal Sizing of Solar-Assisted Heat Pump Systems for Residential Buildings
Buildings
renewable energy systems
smart grid
photovoltaic plants
ground heat pumps
experimental analysis
optimization
title Optimal Sizing of Solar-Assisted Heat Pump Systems for Residential Buildings
title_full Optimal Sizing of Solar-Assisted Heat Pump Systems for Residential Buildings
title_fullStr Optimal Sizing of Solar-Assisted Heat Pump Systems for Residential Buildings
title_full_unstemmed Optimal Sizing of Solar-Assisted Heat Pump Systems for Residential Buildings
title_short Optimal Sizing of Solar-Assisted Heat Pump Systems for Residential Buildings
title_sort optimal sizing of solar assisted heat pump systems for residential buildings
topic renewable energy systems
smart grid
photovoltaic plants
ground heat pumps
experimental analysis
optimization
url https://www.mdpi.com/2075-5309/10/10/175
work_keys_str_mv AT alessandrofranco optimalsizingofsolarassistedheatpumpsystemsforresidentialbuildings
AT fabiofantozzi optimalsizingofsolarassistedheatpumpsystemsforresidentialbuildings