The energy performances of a smart air-conditioning plant installed at the University of Calabria, constituted by heat pumps and a storage tank, are introduced. The same plant is configured as an alternative electric storage system because connected, by means of an appropriate internal electric micro-grid, to a 4kWp PV generator. The electric microgrid manages the electrical fluxes in order to increase the self-consumed rate. The storage tank covers the mismatching between solar energy availability and heating requests, by accumulating the PV electricity surpluses under the form of hot/cold water. Moreover, a long-term storage system is represented by the conditioned building: A radiant system, in fact, is exploited to activate the building thermal mass. A suitable control strategy was developed to activate overheating or undercooling strategies in presence of a saturated tank, in order to avoid the transfer of PV electricity to the external grid, increasing the system profitability. The conceived system coordinates the operation of the air-conditioning plant with other electric loads, favoring the building-plant system to be less dependent from the external grid.

PV Driven Heat Pumps for the Electric Demand-Side Management: Experimental Results of a Demonstrative Plant

Arcuri, Natale;Bruno, Roberto;Carpino, Cristina
2018

Abstract

The energy performances of a smart air-conditioning plant installed at the University of Calabria, constituted by heat pumps and a storage tank, are introduced. The same plant is configured as an alternative electric storage system because connected, by means of an appropriate internal electric micro-grid, to a 4kWp PV generator. The electric microgrid manages the electrical fluxes in order to increase the self-consumed rate. The storage tank covers the mismatching between solar energy availability and heating requests, by accumulating the PV electricity surpluses under the form of hot/cold water. Moreover, a long-term storage system is represented by the conditioned building: A radiant system, in fact, is exploited to activate the building thermal mass. A suitable control strategy was developed to activate overheating or undercooling strategies in presence of a saturated tank, in order to avoid the transfer of PV electricity to the external grid, increasing the system profitability. The conceived system coordinates the operation of the air-conditioning plant with other electric loads, favoring the building-plant system to be less dependent from the external grid.
9781538651858
Building thermal storage; Electric DSM; Smart control; Thermal Storage; Energy Engineering and Power Technology; Renewable Energy, Sustainability and the Environment; Electrical and Electronic Engineering; Industrial and Manufacturing Engineering; Environmental Engineering; Hardware and Architecture
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/20.500.11770/289096
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