Heat storage in building mass and shifting potential of electricity demand in buildings with heat pumps

This study evaluates the potential of typical building structures to store heat and supply flexibility for electricity consumption by heat pumps. The theoretical potential of a hydronic underfloor heating to store heat and supply flexibility for electricity consumption by heat pumps is 0.16 kWh/m2 a...

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Bibliographic Details
Published in:Journal of physics. Conference series 2019-11, Vol.1343 (1), p.12072
Main Authors: Dott, Ralf, Afjei, Thomas
Format: Article
Language:English
Subjects:
Electric power demand
Electricity consumption
Flexibility
Heat pumps
Heat storage
Heating
Insulation
Physics
Thermal comfort
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Summary:This study evaluates the potential of typical building structures to store heat and supply flexibility for electricity consumption by heat pumps. The theoretical potential of a hydronic underfloor heating to store heat and supply flexibility for electricity consumption by heat pumps is 0.16 kWh/m2 at 4 K temperature swing. In real operation with a realistic controller, about 50% of this potential can be activated even during daytime with solar gains. For all cases the overall heat demand and the thermal comfort stay equal. A simple but universal rule could be: Independent from the insulation quality of the building, an intermittent increased heating control could merge two heating cycles of the demand-controlled mode to one, where the following waiting time increases by factor 1.5 to 2.
ISSN:1742-6588
1742-6596
DOI:10.1088/1742-6596/1343/1/012072