Open AccessHeat storage in building mass and shifting potential of electricity demand in buildings with heat pumps
Author(s) -
Ralf Dott,
Thomas Afjei
Publication year - 2019
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1343/1/012072
Subject(s) - thermal energy storage , electricity , heat pump , thermal mass , renewable heat , environmental science , merge (version control) , storage heater , flexibility (engineering) , hybrid heat , process engineering , automotive engineering , engineering , thermal , mechanical engineering , computer science , thermodynamics , electrical engineering , economics , heat exchanger , physics , management , information retrieval
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/m 2 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.