Replacement of Decentralized Electric Heating by Air Conditioning Units in Residential Buildings
Heating Technology
Measure Goal
The goal is to estimate the electricity savings triggered by the renovation of a fixed resistance heating (electric heating) in residential buildings by replacing it with fixed reversible split or multi-split air conditioning units.
Symbols, Terms and Units
| Symbol | Description | Unit |
|---|---|---|
E | annual electricity consumption | kWh/a |
ΔEeco | cumulative electricity savings | kWh |
A | energy reference area | m² |
Q | specific heat demand | kWh/m² |
η | utilization rate | — |
Calculation Formulas
Cumulative Electricity Savings
The cumulative electricity savings result from the difference between the electricity consumption of the old and new state, multiplied by the reduction factor and the standard effective duration.
Annual Electricity Consumption
The annual electricity consumption depends on the annual heat demand of the apartments in the residential building and the utilization rate of the heat generator.
Examples and Scenarios
Replacement of a decentralized electric heating system in a two-family house with a 6-room and a 2-room apartment
Inputs
Erstwohnung 5+ Zimmer (GEAK C), Zweitwohnung 2 Zimmer (GEAK C)
Replacement of a decentralized electric heating system in a single-family house (4-room apartment)
Inputs
Erstwohnung 4 Zimmer (GEAK C)
Downloads
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