Replacement of Circulation Pumps for Heating Groups in Buildings
Heating Technology
Measure Goal
The goal is to estimate the electricity savings triggered by replacing circulation pumps for heating groups in buildings with more efficient and smaller models.
Symbols, Terms and Units
| Symbol | Description | Unit |
|---|---|---|
E | annual electricity consumption | kWh/a |
ΔEeco | cumulative electricity savings | kWh |
Ė | electrical power consumption | kW |
H | delivery head | mWS |
Q | flow rate | m³/h |
ton | annual operating hours | h/a |
η | efficiency | — |
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 is calculated based on the electrical power consumption at different partial loads and the annual operating hours.
Examples and Scenarios
Replacement of one primary circuit circulation pump and two circulation pumps for heating groups in a residential building with a standard heating load of 250 kW
Inputs
3 Umwälzpumpen (2x Heizgruppe, 1x Heizkessel)
Downloads
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