KA-02a
Version 2.0
Replacement
Replacement of Cooling Products up to 250 kW
Refrigeration Technology
Measure Goal
The goal is to standardize the calculation of electricity savings that are triggered by replacing inefficient cooling products up to 250 kW with energy-efficient units.
Symbols, Terms and Units
| Symbol | Description | Unit |
|---|---|---|
ΔE | annual electricity savings | kWh/a |
ΔEeco | cumulative electricity savings | kWh |
PK | cooling capacity | kW |
SEER | Seasonal Energy Efficiency Ratio | — |
hVL | annual full load hours | h/a |
Ns | standard effective duration | a |
Calculation Formulas
Annual Electricity Savings
ΔE = PK × hVL × (1/SEERvor - 1/SEERnach)
The annual electricity savings result from the cooling capacity, full load hours and the difference in seasonal efficiency before and after replacement.
Cumulative Electricity Savings
ΔEeco = ΔE × Ns
The cumulative electricity savings result from the annual savings multiplied by the standard effective duration.
Examples and Scenarios
Scenario A
Savings
Replacement of a refrigeration system with 150 kW cooling capacity
180'000
kWh
Inputs
Kälteleistung: 150 kW, SEER vorher: 2.8, SEER nachher: 4.2, Volllaststunden: 3'000 h/a
Downloads
Documentation (PDF)
Complete technical documentation including calculation basis
Excel Calculator (XLSX)
Interactive calculation tool for savings
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