KA-03c
Version 2.0
Retrofit
Reduction of Condenser Air Short-Circuits
Refrigeration Technology
Measure Goal
The goal is to standardize the calculation of electricity savings that are triggered by reducing condenser air short circuits to lower the condensation temperature.
Symbols, Terms and Units
| Symbol | Description | Unit |
|---|---|---|
ΔE | annual electricity savings | kWh/a |
ΔEeco | cumulative electricity savings | kWh |
Pel | electrical power consumption | kW |
ΔTK | condensation temperature difference | K |
hB | annual operating hours | h/a |
Ns | standard effective duration | a |
Calculation Formulas
Annual Electricity Savings
ΔE = Pel × hB × 0.03 × ΔTK
The annual electricity savings result from the electrical power consumption, operating hours and temperature difference (approx. 3% savings per K).
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
Elimination of air short circuits in a condenser with 60 kW
27'000
kWh
Inputs
Elektrische Leistung: 60 kW, Betriebsstunden: 5'000 h/a, Temperaturreduktion: 3 K
Downloads
Documentation (PDF)
Complete technical documentation including calculation basis
Excel Calculator (XLSX)
Interactive calculation tool for savings
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