KA-04c
Version 2.0
Operational Optimization
Adjustment of Superheat
Refrigeration Technology
Measure Goal
The goal is to standardize the calculation of electricity savings that are triggered by adjusting the superheat to optimize the evaporation temperature.
Symbols, Terms and Units
| Symbol | Description | Unit |
|---|---|---|
ΔE | annual electricity savings | kWh/a |
ΔEeco | cumulative electricity savings | kWh |
Pel | electrical power consumption | kW |
ΔTV | evaporation temperature difference | K |
hB | annual operating hours | h/a |
Ns | standard effective duration | a |
Calculation Formulas
Annual Electricity Savings
ΔE = Pel × hB × 0.04 × ΔTV
The annual electricity savings result from the electrical power consumption, operating hours and temperature difference (approx. 4% 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
Optimization of superheat in a refrigeration system with 45 kW
18'000
kWh
Inputs
Elektrische Leistung: 45 kW, Betriebsstunden: 5'000 h/a, Temperaturerhöhung: 2 K
Downloads
Documentation (PDF)
Complete technical documentation including calculation basis
Excel Calculator (XLSX)
Interactive calculation tool for savings
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