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Initial situation
Positive cold : R404a system – Recoverable Power = 19 kW (desuperheating)
Negative cold : R404a unit – Recoverable Power = 10 kW (desuperheating)
Proposal / study
Heat recovery package for equipment of the 2 refrigeration systems
1 000L TiT tank
20 kW destratification air heater located in the retail area
Forecast return on investment at time of study : 8years
Measurements taken
Measurement dates : 15/10/16 to 26/02/18
Energy recovered on positive system : 89 005 kWh
Energy recovered on negative system : 37 641 kWh
Total energy recovered : 126 646 kWh/year
Total annual savings : approx. €5,952/year, i.e., equiv. to 26.60 tonnes of CO2/year
Actual return on investment : 4years