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Initial situation
Consumption : 12 000L of domestic hot water per day
Positive cold : R449a system – Cooling capacity = 177 000W & Heat rejection = 350 000W (at -10/+48°C)
Proposal / study
Equipment for positive cold unit : 2x Boostherm 100kW
Installation of 2x 3 000L tanks in parallel, linked to the production of domectic hot water
Forecast return on investment at time of study : 3,1years
Measurements taken
Average energy recovered per day : 600kWh/day
Annual energy savings : 156 000kWh/year
Total annual savings : approx. €5 772/year, i.e., equiv. to 32,76 tonnes of CO2/year