The studied CO2 system with heat recovery from the desuperheater
has slightly lower energy usage in an average
size supermarket when compared to conventional R404A
refrigeration system with a separate heat pump for heating
needs.
CO2 trans-critical systems for supermarkets refrigeration
are efficient solutions in cold climates. Recovering heating
energy from the de-superheater following the proper control
strategy makes the solutions also efficient for heat recovery,
which is especially important in cold climates and makes the
CO2 systems more favorable