High grade heat comes from ‘DE-superheating’ the refrigerant
between the compressor and the condenser. This heat can be between 60ºC and
90ºC. A heat exchanger (the DE-superheater) is installed, with the refrigerant
on one side and the fluid to be heated on the other. Not only does this DE-superheat the refrigerant, it reduces the cooling water or air needed by the
condenser.
Heat Recovery is a very useful energy saving technique where the
heat that is removed by the refrigeration systems or other processes can be
utilized for various applications as opposed to this heat just being wasted, as
is normally the case. Considerable energy savings can be achieved by re-using
heat from your refrigeration plant or any other process present on site.
Depending on the specific temperature requirements of other
cooling and heating loads throughout your facility, recaptured heat can be
re-used directly, boosted through a heat pump to a higher temperature, used in
an absorption chiller to satisfy another cooling requirement or stored for
later use.
