Known systems for recovering heat from refrigeration plant make no distinction between the different kinds of {TAIL ~ heat} being recovered and use {HEAD ~ both low and high grade heat} together to raise the temperature of say a water tank 
Known systems for recovering heat from refrigeration plant make no distinction between the different kinds of { TAIL ~ heat } being recovered and use { HEAD ~ both low and high grade heat } together to raise the temperature of say a water tank
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH