(B C) ;ANORDNING FOER OEVERFOERING AV VAERME FRAON FRAONLUFT FRAON ETT UTRYMME TILL TILLUFT TILL NAEMNDA UTRYMME

摘要

There is provided a heat exchanger system for transfer of heat in the warm exhaust air from a mine to the cold input air flow to the mine. In the system there is provided a heat supply means, which supplies heat, recovered from the exhaust air, to the input air heat exchanger when an exhaust air heat exchanger is disconnected for defrosting.