Abstract: A method of and a system for drying a material in a drying chamber (100), the method comprising the steps of; supplying air to an air-drying system (114, 214, 314) which air-drying system comprises; an air inlet (116), a first heat exchanger (204) having a first warm side (204a) and a first cold side (204b); a heat pump (318) comprising an evaporator (206), a condenser (208) and a compressor (316) arranged to provide a first heat transfer from the evaporator (206) to the condenser (208); an air outlet (118) arranged to supply the air to the drying chamber (100); a second heat exchanger (210) having a second warm side (210a) and a second cold side (210b), the second cold side (210b) being connected a heat transfer medium capable of absorbing heat from the second warm side (210a) through a second heat transfer, the second heat exchanger (210) being arranged downstream of the first cold (204b) side and upstream of the air outlet (118); and an air flow device (202) arranged to control the air flow rate from th

Abstract: A hybrid power and heat generating device (100) comprising: a photovoltaic solar power collector (102) configured to collect solar power from solar radiation received on an active side (103) of the photovoltaic solar power collector; and a heat exchanging unit (104) configured to cool the photovoltaic solar power collector, which heat exchanging unit includes a cooling plate (106;404;504704) arranged to transfer heat from the photovoltaic solar power collector (102) to a cooling medium. The heat exchanging unit (104) is adapted to transport the cooling medium away from the cooling plate (106;404;504;704) for heat extraction from the cooling medium.