A BIN OF GRAIN IS TO BE CHILLED WITH AIR AT A DRY BULB TEMPERATURE OF 5DEGREE CELSIUS AT AN AIR FLOW RATE OF 30METRECUBE PER MINUTE. IF THE AMBIEMT AIR CONDITIONS ARE 35DEGREE CELSIUS DRY BULB AND 24DEGREE CELSIUS WET BULB. DETERMINE THE AMOUNT OF HEAT AND MOISTURE WHICH HAS TO BE REMOVED PER HOUR FROM AIR BY REFRIGERATING USE.