A research laboratory has a total volume of 1000 m³. An air conditioning system supplies the laboratory with air at 22 C with 70% relative humidity. The air in the laboratory should be changed completely twice an hour. Outside temperature is 10 C. Calculate the volume of air required to bring the temperature of the outside air from 10 C to 22 C. Also, find the heat required for the evaporation of water and humidification of the air in the laboratory.