an air conditioning system is to take place in an outdoor air at 10 degrees celcius and 30% 0f relative humidity at a steady rate of 45 m^3/min and to condition it to 25 degrees celcius and 60% relative humidity . the outdoor air is first heated to 22 degrees celcius in the heating section and then humidified by the injection of hot steam in the humidifying section. assuming the entire process takes place at a pressure of 100 kPa, determine the rate of heat supply and the mass flow rate of the steam required