Exhaust air heat pumps are often installed in newly built detached houses. An exhaust air heat pump transfers the heat energy from the ventilation system's exhaust air to I heat e.g. the shower water. According to the datasheet, in a certain source air heat pump, the air temperature drops from 25 \deg C to 6 \deg C at an airflow of 160 m3/h the heat pump's electrical output is stated as 350 W. The shower water to be heated with the heat pump has a temperature of 12 \deg C but must reach 40 \deg C before it is used. a) Calculate how much heat is absorbed from the air per second b) Use task a to estimate the heating factor of the heat pump. c) Use task b to calculate the mass of water that the heat pump can heat in one day.