Exhaust air heat pumps are often installed in newly built detached houses. An exhaust air heat...
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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. 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.
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Solution a The heat absorbed from the air per second can be calculated using the following formula Q ... View the full answer
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