Patent ID: 8615327

Claim:
A humidity estimation device connected with an air-conditioner, the device comprising: a charge airflow rate estimation unit that acquires operation control information of a charge fan of the air-conditioner and calculates an estimated charge airflow rate of the air-conditioner based on the operation control information of the charge fan and a preset fan differential pressure; a charge air absolute humidity estimation unit that acquires a charge air temperature value of the air-conditioner and calculates an estimated charge air absolute humidity of the air-conditioner based on the charge air temperature value and a preset charge air relative humidity; an indoor generated vapor amount estimation unit that acquires an indoor temperature value of a room that is an object controlled by the air-conditioner and calculates an estimated indoor generated vapor amount based on the indoor temperature value, a number of persons in the room and activity index values of the persons that are input; and an indoor absolute humidity estimation unit that calculates an estimated absolute humidity in the room based on the estimated charge airflow rate calculated by the charge airflow rate estimation unit, the estimated charge air absolute humidity calculated by the charge air absolute humidity estimation unit and the estimated indoor generated vapor amount calculated by the indoor generated vapor amount estimation unit.