Abstract: A refrigeration cycle apparatus includes an air conditioner, sensors, and processing circuitry. The processing circuitry determines a predicted opening of the electronic expansion valve of the air conditioner based on outputs of the sensors and an operation frequency of the compressor, assuming normal operation of the air conditioner. The processing circuitry calculates a prediction error by subtracting a measured opening of the electronic expansion valve from the predicted opening. The processing circuitry calculates multiple prediction errors in advance, calculates an offset value as an average of the multiple prediction error, and outputs a corrected prediction error by subtracting the offset value from the current prediction error. The processing circuitry detects a refrigerant leak of the air conditioner based on the corrected prediction error.

Abstract: According to one embodiment, a generation device acquires a plurality of images of a temperature distribution of a conveyance object. The images are generated by a thermal camera. The generation device sets a plurality of measurement areas in each of the images along a conveyance direction of the conveyance object. The generation device generates time-series data of temperature change over time for each of the plurality of measurement areas. The generation device generates a temperature profile of temperature change over time of the conveyance object by using a portion of temperatures extracted from the time-series data of the plurality of measurement areas.