Method and apparatus for monitoring a calibrated condenser unit in a refrigerant-cycle system
First Claim
1. A monitoring system for monitoring a condenser unit in a refrigerant-cycle system, comprising:
- a first temperature sensor configured to measure input refrigerant temperature to a condenser unit;
a second temperature sensor configured to measure output refrigerant temperature from said condenser unit;
one or more ambient sensors configured to measure one or more ambient conditions;
an electrical sensor to sense power provided to sense electrical power provided to a compressor of said condenser unit; and
a processing system configured to calculate a performance criteria of said condenser using at least a portion of the data from said first temperature sensor, said second temperature sensor, said ambient sensors, said electrical sensor and one or more calibration values obtained during a calibration process wherein said processing system computes said performance criteria as a performance criteria compared to an expected performance, wherein said expected performance is based at least in part on an ambient temperature.
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Abstract
A real-time monitoring system that monitors various aspects of the operation of a refrigerant-cycle system is described. In one embodiment, the system includes a processor that measures power provided to the refrigerant-cycle system and that gathers data from one or more sensors and uses the sensor data to calculate a figure of merit related to the efficiency of the system. In one embodiment, the sensors include one or more of the following sensors: a suction line temperature sensor, a suction line pressure sensor, a suction line flow sensor, a hot gas line temperature sensor, a hot gas line pressure sensor, a hot gas line flow sensor, a liquid line temperature sensor, a liquid line pressure sensor, a liquid line flow sensor. In one embodiment, the sensors include one or more of an evaporator air temperature input sensor, an evaporator air temperature output sensor, an evaporator air flow sensor, an evaporator air humidity sensor, and a differential pressure sensor. In one embodiment, the sensors include one or more of a condenser air temperature input sensor, a condenser air temperature output sensor, and a condenser air flow sensor, an evaporator air humidity sensor. In one embodiment, the sensors include one or more of an ambient air sensor and an ambient humidity sensor.
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Citations
23 Claims
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1. A monitoring system for monitoring a condenser unit in a refrigerant-cycle system, comprising:
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a first temperature sensor configured to measure input refrigerant temperature to a condenser unit; a second temperature sensor configured to measure output refrigerant temperature from said condenser unit; one or more ambient sensors configured to measure one or more ambient conditions; an electrical sensor to sense power provided to sense electrical power provided to a compressor of said condenser unit; and a processing system configured to calculate a performance criteria of said condenser using at least a portion of the data from said first temperature sensor, said second temperature sensor, said ambient sensors, said electrical sensor and one or more calibration values obtained during a calibration process wherein said processing system computes said performance criteria as a performance criteria compared to an expected performance, wherein said expected performance is based at least in part on an ambient temperature. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23)
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Specification