Method of anticipating potential HVAC failure
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United States of America Patent
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-
Mar 17, 1998
Grant Date -
N/A
app pub date -
Dec 9, 1994
filing date -
Dec 9, 1994
priority date (Note) -
In Force
status (Latency Note)
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Abstract
To anticipate potential failure of a temperature modification device (e.g., heating, ventilating and air conditioning equipment used in a commercial building), an efficiency value representing the ability of the temperature modification device to change temperature in a predetermined zone is repeatedly computed. When one of these values is computed, it is used in determining whether the ability of the temperature modification device to change temperature in the predetermined zone has deteriorated over time. This is done by comparing a current efficiency value with a previous efficiency value. In response to a determined deterioration exceeding a predetermined tolerance, a control signal for initiating inspection of the temperature modification device is communicated, thereby enabling the device to be serviced in response to a detected operating condition of the device and before actual failure of the device.
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