Patent ID: 7343751
Filing Date: 2008-03-18
Classification: F24F,F25B,F25D,G01K,G01N,G05B,G05D,Y10S

Abstract:
1. An intelligent thermostat for monitoring the operation of a refrigerant-cycle system, comprising: a display configured to display temperature and system efficiency; and a processing system configured to receive sensor data from one or more condenser unit sensors and one or more evaporator unit sensors, said processing system configured to calculate an efficiency of said refrigerant-cycle system using at least a portion of said sensor data from said one or more condenser unit sensors and at least a portion of said sensor data from said one or more evaporator unit sensors, and to display a parameter related to said efficiency, wherein said processing system is configured to diagnose performance problems due to excessive load using at least a portion of said sensor data from said one or more condenser unit sensors and at least a portion of said sensor data from said one or more evaporator unit sensors, wherein said efficiency comprises an actual efficiency based at least in part on an ambient temperature.