Source: http://www.google.com/patents/US7275377?dq=7,054,745
Timestamp: 2014-03-16 06:22:42
Document Index: 468337419

Matched Legal Cases: ['Application No. 11', 'Application No. 11', 'Application No. 10', 'Application No. 11', 'Application No. 10', 'Application No. 11', 'Application No. 11', 'Application No. 11', 'Application No. 11', 'Application No. 11', 'Application No. 11', 'Application No. 11', 'Application No. 11', 'Application No. 11', 'Application No. 11', 'Application No. 10', 'Application No. 11', 'Application No. 10', 'Application No. 11', 'Application No. 11', 'Application No. 10']

Patent US7275377 - Method and apparatus for monitoring refrigerant-cycle systems - Google PatentsSearch Images Maps Play YouTube News Gmail Drive More »Sign inAdvanced Patent SearchPatentsA 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...http://www.google.com/patents/US7275377?utm_source=gb-gplus-sharePatent US7275377 - Method and apparatus for monitoring refrigerant-cycle systemsAdvanced Patent SearchPublication numberUS7275377 B2Publication typeGrantApplication numberUS 10/916,222Publication dateOct 2, 2007Filing dateAug 11, 2004Priority dateAug 11, 2004Fee statusPaidAlso published asUS7114343, US7201006, US7244294, US7331187, US7343751, US8034170, US20060032245, US20060032246, US20060032247, US20060032248, US20060032379, US20060196196, US20060196197, US20080015797, US20080016888, US20080216495, US20080223051, US20120260804, US20130287063, US20140000290, US20140000291, US20140000292, US20140000293, US20140000294, US20140012422Publication number10916222, 916222, US 7275377 B2, US 7275377B2, US-B2-7275377, US7275377 B2, US7275377B2InventorsLawrence KatesOriginal AssigneeLawrence KatesExport CitationBiBTeX, EndNote, RefManPatent Citations (97), Non-Patent Citations (43), Referenced by (8), Classifications (48), Legal Events (3) External Links: USPTO, USPTO Assignment, EspacenetMethod and apparatus for monitoring refrigerant-cycle systemsUS 7275377 B2Abstract 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.
REFERENCE TO RELATED APPLICATION The entire contents of Applicant's copending U.S application Ser. No. 10/916,223, titled �METHOD AND APPARATUS FOR LOAD REDUCTION IN AN ELECTRIC POWER SYSTEM,� filed Aug. 11, 2004, are hereby incorporated by reference.
Net refrigerating effect (h c′ −h a)=67.11 Btu/lbHeat of compression (h d′ −h c′)=67.11 Btu/lb
W = 200 ⁢ ( Btu ⁢ / ⁢ min ) NRE ⁡ ( Btu ⁢ / ⁢ lb ) = 200 ⁢ ( Btu ⁢ / ⁢ min ) 67.11 ⁢ ⁢ Btu ⁢ / ⁢ lb = 2.98 ⁢ ⁢ lb ⁢ / ⁢ min Circulating more refrigerant typically involves either a larger compressor 105, or the same size of compressor 105 operating at a higher rpm.
Again taking the specific data from the heat content or enthalpy line, one now finds for the 120� F. condensing temperature cycle that ha=45.71, hc=108.14, hd=122.01, and he=112.78. Thus, the net refrigerating effect (hc−ha′)=62.43 Btu/lb, the heat of compression (hd′−hc)=13.87 Btu/lb, and the condenser 107 superheat (hd′-he′)=9.23 Btu/lb
COT = ( 80 + 60 2 ) - 20 ⁢ ⁢ to ⁢ ⁢ 2 ⁢ 5 ⁢ � = 45 ⁢ ⁢ to ⁢ ⁢ 5 ⁢ 0 ⁢ � ⁢ ⁢ F . For an EER rating of 9.0+:
COT = ( 80 + 60 2 ) - 15 ⁢ ⁢ to ⁢ ⁢ 2 ⁢ 0 ⁢ � = 50 ⁢ ⁢ to ⁢ ⁢ 5 ⁢ 5 ⁢ � ⁢ ⁢ F . Thus, the operating coil temperature changes with the EER rating of the unit.
107 (� F.)
CFM=H s(TD�1.08)
Q=0.68�CFM�gr moisture difference
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