Patent
Refrigeration system analyzer
Gary P. Murray,Ralph C. Lower,Byron J. Dunham,Don A. Bulla +3 more
- 28 Oct 1987
82
TL;DR: In this paper, an apparatus for analyzing air conditioning systems comprising a temperature probe adapted for manual placement at each of a plurality of preselected points in turn around the refrigerant loop to provide signals indicative of temperature at each point.
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Abstract: Apparatus for analyzing air conditioning systems comprising a temperature probe adapted for manual placement at each of a plurality of preselected points in turn around the refrigerant loop to provide signals indicative of temperature at each point Apparatus electronics are coupled by a cable to the temperature probe and includes facility for reading and storing each of the probe temperature measurements in turn Information indicative of standards and ranges of temperature data for properly operating refrigeration systems of a number of models and manufacturers is prestored in apparatus memory The system temperature readings are compared to each other and to the prestored data to diagnose a plurality of fault conditions and to display diagnosed fault conditions to an operator
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Citations
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Apparatus and method for detecting faults and providing diagnostics in vapor compression cycle equipment
Todd M. Rossi,Dale Rossi,Jonathan David Douglas,Timothy P. Stockman +3 more
- 02 Dec 2003
TL;DR: In this paper, an apparatus and method for detecting faults and providing diagnostic information in a refrigeration system comprising a microprocessor, a means for inputting information to the microprocessor and five sensors is presented.
145
References
Patent
Automatic fault diagnostic apparatus for a heat pump air conditioning system
Stamp Custis Lee,Herzog Rollie Richard +1 more
- 14 Oct 1980
TL;DR: In this article, a microprocessor controlled apparatus is provided for automatically diagnosing faults in a heat pump system, where temperature sensors located at strategic points in the system are read periodically in accordance with a preprogrammed diagnostic routine.
154
Patent
Specific coefficient of performance measuring device
J. Ward Macarthur,James V. Radomski +1 more
- 26 Jul 1982
TL;DR: In this article, the authors developed a device for measuring and/or displaying the specific coefficient of performance of a mechanical vapor-compression system, which can be installed totally external to a building in which the mechanical vapor compression system is being used as a cooling system, or as a heat pump for heating and cooling.
106
Patent
Method for performance control at heat pumps or refrigerating installations and arrangement for carrying out the method.
Henrik Sven Enström
- 29 Nov 1984
TL;DR: In this article, the authors present a method of primarily testing and performance controlling heat pumps, refrigerating installations or corresponding systems, at which system thermal energy from at least one heat source (K) is supplied to an energy-carrying medium (1), a refrigerant, which circulates in the system and is advanced therein by an electrically driven compressor (2), where thermal energy is emitted and exchanged to a thermal energy carrying medium, a thermal sink, where the control comprises the determining of real performance, such as thermal output (Qo1) and so-called coefficient
88
Patent
Diagnostic system for heat pump
Frank E. Wills
- 03 Oct 1977
TL;DR: In this paper, a diagnostic system for apparatus including a heat pump, a thermostat and a logic module intercoupled to regulate operation of the heat pump electro-mechanical units is provided.
73
Patent
Refrigeration system efficiency monitor
R Mcashan
- 28 Oct 1970
TL;DR: In this paper, a monitor for monitoring and comparing the efficiency of operating conditions in a refrigeration system is disclosed, which includes a first and second sensing means such as thermistors, for sensing and comparing values of two conditions in the system, such as an ambient temperature condition and the temperature of the refrigerant.
60
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