H - Electricity
01
F
H01F 27/12 (2006.01) F01P 3/00 (2006.01) F28D 21/00 (2006.01) H01F 27/18 (2006.01)
Patent
CA 2435505
Method of cooling oil immersed transformer or an electrical machine by heat transfer to a liquefied gas, e.g. Freon. A first heat exchanger transfers heat from oil to liquefied gas, which circulates in a closed heat pump circuit with an evaporating cycle. Finally heat is removed by airflow. This done by either using external or remotely cooler unit containing heat exchanger in communication with conventional refrigeration unit on trailer or any fixed or movable applicable method to locate near Transformer, or by directly locating the heat exchanger and/or pre-engineered evaporating coil within the transformer housing connected to outside refrigeration unit. My new Transformer Oil cooler unit can be applied to existing transformers or can be adopted in new design and manufacturing of electrical Transformers, which can have better temperature control, and better cooling for the hot spot area in Transformers. This is a practical and cost effective system to cool electrical Transformers particularly under extreme conditions in which it will boost the transformers output and enhanced its efficiency. My system has not been previously available. My invention is liquid (Oil) -to-Gas cooling method and not to be confused with current Liquid-to-liquid or any Gas-to-Gas cooling practice.
Chehouri Rafic Adel
Na
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