WO2005004179A1 - Method of cooling an oil immersed electrical machine using a heat pump - Google Patents

Method of cooling an oil immersed electrical machine using a heat pump Download PDF

Info

Publication number
WO2005004179A1
WO2005004179A1 PCT/CA2003/001275 CA0301275W WO2005004179A1 WO 2005004179 A1 WO2005004179 A1 WO 2005004179A1 CA 0301275 W CA0301275 W CA 0301275W WO 2005004179 A1 WO2005004179 A1 WO 2005004179A1
Authority
WO
WIPO (PCT)
Prior art keywords
type
size
cooling
item
color
Prior art date
Application number
PCT/CA2003/001275
Other languages
French (fr)
Inventor
Rafic Chehouri
Original Assignee
Rafic Chehouri
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Rafic Chehouri filed Critical Rafic Chehouri
Priority to AU2003304302A priority Critical patent/AU2003304302A1/en
Publication of WO2005004179A1 publication Critical patent/WO2005004179A1/en

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P3/00—Liquid cooling
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/08—Cooling; Ventilating
    • H01F27/10—Liquid cooling
    • H01F27/12—Oil cooling
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/08—Cooling; Ventilating
    • H01F27/10—Liquid cooling
    • H01F27/18—Liquid cooling by evaporating liquids
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P3/00—Liquid cooling
    • F01P2003/006—Liquid cooling the liquid being oil

Definitions

  • This invention relates to Liquid* -to- Gas* cooling* of equipments*
  • Oil* and Gas* to circulate separately inside cooling tank* or area, through evaporator coil*, where heat transfer between substances will takes place.
  • the Gas* is to be compressed back to liquid state with any refrigeration cycle* process. Hot air is to blow outside the equipment*.

Abstract

Method of cooling an 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/compressing cycle. Finally heat is removed by air flow.

Description

METHOD OF COOLING AN OIL IMMERSED ELECTRICAL MACHINE USING A HEAT PUMP
The Description:
In Short: This invention relates to Liquid* -to- Gas* cooling* of equipments*
Oil* and Gas* to circulate separately inside cooling tank* or area, through evaporator coil*, where heat transfer between substances will takes place. The Gas* is to be compressed back to liquid state with any refrigeration cycle* process. Hot air is to blow outside the equipment*.
Foundation of RAG COOLING invention function is by utilizing the Law(s) of Thermodynamics, equation of state, Enthalpy, heat transfer/ exchange, specific heat of matters and the refrigeration base of discussion.
It is common for any electrical or mechanical equipment(s), which contain Oil* to cool or lubricate for its power and work output delivery, to have heat rise from within and from outside heat imposed upon. Usually, when heat rise to unfavorable stage, equipment(s) power out put and efficiency drop down.
I have found that by Circulating two different substance(s) such as Liquid to Gas separately, with different specific heat, and with time rate of heat flow, we could establish great and faster cooling to the Liquid from higher specific heat of Gas* when in its liquid state. Please refer to Drawing Figure #1 for more description.
Other future applications when apply different type of Refrigeration Gas* (aiming for Hydrogen on last frontier, helium could be used too) that could change the unit efficiency substantially. Hydrogen has 14235 Joule/Kg. °K of specific heat, if I am not wrong, the highest between all substances.
From one end Specific heat of Transformer's* Oil* is less than of Freon gas*, and specific heat of Freon is double when it is in liquid state. Boiling temperature of Gas is way less than in Oil. For these reasons and because of Equilibrium State per thermodynamics, it balance almost twice or more heat sucked from Oil by liquid Gas when raises both substances one-degree in temperature.

Claims

THE EMBODIMENTS OF THE INVENTION IN WHICH AN EXCLUSIVE PROPERTY OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS, AND NOT LIMITED TO. 1. A process for claiming the function and application for cooling of Equipments) contains Oil or other substance(s), by Liquid-to-Gas heat transfer application function, based on circulation method between substances and specific heat difference(s) of such, for instance Oil Transformers, Nuclear Reactor Cooling systems, generators, motors, engines including auto and/or aerospace engines, turbines including gas type, related utility substation equipments or in general any other machinery or equipment that call for, this include any applicable Gas- to-Gas heat transfer applications),
2. Any type, made, shape size, material, or color of Pump(s) or circulation process to be used to circulate the substance for example: pumps, valves or other items used with reference to claim item #1 above,
3. Any type, made, shape, size, material, or color are to be used as Cooling Tank(s) or cooling area where circulation between different substance to take place with reference to claim item #1 above,
4. Any type, made, shape, size, material, or color of Refrigeration/ Cooling Cycle or process method(s) to be used including any items or accessories desired or selected in any given cycle reference to claim item #1 above,
5. Any type, kind or size of Oil(s) to be used as one of the substance in the circulating process reference to claim item #1 above,
6. Any type, kind or size of Gas(s) to be used as one of the substance in the circulating procedure with reference to claim item #1 above,
7. Any type, made, shape size, material, or color of Evaporator coil to be used for application relate to reference claim #1 above,
8. Any type, made, shape size, material, or color(s) for Control Panel(s) or control process used for application relate to reference to claim #1 above,
9. Any type, made, shape, size, material, or color of Unit Structure to be used to fit or adopt the process described to all above references claim # 1 to # 8 including build in application within the given equipments with reference claim to item #1 above. This include any add on to any existing equipment(s) or adoption to any new design for any use per claims listed above.
PCT/CA2003/001275 2003-07-07 2003-08-29 Method of cooling an oil immersed electrical machine using a heat pump WO2005004179A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2003304302A AU2003304302A1 (en) 2003-07-07 2003-08-29 Method of cooling an oil immersed electrical machine using a heat pump

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CA 2435505 CA2435505C (en) 2003-07-07 2003-07-07 Rac cooling
CA2,435,505 2003-07-07

Publications (1)

Publication Number Publication Date
WO2005004179A1 true WO2005004179A1 (en) 2005-01-13

Family

ID=29783918

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CA2003/001275 WO2005004179A1 (en) 2003-07-07 2003-08-29 Method of cooling an oil immersed electrical machine using a heat pump

Country Status (3)

Country Link
AU (1) AU2003304302A1 (en)
CA (1) CA2435505C (en)
WO (1) WO2005004179A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100764408B1 (en) 2006-03-22 2007-10-05 임성황 Transformer Cooling Device Using Power Generation Rankine Cycle
CN108010670A (en) * 2017-12-12 2018-05-08 中车大连机车研究所有限公司 Tractive transformer cooling system used for rail vehicle based on phase-change heat-exchange technology

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB832920A (en) * 1957-01-24 1960-04-21 George Osborne Mclean Electric transformer coolers
DE3032591A1 (en) * 1980-08-27 1982-04-01 Siemens AG, 1000 Berlin und 8000 München Cooling system for electrical machine - has prim. cooling agent flowing through pipes in store with heat pump circuit
US4394635A (en) * 1981-04-16 1983-07-19 General Electric Company Method for determining dissolved gas concentrations in dielectric coolants
US20020088242A1 (en) * 2001-01-08 2002-07-11 Williams Douglas P. Refrigeration cooled transformer
US20030121651A1 (en) * 2000-05-08 2003-07-03 Kjell Andersson Installation for utilizing surplus heat from a power transformer

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB832920A (en) * 1957-01-24 1960-04-21 George Osborne Mclean Electric transformer coolers
DE3032591A1 (en) * 1980-08-27 1982-04-01 Siemens AG, 1000 Berlin und 8000 München Cooling system for electrical machine - has prim. cooling agent flowing through pipes in store with heat pump circuit
US4394635A (en) * 1981-04-16 1983-07-19 General Electric Company Method for determining dissolved gas concentrations in dielectric coolants
US20030121651A1 (en) * 2000-05-08 2003-07-03 Kjell Andersson Installation for utilizing surplus heat from a power transformer
US20020088242A1 (en) * 2001-01-08 2002-07-11 Williams Douglas P. Refrigeration cooled transformer

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100764408B1 (en) 2006-03-22 2007-10-05 임성황 Transformer Cooling Device Using Power Generation Rankine Cycle
CN108010670A (en) * 2017-12-12 2018-05-08 中车大连机车研究所有限公司 Tractive transformer cooling system used for rail vehicle based on phase-change heat-exchange technology

Also Published As

Publication number Publication date
CA2435505A1 (en) 2003-12-06
CA2435505C (en) 2004-10-26
AU2003304302A1 (en) 2005-01-21

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