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SU983433A1 - Heat exchanging surface thawing method - Google Patents

Heat exchanging surface thawing method Download PDF

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Publication number
SU983433A1
SU983433A1 SU802870888A SU2870888A SU983433A1 SU 983433 A1 SU983433 A1 SU 983433A1 SU 802870888 A SU802870888 A SU 802870888A SU 2870888 A SU2870888 A SU 2870888A SU 983433 A1 SU983433 A1 SU 983433A1
Authority
SU
USSR - Soviet Union
Prior art keywords
heat
current
frequency
heat exchange
exchange surface
Prior art date
Application number
SU802870888A
Other languages
Russian (ru)
Inventor
Юрий Васильевич Мальгин
Эсенбек Абдрахманович Омурбеков
Original Assignee
Ленинградский технологический институт холодильной промышленности
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Application filed by Ленинградский технологический институт холодильной промышленности filed Critical Ленинградский технологический институт холодильной промышленности
Priority to SU802870888A priority Critical patent/SU983433A1/en
Application granted granted Critical
Publication of SU983433A1 publication Critical patent/SU983433A1/en

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Description

(54) СПОСОБ ОТТАИВАНИЯ ТЕПЛООБМЕННОЙ ПОВЕРХНОСТИ(54) METHOD FOR DETERMINING HEAT EXCHANGING SURFACE

Claims (2)

Изобретение относитс  к теплообмен Ной аппаратуре и может быть использовано в энергетической промышленности Известен способ удалени  ине  с по верхности охлаждакл их приборов холодильных камер путем нагрева поверхности с поспедуклцим воздействием электтрического импульса Г1 } Недостатком указанного способа - вл  етс  прогрев всей .массы приборов, что приводит к дополнительным тепловьп потер м и снижает эффективность удалени  ине . Ближайшим техническим решением  вл етс  способ оттаивани  теплообменной поверхности путем пропускани  по ней электрического тока высокой часто ты. Ток высокой частоты проходит по тонкому поверхностному слою теплообме ной поверхности, что приводит к нагреву лишь поверхностного сло , толщина которого уменьшаетс  с увеличением чао тоты тока 23. Недостатком известного способа  в- л ютс  тепловые потери иэ-за необходимости растапливани  образовавшегос  льда, что увеличивает врем  оттаивани  и iTvieHbmaeT эффективность оттаивани  теплооименной поверхности в целом. Целью изобретени   вл етс  повышение эффективности.. Указанна  цель достигаетс  тем, что частоту тока поддерживают в пределах 1-7,5 ГГц. Способ осуществл етс  следующим образом. При нарастании ине  теплообменную поверхность подключают к генератору тока высокой частоты и частоту тока поддерживают в пределах 1-7,5 ГГц. Ток проходит по. тонкому поверхностному слою теплообменной поверхности, разогревают его и начинаетс  процесс плавлени  прилегакЗшего ине . Образовавша с  вода поглощает энергию электромагнитного пол , причем при частоте колебаний токаев пределах 1-7,5 ГГц происходит 3 9S5 резкий, аномальный рост поглощени  энергин и вода BCKrniaer.nElaBneHiie в приповерхностном слое возрастает, иней валамываетс  и tгr №л eтc  от теплообменной поверхности. Предложенный способ может быть использован тв(кже   при очистке теплообменных поверхностей от отложений, в состав которых вход т легко кип щие компоненты. Оттаивание теплообменной поверхности предложенным способом уменьшает тепловые потери, ускор ет процесс и повьппает эффективность оттаивани  теплообменной поверхности в делом . 34 Формула изобретени  Способ оттаивани  теплообменной поверхности путем пропускани  по ней электрического тока высокой частоты. отличаюшийс  тем, что, с целью повышени  эффективности, частоту тока поддерживают в предел1а : 1-7,5 ГГц. Источники информаиии, прин тые во внимание при экспертизе 1. Авторское свидетельство СССР № 45О060, кЛ. Р 25 D 21/Об, 1974. The invention relates to heat exchange equipment and can be used in the energy industry. There is a known method of removing the surface of their refrigerating appliances from the surface of chambers by heating the surface with a strong electrical pulse G1}. The disadvantage of this method is to warm the entire mass of devices, which leads to additional heat loss and less efficient removal. The closest technical solution is a method of defrosting the heat exchange surface by passing an electric current of high frequency through it. The high frequency current passes through a thin surface layer of the heat-transfer surface, which leads to heating of only the surface layer, the thickness of which decreases with increasing current curvature 23. The disadvantage of the known method is the heat loss due to the need to melt the formed ice, which increases the time defrosting and iTvieHbmaeT the effectiveness of defrosting the heat-named surface as a whole. The aim of the invention is to increase the efficiency. This goal is achieved by maintaining the frequency of the current in the range of 1-7.5 GHz. The method is carried out as follows. When increasing, the heat exchange surface is connected to the high-frequency current generator and the current frequency is maintained within 1-7.5 GHz. The current passes through. a thin surface layer of the heat exchange surface, heat it up and the process of melting adjacent to it begins. Formed water absorbs the energy of the electromagnetic field, and at the frequency of oscillations of the current of 1–7.5 GHz, 3 9S5 sharp, anomalous increase in energy absorption and BCKrniaer.nElaBneHiie water in the near-surface layer increases, and the frost is collapsing from the heat exchange surface. The proposed method can be used by TV (even when cleaning heat-transfer surfaces from deposits, which include easily boiling components. Thawing of the heat-exchange surface by the proposed method reduces heat losses, speeds up the process and increases the efficiency of the heat-exchange surface thawing in the case. 34 defrosting the heat exchange surface by passing high frequency electric current through it, characterized in that, in order to increase efficiency, the frequency of are in the limit 1a: 1-7,5 GHz. Sources of information taken into account during the examination 1. USSR author's certificate No. 45О060, CL R 25 D 21 / On, 1974. 2. Авторское свидетельство СССР N 15О426, кл. F 26 В 5/06, 1961.2. USSR author's certificate N 15O426, cl. F 26 B 5/06, 1961.
SU802870888A 1980-01-14 1980-01-14 Heat exchanging surface thawing method SU983433A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SU802870888A SU983433A1 (en) 1980-01-14 1980-01-14 Heat exchanging surface thawing method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SU802870888A SU983433A1 (en) 1980-01-14 1980-01-14 Heat exchanging surface thawing method

Publications (1)

Publication Number Publication Date
SU983433A1 true SU983433A1 (en) 1982-12-23

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Family Applications (1)

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SU (1) SU983433A1 (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006002224A3 (en) * 2004-06-22 2006-04-06 Dartmouth College Pulse systems and methods for detaching ice
US7629558B2 (en) 2002-02-11 2009-12-08 The Trustees Of Dartmouth College Systems and methods for modifying an ice-to-object interface
US7638735B2 (en) 2002-02-11 2009-12-29 The Trustees Of Dartmouth College Pulse electrothermal and heat-storage ice detachment apparatus and methods
US8405002B2 (en) 2002-02-11 2013-03-26 The Trustees Of Dartmouth College Pulse electrothermal mold release icemaker with safety baffles for refrigerator
US8424324B2 (en) 2008-11-05 2013-04-23 The Trustees Of Dartmouth College Refrigerant evaporators with pulse-electrothermal defrosting
US8931296B2 (en) 2009-11-23 2015-01-13 John S. Chen System and method for energy-saving inductive heating of evaporators and other heat-exchangers

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7629558B2 (en) 2002-02-11 2009-12-08 The Trustees Of Dartmouth College Systems and methods for modifying an ice-to-object interface
US7638735B2 (en) 2002-02-11 2009-12-29 The Trustees Of Dartmouth College Pulse electrothermal and heat-storage ice detachment apparatus and methods
US8405002B2 (en) 2002-02-11 2013-03-26 The Trustees Of Dartmouth College Pulse electrothermal mold release icemaker with safety baffles for refrigerator
WO2006002224A3 (en) * 2004-06-22 2006-04-06 Dartmouth College Pulse systems and methods for detaching ice
US7703300B2 (en) 2004-06-22 2010-04-27 The Trustees Of Dartmouth College Pulse systems and methods for detaching ice
US8424324B2 (en) 2008-11-05 2013-04-23 The Trustees Of Dartmouth College Refrigerant evaporators with pulse-electrothermal defrosting
US8931296B2 (en) 2009-11-23 2015-01-13 John S. Chen System and method for energy-saving inductive heating of evaporators and other heat-exchangers
US11585588B2 (en) 2009-11-23 2023-02-21 John S. Chen System and method for energy-saving inductive heating of evaporators and other heat-exchangers

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