SU1076775A1 - Heat exchanger convective heat transfer determination method - Google Patents
Heat exchanger convective heat transfer determination method Download PDFInfo
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- SU1076775A1 SU1076775A1 SU823409853A SU3409853A SU1076775A1 SU 1076775 A1 SU1076775 A1 SU 1076775A1 SU 823409853 A SU823409853 A SU 823409853A SU 3409853 A SU3409853 A SU 3409853A SU 1076775 A1 SU1076775 A1 SU 1076775A1
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- SU
- USSR - Soviet Union
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- heat exchanger
- heat transfer
- temperature
- determination method
- transfer determination
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- Investigating Or Analyzing Materials Using Thermal Means (AREA)
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
Description
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Изобретение относитс к теплообменным устройствам и способам их испытани и может быть использовано, в частности, в электротехнике 11ри определении теплоотдачи радиаторов масл ных силовых трансформаторов.The invention relates to heat exchangers and methods for testing them and can be used, in particular, in electrical engineering, for determining the heat transfer from radiators of oil power transformers.
Известен способ определени теплоотдачи теплообменника путем нагревани его внутренней поверхности паром, измерени температуры и давлени пара, температуры и давлени охлаждак цего снаружи воздуха, температуры ст.енок теплообменника и определени по измеренгшм значени м тепловых характеристик теплообменника - плотности теплового потока и коэффициента теплоотдачи l j.A known method for determining heat transfer from a heat exchanger is by heating its inner surface with steam, measuring the temperature and pressure of steam, cooling the temperature outside the air, the temperature of the heat exchanger station, and determining the heat transfer density and heat transfer coefficient from the measured values of the heat exchanger.
Недостатком известного способа вл етс невозможность проведени испытаний при температурах ниже 373 К с использованием вод ного параThe disadvantage of this method is the impossibility of testing at temperatures below 373 K using water vapor.
Цель изобретени - расширение диапазона измерений.The purpose of the invention is to expand the measurement range.
Указанна цель достигаетс тем, что согласий способу определени теплоотдачи теплообменника путем нагревани его внутренней поверхности паром, измерени температуры и давлени паре, температуры и давле1ш охлаждающего снаружи воздуха, This goal is achieved by agreeing on the method of determining the heat transfer of a heat exchanger by heating its inner surface with steam, measuring the temperature and pressure of the steam, temperature and pressure of the cooling outside air,
температуры стенок теплообменника и определени теплового потока, в теплообменнике предварительно создют разрежение и производ т измерени при давлении ниже атмосферного.the temperature of the walls of the heat exchanger and the determination of the heat flux; in the heat exchanger, they first create a negative pressure and make measurements at a pressure below atmospheric.
На чертеже представлена схема устройства, по сн ющего реализацию способа.The drawing shows a diagram of the device, explaining the implementation of the method.
Устройство содержит теплообменник 1 с термопарами 2, нагреватель 3, залитый водой 4, вакуумный насос 5, вакуумметр 6, барометр 7 окружающего воздуха с термометром.The device includes a heat exchanger 1 with thermocouples 2, a heater 3 filled with water 4, a vacuum pump 5, a vacuum gauge 6, an ambient air barometer 7 with a thermometer.
Способ реализуют следукицим образом ,The method is implemented in a follow-up manner.
Вакуумным насосом 5 по показани м вакуумметра 6 .создают необходимое разрежение в теплообменнике, подают в теплообменник воду 4 так, чтобй она покрывала нагреватель 3, который включают на заданную мощность и производ т определение тепловых характеристик теплообменника по показани м приборов в установленном режиме.Using the vacuum pump 5, vacuum pump 5 creates the necessary vacuum in the heat exchanger, supplies water 4 to the heat exchanger so that it covers the heater 3, which is turned on for a given power and determines the thermal characteristics of the heat exchanger according to the instrument readings in the prescribed mode.
Использование изобретени позвол ет проводить измерени при температурах в пределах от 293 до 373 К, обеспечива расширение диапазона измерений.The use of the invention allows measurements to be carried out at temperatures ranging from 293 to 373 K, thus extending the measurement range.
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Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU823409853A SU1076775A1 (en) | 1982-02-02 | 1982-02-02 | Heat exchanger convective heat transfer determination method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU823409853A SU1076775A1 (en) | 1982-02-02 | 1982-02-02 | Heat exchanger convective heat transfer determination method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SU1076775A1 true SU1076775A1 (en) | 1984-02-29 |
Family
ID=21002030
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SU823409853A SU1076775A1 (en) | 1982-02-02 | 1982-02-02 | Heat exchanger convective heat transfer determination method |
Country Status (1)
| Country | Link |
|---|---|
| SU (1) | SU1076775A1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5178463A (en) * | 1991-12-12 | 1993-01-12 | Reynolds Metals Company | Method of and apparatus for measuring coolant quenching rates |
| DE4132399A1 (en) * | 1991-09-26 | 1993-04-01 | Manfred Dr Ing Riedel | Determining individual tap flows in domestic hot water system - provides representative measurements of quantity of water drawn off at temp. above threshold in individual dwellings from central supply |
| MD577Z (en) * | 2012-03-05 | 2013-07-31 | Институт Прикладной Физики Академии Наук Молдовы | Convective heat exchanger |
-
1982
- 1982-02-02 SU SU823409853A patent/SU1076775A1/en active
Non-Patent Citations (1)
| Title |
|---|
| 1. ОсиповаВ.П. Экспериментальное исследование процессов теплообмена. М., Энерги , 1979, с. 186. * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4132399A1 (en) * | 1991-09-26 | 1993-04-01 | Manfred Dr Ing Riedel | Determining individual tap flows in domestic hot water system - provides representative measurements of quantity of water drawn off at temp. above threshold in individual dwellings from central supply |
| US5178463A (en) * | 1991-12-12 | 1993-01-12 | Reynolds Metals Company | Method of and apparatus for measuring coolant quenching rates |
| MD577Z (en) * | 2012-03-05 | 2013-07-31 | Институт Прикладной Физики Академии Наук Молдовы | Convective heat exchanger |
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