SU808827A1

SU808827A1 - Heat mass exchage apparatus

Info

Publication number: SU808827A1
Application number: SU792767409A
Authority: SU
Inventors: Александр Дмитриевич Корнеев; Василий Дмитриевич Беляев; Калуст Акопович Калунянц; Анатолий Михайлович Карпов; Сергей Дмитриевич Корнеев; Анатолий Александрович Складнев; Геннадий Егорович Скворцов; Евгений Николаевич Пирогов
Original assignee: Всесоюзный Научно-Исследовательскийбиотехнический Институт
Priority date: 1979-05-28
Filing date: 1979-05-28
Publication date: 1981-02-28

Description

Изобретение относится к тепломассообменным аппаратам.The invention relates to heat and mass transfer apparatus.

Известен тепломассообменный аппарат, содержащий пучок тепловых труб, зоны конденсации которых заключены в кожух” ξΐ}.Known heat and mass transfer apparatus containing a bundle of heat pipes, condensation zones which are enclosed in a casing "ξΐ}.

Сйнако известная конструкция тепломассообменного аппарата недостаточно эффективна при передаче тепла вследствие низких коэффициентов теплоотдачи в зоне отвода тепла (зоне конденсации) и не позволяет регулировать теплоте мпературу. рабочего объема.However, the known design of the heat and mass transfer apparatus is not effective enough in transferring heat due to low heat transfer coefficients in the heat removal zone (condensation zone) and does not allow controlling the heat of the temperature. working volume.

Цель изобретения - устранение указанных недостатков, интенсификация теплообмена путем обеспечения щелевого кипения и регулировка температуры рабочего объема.The purpose of the invention is the elimination of these disadvantages, the intensification of heat transfer by providing crevice boiling and adjusting the temperature of the working volume.

Указанная цель достигается тем, что на днище кожуха установлены цилиндры, расположенные с зазором относительно ‘ зон конденсации тепловых труб и имеющие внутренний диаметр, равный 1,1-1,2 наружного диаметра тепловых труб.This goal is achieved by the fact that on the bottom of the casing there are cylinders located with a gap relative to ‘zones of condensation of the heat pipes and having an inner diameter equal to 1.1-1.2 of the outer diameter of the heat pipes.

Кроме того, цилиндры в зоне днища имеют подпитывающие отверстия.In addition, the cylinders in the bottom area have feed holes.

Цилиндры выполнены из пористого материала.The cylinders are made of porous material.

На фиг. 1 представлен предлагаемый тепломассообменный аппарат? на фиг. 2 сечение А-А на фиг. 1.In FIG. 1 presents the proposed heat and mass transfer apparatus? in FIG. 2, section AA in FIG. one.

Тепломассообменный аппарат содержит пучок тепловых труб 1 с зонами 2 испарения и зонами 3 конденсации, заключенными в кожух 4. На днище 5 кожуха 4 установлены цилиндры 6, расположенные с зазором относительно зон 3 конденсации тепловых труб 1 и имеющие внутренний диаметр, давний 1,1-1,2 наружного диаметра тепловых труб 1. В нижей части цилиндров 6 размещены подпитывающие отверстия 7, над пучком тепловых труб помещены сепараторы-отбойники 8. Цилиндры 6 могут быть выполнены из пористого материала. Кожух 4 снабжен ¹патрубками 9 и 10 подвода и отвода легкокипящего хладагента.The heat and mass transfer apparatus contains a bundle of heat pipes 1 with evaporation zones 2 and condensation zones 3 enclosed in a casing 4. On the bottom 5 of the casing 4, cylinders 6 are installed, which are located with a gap relative to the condensation zones 3 of the heat pipes 1 and having an inner diameter of 1.1- 1.2 of the outer diameter of the heat pipes 1. In the lower part of the cylinders 6 are feeding holes 7, separator chippers are placed above the bundle of heat pipes 8. The cylinders 6 can be made of porous material. The casing 4 is equipped with ¹ pipes 9 and 10 of the supply and removal of low-boiling refrigerant.

808827 4 выбросы жидкости за счет пардифтового » эффекта через патруббк 10. За счет изменения давления в зоне 3 конденсации можно изменять температуру кипения в ₅ зоне 3 конденсации (температурный напор, теплопередающую способность и соответственно температуру рабочего объёма). Таким образом, предлагаемое изобре- . тение позволит·значительно ^увеличить ) 1₀ коэффициент теплопередачи за счет образования зоны кипения в щелевом зазоре, образованном коаксиально расположенным цилиндром и тепловой трубой.808827 4 liquid discharges due to the partift effect through the nozzle 10. Due to the pressure change in the condensation zone 3, the boiling temperature in the _5th condensation zone 3 can be changed (temperature head, heat transfer capacity and, accordingly, working volume temperature). Thus, the proposed invention. the flow will make it possible to · significantly increase) 1 ₀ the heat transfer coefficient due to the formation of a boiling zone in the crevice gap formed by the coaxially located cylinder and the heat pipe.

Claims

The invention relates to heat and mass transfer apparatus. A heat and mass transfer apparatus containing a bundle of heat pipes whose condensation zones are enclosed in a casing 1 is known. The known design of a heat and mass transfer apparatus is not efficient enough to transfer heat due to low heat transfer coefficients in the heat removal zone (condensation zone) and does not allow heat to be controlled. working volume. The purpose of the invention is to eliminate these drawbacks, intensify the heat exchange by providing a gap boil and adjust the temperature of the working volume. This goal is achieved by the fact that cylinders are installed at the bottom of the casing, which is located with a gap relative to the condensation zones of heat pipes and has an inner diameter equal to 1.1-1.2 of the outer diameter of heat pipes. In addition, the cylinders in the bottom zone have feed holes. Cylinders are made of porous material. FIG. 1 shows the proposed heat and mass transfer apparatus in FIG. 2, section A-A in the firm. 1. The heat and mass transfer apparatus contains a bundle of heat pipes 1 with evaporation zones 2 and condensation zones 3 enclosed in a casing 4. Cylinders 6 are installed on the bottom 5 of the casing 4, which are located with a gap relative to the condensation zones 3 of heat pipes 1 and have an internal diameter of 1, 1 1-1,2 outer diameter of heat pipes 1. In the lower part of the cylinders 6 are placed feed holes 7, separators-screen bars 8 are placed above the heat pipe bundle. Cylinders 6 can be made of vaporized material. Casing 4 is equipped with nozzles 9 and 1O for supplying and discharging lightly boiling refrigerant. The operation of the heat and mass transfer apparatus is carried out as follows. The heat flux that must be removed is connected to the evaporation zone 2 and transmitted through the wall of the heat pipes 1 of the working fluid (for example, Freon-I). As a result of heat transfer, the working fluid heats up and boils. The resulting vapor due to pressure drop enters the condensation zone 3, where it condenses, and the condensate returns back to the evaporation zone due to the force of gravity or the forces of surface tension. The casing 4 is filled with a light boiling coolant (for example, freon-12), the boiling point of which is lower than the boiling point of the working fluid inside the heat pipe. When heat is transferred from the condensation zone 3 of the heat pipe through the wall of the refrigerant, its slit boiling occurs. At the same time, the steam formation process takes place in the annular gap formed by the heat pipe 1 and ailustrome 6. Conducting the vaporization process in the annular gap allows sharply increasing the true volumetric steam content and, accordingly, increasing the heat transfer rate from the heat pipe walls to the cooling refrigerant (for example, 3). -5 times compared to boiling in a large volume). The resulting light boiling refrigerant vapor is sucked through the 1O pipe, condensed, and in a liquefied state is fed through the pipe 9 back to the casing 4. The overcooled liquid flows to the heat transfer surface through the feed hole 7, Separator bumpers 8, located above the nyi ryi. heat pipes 1. prevent liquid emissions due to the pardiftovy effect through pipe 1O. By varying the pressure in the condensation zone 3, the boiling point in the condensation zone 3 (temperature head, heat transfer capacity and, accordingly, temperature of the working volume) can be changed. Thus, the proposed invented. This will allow to significantly increase 1 heat transfer coefficient due to the formation of a boiling zone in a slit gap formed by a coaxial cylinder and a heat pipe. Claims. I 1. A heat exchange apparatus containing a bundle of heat pipes, the condensation zones of which are enclosed in a casing, distinguished by the fact that, in order to intensify heat exchange by providing a gap boil, cylinders are installed at the bottom of the casing with a gap relative to the condensation zones of heat pipes and having an internal diameter equal to 1.1-1.2 outer diameter of heat pipes.

2. The apparatus according to claim 1, in accordance with the fact that the cylinders in the bottom zone have feed holes. .

3. The apparatus according to claim 1, in connection with the fact that the cylinders are made of porous material. Sources of information taken into account in the examination 1. USSR author's certificate 557252, cl. Р 28t3 15 / ОО, 1974. №