SU1456740A1 - Heat exchanger - Google Patents

Abstract

Invention m. used in cryogenic plants. The purpose of the invention is to intensify heat exchange by reducing the axial thermal conductivity. Tubes 2 with a fin 3 made of a material whose thermal conductivity is less than the thermal conductivity of the material of the tube 2 are wound onto the core 1 in several layers. Each layer can contain alternating order with pipes 2 of the tube 4 with a fin 5 of a material whose thermal conductivity higher thermal conductivity of the material of the fins 3. The fins 3 and 5 are involved in the intensification of heat exchange and act as spacers between the tubes 2.4. Using finning, the taylots are transferred axially in construction. The use of these materials for the finning prevents undercrowding, reduces the loss of cooling capacity, 1 p. f-ly, 1 ill. Q S (L SP about 4

Description

The invention relates to heat engineering and can be used in cryogenic plants.

The purpose of the invention is to intensify heat exchange by reducing the axial thermal conductivity.

The drawing shows the proposed heat exchanger.

The heat exchanger contains a core 1 with main pipes 2 wound on it in several layers with finning 3. The fins 3 of each pipe 2 are made of a material whose thermal conductivity is less than the thermal conductivity of the material of the pipe 2. As the material of the pipe 2 can be used, for example, copper , and as the material of the fins 3 - prvoloka stainless steel.

Each layer can contain additional pipes 4 alternating with the main pipes 2 with fin 5 of a material whose thermal conductivity is higher than the thermal conductivity of the fin material 3 of the main pipes 2. Copper wire can be used as the fin material 5. The number of such pipes 4 is no more than a third of the total number of pipes 2 and 4 layers.

A warm runoff of the coolant, for example, high pressure gels (P 1.6 F (a, T 80 K)) passes inside pipes 2 and 4, and a cold stream, for example, low pressure gels

(R

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five

0

five

0

five

0.07 Mlla, T 5.05K), in the annular space, as a result of which heat exchange takes place between them. The fins 3 and 5 participate in the intensification of heat exchange and play the role of distributing the elements between pipes 2 and 4. The fins 3 and 5 transfer heat along the structure in the axial direction. In this case, the use of the specified materials for the fins 3 and 5 prevents the underexposure and reduces the loss of cooling capacity.

F about rm ula invented and

Claims (2)

1. Heat exchanger, mainly for cryogenic installations, containing a core with several layers of fins wound on it, characterized in that, in order to intensify heat exchange by reducing axial thermal conductivity, the fin of each pipe layer is made of a material whose thermal conductivity is less than the thermal conductivity of the pipe material . 2. A heat exchanger according to claim 1, which is characterized in that each layer contains alternately in alternate order from the main additional pipes with fins of a material whose thermal conductivity is higher than the thermal conductivity of the material of the fins of the main pipes. Editor I. Gorna Compiled by O. Akimova Tehred L. Oliynyk Proofreader V. Girn to Order 7541/36 Circulation 569 VNSh1PI of the State Committee for Inventions and Discoveries at the State Committee on Science and Technology of the USSR 113035, Moscow, Zh-35, 4/5 Raushsk nab. "..". "P ..." e ".. BW" .. ". A.". "..",. „ i Production and printing company, Uzhgorod, st. Project, 4 Subscription