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Evaporator and heat absorber of separated gravity hot pipe

A gravity heat pipe and evaporator technology, applied in indirect heat exchangers, lighting and heating equipment, etc., can solve the problems of large liquid mass, inability to exert the efficiency of "heat collection tubes", and uneven liquid inlet into "heat collection tubes"

Inactive Publication Date: 2011-03-09
庞立升
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage of using this scheme is that the liquid working medium undergoes pool boiling evaporation in the lower half of the evaporating tube, and the upper half of the tube wall is not wetted by the liquid working medium and no phase change heat occurs, so the upper half of the evaporating tube cannot be fully utilized. heat exchange surface
There are defects in this patent: in the implementation process, possible small errors make the upper ports of the "channels" not at the same height, and the absolute values ​​of the areas of the liquid inlets of each channel immersed in the liquid are quite different. Figure 11 , attached Figure 12 , attached Figure 13 , then, the absolute value of the liquid intake also differs greatly. In the process of starting or running, it is possible that the lowest channel port can discharge all the return liquid, while the other channel ports have no liquid inflow; in addition, the liquid inlet of the "channel" only It can be on the inner side of the V-shaped groove, away from the heating surface, which is not conducive to heat transfer
The defect of this patent is that because the inlet temperature of the fluid in the "heat exchange tube" is lower than the outlet temperature, the condensed liquid work mass is large, resulting in a large amount of liquid entering the "heat collector tube" at the inlet position of the "heat exchange tube". The "heat pipe" enters the liquid unevenly, and the efficiency of the "heat collection pipe" cannot be exerted

Method used

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  • Evaporator and heat absorber of separated gravity hot pipe
  • Evaporator and heat absorber of separated gravity hot pipe
  • Evaporator and heat absorber of separated gravity hot pipe

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] The evaporator adopting technical solution A or technical solution B is used in a separate heat pipe system. The steam outlet (2.1) of the evaporator is connected with the steam rising pipe (4) of the heat pipe system, and the liquid inlet (2.2) of the evaporator is connected to the heat pipe The liquid return pipe (6) of the system is connected, as attached image 3 . The evaporator can be used as attached figure 1 , Attached figure 2 Any form shown.

[0042] If there is no error during implementation, it can be ensured that the upper ports of all the evaporating tubes (1) are at the same height, and it can be used in applications where the heat load is fixed or where the heat load changes.

[0043] If an error occurs during implementation, it can be used in situations where the heat load varies within a certain range. Contrasting with the description in the “Summary of the Invention” of this specification, the highest evaporating tube is higher than the lowest evaporati...

Embodiment 2

[0050] Adopt technical solution C or technical solution D heat pipe type heat sink. For the occasions where the heat load is fixed, the heat pipe type heat sink of technical solution C or technical solution D can be used.

[0051] If there is no error during implementation, it can be ensured that the upper ports of all the evaporating tubes (1) are at the same height, and it can be used in applications where the heat load is fixed or where the heat load changes.

[0052] If an error occurs during implementation, it can be used in situations where the heat load changes within a certain range. The analysis using the technical solution C is the same as the technical solution A of the first embodiment.

[0053] When the full load is small and the implementation is prone to error, technical solution D should be adopted. A capillary fabric block (12) can be set at the bottom of the upper header (2), and the capillary fabric belt (8) and the capillary fabric block (12) ) Weaving and connec...

Embodiment 3

[0057] As attached Picture 10 The technical solution is: the multiple evaporators of the separated gravity heat pipe of the present invention are matched with a condenser to form a separated heat pipe system, and a separation tank (10) and several separation tubes (9) are used to condense The reflux liquid of the evaporator is evenly distributed to each evaporator. The specific pipeline is that the steam outlet (2.1) of each evaporator is connected to a steam rising pipe, the steam rising pipes (4) of all evaporators are connected to the steam main pipe (11), and the steam main pipe is connected to the steam inlet of the condenser; The liquid outlet is connected to the liquid return pipe (6), the other end of the liquid return pipe (6) is connected to the liquid distribution box (10), the upper ends of several liquid distribution tubes (9) extend into the inner cavity of the liquid distribution box (10), the liquid distribution tube (9) A segment of the pipe wall located in th...

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PUM

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Abstract

It's a kind of evaporator of separating gravity heat pipe, which can make reflux condensed fluid in the hot pipe distribute uniformly on the evaporating pipe, and form falling film evaporation. The essentials of technological scheme are that the evaporator includes at least two evaporation tubes (1) and a upper header, and the part of the evaporation tube (1) in which there are liquid inlet holes(1.1) trends into the upper header (2), the upper ends of evaporators are the same height, so are the liquid inlet holes (1.1); outlet steam (2.1) and liquid inlet opening (2.2) are installed on the upper header; the openings of the evaporator (1) can be in its lower end, and all connect with sub-header; the evaporator (1) can be sealed in its lower end.

Description

Technical field [0001] The invention relates to an evaporator and a heat absorber of a separated gravity heat pipe, adopting a new structure, which can well solve the problem of evenly distributing the reflux condensed liquid of the separated heat pipe to the upper ends of each evaporation pipe to form falling film evaporation. Background technique [0002] The separated gravity heat pipe system has two or more evaporating tubes as the evaporating section, and the condensing section can be a single or multiple serpentine coils as the condensing section, and the steam rising pipe and the liquid return pipe are connected in the middle. [0003] According to the existing technical situation, according to the search, "separated heat pipe system (patent number CN98100172.6)", the condenser and the evaporator are arranged separately, and the condenser and the evaporator are connected by a steam riser pipe and a liquid return pipe. The main points of the technical solution are as fo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F28D15/02F28D15/04
CPCF28D15/0266
Inventor 庞立升
Owner 庞立升
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