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High-temperature waste heat recovery machine and process for screw type air compressor

A waste heat recovery and air compressor technology, applied in the direction of machines/engines, mechanical equipment, indirect heat exchangers, etc., can solve the problem that affects the promotion and utilization of waste heat recovery of screw air compressors. Water and other issues, to meet the high-quality heat dissipation requirements, reasonable structure, the effect of expanding the use of space

Inactive Publication Date: 2014-06-18
杭州凯嘉节能科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Screw air compressor waste heat recovery is an important field of energy conservation and environmental protection. At present, the existing waste heat recovery equipment mostly adopts traditional heat exchange technology. Due to the reasons of traditional heat exchangers and application methods, waste heat recovery is used to process hot water. The highest temperature is generally lower than 70 degrees Celsius, and sometimes it can’t even reach the temperature of domestic water. The quality and efficiency are low, which seriously affects the promotion and utilization of waste heat recovery of screw air compressors

Method used

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  • High-temperature waste heat recovery machine and process for screw type air compressor
  • High-temperature waste heat recovery machine and process for screw type air compressor

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Effect test

Embodiment 1

[0033] Such as figure 1As shown, a screw air compressor high temperature waste heat recovery machine, the waste heat recovery machine has a tube heat exchanger connected with the screw air compressor; the tube heat exchanger has an inner tube coaxially arranged 2 and the composite tube composed of the outer tube 3; in this embodiment, the inner tube 2 is a copper tube made of high thermal conductivity metal material, which is in a spiral shape; the outer tube 3 is made of aluminum plastic with a diameter larger tube, first make the copper tube as the inner tube and the aluminum-plastic tube as the outer tube into an equivalent disk-shaped spiral tube, and the inner wall of the outer tube has a plurality of inwardly protruding support points 8 for Support the inner tube and set the inner tube and the outer tube coaxially, and increase the local turbulence effect of the tap water in the flow, thereby increasing the heat exchange effect; then screw the copper tube into the alumin...

Embodiment 2

[0039] Since the high-temperature oil of the screw air compressor accounts for 75% of the total waste heat of the machine, and the high-temperature compressed air accounts for 25% of the total waste heat, and embodiment 1 only completes the heat exchange between the high-temperature oil of the screw air compressor and tap water, in order to further improve The temperature of tap water. In this embodiment, the tap water inlet 10 of the tube heat exchanger communicates with the tap water pipe through the gas-liquid heat exchanger I. The gas-liquid heat exchanger I is used to make the screw air compressor The high-temperature compressed air exchanges heat with the tap water, so that the tap water is preheated once before entering the tube heat exchanger, which increases the temperature of the tap water, and the high-temperature compressed air of the screw air compressor is discharged after heat exchange and cooling, reducing the loss of heat energy. Loss; The structure of tube hea...

Embodiment 3

[0043] Since the high-temperature oil of the screw air compressor accounts for 75% of the total waste heat of the machine, and the high-temperature compressed air accounts for 25% of the total waste heat, and embodiment 1 only completes the heat exchange between the high-temperature oil of the screw air compressor and tap water, in order to further improve The temperature of the tap water, in this embodiment, through the gas-liquid heat exchanger II designed by the screw air compressor itself, the tap water and the high-temperature compressed air of the screw air compressor are heat-exchanged, so that the tap water can be obtained before entering the tube heat exchanger. One-time preheating increases the temperature of tap water, and discharges the high-temperature compressed air of the screw air compressor after exchanging heat and cooling down, reducing the loss of heat energy; the air-liquid heat exchanger designed by the screw air compressor itself in the prior art The cool...

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Abstract

The invention belongs to the technical field of waste heat recovery, and relates to a high-temperature waste heat recovery machine and a high-temperature waste heat recovery process for a screw type air compressor. The high-temperature waste heat recovery machine for the screw type air compressor is provided with a pipe heat exchanger connected with the screw type air compressor (23), wherein the pipe heat exchanger is provided with a composite pipe consisting of an inner pipe (2) and an outer pipe (3), which are coaxially arranged; the composite pipe is spirally coiled from bottom to top to form a stepped temperature rising coiled pipe, and gaps are formed between adjacent upper and lower layers of the coiled pipe; the gaps between the inner pipe (2) and the outer pipe (3) form a tap water heat exchange passage; an inner cavity of the inner pipe (2) forms a high-temperature heat-conduction oil heat exchange passage; heat-conduction oil in the high-temperature heat-conduction oil heat exchange passage and tap water in the tap water heat exchange passage flow in opposite directions for heat exchange. According to the machine and the process, the high-quality radiation requirements of the screw type air compressor are met, the efficiency of the air compressor is improved, and meanwhile, waste heat can be used for efficiently making high-quality hot water with temperature more than 80 DEG C.

Description

technical field [0001] The present invention belongs to the technical field of waste heat recovery, and relates to a high-temperature waste heat recovery machine and process of a screw air compressor. Background technique [0002] Screw air compressor waste heat recovery is an important field of energy conservation and environmental protection. At present, the existing waste heat recovery equipment mostly adopts traditional heat exchange technology. Due to the reasons of traditional heat exchangers and application methods, waste heat recovery is used to process hot water. The maximum temperature is generally lower than 70 degrees Celsius, and sometimes it is even lower than the temperature of domestic water. The quality and efficiency are low, which seriously affects the promotion and utilization of waste heat recovery of screw air compressors. Contents of the invention [0003] In order to overcome the deficiencies of the prior art, the object of the present invention is ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04C29/04F04C28/28F28D7/14
Inventor 袁世俊陈克明
Owner 杭州凯嘉节能科技有限公司
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