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A Small Channel Parallel Tube Heat Exchanger and Its Calculation Method

A technology of parallel pipelines and heat exchangers, applied in the direction of indirect heat exchangers, heat exchanger types, heat transfer simulation, etc., can solve the problem of limiting heat transfer effects of heat exchangers, affecting heat transfer effects of heat Insufficient effect and other problems, to improve the effect of heat exchange outside the tube, make up for adverse effects, and improve the performance of the heat exchanger

Active Publication Date: 2021-06-15
浙江易斐科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The flow direction of the medium outside the heat exchanger tube is generally perpendicular to the windward side of the heat exchanger body to obtain greater heat exchange efficiency. For example, in a heat exchange system including fans, air ducts and heat exchangers, the fans are facing The windward side of the main body of the heat exchanger makes the air carry out forced convection. The wind speed in the middle of the air duct is the largest and the heat exchange effect is the best, but the wind speed at the edge of the air duct is the smallest or almost zero, and the heat exchange effect is obviously poor, which affects the The overall heat transfer effect of the heat exchanger
In addition, according to the different application scenarios of the heat exchanger, the use of the medium in the heat exchanger pipeline is also specific, and this specificity often limits the overall heat exchange effect of the heat exchanger

Method used

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  • A Small Channel Parallel Tube Heat Exchanger and Its Calculation Method
  • A Small Channel Parallel Tube Heat Exchanger and Its Calculation Method
  • A Small Channel Parallel Tube Heat Exchanger and Its Calculation Method

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Embodiment Construction

[0025] The present invention will be further elaborated below in conjunction with accompanying drawing:

[0026] see Figure 1 to Figure 4 As shown, a small-channel parallel pipe heat exchanger includes an inlet pipe 1, a parallel pipe 2 and a discharge pipe 3. The parallel pipe 2 communicates with the inlet pipe 1 and the discharge pipe 3 respectively, and the parallel pipe 2 is set as At least one row, and when parallel piping 2 outer diameter d o The value range is 1mmo ≤3.95mm, the heat transfer capacity of the heat exchanger and the structure of the heat exchanger conform to the following formula:

[0027]

[0028] Among them, Q is the heat transfer, the unit is W; C 0 is the error coefficient, the value is between 0.8 and 1.2; C 1 It is a constant value between 0.023 and 0.027; C 2 is a constant, the value is between 1.2 and 1.4; λ is the thermal conductivity of the medium outside the tube, the unit is W / (m k); ρ is the density of the medium outside the tube, the ...

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Abstract

A small channel parallel pipe heat exchanger, comprising an inlet pipe, a parallel pipe and a discharge pipe, the parallel pipes communicate with the inlet pipe and the discharge pipe respectively, and the parallel pipes are set as at least one row, and when the parallel piping outer diameter d o The value range is 1mm<d o When ≤3.95mm, a calculation formula between the heat transfer capacity of the heat exchanger and the structure of the heat exchanger is proposed. The technical proposal of the invention has the following beneficial effects: the heat exchanger has high heat exchange efficiency, low noise and energy saving.

Description

technical field [0001] The invention relates to the field of heat exchangers, in particular to a small channel parallel pipe heat exchanger and a calculation method. Background technique [0002] A heat exchanger is an energy-saving device that transfers heat between two or more media at different temperatures according to the Carnot cycle or reverse Carnot cycle, so the heat exchanger can act as a condenser or an evaporator. Among them, the condenser refers to using the medium outside the heat exchanger to cool the medium in the heat exchanger, so that the medium outside the heat exchanger absorbs the heat of the medium in the heat exchanger and the temperature rises. If the medium is a phase change substance, When the temperature is constant, energy storage is realized; the evaporator refers to the use of the medium outside the heat exchanger to heat the medium in the heat exchanger, so that the medium outside the heat exchanger absorbs the cooling capacity of the medium i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F28D1/053F25B39/00G06F17/15
CPCF25B39/00F28D1/05333F28F2200/00G06F17/15
Inventor 郑时红赵云鹏茅新波
Owner 浙江易斐科技有限公司
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