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A kind of checking method of closed cooling tower for hot water cooling

A technology of closed cooling tower and hot water cooling, which is applied in the field of calibration and calculation to achieve the effects of reducing production costs, improving heat exchange efficiency, and saving operating costs

Active Publication Date: 2021-08-24
济南蓝辰能源技术有限公司
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  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

[0007] However, the comprehensive consideration of heat transfer analysis and mass transfer analysis is often lacking in conventional calibration calculations.

Method used

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  • A kind of checking method of closed cooling tower for hot water cooling

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0063] Determine the working condition of the closed tower: single tower cooling water flow Q=25m 3 / h, hot water inlet temperature T 1 =42℃, outlet temperature T 2 =32°C,

[0064] Determine the meteorological conditions: dry bulb temperature θ=31°C, wet bulb temperature τ=27.5°C, atmospheric pressure Pa=101.325kPa, calculate relative humidity φ i 0.765, the moisture content of the air entering the tower x i 0.02182kg / kg(DA), dry bulb temperature corresponds to saturated steam partial pressure p θ 4.49kPa, wet bulb temperature corresponds to saturated steam partial pressure p τ 3.6698kPa, the density of wet air entering the tower ρ i 1.1487kg / m 3 , the enthalpy value of air entering the tower h i 86.968kJ / kg.

[0065] Determine coil structure parameters and tower type parameters: material: galvanized steel pipe, elliptical tube specification: 31.8×21.6×1.5mm, tube length 2.58m, 2 layers of tubes per pass, 41 tubes per pass, 10 rows in total, heat exchange area 89.8m2,...

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Abstract

The invention provides a closed cooling tower calibration method for hot water cooling, which uses the basic formula of heat transfer according to the existing parameters such as environmental meteorological conditions, cooling tasks, existing tower type parameters, cooling tower spray water volume, fan air volume, etc. And elliptical tube heat and mass transfer empirical formula for thermodynamic analysis, calculate the outlet temperature of hot water, verify the cooling capacity of the closed cooling tower, and guide the design and optimization of the closed cooling tower. The checking method includes thermodynamic heat transfer analysis, and also includes mass transfer analysis in the wet area. In addition, the present invention proposes a relatively mature calculation method for the special closed cooling tower composed of elliptical tube heat exchangers, which is The production of existing unconventional closed towers provides mature closed tower checking calculation theory to verify the rationality of closed tower design, improve heat exchange efficiency, reduce production costs, and save operating costs.

Description

technical field [0001] The check calculation method of the invention is applicable to the check process of the existing closed cooling tower and belongs to the field of cooling tower design. Background technique [0002] The closed cooling tower has a good cooling effect, and the cooling water is not in direct contact with the outside world, which ensures the cleanliness of the cooling water and has a broad market prospect. [0003] However, domestic closed tower design and verification methods are still immature, many manufacturers can only design and produce closed towers based on engineering experience, lack of verification process, and there is no data to prove whether the closed tower can meet the cooling task or whether design standards can be met. [0004] Especially for the elliptical tube closed cooling tower, there is even a lack of mature check calculation process. [0005] Traditional closed-loop thermal analysis focuses on heat transfer calculations. [0006]...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F28C1/14
CPCF28C1/14F28F2200/00
Inventor 赵元宾李慧杨玉杰
Owner 济南蓝辰能源技术有限公司
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