Thermodynamic calculation method for natural ventilation cooling towers running in parallel

LIU Daoyuan; ZHU Pengbo; JIANG Guoce; HUANG Qichuan

doi:10.19666/j.rlfd.201905138

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Thermodynamic calculation method for natural ventilation cooling towers running in parallel

Thermal Power Generation Vol. 48, Issue 12, Pages: 134-137(2019)

更新时间：2025-09-28

- Thermodynamic calculation method for natural ventilation cooling towers running in parallel
- 作者机构：
  
  1. 淮浙煤电有限责任公司凤台发电分公司
  2. 西安热工研究院有限公司
- 作者简介：
- 基金信息：
- DOI：10.19666/j.rlfd.201905138
  CLC： TK172
- Published Online：31 December 2019，
  
  Published：2019
- 稿件说明：
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LIU Daoyuan, ZHU Pengbo, JIANG Guoce, et al. Thermodynamic calculation method for natural ventilation cooling towers running in parallel[J]. Thermal Power Generation, 2019, 48(12): 134-137.
DOI：

LIU Daoyuan, ZHU Pengbo, JIANG Guoce, et al. Thermodynamic calculation method for natural ventilation cooling towers running in parallel[J]. Thermal Power Generation, 2019, 48(12): 134-137. DOI： 10.19666/j.rlfd.201905138.

摘要

目前

关于冷却塔并列运行热力计算的研究开展得还不充分。本文通过分析自然通风冷却塔并列运行的特点

综合运用焓差法、穷举法和回归分析法进行并列运行冷却塔热力计算的方法研究

并通过实例实际验证该方法的有效性。结果表明:并列运行时

2座冷却塔的结构型式、气候条件、进水温度、等效温升与进出凝汽器冷却水温升均相同;一机两塔和一机一塔的循环水的蒸发损失相等;相较于一机一塔运行方式

一机两塔并列运行在各种负荷下均有显著的节能效果。本文结果可对相关改造项目以及运行节能分析提供参考。

Abstract

At present

the study on thermodynamic calculation of cooling towers running in parallel is insufficient. On the basis of analyzing the characteristics of parallel operation of natural ventilation cooling towers

this paper carries out a comprehensive study on thermodynamic calculation methods for cooling towers in parallel operation

by using the enthalpy potential method

exhaustion method and regression analysis method. Moreover

combining with the practical examples

it verifies the effectiveness of the methods. The results show that

in parallel operation

the parameters of the two cooling towers

such as the structural type

climatic conditions

water inlet temperature

equivalent temperature rise

and the temperature rise of the cooling water flowing in and out of the condenser

are the same. The evaporation loss of the circulating water of one unit with double-tower and one unit with one tower are equal. Compared with the operating mode of one unit with one tower

the parallel operation of one unit with double-tower can save the energy significantly at different loads. The results can provide references for relevant renovation projects and the analysis on operational energy saving.

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