欢迎访问《太阳能学报》官方网站,今天是 分享到:
ISSN 0254-0096 CN 11-2082/K

太阳能学报 ›› 2022, Vol. 43 ›› Issue (12): 1-12.DOI: 10.19912/j.0254-0096.tynxb.2021-0623

• •    下一篇

闭式深层海水供冷系统换热特性及优化设计研究

刘艳峰1,2, 赵书年2, 周勇1, 庄照犇2, 陈耀文1,2, 刘怀灿3   

  1. 1.西部绿色建筑国家重点实验室,西安 710055;
    2.西安建筑科技大学建筑设备科学与工程学院,西安 710055;
    3.空调设备及系统运行节能国家重点实验室,珠海 519070
  • 收稿日期:2021-06-03 出版日期:2022-12-28 发布日期:2023-06-28
  • 通讯作者: 刘艳峰(1971—),男,博士、教授、博士生导师,主要从事建筑节能、太阳能利用方面的研究。lyfxjd@163.com
  • 基金资助:
    国家自然科学基金重大项目课题(51590911); 空调设备及系统运行节能国家重点实验室开放课题(ACSKL2020KT03)

STUDY ON HEAT TRANSFER CHARACTERISTICS AND OPTIMAL DESIGN OF CLOSED DEEP SEAWATER COOLING SYSTEM

Liu Yanfeng1,2, Zhao Shunian2, Zhou Yong1, Zhuang Zhaoben2, Chen Yaowen1,2, Liu Huaican3   

  1. 1. State Key Laboratory of Green Building in Western China, Xi’an 710055, China;
    2. School of Building Services Science and Engineering, Xi’an University of Architecture and Technology, Xi’an 710055, China;
    3. State Key Laboratory of Air-conditioning Equipment and System Energy Conservation, Zhuhai 519070, China
  • Received:2021-06-03 Online:2022-12-28 Published:2023-06-28

摘要: 针对低纬度岛屿地区全年温度高、湿度大,空调全年运行时间长而常规能源运输成本高,传统高能耗空调系统难以适应的问题,提出一种利用深层海水供冷的闭式空调系统。根据换热特性的差异,将换热管道分为沿程垂直换热管道和海底换热盘管两部分,通过数值模拟研究管径、流速等参数对垂直管段和海底换热盘管段传热性能的影响。研究结果表明:垂直管段管径在0.6 m以内,流速在1~2 m/s范围可保证较高的换热性能;对于海底换热盘管段,最佳管径为0.025~0.050 m,最佳流速为0.4~0.8 m/s。在此基础上建立适用于垂直管段优化设计的费用年值数学模型,计算其比摩阻、流速,形成设计用水力计算表,并给出适用于海底换热盘管段工程设计的设计线算图及其修正公式。

关键词: 海水, 供冷系统, 换热特性, 优化

Abstract: In view of the high temperature and humidity in the low-latitude island area, the long running time of the air conditioner throughout the year and the high transportation cost of conventional energy, it is difficult for the traditional high energy consumption air conditioning system to adapt. In this paper, a closed air conditioning system using deep sea water for cooling is proposed. According to the difference of heat transfer characteristics, the heat transfer pipeline is divided into two parts: vertical heat transfer pipeline and submarine heat transfer coil. The effects of pipe diameter and flow velocity on the heat transfer performance of vertical pipe and submarine heat transfer coil are studied by numerical simulation. The results show that the pipe diameter of the vertical section is less than 0.6 m and the flow velocity in the range of 1-2 m/s can ensure higher heat transfer performance, while for the submarine heat exchanger coil section, the optimum diameter is 0.025 to 0.05 m and the best flow velocity is 0.4-0.8 m/s. On this basis, the mathematical model of annual cost value suitable for the optimal design of vertical pipe section is established, the specific friction and flow velocity are calculated, and the hydraulic calculation table for design is formed. The design line diagram and its modified formula suitable for the engineering design of submarine heat exchanger coil section are given.

Key words: seawater, cooling systems, heat transfer performance, optimization

中图分类号: