Thermal performance analysis of liquid desiccant evaporative cooling air-conditioning system driven by low-grade heat

ZHANG Fan; YIN Yonggao

doi:10.11949/j.issn.0438-1157.20161411

您当前的位置：

首页 >

文章列表页 >

Thermal performance analysis of liquid desiccant evaporative cooling air-conditioning system driven by low-grade heat

更新时间：2025-11-26

- Thermal performance analysis of liquid desiccant evaporative cooling air-conditioning system driven by low-grade heat
- CIESC Journal Issue S2, Pages: 275-283(2016)
- 作者机构：
  
  东南大学能源与环境学院, 能源热转换及其过程测控教育部重点实验室,江苏,南京,210096
- 作者简介：
- 基金信息：
- DOI：10.11949/j.issn.0438-1157.20161411
  CLC： U831.6
- Online First：30 December 2016，
  
  Published：30 December 2016
- 稿件说明：
移动端阅览
ZHANG Fan, YIN Yonggao. Thermal performance analysis of liquid desiccant evaporative cooling air-conditioning system driven by low-grade heat[J]. CIESC Journal, 2016, (S2): 275-283.
DOI：

ZHANG Fan, YIN Yonggao. Thermal performance analysis of liquid desiccant evaporative cooling air-conditioning system driven by low-grade heat[J]. CIESC Journal, 2016, (S2): 275-283. DOI： 10.11949/j.issn.0438-1157.20161411.

摘要

溶液除湿蒸发冷却空调系统（LDECS）结合了溶液除湿与蒸发冷却技术的优势，是一种具有广阔发展前景的非压缩式空调系统。提出了一种低品位热能驱动的LDECS，该系统由处理全部湿负荷的溶液除湿系统和承担显热负荷的再生式间接蒸发冷却器构成。建立了系统各主要部件的数学模型，研究了再生器进口溶液温度Ts，reg，in、液-液热交换器效率εSSHX、室外空气温度和相对湿度对该系统用作全新风机组时稳态热力性能的影响。结果表明，在南京夏季典型工况下，该系统送风参数为17.9℃、9.2 g·kg，热力系数TCOP可达0.56。Ts，reg，in在70℃左右时可以满足送风参数的要求同时保持较高的TCOP。自循环比越小，εSSHX对TCOP以及溶液加热器和冷却器负荷的影响越大。此外，该系统适合应用在夏季高温高湿地区。

Abstract

Liquid desiccant evaporative cooling air-conditioning system (LDECS)

which combines both advantages of liquid desiccant and evaporative cooling technology

is a very promising alternative to the non-vapor-compression air-conditioning system.In this paper

a LDECS driven by low-grade heat is proposed

which consists of a liquid desiccant system with self-cycles that handles the total latent load and a regenerative evaporative cooler that removes the sensible heat.Mathematical models of the major components of the system are established to investigate the effects of four key parameters

namely

regenerator inlet solution temperature Ts

reg

solution-to-solution heat exchanger effectiveness εSSHX

ambient air temperature and relative humidity on steady-state thermal performance of the LDECS used as a dedicated outdoor air system.The results show that the supply air of 17.9℃ and 9.2 g·kg-1 with the thermal coefficient of performance TCOP of 0.56 can be achieved under the typical summer condition of Nanjing. The Ts

reg

in of about 70℃ can achieve a high TCOP with the qualified supply air condition. The impacts of εSSHX on TCOP and the capacities of solution heater and cooler are more significant when the value of self-cycle ratio is smaller.Besides

the proposed LDECS is suitable for the application in hot-humid zone.

关键词

Keywords

references

Views

219

下载量

CSCD

Alert me when the article has been cited

提交

Tools

Publicity Resources

Experimental comparison on dehumidification performance of LiCl and CaCl2 under evaporative cooling condition

Simulation of methyl nitrite regeneration in packed column

Evaluating large language models for prediction of pulsed column extraction process for spent fuel reprocessing

Process simulations and multi-ion coupled transport mechanism for hydrogen-driven electrochemical CO2 capture system

Multi-objective genetic algorithm optimization for thermal insulation performance of liquid hydrogen tank with multiple vapor-cooled shields

Related Author

Donggen PENG

Shaohua XU

LI Wenlong

WANG Weihan

LI Zhenhua

MA Xinbin

YU Ting

LIU Yingqi

Related Institution

School of Civil Engineering and Architecture, Nanchang University

Key Laboratory for Green Chemical Technology, School of Chemical Engineering and Technology, Tianjin University

China Institute of Atomic Energy

School of Computer Science, University of South China

SJTU Paris Elite Institute of Technology, Shanghai Jiao Tong University

⁰