[1] Zhang Haiqiang, Liu Xiaohua, Jiang Yi,. Performance analysis of three-stage liquid desiccantdeep dehumidification processor driven by heat pump [J]. Journal of Southeast University (English Edition), 2010, 26 (2): 217-221. [doi:10.3969/j.issn.1003-7985.2010.02.016]
Copy
Performance analysis of three-stage liquid desiccantdeep dehumidification processor driven by heat pump(
)
)Journal of Southeast University (English Edition)[ISSN:1003-7985/CN:32-1325/N]
- Volumn:
- 26
- Issue:
- 2010 2
- Page:
- 217-221
- Research Field:
- Energy and Power Engineering
- Publishing date:
- 2010-06-30
Info
- Title:
- Performance analysis of three-stage liquid desiccantdeep dehumidification processor driven by heat pump
- Author(s):
- Zhang Haiqiang; Liu Xiaohua; Jiang Yi
- School of Architecture, Tsinghua University, Beijing 100084, China
- PACS:
- TU831
- DOI:
- 10.3969/j.issn.1003-7985.2010.02.016
- Abstract:
- A new type of a heat pump driven three-stage lithium bromide liquid desiccant deep dehumidification processor is presented, which can dehumidify the outdoor humid air to a rather dry state, even when there is no available indoor exhaust air.The test results show that with an outdoor air temperature of 28 to 31 ℃ and an outdoor air humidity ratio of 11 to 14 g/kg, the supply air temperature and the supply air humidity ratio are 1.6 to 2.6 ℃ and 2.6 to 3.0 g/kg, respectively, and the coefficient of performance(COP)of the processor is 1.8.During the test, a liquid pipeline link problem leading to mixture losses of hot and cold liquid desiccants is found.These pipelines are modified.Then, the performance of the modified processor is investigated.And the experimental results show that with an outdoor air temperature of 25 to 32 ℃ and an outdoor air humidity ratio of 18 to 21 g/kg, the supply air temperature and the supply air humidity ratio are 3.2 to 4.0 ℃ and 3.4 to 3.6 g/kg, respectively, and the COP is 2.8.Finally, a mathematical model of the processor is established.The comparison of the simulation results and the test results of the processor exhibits that the pipeline modification improves the performance by about 20%.
References:
[1] Jiang Y, Li Z, Chen X Y, et al.Liquid desiccant air-conditioning system and its applications[J].Heating Ventilation & Air Conditioning, 2004, 34(11):88-97.(in Chinese)
[2] Zhang X S, Yin Y G, Cao Y R.Experimental study on the performance of liquid desiccant cooling air conditioning with energy storage[J].Journal of Engineering Thermophysics, 2004, 25(4):546-549.(in Chinese)
[3] Lazzarin R M, Castellotti F.A new heat pump desiccant dehumidifier for supermarket application[J].Energy and Buildings, 2007, 39(1):59-65.
[4] Liu X H, Li Z, Jiang Y.Liquid desiccant total heat exchanger and heat pump combined fresh air handling units[J].Heating Ventilation & Air Conditioning, 2004, 34(11):98-102.(in Chinese)
[5] Liu S Q, Liu X H, Jiang Y.System principle and performance tests of heat pump two-stage liquid desiccant outdoor air handler[J].Heating Ventilation & Air Conditioning, 2008, 38(1):54-63.(in Chinese)
[6] Beijing Sinorefine Ltd.Handbook of heat pump driven liquid desiccant deep dehumidification processor[EB/OL].[2009-04-15].http://www.sinorefine.com.cn.
[7] Liu S Q, Liu X H, Jiang Y.Simulation method and application of liquid desiccant air conditioning system[J].Special Topic on Air-Conditioning, 2006(5):49-52.(in Chinese)
Memo
- Memo:
-
Biographies: Zhang Haiqiang(1987—), male, graduate;Liu Xiaohua(corresponding author), female, doctor, associate professor, lxh@mail.tsinghua.edu.cn
Foundation item: The National Natural Science Foundation of China(No.50778094).
Citation: Zhang Haiqiang, Liu Xiaohua, Jiang Yi.Performance analysis of three-stage liquid desiccant deep dehumidification processor driven by heat pump[J].Journal of Southeast University(English Edition), 2010, 26(2):217-221.