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CLC number: TB6

On-line Access: 2013-08-01

Received: 2013-05-16

Revision Accepted: 2013-06-26

Crosschecked: 2013-07-10

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Journal of Zhejiang University SCIENCE A 2013 Vol.14 No.8 P.583-588

http://doi.org/10.1631/jzus.A1300171


Analysis of ice slurry production by direct contact heat transfer of air and water solution*


Author(s):  Xue-jun Zhang1, Ke-qing Zheng1, Ling-shi Wang1, Wei Wang1, Min Jiang1, Sheng-ying Zhao2

Affiliation(s):  1. Institute of Refrigeration and Cryogenics, Zhejiang University, Hangzhou 310027, China; more

Corresponding email(s):   zhaosy@zucc.edu.cn

Key Words:  Ice slurry, Generator, Air and water solution, Direct contact, Volumetric heat transfer coefficient, Liquefied natural gas (LNG)


Xue-jun Zhang, Ke-qing Zheng, Ling-shi Wang, Wei Wang, Min Jiang, Sheng-ying Zhao. Analysis of ice slurry production by direct contact heat transfer of air and water solution[J]. Journal of Zhejiang University Science A, 2013, 14(8): 583-588.

@article{title="Analysis of ice slurry production by direct contact heat transfer of air and water solution",
author="Xue-jun Zhang, Ke-qing Zheng, Ling-shi Wang, Wei Wang, Min Jiang, Sheng-ying Zhao",
journal="Journal of Zhejiang University Science A",
volume="14",
number="8",
pages="583-588",
year="2013",
publisher="Zhejiang University Press & Springer",
doi="10.1631/jzus.A1300171"
}

%0 Journal Article
%T Analysis of ice slurry production by direct contact heat transfer of air and water solution
%A Xue-jun Zhang
%A Ke-qing Zheng
%A Ling-shi Wang
%A Wei Wang
%A Min Jiang
%A Sheng-ying Zhao
%J Journal of Zhejiang University SCIENCE A
%V 14
%N 8
%P 583-588
%@ 1673-565X
%D 2013
%I Zhejiang University Press & Springer
%DOI 10.1631/jzus.A1300171

TY - JOUR
T1 - Analysis of ice slurry production by direct contact heat transfer of air and water solution
A1 - Xue-jun Zhang
A1 - Ke-qing Zheng
A1 - Ling-shi Wang
A1 - Wei Wang
A1 - Min Jiang
A1 - Sheng-ying Zhao
J0 - Journal of Zhejiang University Science A
VL - 14
IS - 8
SP - 583
EP - 588
%@ 1673-565X
Y1 - 2013
PB - Zhejiang University Press & Springer
ER -
DOI - 10.1631/jzus.A1300171


Abstract: 
In this paper, a novel system using direct contact heat transfer between air and water solution was proposed to generate ice slurry. The heat transfer process and the system performance were studied; energy efficiency coefficients of 0.038, 0.053, and 0.064 were obtained using different solutions. An empirical relationship between the volumetric heat transfer coefficient U v and the main parameters was obtained by fitting the experimental data. The U v calculated from the empirical formula agreed with the experimental U v quite well with a relative error of less than 15%. Based on the empirical formula, a laboratory-scale direct contact ice slurry generator was then constructed, with practical application in mind. If the air flow rate is fixed at 200 m3/h, the ice production rate will be 0.091 kg/min. The experimental results also showed that the cold energy consumption of the air compressor accounted for more than half of the total amount. To improve the system energy efficiency coefficient, it is necessary to increase the air pipes insulation and the solution’s thermal capacity, and also it is appropriate to utilize the free cold energy of liquefied natural gas (LNG).

Darkslateblue:Affiliate; Royal Blue:Author; Turquoise:Article

References

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