Simultaneous Transport of Heat and Adsorbate in Closed Type Adsorption Cooling System Utilizing Solar Heat

1986 ◽  
Vol 108 (3) ◽  
pp. 239-245 ◽  
Author(s):  
A. Sakoda ◽  
M. Suzuki

Quantitative analyses are tried for the simultaneous transport of heat and adsorbate in the operation of a closed-type solar-powered adsorption cooling system. Experimental results obtained with a small-scale unit are successfully interpreted by the model proposed here, which takes into account adsorption properties of a combination of adsorbate and adsorbent employed in the system, structures of the equipment, and its operating conditions. Also, the coefficient of performances of the system of various conditions are estimated by numerical simulations on the basis of the model. Structures of the container of adsorbents are optimized to provide larger COP.

2017 ◽  
Vol 14 (1) ◽  
pp. 75-85 ◽  
Author(s):  
Ahmed M. Reda ◽  
Ahmed Hamza H. Ali ◽  
Ibrahim S. Taha ◽  
Mahmoud G. Morsy

Energies ◽  
2018 ◽  
Vol 11 (6) ◽  
pp. 1499 ◽  
Author(s):  
Marzia Khanam ◽  
Skander Jribi ◽  
Takahiko Miyazaki ◽  
Bidyut Saha ◽  
Shigeru Koyama

Energy ◽  
1998 ◽  
Vol 23 (5) ◽  
pp. 347-353 ◽  
Author(s):  
Vichan Tangkengsirisin ◽  
Atsushi Kanzawa ◽  
Takayuki Watanabe

2018 ◽  
Vol 131 ◽  
pp. 649-659 ◽  
Author(s):  
L.Q. Zhu ◽  
C.Y. Tso ◽  
K.C. Chan ◽  
C.L. Wu ◽  
Christopher Y.H. Chao ◽  
...  

2007 ◽  
Vol 18 (4) ◽  
pp. 41-48 ◽  
Author(s):  
J.C. Ruppersberg ◽  
R.T. Dobson

A closed loop thermosyphon is an energy transfer device that employs thermally induced density gra-dients to induce circulation of the working fluid thereby obviating the need for any mechanical moving parts such as pumps and pump controls. This increases the reliability and safety of the cool-ing system and reduces installation, operation and maintenance costs. These characteristics make it a particularly attractive option for the cavity cooling system of the Pebble Bed Modular Reactor (PBMR). Loop thermosyphons are however, known to become unstable under certain initial and operating conditions. It is therefore necessary to conduct an experimental and theoretical study of the start-up and transient behaviour of such a system. A small scale test loop was built representing a section of a concept cooling system. A number of representative yet typical experimental temperature and flow rate curves for a range of initial and boundary condi-tions were generated, plotted and are given as a function of time. These curves show that oscillatory temperature and flow occurred that was dependent on the differing design and operating conditions. A number of theoretical modelling and actual cooling system design problem areas were identified. These problem areas need to be addressed if more accu-racy is required to capture the erratic and ostensibly chaotic heat transfer behaviour of the loop.


2009 ◽  
Vol 52 (6) ◽  
pp. 1551-1562
Author(s):  
JingYi Wu ◽  
Sheng Li ◽  
YanFei Hu

2012 ◽  
Vol 30 ◽  
pp. 704-714 ◽  
Author(s):  
Sébastien Thomas ◽  
Samuel Hennaut ◽  
Stefan Maas ◽  
Philippe Andre

Sign in / Sign up

Export Citation Format

Share Document