In the present investigation, the steady state performance of a rectangular single phase natural circulation loop (NCL) with end heat exchangers is studied. One-dimensional governing equations are considered in developing the mathematical model. Analytical expressions are derived for the circulation rate and temperature profile. However, the individual performance parameters are to be computed iteratively as the equations are strongly coupled. A suitable iterative procedure is given to evaluate the important loop parameters such as steady state flow rate, and riser and downcomer temperatures. Few special cases are discussed where analytical expressions for circulation rate and temperature distribution can be obtained directly without any iterative procedure. It is also shown that both the hot and cold end heat exchangers should have equal conductance for maximization of circulation rate. This feature of NCL is identical with heat power cycle and can be explained in light of equipartition principle.
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Steady State Performance of a Single Phase Natural Circulation Loop With End Heat Exchangers
N. M. Rao,
N. M. Rao
Rolta India Limited
, Rolta Technology Park, MIDC, Andheri (E), Mumbai 400093, Maharashtra State, Indianmuralidhararao@yahoo.com
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B. Maiti,
B. Maiti
Department of Mechanical Engineering,
e-mail: bmaiti@mech.iitkgp.ernet.in
Indian Institute of Technology
, Kharagpur 721302, West Bengal, India
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P. K. Das
P. K. Das
Department of Mechanical Engineering,
e-mail: pkd@mech.iitkgp.ernet.in
Indian Institute of Technology
, Kharagpur 721302, West Bengal, India
Search for other works by this author on:
N. M. Rao
Rolta India Limited
, Rolta Technology Park, MIDC, Andheri (E), Mumbai 400093, Maharashtra State, Indianmuralidhararao@yahoo.com
B. Maiti
Department of Mechanical Engineering,
Indian Institute of Technology
, Kharagpur 721302, West Bengal, Indiae-mail: bmaiti@mech.iitkgp.ernet.in
P. K. Das
Department of Mechanical Engineering,
Indian Institute of Technology
, Kharagpur 721302, West Bengal, Indiae-mail: pkd@mech.iitkgp.ernet.in
J. Heat Transfer. Aug 2008, 130(8): 084506 (4 pages)
Published Online: June 10, 2008
Article history
Received:
March 19, 2007
Revised:
March 25, 2008
Published:
June 10, 2008
Citation
Rao, N. M., Maiti, B., and Das, P. K. (June 10, 2008). "Steady State Performance of a Single Phase Natural Circulation Loop With End Heat Exchangers." ASME. J. Heat Transfer. August 2008; 130(8): 084506. https://doi.org/10.1115/1.2928015
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