scholarly journals Experimental researches of thermal hydraulic characteristics in the model of sodium-air heat exchanger for fast reactor emergency cooling system

2014 ◽  
Vol 2014 (1) ◽  
pp. 149-159
Author(s):  
Aleksandr Pavlovich Sorokin ◽  
Evgeny Fyodorovich Ivanov ◽  
Galina Pavlovna Bogoslovskaya ◽  
Yurij Danilovich Levchenko ◽  
Vitalij Vladimirovich Privezentsev ◽  
...  
Keyword(s):  
Heat Exchanger ◽  
Fast Reactor ◽  
Cooling System ◽  
Hydraulic Characteristics ◽  
Experimental Researches

Analysis code development for the direct reactor auxiliary cooling system of the pool-type sodium-cooled fast reactor

Kerntechnik ◽  
2018 ◽  
Vol 83 (3) ◽  
pp. 232-236 ◽  
Author(s):  
D. L. Zhang ◽  
P. Song ◽  
S. Wang ◽  
X. Wang ◽  
J. Chen ◽  
...  
Keyword(s):  
Fast Reactor ◽  
Cooling System ◽  
Pool Type ◽  
Code Development

Remote Heat Pipe Based Heat Exchanger Performance in Notebook Cooling

2005 ◽  
Author(s):  
Seyyed Khandani ◽  
Himanshu Pokharna ◽  
Sridhar Machiroutu ◽  
Eric DiStefano
Keyword(s):  
Heat Exchanger ◽  
Thermal Resistance ◽  
Heat Pipe ◽  
Cooling System ◽  
Temperature Drop ◽  
Operating Conditions ◽  
Cooling Systems ◽  
Temperature Variations ◽  
Non Linear ◽  
Condenser Temperature

Remote heat pipe based heat exchanger cooling systems are becoming increasingly popular in cooling of notebook computers. In such cooling systems, one or more heat pipes transfer the heat from the more populated area to a location with sufficient space allowing the use of a heat exchanger for removal of the heat from the system. In analsysis of such systems, the temperature drop in the condenser section of the heat pipe is assumed negligible due to the nature of the condensation process. However, in testing of various systems, non linear longitudinal temperature drops in the heat pipe in the range of 2 to 15 °C, for different processor power and heat exchanger airflow, have been measured. Such temperature drops could cause higher condenser thermal resistance and result in lower overall heat exchanger performance. In fact the application of the conventional method of estimating the thermal performance, which does not consider such a nonlinear temperature variations, results in inaccurate design of the cooling system and requires unnecessarily higher safety factors to compensate for this inaccuracy. To address the problem, this paper offers a new analytical approach for modeling the heat pipe based heat exchanger performance under various operating conditions. The method can be used with any arbitrary condenser temperature variations. The results of the model show significant increase in heat exchanger thermal resistance when considering a non linear condenser temperature drop. The experimental data also verifies the result of the model with sufficient accuracy and therefore validates the application of this model in estimating the performance of these systems.   This paper was also originally published as part of the Proceedings of the ASME 2005 Pacific Rim Technical Conference and Exhibition on Integration and Packaging of MEMS, NEMS, and Electronic Systems.

Processing Techniques of a Silicon Carbide Heat Exchanger and its Capable Properties – A Review

2015 ◽  
Vol 787 ◽  
pp. 513-517 ◽  
Author(s):  
R. Pachaiyappan ◽  
R. Gopinath ◽  
S. Gopalakannan
Keyword(s):  
Silicon Carbide ◽  
Heat Exchanger ◽  
Gas Turbines ◽  
Cooling System ◽  
Composite Ceramic ◽  
Processing Technique ◽  
Full Potential ◽  
Absorption Chillers ◽  
Evaporative Cooling System ◽  
Processing Techniques

Silicon carbides is a composite ceramic material produced from inorganic non-metallic substances, formed from the molten mass which solidifies on cooling and simultaneously matured by the action of heat. It is used in various applications such as grinding wheels, filtration of gases and water, absorption, catalyst supports, concentrated solar powers, thermoelectric conversion etc. The modern usage of silicon carbide is fabricated as a heat exchanger for high temperature applications. Leaving behind steel and aluminium, silicon carbide has an excellent temperature withstanding capability of 1425°C. It is resistant to corrosion and chemical erosion. Modern fusion reactors, Stirling cycle based gas turbines, evaporators in evaporative cooling system for air condition and generator in LiBr/H2O absorption chillers for air conditioning those systems heat transfer rate can be improved by replacing a present heat exchanger with silicon carbide heat exchanger. This review presents a detailed discussion about processing technique of such a silicon carbide. Modern known processing techniques are partial sintering, direct foaming, replica, sacrificial template and bonding techniques. The full potential of these materials can be achieved when properties are directed over specified application. While eyeing over full potential it is highly dependent on processing techniques.

Hydraulic characteristics of a fast reactor fuel subassembly: An experimental investigation

2017 ◽  
Vol 102 ◽  
pp. 255-267 ◽  
Author(s):  
G. Padmakumar ◽  
K. Velusamy ◽  
B.V.S.S. Prasad ◽  
K.K. Rajan
Keyword(s):  
Experimental Investigation ◽  
Fast Reactor ◽  
Reactor Fuel ◽  
Hydraulic Characteristics ◽  
Fast Reactor Fuel

Thermal hydraulic characteristics of spiral cross rod bundles in a lead–bismuth-cooled fast reactor

2021 ◽  
pp. 108850
Author(s):  
Yue Zeng ◽  
Pingjian Ming ◽  
Fengchen Li ◽  
Hongna Zhang
Keyword(s):  
Fast Reactor ◽  
Hydraulic Characteristics ◽  
Rod Bundles

Feasible study of a self-cooled solid desiccant cooling system based on desiccant coated heat exchanger

2013 ◽  
Vol 58 (1-2) ◽  
pp. 281-290 ◽  
Author(s):  
T.S. Ge ◽  
Y.J. Dai ◽  
R.Z. Wang ◽  
Y. Li
Keyword(s):  
Heat Exchanger ◽  
Cooling System ◽  
Feasible Study
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