Study of the heat exchanger effectiveness in unsteady state

N. Chitou; T.H. Mai; J. Padet

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Study of the heat exchanger effectiveness in unsteady state

机译：非稳态换热器效率研究

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A method is proposed to determine the thermal effectiveness of heat exchangers in situ, when one of the fluids is submitted to any kind of flow rate variations. It leads to the definition of the average effectiveness in unsteady state, which forms an extension of the classical effectiveness (NTU method) used in steady state. It requires an unsophisticated equipment of measurement and should lead to an easy and continuous control of the fouling of heat exchangers.

机译：当一种流体受到任何种类的流量变化时，提出了一种确定热交换器原位热效率的方法。这导致了对非稳态平均有效性的定义，这形成了稳态中经典有效性（NTU方法）的扩展。它需要简单的测量设备，并且应该可以轻松，连续地控制热交换器的结垢。

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来源
《Entropie》 |1999年第221期|p.86-91|共6页
作者
N. Chitou; T.H. Mai; J. Padet;
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原文格式 PDF
正文语种 eng
中图分类热力工程、热机;
关键词
energetics; thermal transfer; bi-tube heat exchanger;

机译：能量学热传递双管换热器;

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专利

1. Heat exchanger effectiveness in unsteady state [J] . T. H. Mai, N. Chitou, J. Padet The European physical journal. Applied physics . 1999,第1期

机译：不稳定状态下的热交换器效率
2. Experimental study of inverse identification of unsteady heat transfer coefficient in a fin and tube heat exchanger assembly [J] . M. Mobtil, D. Bougeard, S. Russeil International Journal of Heat and Mass Transfer . 2018,第octa期

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3. Experimental and numerical study on unsteady natural convection heat transfer in helically coiled tube heat exchangers [J] . E. Neshat, S. Hossainpour, F. Bahiraee Heat and mass transfer . 2014,第6期

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4. Studies on the Effect of the Temperature of Intermediate Fluid on the Effectiveness of Three Fluid Heat Exchangers [C] . Vasudevan T., Rakesh S.G. International Conference on Functional Materials, Characterization, Solid State Physics, Power, Thermal and Combustion Energy . 2017

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5. UNSTEADY STATE SIMULATION AND CONTROL STUDY OF A COUNTERFLOW DISTRIBUTED PARAMETER SYSTEM: THE DOUBLE-PIPE HEAT EXCHANGER. [D] . BECKMAN, LAWRENCE VARNUM. 1969

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6. Cost-Effectiveness Analysis of Heat and Moisture Exchangers in Mechanically Ventilated Critically Ill Patients [O] . Mayra Goncalves Menegueti, Maria Auxiliadora-Martins, Altacilio Aparecido Nunes 2016

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7. Mathematical modeling of unsteady heat processes in countercurrent heat exchangers [O] . Viktor Konstantinovich Tolstykh, Kyrylo Anatoliiovych Pshenychnyi 2020

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8. CONCURRENT STUDIES OF ENHANCED HEAT TRANSFER AND MATERIALS FOR OCEAN THERMAL HEAT EXCHANGERS Period Covered March 1, 1978 to August 31, 1978 CONCURRENT STUDIES OF ENHANCED HEAT TRANSFER AND MATERIALS FOR OCEAN THERMAL HEAT EXCHANGERS Period Covered March 1, 1978 to August 31, 1978 [R] . Robert R. Rothfus, Arthur W. Westerberg, Shichune Yao 1978

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Study of the heat exchanger effectiveness in unsteady state

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