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>Experimental study of t urbulent flow heat transfer and pressure drop in a plate heat exchanger with chevron plates
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Experimental study of t urbulent flow heat transfer and pressure drop in a plate heat exchanger with chevron plates
Experimental data for isothermal pressure drop and heat transfer in single-phase water flows in a plate heat exchanger (PHE) with chevron plates are presented. A single-pass, U-type, counterflow PHE, with three different chevron plate arrangements is employed: two symmetric plate arrangements with beta chemical bounds 30 deg /30 deg and 60 deg /60 deg , and a mixed-plate arrangement with beta beta chemical bounds 30 deg /60 deg . With water flow rates in the turbulent flow regime (upp < Re < 10~4 and 2 < Pr < 6), effects of the chevron corrugation incluination angle beta on Nu and f characteristics of the pHE are investigated As beta increases and compared to a flat-plate pack, up to 2 to 5 times higher Nu are obtained; the concomitant f, however, are 13 to 44 times higher. Based on the elxperimental data for Re => 1000, predictive correlations of the form Nu chemical bounds C_1( beta ) Re~((p1)( beta )) Pr~(1/3) ( mu / mu _w)~(0.14) and f chemical bounds C_2 (bets ) Re~(p2( beta )) are devised. Also, at constant pumping power and depending upon beta , the heat transfer is found to be enhanced over 1.8 times that in equivalent flat-plate channels.
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机译：提出了一种具有以雪佛龙板的单相水中的等温压降和热传递的实验数据。采用单通，U型，逆流PHE，采用三种不同的雪佛龙板布置：与β化学界限30°/ 30°和60°/ 60°的两个对称板条，以及ββ的混合板装置化学界限30°/ 60°。随着湍流状态下的水流速率（UPP 1000的elxpery数据，Nu化学界的预测相关性C_1（β）Re〜（（P1）（β））Pr〜（1/3）（mu / mu _w）〜（0.14）和F化学界限C_2（BETS）RE〜（P2（β））被设计出来。此外，在恒定的泵送功率下并且根据β的不同，发现热传递增强了在等效平板通道中的1.8倍。
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