Based on continuously measured temperatures and flow rates collected from the refinery plant history database, a semi-empirical number of transfer units (NTU) model and neural network-based models are developed.
aIn the simulation, the number of heat transfer units of the air-to-air heat exchanger and the solution-to-solution heat exchanger are defined as 3.0. 在模仿,空对空热转换器的热传递单位的数量和解答对解答热转换器被定义成3.0。[translate]
Furthermore, it is found that by increasing the plate number, an increase in number of transfer units (NTU) and the subsequent improvement in thermal performance on one hand, and a decrease in maldistribution parameter (m) and the consequent deteriorated performance due to maldistribution on the ...
[7] basically compared the number of heat transfer units versus the power input per heat exchanger volume of different plate fin surfaces including surfaces with sand grain roughness 因此, Soland等。 (7)基本上热传递单位的数量对功率输入每different板材fin表面的热转换器容量包括表面与沙粒...
aHence, Soland et al. [7] basically compared the number of heat transfer units versus the power input per heat exchanger volume of different plate fin surfaces 因此, Soland等。 (7)基本上比较了热传递单位的数量对功率输入每different板材fin表面的热转换器容量[translate]...
performanceoftworowtuberowswasbetter. Keywords:dimpledfintubeheatexchanger;tuberownumber;enhancedheattransfer 0 引言 翅片管式换热器广泛应用于空调、化工、食品 加工等行业中,特别是空调制冷行业.由于翅片管 式换热器的热阻主要集中在空气侧,因而强化空气 侧的换热非常重要.强化翅片是提高整个换热器性 郑州轻工业学院学...
Heat transfer and frictional pressure drop during condensation in plate heat exchangers: Assessment of correlations and a new method 2.2 Forces in condensing flow The Reynolds number is the ratio of inertia to viscous forces and has different forms including Reeq, ReLO, ReL and ReG. Eq. (6) ...
Chapter 6Estimating the Number of Shells and Heat TransferArea of Heat Exchanger Network6.1 Area TargetingIn addition to the required information to predict energy targeting, the compositecurve also contains some necessary data for area targeting of the heat exchangernetwork [11].To calculate the ...
Luciu, R. S., et al., Nusselt Number and Convection Heat Transfer Coefficient for a Coaxial Heat Exchanger Using Al2O3-Water ph=5 Nanofluid, Bulletin of the Polytechnic Institute of Jassy, LV(LIX) (2009), 2, pp. 71-80Luciu, R.S., et al., Nusselt Number and Convection Heat ...
Reynolds numberdetermines the nature of the flow.SAHis aheat exchangerin which heat transfer occurs throughforced convection. Hence Re plays an important role in deciding its performance. But Re never works alone; instead, its effect changes with variation in other parameters like e/D, P/e, in...