Latest Research News on Heat Exchanger: Dec – 2019

The pinch design method for heat exchanger networks

A novel methodology is given for the planning of warmth money dealer networks. the tactic is that the 1st to mix sufficient  simplicity to be utilized by hand with close to certainty to spot “best” styles, even for giant issues. “Best” styles feature the very best degree of energy recovery doable with a given variety of capital things. Moreover, they feature network patterns needed permanently controllability, plant layout, intrinsic safety, etc. [1]

Heat exchanger design handbook

This book is AN cyclopedia of correlations, style procedures, plans, diagrams, tables, property lists, and shortcuts. Topics coated include: device theory; hydraulics and warmth transfer; thermal and hydraulic style of warmth exchangers; mechanical style of warmth exchangers; and physical properties. [2]

Simultaneous optimization models for heat integration—II. Heat exchanger network synthesis

In this paper, a mixed number nonlinear programming (MINLP) model is conferred which may generate networks wherever utility value, money handler aras and choice of matches are optimized at the same time. The projected model doesn’t accept the idea of fastened temperature approaches (HRAT or EMAT), nor on the prediction of the pinch purpose for the partitioning into subnetworks. The model is predicated on the stage-wise illustration introduced partly I of this series of papers, wherever at intervals every stage, potential exchanges between every hot and cold stream will occur. The simplifying assumption on equal combining to calculate heat transfer space for stream splits permits the possible area to be outlined by a group of linear constraints. As a result, the model is powerful and may be solved  with relative ease. Constraints on the network style that modify its structure, e.g. no stream splits, verboten matches, needed and restricted matches additionally because the handling of multiple utilities are often simply enclosed within the model. [3]

Ceramic–metal composites for heat exchangers in concentrated solar power plants

The potency of generating electricity from heat mistreatment targeted solar energy plants (which use mirrors or lenses to concentrate daylight so as to drive heat engines, sometimes involving rotary engines) could also be appreciably multiplied by in operation with higher turbine water temperatures, however this might need improved device materials. By in operation turbines with water temperatures on top of one,023 kelvin mistreatment closed-cycle aggressive critical carbonic acid gas (sCO2) recompression cycles, rather than mistreatment standard (such as subcritical steam Rankine) cycles with water temperatures below 823 kelvin1,2,3, the relative heat-to-electricity conversion potency could also be multiplied by quite twenty per cent. [4]

Comparative Study on Dangers of Corrosion in Marine Heat Exchanger Performance Using Cast Steel C-1030 and Copper C-642

This analysis was undertaken to relatively confirm the consequences of corrosion in forged steel C-1030 and copper C-642 used as hand-picked materials in marine device style. forged steel C-1030 immersed in fresh at zero.0003M once twenty one (21) days (0.0567yr) gave corrosion rise from zero.0493 mmpy, 0.0555 mmpy to zero.0656 mmpy whereas copper C-642 at zero.000004M in fresh knowledgeable no corrosion rise for the first and ordinal week, though a corrosion increase of zero.0006 mmpy was disclosed at the third week of immersion. conjointly results at zero.0015M of forged steel C-1030 gave corrosion increase from zero.0365 mmpy to zero.0617 mmpy whereas copper C-642 gave corrosion rise from zero.0351 mmpy to zero.0409 mmpy. Results at zero.002M of brine gave corrosion rise from zero.0369 mmpy to zero.0452 mmpy and zero.0351 mmpy to zero.0363 mmpy for forged steel C-1030 and copper C-642. [5]

Reference

[1] Linnhoff, B. and Hindmarsh, E., 1983. The pinch design method for heat exchanger networks. Chemical Engineering Science, 38(5), (Web Link)

[2] Thulukkanam, K., 2013. Heat exchanger design handbook. CRC press. (Web Link)

[3] Yee, T.F. and Grossmann, I.E., 1990. Simultaneous optimization models for heat integration—II. Heat exchanger network synthesis. Computers & Chemical Engineering, 14(10), (Web Link)

[4] Ceramic–metal composites for heat exchangers in concentrated solar power plants
M. Caccia, M. Tabandeh-Khorshid, G. Itskos, A. R. Strayer, A. S. Caldwell, S. Pidaparti, S. Singnisai, A. D. Rohskopf, A. M. Schroeder, D. Jarrahbashi, T. Kang, S. Sahoo, N. R. Kadasala, A. Marquez-Rossy, M. H. Anderson, E. Lara-Curzio, D. Ranjan, A. Henry & K. H. Sandhage
Nature volume 562, (Web Link)

[5] A. Idiapho, C., E. Odinikuku, W. and K. Idiapho, O. (2018) “Comparative Study on Dangers of Corrosion in Marine Heat Exchanger Performance Using Cast Steel C-1030 and Copper C-642”, Current Journal of Applied Science and Technology, 32(1), (Web Link)

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