These individual losses were combined into an expression for overall pressure drop for a series plastic plate pack having any number of plates and employing any fluid. Copyright © 2020 Elsevier B.V. or its licensors or contributors. High maintenance costs increase total cost during the services life of heat exchanger. and you may need to create a new Wiley Online Library account. Heat transfer, friction factor and exergy loss correlations were obtained according to the experimental results. Please check your email for instructions on resetting your password. The experimental correlations were compared with previous reported relationships. By continuing you agree to the use of cookies. Working off-campus? Plate heat exchanger manufacturers offer a wide range of products and all of them have different characteristics in terms of pressure drop and heat transfer performance. International Journal of Heat and Mass Transfer, https://doi.org/10.1016/j.ijheatmasstransfer.2008.07.052. Pressure Drop In Plate Heat Exchanger - posted in Student: Hello friends,I am designing a plate and frame heat exchanger (PHE). Pressure drop is a phenomenon with both positive and negative consequences for the heat transfer process. A plastic prototype of a commercial model (Chester‐Jensen) exchanger was fabricated and used to obtain entrance, exit, crossover, ribbed section, and overall pressure drops as a function of velocity with water as the fluid. Plate heat exchangers (PHEs) play an important role in different technical fields, namely, in energetics, chemical industry, food industry, and others. Learn more. Therefore exergy analysis and energy saving are very important parameters in the heat exchanger design. Pressure drop. Journal of the Korean Society of Marine Engineering. Improved refrigerant boiling correlations are reported … American Institute of Chemical Engineers 120 Wall St., 23rd floor New York, NY 10005 1-800-AIChemE (1-800-242-4363) (203) 702-7660 www.aiche.org. Pressure drop greatly increases the capital costs. Excessive pressure drop is of course negative, because the flow must then be pushed through the BPHE using a lot of pump power. It is interesting to note that for a set of steam flow rates and given duty the steam pressure drop is higher when the liquid and steam are in countercurrent rather than cocurrent flow. In this study, the effects of surface geometries of three different type heat exchangers called as PHEflat (Flat plate heat exchanger), PHEcorrugated (Corrugated plate heat exchanger) and PHEasteriks (Asterisk plate heat exchanger) on heat transfer, friction factor and exergy loss were investigated experimentally. The data for series patterns were resolved by inserting overall pressure drop, physical properties of the fluid, and number of plate passes into the general form of the equation derived for plastic plates and by solving for a new set of constants. Recent studies on heat transfer in plate heat exchangers have pointed out the need for quantitative expressions for pressure drop in this type of apparatus. The resulting computer‐derived expression was found to predict series pressure drops in the apparatus to ± 10%. Two different refrigerants were used and three different plate chevron angles. We use cookies to help provide and enhance our service and tailor content and ads. This paper presents the results of experimental studies to obtain pressure drop relationships useful in plate heater design. Part I. From a similar approach it was possible to correlate the overall pressure drop data for the heater for looped flow patterns. To use PHE effectively, it is necessary to have correct data for pressure drop. Copyright © 2008 Elsevier Ltd. All rights reserved. Reynolds number and Prandtl number were in the range of 50 ⩽ Re ⩽ 1000 and 3 ⩽ Pr ⩽ 7, respectively. Characteristics and Applications of Plate Type Heat Exchanger. Pressure drop in plate heat exchanger How big is the pressure drop in a plate heat exchanger ? Highlights Heat transfer and pressure drop were measured in plate heat exchanger evaporators. The thermal and hydraulic performance This comes from the fact that the fluid flows in narrow channels in between plates and with a certain degree of turbulence that can be helped through the design of the plate. Learn about our remote access options, Northeastern University, Boston, Massachusetts. If you do not receive an email within 10 minutes, your email address may not be registered, ScienceDirect ® is a registered trademark of Elsevier B.V. ScienceDirect ® is a registered trademark of Elsevier B.V. Investigation of heat transfer and pressure drop in plate heat exchangers having different surface profiles. The plate heat exchangers were used as over-feed refrigerant evaporators. It would be misleading to consider only cost aspect of the design of a heat exchanger. Overall pressure drop data on a commerical Chester‐Jensen Model HTF plate heater were available from several heat transfer studies reported previously. The experiments were carried out for a heat exchanger with single pass under condition of parallel and counter flow. Pressure drop, however, has not an importance for heat exchanger. Plate heat exchangers are very efficient equipments to exchange heat. Unfortunately, in open literature, a large difference among different authors occurs. Flow distribution and pressure drop in plate heat exchangers—I U-type arrangement. Pressure drop utilization. A study of the effects of internal rib and channel geometry in rectangular channels. Number of times cited according to CrossRef: Yttrium segregation induced grain growth inhibition during recrystallisation in binary titanium alloys. Use the link below to share a full-text version of this article with your friends and colleagues. Flow Profiles in the Plates of a Milk Pasteurizer. Tranter has several in house plate heat exchanger sizing programmes for single phase and a range of specific two phase applications.
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