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. Reynolds number and Prandtl number were in the range of 50 ⩽ Re ⩽ 1000 and 3 ⩽ Pr ⩽ 7, respectively. 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. Learn about our remote access options, Northeastern University, Boston, Massachusetts. The pressure drop of condensing steam in the passage of plate heat exchangers has been investigated experimentally for a series of different Paraflow plates. Unfortunately, in open literature, a large difference among different authors occurs. A study of the effects of internal rib and channel geometry in rectangular channels. Pressure drop greatly increases the capital costs. The plate heat exchangers were used as over-feed refrigerant evaporators. Flow distribution and pressure drop in plate heat exchangers—I U-type arrangement. By continuing you agree to the use of cookies. Please check your email for instructions on resetting your password. Characteristics and Applications of Plate Type Heat Exchanger. The thermal and hydraulic performance Hence the pressure drop amounts to 16.2 kPa but the pressure drop I have calculated is 39.2 kPa. Copyright © 2020 Elsevier B.V. or its licensors or contributors. From a similar approach it was possible to correlate the overall pressure drop data for the heater for looped flow patterns. The resulting computer‐derived expression was found to predict series pressure drops in the apparatus to ± 10%. Accordingly, pressure drop increases too. It would be misleading to consider only cost aspect of the design of a heat exchanger. If you do not receive an email within 10 minutes, your email address may not be registered, Heat transfer, friction factor and exergy loss correlations were obtained according to the experimental results. American Institute of Chemical Engineers 120 Wall St., 23rd floor New York, NY 10005 1-800-AIChemE (1-800-242-4363) (203) 702-7660 Highlights Heat transfer and pressure drop were measured in plate heat exchanger evaporators. Pressure drop is a phenomenon with both positive and negative consequences for the heat transfer process. Pressure Drop In Plate Heat Exchanger - posted in Student: Hello friends,I am designing a plate and frame heat exchanger (PHE). 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. 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. 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. Part I. Number of times cited according to CrossRef: Yttrium segregation induced grain growth inhibition during recrystallisation in binary titanium alloys. Journal of the Korean Society of Marine Engineering. A Study on Heat Transfer Characteristics for Cross Flow Heat Exchanger of Staggered Arrangement. 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. Flow Profiles in the Plates of a Milk Pasteurizer. Improved refrigerant boiling correlations are reported … The experiments were carried out for a heat exchanger with single pass under condition of parallel and counter flow. We use cookies to help provide and enhance our service and tailor content and ads. Enter your email address below and we will send you your username, If the address matches an existing account you will receive an email with instructions to retrieve your username, © 2020 American Institute of Chemical Engineers, By continuing to browse this site, you agree to its use of cookies as described in our, Journal of Advanced Manufacturing and Processing, Environmental Progress & Sustainable Energy, I have read and accept the Wiley Online Library Terms and Conditions of Use. Overall pressure drop data on a commerical Chester‐Jensen Model HTF plate heater were available from several heat transfer studies reported previously. 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. Pressure drop. Copyright © 2008 Elsevier Ltd. All rights reserved. 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. Pressure drop, however, has not an importance for heat exchanger. Tranter has several in house plate heat exchanger sizing programmes for single phase and a range of specific two phase applications. Plate heat exchangers are very efficient equipments to exchange heat. Two different refrigerants were used and three different plate chevron angles. Excessive pressure drop is of course negative, because the flow must then be pushed through the BPHE using a lot of pump power. 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. Overall pressure drop data on a commerical Chester‐Jensen Model HTF plate heater were available from several heat transfer studies reported previously. In this study, experiments were conducted for laminar flow conditions. This paper presents the results of experimental studies to obtain pressure drop relationships useful in plate heater design. According to standard performance limits for Alpha-Laval PHE, the pressure drop is 30 kPa per NTU. 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 experimental correlations were compared with previous reported relationships. Use the link below to share a full-text version of this article with your friends and colleagues. Pressure drop utilization. Therefore exergy analysis and energy saving are very important parameters in the heat exchanger design. Plate heat exchangers (PHEs) play an important role in different technical fields, namely, in energetics, chemical industry, food industry, and others. Learn more. International Journal of Heat and Mass Transfer, Working off-campus? The NTU calculated is 0.54. To use PHE effectively, it is necessary to have correct data for pressure drop. Pressure drop in plate heat exchanger How big is the pressure drop in a plate heat exchanger ? Because of this, a thermodynamic optimization should be made between heat transfer and pressure drop.

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