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Статті в журналах з теми "Shell-and-plate heat exchanger"
1
Zhou, Yang Min, Chao Li, Li Li Xu, Si Yi Luo, and Chui Jie Yi. "Experimental Study of Self-Cleaning Plate Shell Heat Exchanger." Advanced Materials Research 339 (September 2011): 176–79. http://dx.doi.org/10.4028/www.scientific.net/amr.339.176.
Повний текст джерелаАнотація:
A heating experimental system using waste heat from washing Blast Furnace Slag (BFS) water is designed. The effect of corrugated angle, on the property of self-cleaning plate shell heat exchanger and the system typical working conditions was investigated. The results show that: the corrugated angle, as the key factor for the heat transfer property of self-cleaning plate shell heat exchanger, produces intense turbulent flows. It enhances the heat exchanger efficiency and reduces the scaling on the plate.
2
Chauhan, Jeel, Krish Panchal, Parth Mewada, and Sajid Shaikh. "Modified on Shell and Tube Heat Exchanger." International Journal for Research in Applied Science and Engineering Technology 10, no. 4 (April 30, 2022): 513–18. http://dx.doi.org/10.22214/ijraset.2022.41294.
Повний текст джерелаАнотація:
Abstract: Heat transfer is one of the most important processes in many industries. For this a heat exchanger is used. There are many different types of heat exchanger available that are double tube heat exchanger, Shell and Tube heat exchanger, tube in tube heat exchanger, Plate heat exchanger, Finned heat exchanger etc. In heat exchanger a fluid is used to cool another fluid which is a higher temperature, this is done either with direct contact between the fluids or indirect contact between the fluids with a surface in between. Most common type of heat exchanger used in industries is Shell and Tube heat exchanger due to its dimension flexibility which is it dose not have any dimension limit to it. As most of the Shell and Tube heat exchanger in the industries are of long lengths and also they are equipped with only single pass of the tube and with either parallel flow or counter flow. They are also equipped with different types of baffle plate at different angles and placing. In this project we have done construction and performance on Shell and Tube heat exchanger which is made in compact size and which is also equipped with parallel flow and counter flow. We have given multiple passing of the tube throughout the shell which results in better cooling of water. The cooling medium used in this project is water at normal room temperature. Because of the compact size of this heat exchanger it can be used in small spaces with availability of water like in small scale industries. Keywords: Shell and tube heat exchanger, heat transfer, multiple pass, compact size, rotameter, valves
3
Qu, Yan Peng, Wei Qiang Wang, Yan Liu, and Zhi Yong Xu. "Novel Multi-Stream Plate Exchanger under High Pressure-Structure and its Design Method." Advanced Materials Research 1061-1062 (December 2014): 658–61. http://dx.doi.org/10.4028/www.scientific.net/amr.1061-1062.658.
Повний текст джерелаАнотація:
The general characteristic of current plate heat exchangers is first summarized in this paper. A new plate exchanger of multi-stream under high pressure is proposed, which is composed of the plates with opening the gyroidal flow-trough along the radius and the shell, it has some advantages, such as simple structure, high efficiency and available under high pressure. We introduce the structure of the plate, the shell and the slotting types. In addition, the process calculation method of heat-transfer is given and the strength calculation method for the key components of the novel exchanger is also presented. According to the stress analysis to the plate wall with ANSYS software, we have proved the reliability of the calculation method.
4
Bull, James, James M. Buick, and Jovana Radulovic. "Heat Exchanger Sizing for Organic Rankine Cycle." Energies 13, no. 14 (July 14, 2020): 3615. http://dx.doi.org/10.3390/en13143615.
Повний текст джерелаАнотація:
Approximately 45% of power generated by conventional power systems is wasted due to power conversion process limitations. Waste heat recovery can be achieved in an Organic Rankine Cycle (ORC) by converting low temperature waste heat into useful energy, at relatively low-pressure operating conditions. The ORC system considered in this study utilises R-1234yf as the working fluid; the work output and thermal efficiency were evaluated for several operational pressures. Plate and shell and tube heat exchangers were analysed for the three sections: preheater, evaporator and superheater for the hot side; and precooler and condenser for the cold side. Each heat exchanger section was sized using the appropriate correlation equations for single-phase and two-phase fluid models. The overall heat exchanger size was evaluated for optimal operational conditions. It was found that the plate heat exchanger out-performed the shell and tube in regard to the overall heat transfer coefficient and area.
5
Kuschev, L., and N. Savvin. "THERMAL IMAGING STUDIES OF THE ORIGINAL HEAT EXCHANGER PLATE." Bulletin of Belgorod State Technological University named after. V. G. Shukhov 6, no. 1 (February 4, 2021): 38–45. http://dx.doi.org/10.34031/2071-7318-2021-6-1-38-45.
Повний текст джерелаАнотація:
A modern method for studying the temperature field of heated bodies is considered. The object under study is a corrugated heat exchange plate with an original geometry. Heat exchangers are one of the main types of process equipment in heat supply systems. The article presents a comparison of two main types of heat exchange equipment: shell-and-tube and plate devices. The FLIR i50 thermal imaging device is characterized. A comparison is made between a standard heat exchange plate and a corrugated plate with spherical recesses located linearly on the areas between the corrugations. The use of original plates can increase the efficiency of the heat exchange process due to increased turbulization of the coolant. The relationship between the true temperature of a heated body and the brightness temperature of a black body is established. Experimental studies are carried out, in result the value of the average temperature of the heated body is obtained. This value is necessary for further calculation of heat transfer coefficients, which, in turn, are decisive in calculating the main parameter that characterizes the efficiency of heat exchange equipment-the heat transfer coefficient. The use of thermal imaging is the original way to study heat transfer processes, allowing to show the real increase of heat transfer coefficient of a plate heat exchanger.
6
Aguilar Osorio, Rita, and Keith Cliffe. "Numerical Simulation of Heat Losses between a Partition Plate and the Wall of the Head of a Plastic Heat Exchanger." Defect and Diffusion Forum 297-301 (April 2010): 650–55. http://dx.doi.org/10.4028/www.scientific.net/ddf.297-301.650.
Повний текст джерелаАнотація:
For this research it was considered that the heat exchanger was affected by leakage in the head across the partition plate and the wall between the tube passes. Leakage was a problem in the plastic shell and tube heat exchanger, because it was difficult to seal the partition plate to the head of the exchanger. The material used for manufacturing the heat exchanger was polyvinylidene fluoride, PVDF. In order to predict the amount of flow leaking through the clearances of the tube passes, a numerical simulation was carried out using the computational Fluid Dynamics CFD Fluent Software. To obtain the percentage of the heat loss across the 4 tube passes, different clearance sizes between the partition plate and the wall of the head of the exchanger were analysed. For the smaller clearance size of 0.2 mm the heat transfer coefficient was reduced up to 15%. These results suggest that the flow mass bypassing the head between tube passes affect the results of the heat transfer coefficient and confirm the experimental observation, that its performance was affected by leakage between tube passes. This research served as an extension of the preliminary plastic heat exchanger design.
7
Kim, Kibong, Kang Sub Song, Gilbong Lee, Kichang Chang, and Yongchan Kim. "Single-Phase Heat Transfer Characteristics of Water in an Industrial Plate and Shell Heat Exchanger under High-Temperature Conditions." Energies 14, no. 20 (October 15, 2021): 6688. http://dx.doi.org/10.3390/en14206688.
Повний текст джерелаАнотація:
This study investigates the single-phase heat transfer, pressure drop, and temperature distribution of water in an industrial plate and shell heat exchanger (PSHE) under high-temperature conditions. In this experiment, the hot fluid flows downward on the plate side, while the cold fluid flows upward on the shell side. In the single-phase heat transfer experiment on water, the Nu is in the range of 7.85–15.2 with a Re from 1200 to 3200, which is substantially lower than that on the plate heat exchanger (PHE) studied previously. The decrease in the Nu is attributed to the reduced cross-sectional heat transfer area from the flow imbalance in the PSHE. As the Re increases, the pressure drop on the plate side increases more rapidly than that on the shell side because of the difference in the port pressure drop, flow direction, and flow position on the plate. When the Re is 2620, the pressure drops on the plate and shell sides are 52.5 kPa and 25.5 kPa, respectively, a difference of 51.4%. The temperature deviation on the circular plate increases as the Re decreases, especially between the edge and bottom of the plate because of uneven flow distribution on the plate.
8
Hyun-Seok, Noh, Cho Jong-Rae, and Song Seung-Hun. "Plate Pack Structural Integrity Analysis for Plate and Shell Heat Exchangers at High Temperatures and Pressures." Advances in Mechanical Engineering 12, no. 2 (February 2020): 168781401990124. http://dx.doi.org/10.1177/1687814019901244.
Повний текст джерелаАнотація:
Heat exchangers capable of withstanding high temperature and pressure are required to achieve increased thermal efficiency and compactness. A welded plate and shell heat exchanger, developed for applications involving pressures up to 150 bar and temperatures up to 600 °C, has exhibited advantages that allow a more wide use of heat exchangers. However, few studies have tested the structural integrity of the plate pack of this design. In this paper, the structural integrity of the heat transfer pack was tested using finite element analysis. Elastic and elastic-plastic models were applied for one set of heat transfer plates, while layers of two and four plates were used to verify the effect of the boundary conditions. The plate results were evaluated according to the ASME Boiler and Pressure Vessel Code, Section VIII Division 2. Finally, the function of the end plate in the plate packs was numerically studied.
9
Guo, Z., J. Shan, J. Li, and Levtsev. "Numerical Simulation of The Effect of Baffle on Heat Transfer Performance of Shell-and-Tube Heat Exchanger." Bulletin of Science and Practice 7, no. 1 (January 15, 2021): 248–53. http://dx.doi.org/10.33619/2414-2948/62/24.
Повний текст джерелаАнотація:
Baffle heat exchanger is widely used in various production activities because of its simple design and strong adaptability, so the structural optimization of baffle heat exchanger is of great significance to engineering practice. COMSOL software was used to simulate the shell-and-tube heat exchanger with baffles. By comparing and analyzing the simulation results, we find that the temperature field and pressure field of baffle plate are distributed evenly; The existence of baffles leads to the transverse flow of air, which increases the heat exchange area. Another advantage of using baffles is that vibration due to fluid flow can be reduced.
10
Abdel-Kawi, Osama, H. F. Elbakhshawangy, and Abdelfatah Abdelmaksoud. "Numerical and Experimental Performance Analysis for Different Types of Heat Exchangers." Journal of Mechanical, Civil and Industrial Engineering 3, no. 1 (February 24, 2022): 13–27. http://dx.doi.org/10.32996/jmcie.2022.3.1.3.
Повний текст джерелаАнотація:
Heat exchangers are devices whose primary responsibility is to transfer heat, typically from one fluid to another. In such applications, the heat exchangers can be parallel flow, crossflow, or counter flow. An essential part of any heat exchanger analysis is the determination of the effectiveness of the heat exchanger. In the present work, three different types of heat exchangers are investigated. Numerical and experimental performance analyses are applied. The main objective of the present work is to compare the effectiveness of each heat exchanger at different conditions. Six experimental investigations for Plate, shell & tube, and fluidized bed heat exchangers are executed. All experimental tests are reached to steady-state conditions. The results show that the counter flow plate heat exchanger has an effectiveness of 90% compared with the parallel flow of 60% effectiveness for working experimental conditions. Also, the fouling effect in decreasing heat transfer is cleared. In the present work, fouling decreases effectiveness from about 18% to about 4%. In addition, the effectiveness of the fluidized bed heat exchanger depends on the material used for the bed. Finally, the overall heat transfer coefficient is obtained and compared for all experimental tests, and it is directly proportional to the effectiveness of the heat exchanger. The FEHT program is used to get the temperature distribution in all types of present work heat exchangers.
Дисертації з теми "Shell-and-plate heat exchanger"
1
Fransson, Albin, and der Brug Peter van. "Systematic optimisation of an existing fuel oil preheating system : Facilitating replacement of 5000 cSt oil with 74 500 cSt." Thesis, Linnéuniversitetet, Institutionen för maskinteknik (MT), 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-96033.
Повний текст джерелаАнотація:
In order to increase the efficiency of a preheating system as temperatures increase, without using seawater as a coolant, an additional heat exchanger is required to be installed into the system. The purpose of the study is therefore to investigate how the temperatures of fuel oils can be increased while minimising the loss of energy and costs. The study was conducted in Karlshamn Power Station's (kvt) preheating system on Block 3. The study was conducted via Design for six sigma (DFSS) according to the primary design concept SG2 to guarantee the study's understanding of empirical data, and the development of solutions. The study resulted in two variants of heat exchangers where one is an identical Shell and Tube heat exchanger from Siljan Allards AB and the other one is a Supermax Shell and Plate heat exchanger from Tranter International.
2
Юзбашьян, Анна Петрівна. "Інтенсифікація теплообмінних процесів в технологіях переробки вуглеводнів з використанням нерозбірних пластинчастих теплообмінників". Thesis, НТУ "ХПІ", 2017. http://repository.kpi.kharkov.ua/handle/KhPI-Press/36144.
Повний текст джерелаАнотація:
Дисертація на здобуття наукового ступеня кандидата технічних наук за спеціальністю 05.17.08 – процеси та обладнання хімічної технології. – Національний технічний університет "Харківський політехнічний інститут" Міністерства освіти і науки України, Харків, 2018 р.
Дисертація присвячена вирішенню актуальної науково-практичної задачі підвищення інтенсифікації процесу теплопередачі в пластинчастих теплообмінних апаратах спеціальної нерозбірної конструкції, які можуть використовуватися для рекуперації тепла нафтохімічних підприємств. Подальшого розвитку, на основі аналогії переносу тепла та імпульсу, отримав підхід щодо прогнозування теплових та гідравлічних процесів у пластинчастих теплообмінних апаратах нерозбірної конструкції зі спеціально гофрованими квадратними та заокругленими пластинами. Отримано напівемпіричну залежність для визначення тепловіддачі в каналах пластинчастих теплообмінних апаратів з урахуванням збільшення площі поверхні за рахунок гофрування та врахуванням впливу числа Прандтля. Запропоновано фізико-математичну модель, яка базується на концепції "граничного забруднення" та дозволяє встановити термічний опір забруднень поверхні теплопередачі залежно від часу для різних швидкостей потоку і температури поверхні. Розглянуто можливість застосування і виконано порівняльний аналіз двох типів нерозбірних пластинчастих теплообмінних апаратів на позиціях підігріву сирої нафти. Встановлено, що за рахунок використання пластин з різною висотою гофрування по холодній та гарячій стороні в кожухо-пластинчастих теплообмінних апаратах досягнуто ефекту вирівнювання швидкостей в каналах і зменшенню площі поверхні теплопередачі апарату. Наведено можливість використання зайвого тепла нафтопереробного заводу для опалення та гарячого водопостачання з проектуванням двадцятьох індивідуальних теплових пунктів з нерозбірними теплообмінниками.Thesis for granting the Degree of Candidate of Technical sciences in Specialty 05.17.08 – "Processes and equipment of chemical technology". – National Technical University "Kharkiv Polytechnic Institute". Ministry of Education and Science of Ukraine, Kharkiv, 2018. The work is focused on solving the actual scientific and applied problem of the heat transfer intensification in plate heat exchangers of welded design for special applications, namely the heat recovery of flowsheets in refineries and chemical plants. The work suggests the new approaches towards estimation of heat and hydraulic behavior inside channels of plate heat exchangers with welded sealing. The proposed approach is based on the heat and momentum transfer analogy, and is applicable for corrugated plates of square and round shape. The semi-empirical correlation determining the heat transfer in the channel of plate heat exchangers, which enables to take into account the influence of the Prandtl number, is developed. A physical-and-mathematical model of fouling deposition during the time in welded plate heat exchangers is proposed based on the "threshold" fouling model concept, which allow the thermal resistance caused by fouling deposition to be predicted in time for different velocities of the flow and temperatures of eat carriers. The possible application conditions for crude oil pre-heat train are considered and welded plate heat exchangers of two types with minimal heat transfer surface area were designed for each operation position. The modification of shell-and-plate heat exchangers was proposed, applying the plates with different cross-section area of cold and hot channels, which can be used for the conditions when the flow rates for the heat carriers differs significantly. The case study of the waste heat utilization from refinery is considered. The utilization of the waste low-grade heat for the district heating and hot tap water supply is proposed, with the design of twenty individual heat sub-stations for each household using the welded plate heat exchangers.
3
Юзбашьян, Анна Петрівна. "Інтенсифікація теплообмінних процесів в технологіях переробки вуглеводнів з використанням нерозбірних пластинчастих теплообмінників". Thesis, НТУ "ХПІ", 2018. http://repository.kpi.kharkov.ua/handle/KhPI-Press/36091.
Повний текст джерелаАнотація:
Дисертація на здобуття наукового ступеня кандидата технічних наук за спеціальністю 05.17.08 – процеси та обладнання хімічної технології. – Національний технічний університет "Харківський політехнічний інститут" Міністерства освіти і науки України, Харків, 2018 р.
Дисертація присвячена вирішенню актуальної науково-практичної задачі підвищення інтенсифікації процесу теплопередачі в пластинчастих теплообмінних апаратах спеціальної нерозбірної конструкції, які можуть використовуватися для рекуперації тепла нафтохімічних підприємств. Подальшого розвитку, на основі аналогії переносу тепла та імпульсу, отримав підхід щодо прогнозування теплових та гідравлічних процесів у пластинчастих теплообмінних апаратах нерозбірної конструкції зі спеціально гофрованими квадратними та заокругленими пластинами. Отримано напівемпіричну залежність для визначення тепловіддачі в каналах пластинчастих теплообмінних апаратів з урахуванням збільшення площі поверхні за рахунок гофрування та врахуванням впливу числа Прандтля. Запропоновано фізико-математичну модель, яка базується на концепції "граничного забруднення" та дозволяє встановити термічний опір забруднень поверхні теплопередачі залежно від часу для різних швидкостей потоку і температури поверхні. Розглянуто можливість застосування і виконано порівняльний аналіз двох типів нерозбірних пластинчастих теплообмінних апаратів на позиціях підігріву сирої нафти. Встановлено, що за рахунок використання пластин з різною висотою гофрування по холодній та гарячій стороні в кожухо-пластинчастих теплообмінних апаратах досягнуто ефекту вирівнювання швидкостей в каналах і зменшенню площі поверхні теплопередачі апарату. Наведено можливість використання зайвого тепла нафтопереробного заводу для опалення та гарячого водопостачання з проектуванням двадцятьох індивідуальних теплових пунктів з нерозбірними теплообмінниками.Thesis for granting the Degree of Candidate of Technical sciences in Specialty 05.17.08 – "Processes and equipment of chemical technology". – National Technical University "Kharkiv Polytechnic Institute". Ministry of Education and Science of Ukraine, Kharkiv, 2018. The work is focused on solving the actual scientific and applied problem of the heat transfer intensification in plate heat exchangers of welded design for special applications, namely the heat recovery of flowsheets in refineries and chemical plants. The work suggests the new approaches towards estimation of heat and hydraulic behavior inside channels of plate heat exchangers with welded sealing. The proposed approach is based on the heat and momentum transfer analogy, and is applicable for corrugated plates of square and round shape. The semi-empirical correlation determining the heat transfer in the channel of plate heat exchangers, which enables to take into account the influence of the Prandtl number, is developed. A physical-and-mathematical model of fouling deposition during the time in welded plate heat exchangers is proposed based on the "threshold" fouling model concept, which allow the thermal resistance caused by fouling deposition to be predicted in time for different velocities of the flow and temperatures of eat carriers. The possible application conditions for crude oil pre-heat train are considered and welded plate heat exchangers of two types with minimal heat transfer surface area were designed for each operation position. The modification of shell-and-plate heat exchangers was proposed, applying the plates with different cross-section area of cold and hot channels, which can be used for the conditions when the flow rates for the heat carriers differs significantly. The case study of the waste heat utilization from refinery is considered. The utilization of the waste low-grade heat for the district heating and hot tap water supply is proposed, with the design of twenty individual heat sub-stations for each household using the welded plate heat exchangers.
4
Heber, Dominici Victoria Blanca. "Design Improvement of a Water Recirculation System for a Cooling Process in a Tobacco Manufacturing Plant." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2019.
Знайти повний текст джерелаАнотація:
In the industrial sector, it is possible to observe unexpected behaviours of processes, which were not anticipated in the design stage. Such is the case of a secondary cooling process existing within a tobacco manufacturing plant, which was initially designed to cool and recover clean process water with chilled water for posterior recirculation into the main cooling process. It has been observed that under the design flowrates the plate and frame heat exchanger where the process water is cooled is rapidly clogged by suspended solids coming from the main cooling process, resulting in both high maintenance costs and frequent product ion downtime due to necessary intervention for mechanical cleaning.
The aim of this thesis project is to evaluate and design process improvements providing sustainable solutions, reducing the operative costs existing nowadays and avoiding any damage on the plate and frame heat exchanger.
Any process design solution asks for a capital investment, which was also considered in the overall analysis of the alternatives within this study.
Within the evaluation of the possible modifications, solid/liquid separation was mostly studied, together with the selection and design of an appropriate heat exchanger for the given process. After a preliminary screening, a reduced number of alternatives were analysed in detail to assess their possible application. Few alternatives to solving the problem have been studied, in spite of having a wide variety of options.
5
Huang, Hung-Tang, and 黃鴻棠. "Experimental studies on plate and shell-and-tube heat exchangers." Thesis, 2017. http://ndltd.ncl.edu.tw/handle/c9w4ad.
Повний текст джерелаАнотація:
碩士國立高雄海洋科技大學
輪機工程研究所
105
The objective of the present study focuses on the heat transfercharacteristics on heat exchanger. The experi-mental setup equipped withcold/hot thermostat is built. Flow driven by circulating pump leads toplate or shell/tube heat exchanger and the recorded temperature isprocessed to obtain the overall heat transfer coefficients. Based on thegiven dimension and structure of heat exchanger and the results calculatedby available theoretical model, the primary outcome in comparing withmeasurement shows that the U-value increases with the increasing flowrate and it is remarkable especially for low flow rate zone. For plate heat exchanger, both of the measured and calculatedU-values increase with increasing flow rate. U-value slope in low flowrate is large and goes gently in high flow rate. Experiment trends aregenerally agreement with the theoretic model and the largest error isconfined within 15%. As for shell/tube one, the measured overall heattransfer coefficient of shell or tube side in low flow rate approaches toquantity near the one obtained from Kern method. In high flow rate,however, the overall heat transfer coefficients obtained from experimentsare close to that of simulations and averaged coefficient seems to reachlarger. Accordingly, it is a fact obtained from the exper-iment that theoverall heat transfer coefficient of plate heat exchanger is higher than thatof shell/tube one.
6
Tsai, Ching-Chun, and 蔡慶錞. "Thermal Analysis on Shell-and-Tube and Plate Heat Exchangers." Thesis, 2007. http://ndltd.ncl.edu.tw/handle/96497207410173263476.
Повний текст джерелаАнотація:
碩士國立臺灣海洋大學
機械與機電工程學系
95
Abstract In this paper, the thermal characteristics of heat exchangers are studied. The test facility includes two water tanks which were well insulated and the hot and cold streams were pumped to flow through the test heat exchanger. The flow rates and the temperature at the inlet and exit of hot and cold streams are recorded to calculate the overall heat transfer coefficient. Both of the shell-and-tube and plate heat exchangers are tested by varying flow rates at different operating temperatures. The results are made to compare with theoretical prediction. In the runs of plate heat exchanger, the overall heat transfer coefficient increases with flow rate especially in the low flow rate regime. The differences between theory and experiments are within 15%. During the analyses of shell-and-tube heat exchanger, the theories from Kern, Taborek and Bell-Delaware are all used to validate the data. Same as before, the flow rate increases overall heat transfer coefficient when the flow rate is small. The data at small flow rate is found to match those by Kern method. Whereas they agree well with Taborek’s prediction in the high flow rate region. Keywords： flow rate、heat exchanger、Plate、Shell-and-Tube、overall heat transfer coefficient.
Тези доповідей конференцій з теми "Shell-and-plate heat exchanger"
1
Taylor, Creed, Rhorn John, and Jason L. Williams. "Shell and Plate Feedwater Heater Prototype Test." In ASME 2014 Power Conference. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/power2014-32248.
Повний текст джерелаАнотація:
Westinghouse Electric Company and Tranter Inc. are collaborating to develop the modular, low-pressure horizontal shell and plate feedwater heater (SPFWH™) heat exchanger product. This design utilizes easily removable modules of welded heat transfer plates within a pressure vessel instead of traditional tubes as the pressure boundary and heat transfer interface between the steam and feedwater. Design advantages include improved long-term performance, inspection and maintenance access. Each SPFWH™ heat exchanger will be designed to meet all plant-specific requirements and is ASME Section VIII compliant. A prototype SPFWH™ heat exchanger design (herein called the prototype or test unit) was fabricated and tested to validate the functionality of the design features and benchmark the correlations used to predict the performance. The test was performed in the Tranter Inc. laboratory facility using full temperature and pressure steam conditions over a broad operating range typical of low pressure feedwater heaters. Heat transfer coefficient characteristics have been evaluated and the prototype test data shows good agreement with established empirical correlations and other industry research. These results indicate that the SPFWH™ heat exchanger design is a viable alternative to a shell-and-tube type heat exchanger due to the performance, compactness, modularity, and robustness of the new design.
2
Patel, Vipul, Rajesh Patel, and Vimal Savsani. "Novel Heat Exchanger Design With Rectangular Shell Geometry." In ASME 2014 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/imece2014-36834.
Повний текст джерелаАнотація:
Shell and Tube Heat Exchangers (STHE) are the most versatile type of heat exchangers used in industrial applications. The shape of Shell side of the traditional STHE’s is cylindrical for industrial applications. On one hand, STHE have some good features but on the other hand, it has some limitations due to the cylindrical geometry of the shell side. Some of these limitations are maximum two shell pass is possible as per TEMA layout, complete counter flow cannot be achieved, possibility of reverse heat transfer when number of tube passes are more, tubes are always laid parallel to shell and mounting over the entire length of shell is not possible when impingement plate provided etc. The objective of this study is to design a novel heat exchanger to overcome the limitations of traditional STHE. An experimental setup has been designed with rectangular shell side for STHE. The novel heat exchanger provides the flexibility to increase the number of shell pass and complete counter flow can be achieved due to rectangular geometry of shell side. For the same heat transfer rates, the proposed novel heat exchanger design provides better Effective Mean Temperature Difference (EMTD) and hence less surface area for heat transfer in comparison with traditional STHE. The experiments have been conducted on novel heat exchangers under different operation conditions of hot and cold fluids. The experiment results are compared with theoretical estimations of overall heat transfer coefficient and Log Mean Temperature Difference (LMTD) for traditional shell and tube heat exchangers for the same operation conditions. The results show that under the same operation conditions, the performance of novel heat exchanger is much better than traditional STHE.
3
Lambert, Michael A., and Benjamin J. Jones. "Plate Heat Exchanger Adsorber for a Regenerative Adsorption Heat Pump." In ASME 2004 International Mechanical Engineering Congress and Exposition. ASMEDC, 2004. http://dx.doi.org/10.1115/imece2004-61866.
Повний текст джерелаАнотація:
The state of the art in regenerative adsorption (solid-vapor) heat pumps achieved to date is a maximum Coefficient of Performance for Cooling (COPC) of 1.1 with 70% regeneration of waste heat. A number of configurations for the heat exchanger within the adsorbent bed have been investigated, including concentric tube, shell and tube, serpentine flat pipe, spiral flat pipe, and single-pass plate type. However, to date, compact (or multiple pass plate) heat exchangers for use with adsorbent beds have not been studied. This investigation explains the challenges involved in this application, and describes the design and analysis of three configurations of a compact heat exchanger for use with solid adsorbent. The prinicipal figure of merit affecting both coefficient of performance, COPC, and specific cooling power, SCP (W cooling per kg adsorbent), is defined as NTU divided by the ratio of non-adsorbent (“dead”) to adsorbent (“live”) thermal masses. The best of the three configurations consists of thin adsorbent (zeolite) tiles epoxied to the heat exchanger plates (sheets) with screen wire pin fins in the oil passages to enhance heat transfer.
4
Song, Kang Sub, Junyub Lim, Sungho Yun, Junho Kwon, and Yongchan Kim. "Flow Boiling Characteristics of R245fa in a Plate and Shell Heat Exchanger." In International Conference of Fluid Flow, Heat and Mass Transfer. Avestia Publishing, 2018. http://dx.doi.org/10.11159/ffhmt18.174.
Повний текст джерела
5
Nasrabadi, Mehdi, and Ramin Haghighi Khoshkhoo. "Design of Fin Plate Heat Exchanger for Increasing Micro Turbine Efficiency and Introduction of Fin Plate Heat Exchanger Design Software (KhoshNasr) for this Purpose." In ASME 2008 Heat Transfer Summer Conference collocated with the Fluids Engineering, Energy Sustainability, and 3rd Energy Nanotechnology Conferences. ASMEDC, 2008. http://dx.doi.org/10.1115/ht2008-56114.
Повний текст джерелаАнотація:
A heat exchanger is a part of micro turbines, which can improve thermal efficiency of micro turbines up to 30 percent. Some important factors in design of heat exchangers are low cost, high efficiency, small size, low weight and high performance. In this paper, design of a heat exchanger with consideration of Iranian industry’s capability has been investigated. A survey of different types of gas to-gas heat exchangers is presented and then fin-tube heat exchanger, fin-plate heat exchanger, shell & tube heat exchanger and regenerator are designed. Also, the effect of thermo hydraulic parameters on the efficiency of the three heat exchangers is investigated. Effects of these heat exchangers on the efficiency of a 100 kW micro turbine are studied and the heat exchanger with the highest efficiency is selected. The algorithm for design and modeling of the selected heat exchanger is then presented. After research on all types of heat exchangers, fin plate heat exchanger appeared to be the optimum choice for manufacturing in Iran industry. A new design program was written in MATLAB based on our suggested algorithm. Since there were some practical charts about heat transfer and pressure drop in design of the heat exchanger, all the existing experimental curves related to heat transfer and pressure of fins (required in the design of the heat exchanger) were converted to data (using “Image Processing” technique in MATLAB) and implemented in the design program.
6
Ishihama, Kiyoshi, Seiichi Matsumura, Takahisa Funabiki, Yukiko Kushima, Junichi Nakamura, Kenji Kusunoki, Isamu Hiwatashi, and Mana Iwaki. "Development of a Plate Heat Exchanger for High-Temperature and High-Pressure." In ASME 2013 Power Conference. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/power2013-98061.
Повний текст джерелаАнотація:
A gasketed plate heat exchanger that has a seal pressure of 6.5 MPa or more has been developed. This heat exchanger can be applied to heat exchangers (design temperature: 182°C, design pressure: 3.43 MPa) for the residual heat removal (RHR) systems of boiling water reactors (BWR). Practical use of gasketed plate heat exchangers under the condition of higher temperature and higher pressure has been achieved by developing a high-pressure-retaining plate and frame, as well as a heat- and radiation-resistant gasket. Various element tests related to strength and performance were conducted in the process of this development. A verification test using a prototype heat exchanger was also conducted, and pressure resistance, heat resistance, radiation resistance, endurance against thermal transients, and heat transfer performance have been confirmed. As a result of this development, gasketed plate heat exchangers can be applied for use under the condition of higher temperature and higher pressure, and various effects such as lower system flow, smaller footprint, easier maintenance, and lower cost for weld inspection are expected, compared to conventional shell & tube heat exchangers.
7
Park, Jae Hong, and Young Soo Kim. "Condensation Heat Transfer and Pressure Drop of R-134A in a Plate and Shell Heat Exchanger." In 1st International Energy Conversion Engineering Conference (IECEC). Reston, Virigina: American Institute of Aeronautics and Astronautics, 2003. http://dx.doi.org/10.2514/6.2003-5958.
Повний текст джерела
8
Song, Kang Sub, Junyub Lim, Junho Kwon, Changhyun Baek, and Yongchan Kim. "Evaporation Heat Transfer and Pressure Drop Characteristics of R245fa in a Plate and Shell Heat Exchanger." In The 3rd World Congress on Mechanical, Chemical, and Material Engineering. Avestia Publishing, 2017. http://dx.doi.org/10.11159/htff17.157.
Повний текст джерела
9
Wilson, Merrill A., Charles Lewinsohn, James Cutts, Yitung Chen, and Valery Ponyavin. "Viability of Ceramic High Temperature Heat Exchangers in NGNP Applications." In 16th International Conference on Nuclear Engineering. ASMEDC, 2008. http://dx.doi.org/10.1115/icone16-48760.
Повний текст джерелаАнотація:
The recent developments in the energy industry have kindled renewed interest in producing energy more efficiently. This has motivated the development of higher temperature cycles and their associated equipment. In this paper we will discuss several design configurations coupled with the inherent properties of preferred ceramic materials to assess the viability and design reliability of ceramic heat exchangers for next generation high temperature heat exchangers. These analyses have been extended to conceptually compare the traditional shell and tube heat exchanger with shell and plate heat exchangers. These analyses include hydrodynamic, heat transfer, mechanical stress and reliability models applicable to an Intermediate Heat Exchanger (IHX) and Process Coupling Heat Exchangers. It was found that ceramic micro-channel heat exchanger designs proved to have the greatest reliability due to their inherent mechanical properties, minimal thermo-mechanical stresses while improving the performance efficiency in a compact footprint.
10
Wilson, Merrill A., Charles Lewinsohn, and James Cutts. "Design Considerations for High Temperature, Ceramic Heat Exchangers." In ASME/JSME 2007 Thermal Engineering Heat Transfer Summer Conference collocated with the ASME 2007 InterPACK Conference. ASMEDC, 2007. http://dx.doi.org/10.1115/ht2007-32229.
Повний текст джерелаАнотація:
The recent developments in the energy industry have kindled renewed interest in producing energy (alternative fuels and electricity) more efficiently. This has motivated the development of higher temperature cycles and their associated equipment. In this paper we will discuss several design configurations coupled with the inherent properties of preferred ceramic materials to assess the viability and design reliability of ceramic heat exchangers for next generation high temperature heat exchangers. These analyses have been extended to conceptually compare the traditional shell and tube heat exchanger with shell and plate heat exchangers. These analyses include hydrodynamic, heat transfer, mechanical stress and reliability models. It was found that ceramic micro-channel heat exchanger designs proved to have the greatest reliability due to their inherent mechanical properties, minimal thermo-mechanical stresses while improving the performance efficiency in a compact footprint.