Relevant bibliographies by topics / Plate evaporator

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  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
  6. Reports

Academic literature on the topic 'Plate evaporator'

Author: Grafiati
Published: 4 June 2021
Last updated: 15 February 2022

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Journal articles on the topic "Plate evaporator"

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Gray, R. M. "The plate evaporator." Journal of Applied Chemistry and Biotechnology 21, no. 12 (April 25, 2007): 359–62. http://dx.doi.org/10.1002/jctb.5020211205.

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Zhou, Shu Zhang, Rui Kong, Min Qiang Pan, Qiao Xia Yuan, and Ting Bo Hou. "Effects of Microstructure Types on the Evaporation Efficiency of Electrically Heated Micro Evaporator." Advanced Materials Research 655-657 (January 2013): 1123–26. http://dx.doi.org/10.4028/www.scientific.net/amr.655-657.1123.

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In this work, a laminated microstructure-plate electrically heated micro evaporator was proposed. The effects of microstructure types on the evaporation efficiency of electrically heated micro evaporator under different input voltage values and flow rates of water were investigated. It was indicated that the triangular microstructure plate presented the best evaporation efficiency regardless of the change of input voltage and feed flow rate. The nonuniform-distributed microchannel plate presented better evaporation performance than that of uniform-distributed microchannel plate, while the triangular microstructure plate presented higher evaporative performance than that of rectangular microstructure plate.
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Zavargo, Zoltan, Aleksandar Jokic, Bojana Prodanic, Jasna Grbic, and Rada Jeftic-Mucibabic. "Performance of falling film plate evaporators in reconstructed multiple-effect evaporation station in sugar factory." Thermal Science 10, no. 4 (2006): 55–61. http://dx.doi.org/10.2298/tsci0604055z.

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General trend of free trade in regional level as well as in the direction of European Union has motivated sugar factories located in Serbia to invest into technologies that are more efficient in order to make their products more competitive at the markets in Europe. The aim of this work was to evaluate effects of falling film plate evaporators on the energy consumption of evaporation plant, as well as to validate performance of this type of evaporators. It was found that this type of evaporator decreased energy requirements and in the same time evaporation process was more effective due to high values of heat transfer coefficients. .
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Suhas, Upadhyaya, and Gumtapure Veershetty. "PARAMETRIC INVESTIGATION OF ORGANIC RANKINE CYCLE EVAPORATOR FOR LOW TEMPERATURE APPLICATIONS." Journal of Engineering Research [TJER] 16, no. 2 (December 23, 2019): 130. http://dx.doi.org/10.24200/tjer.vol16iss2pp130-141.

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The present work deals with the development of thermodynamic model of low temperature basic Organic Rankine Cycle (ORC) system and a chevron plate heat exchanger evaporator sub-model using Engineering Equation Solver (EES). Work output is evaluated using the ORC thermodynamic model, while the evaporator sub-model calculates the total surface area of the heat exchanger. Using these mathematical models, the effect of evaporation pressure, expander inlet temperature and pinch point temperature difference (PPTD) on the network output and evaporator cost are studied. In addition to this, the effect of plate spacing and plate width of chevron plate heat exchanger on pressure drop and evaporator cost are analyzed in detail. Finally, thermodynamic and geometric optimization is carried out using genetic algorithm to identify the optimum parameters at which the network output is maximized and pressure drop in the evaporator is minimized. Sensitivity analysis showed that optimum evaporator pressure existed at which network output is maximum. Thermodynamic optimization showed that work output was maximum (5.03 kW) at evaporator pressure of 5.77 bar. No improvement in the work output was seen with increase in PPTD and expander inlet temperature. Increase in plate width and plate spacing led to increase in evaporator cost and decrease in pressure drop.
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Oliveira, R. N., R. V. M. Reis, R. N. N. Koury, and L. Machado. "TRANSIENT MODEL OF A STATIC EVAPORATOR FOR AN AIR-WATER HEAT PUMP." Revista de Engenharia Térmica 10, no. 1-2 (December 31, 2011): 07. http://dx.doi.org/10.5380/reterm.v10i1-2.61944.

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The increasing demand of electric energy in Brazil, allied to the great consumption in rush hour, has stimulated the study of water heating systems that substitute the electric shower. One of these equipments, the solar collector, is the most viable, with the best cost-benefits relation, because Brazil is a tropical country. A heat pump can be used as a support to solar collectors in places where the climatic conditions and/or the lack of available area of solar collection limit the use of the system. One way to improve this heat pump would be the substitution of its conventional evaporator for a static evaporator. This evaporator is constituted of a metallic plate with conformed canals, inside of which the coil is fixed through which the refrigerator cooling of the heat pump flows. The objective of this paper is the development of a mathematical model in transient regimen to simulate the static evaporator operation of an air-water heat pump. Some simulations had been carried through, that had allowed testing geometric parameters of the system, materials for the pipes and plates and different weather conditions. These computational tests had indicated that the model represents a good tool to project static evaporators.
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Engelhorn, H. R., and A. M. Reinhart. "Investigations on heat transfer in a plate evaporator." Chemical Engineering and Processing: Process Intensification 28, no. 2 (October 1990): 143–46. http://dx.doi.org/10.1016/0255-2701(90)80011-s.

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Adoh, Lucky Ugochukwu, and Ola Victor Damilare. "THE PERFORMANCE EVALUATION OF A PLATE TYPE EVAPORATOR AND A SHELL AND TUBE EVAPORATOR." International Journal of Technical Research & Science 04, no. 09 (September 15, 2019): 1–8. http://dx.doi.org/10.30780/ijtrs.v04.i09.001.

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Merzah, Basil Noori, Majid H. Majeed, and Fouad A. Saleh. "Numerical study of flat plate solar collector performance with square shape wicked evaporator." Al-Qadisiyah Journal for Engineering Sciences 12, no. 2 (June 30, 2019): 90–97. http://dx.doi.org/10.30772/qjes.v12i2.592.

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In this work, a system of a heat pipe is implemented to improve the performance of flat plate solar collector. The model is represented by square shape portion of the evaporator section of wicked heat pipe with a constant total length of 510 mm, and the evaporator section inclined by an angle of 30o. In this models the evaporator, adiabatic and condenser lengths are 140mm, 140mm, and 230mm respectively. The omitted energies from sunlight simulator are 200, 400, 600, 800 and 1000 W/m2 which is close to the normal solar energy in Iraq. The working fluid for all models is water with fill charge ratio of 240%. The efficiency of the solar collector is investigated with three values of condenser inlet water temperatures, namely (12, 16 and 20o C). The numerical result showed an optimum volume flow rate of cooling water in condenser at which the efficiency of collector is a maximum. This optimum agree well with the ASHRAE standard volume of flow rate for conventional tasting for flat plate solar collector. When the radiation incident increases the thermal resistance of wicked heat pipe is decreases, where the heat transfer from the evaporator to condenser increases. The numerical results showed the performance of solar collector with square shape evaporator greater than other types of evaporator as a ratio 15 %.
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Pacheco, C. R. F., and L. S. M. Frioni. "Experimental results for evaporation of sucrose solution using a climbing/falling film plate evaporator." Journal of Food Engineering 64, no. 4 (October 2004): 471–80. http://dx.doi.org/10.1016/j.jfoodeng.2003.11.014.

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Ohara, Junichi. "Evaporation Heat Transfer of HFO-1233zd (E) in Falling Film Type Plate-fin Evaporator." Marine Engineering 56, no. 3 (May 1, 2021): 373–78. http://dx.doi.org/10.5988/jime.56.373.

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Dissertations / Theses on the topic "Plate evaporator"

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Claesson, Joachim. "Thermal and hydraulic performance of compact brazed plate heat exchangers operating as evaporators in domestic heat pumps." Doctoral thesis, KTH, Energiteknik, 2005. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-110.

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This thesis investigates the performance of compact brazed plate heat exchangers (CBE) operating as evaporator in heat pump applications. The thesis, and the performances investigated, has been divided into three main sections; One zone evaporator performance; Two zone evaporator performance; and finally Local performance. The 'One zone evaporator performance' section considers the evaporator as one "black box". It was found that "approaching terminal temperatures" were obtained as low overall heat flux is employed. It was also found that the total area averaged film heat transfer coefficient was affected by changes of the brine mass flow rate. This indicates that the widespread Wilson plot method may not be used to determine flow boiling heat transfer coefficients. Further, it seems that co- and counter-current flow configuration performs equally well if the superheat is kept low. A numerical simulation of the above investigations indicates that a nucleate boiling model better predicts the performance compared to a convective evaporation model. Finally, the significant impact of the refrigerant inlet distributor design was illustrated using several CBEs with different inlet geometries but with identical heat transfer surfaces. The 'Two zone evaporator performance section' considers the evaporator as two "black boxes", i.e. the boiling and superheating boxes. Thermochromic liquid crystals (TLC) was used to determine the boiling heat transfer area. The resulting flow boiling heat transfer coefficient was found to correlate with heat flux. The superheated heat transfer area was then estimated using single phase correlations. It was observed that the TLC measurements and the predicted superheating area did not agree. Possible causes for this deviation were discussed. The most likely explanation found was the presence of mist flow at the higher vapor quality range in the boiling section of the evaporator. The 'Local Performance' section considers local pressure drop and flow boiling heat transfer. The Chisholm parameter was found not to be a constant and was found to correlate well with the kinetic energy per volume. The resulting predictions of the pressure drop were better than ± 10%. The resulting local flow boiling heat transfer coefficient, at different vapor quality, mass flux and heat flux, was compared to flow boiling correlations available in the literature. It was found that the saturated nucleate pool boiling correlation by Cooper (1984) and narrow channel flow boiling correlations (Tran 1999, Lazarek and Black 1982) predicted the experimental data better than several traditional flow boiling correlations, developed for larger tubes.
QC 20100524
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Björk, Erik. "Energy Efficiency Improvements in Household Refrigeration Cooling Systems." Doctoral thesis, KTH, Tillämpad termodynamik och kylteknik, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-93061.

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This thesis is based on eight articles all related to the characteristics of the cooling system and plate evaporator of a household refrigerator. Through these articles, knowledge is provided that can be used to increase the operational efficiency in household refrigeration. Papers A, B and C focus on heat transfer and pressure drop in a commonly used free convection evaporator – the plate evaporator. Applicable correlations are suggested on how to estimate the air side heat transfer, the refrigerant side pressure drop and the refrigerant side heat transfer. Papers D, E and F hold a unique experimental study of the refrigerant charge distribution in the cooling system at transient and steady state conditions. From this cyclic losses are identified and estimated and ways to overcome them are suggested. In paper G the topic “charging and throttling” is investigated in an unparalleled experimental study based on more than 600 data points at different quantities of charge and expansions device capacities. It results in recommendations on how to optimize the capillary tube length and the quantity of refrigerant charge. Finally, Paper H holds a thermographic study of the overall cooling system operating at transient conditions. Overall, a potential to lower the energy use by as much as 25 % was identified in the refrigerator studied. About 10 % was found on the evaporator’s air side. 1-2 % was identified as losses related to the edge effect of the evaporator plate. About 8 % was estimated to be cyclic losses. About 5 % was found in cycle length optimization.  It is believed that most of these findings are of general interest for the whole field of household refrigeration even though the results come from one type of refrigerator. Suggestions of simple means to reduce the losses without increasing the unit price are provided within the thesis

QC 20120411

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SOTOMAYOR, PAUL ORTEGA. "MODELING OF EVAPORATORS TYPE LAMINATED PLATE FOR AUTOMOTIVE AIR CONDITIONING SYSTEMS." PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 2008. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=12431@1.

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CONSELHO NACIONAL DE DESENVOLVIMENTO CIENTÍFICO E TECNOLÓGICO
É desenvolvido um modelo de simulação de evaporadores automotivos tipo placa (Brazed Laminated Plate), para o resfriamento de ar úmido. O modelo estudado adota o método de análise local, onde o trocador de calor é dividido em um número de elementos de troca de calor, para os quais as equações de troca de calor e de conservação de energia são aplicadas. Para efeito da determinação do coeficiente local de troca de calor e do fator de atrito, o modelo considera duas regiões na troca de calor. Pelo lado do refrigerante foi considerada uma região bifásica (líquido - vapor) e outra, de superaquecimento (vapor). No lado do ar têm-se duas condições: com a superfície do evaporador seca ou molhada. Para cada zona foram levados em conta diferentes mecanismos de transferência de calor. Também foi estudada a queda de pressão do lado do refrigerante e do lado do ar, utilizando, para tal, as respectivas correlações de queda de pressão. Para a simulação foram consideradas definidas as condições de entrada dos fluídos e a geometria do evaporador. Um programa foi desenvolvido em FORTRAN para calcular os estados termodinâmicos de saída dos dois fluidos. As propriedades do refrigerante foram calculadas utilizando o software REFPROP versão 7.0, desenvolvido no NIST, EUA, o que permitiu a modelagem do trocador de calor operando com uma vasta gama de refrigerantes. Novos refrigerantes, H e 1234yf, ainda não constantes da biblioteca REFPROP v07, foram também testados. Os resultados da simulação foram comparados com dados experimentais disponíveis.
A simulation model for automotive brazed laminate plate evaporators, for humid air cooling, was developed. The model adopts the local analysis method, where the heat exchanger is divided into a number of elemental control volumes, for which the equations of heat transfer and conservation of energy are applied. In order to determine the local heat transfer coefficient and friction factor, the model considers different regions in the heat exchanger. In the refrigerant side, two-phase or superheated flows were considered. In the air side, dry or wet surface conditions were modeled. For each zone different mechanisms of heat transfer and pressure drop were taken in account. The simulation model assumed prescribed evaporator geometry and inlet conditions for both fluids. A computer program was developed in FORTRAN to calculate overall thermodynamic outlet states of both fluids. Refrigerant properties were calculated using the software REFPROP version 7.0, developed by the NIST, U.S.A.. It allowed the modeling of the evaporator, operating with a vast range of refrigerants. New refrigerants, fluids H and 1234yf, (still not available in REFPROP v07 libraries) also were tested. The results of the simulation were compared with available experimental data.
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Bedřich, Miroslav. "Plynová tepelná čerpadla se spalovacím motorem." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2014. http://www.nusl.cz/ntk/nusl-231284.

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The aim of this Diploma thesis is a description of gas heat pump (GHP) technology and the possibility of their usage in real life. Also units from the major manufactures of GHP units in the Czech Republic and abroad are evaluated from technical and economical point of view. The thesis as well includes a part where is decided if it is better to further develop GHP units with higher or lower performance. In the last part of thesis are cooling circuits designed for both lower and higher performance, than performance of existing GHP unit Polo 100. As a result, the units with higher performance are more perspective. Therefore heat plate exchangers, which serve as a condenser and an evaporator, are designed for unit with higher performance.
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Down, Edward M. "Enhancement of plate heat exchanger performance using electric fields." Thesis, City University London, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.339994.

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Claesson, Joachim. "Thermal and hydraulic performance of compact brazed plate heat exchangers operating as evaporators in domestic heat pumps /." Stockholm : Division of Applied Thermodynamics and Refrigeration, Royal Institute of Technology, 2004. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-110.

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Baummer, Thomas Buchanan. "A self-contained cold plate utilizing force-fed evaporation for cooling of high-flux electronics." College Park, Md.: University of Maryland, 2007. http://hdl.handle.net/1903/7795.

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Thesis (M.S.) -- University of Maryland, College Park, 2007.
Thesis research directed by: Dept. of Mechanical Engineering. Title from t.p. of PDF. Includes bibliographical references. Published by UMI Dissertation Services, Ann Arbor, Mich. Also available in paper.
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Chalidapongse, Prasai. "Steady-state and dynamic behaviour of plate-fin-tube direct expansion evaporators when using a zeotropic refrigerant mixture." Thesis, University College London (University of London), 2008. http://discovery.ucl.ac.uk/1444141/.

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Both steady-state and dynamic simulations of the operation of plate-fin-tube air coolers, under dry and wet conditions, and also of themostatic expansion valve (TEV) controlled coils under dry condition, were carried out. The investigation aimed at improving our understanding as how the operation behaviour of the cooler coils, under various coil conditions, was influenced by the use of a ternary refrigerant mixture (R407C) when compared to a pure refrigerant (R134a). Based on practical coil configurations, a distributive computer model was implemented, with governing equations for air and refrigerant sides and for tube walls set up for individual coil elements. For the TEV, equipped with an external equalizer, energy and force equations were set up. To compare the two refrigerants, a reference scheme, obtained based on the steady state simulation, was set up: the same air coil-inlet conditions, the same refrigerant mass flow rates and vapour qualities at the coil inlets, and the same refrigerant temperatures at the coil outlet. The dynamic simulation was based on having a step change in the coil inlet dry-bulb (DB) temperature. The analysis and discussion focussed on the temperature gliding and many other inter-related parameters/factors, e.g. the heat transfer coefficient (HTC), the coil arrangement, the refrigerant superheat and the refrigerant type. It was observed that for steady-state, the temperature gliding affected the spatial gradient of the temperature and humidity ratio of the tube-wall, the outlet dry-bulb temperature of the coil-face row, and the row outlet humidity ratio (HR). The temperature glide, when combined with the refrigerant HTC and the coil arrangement, had a strong influence on the sensible and latent heat fluxes, i.e. suppressing the influence of other parameters such as the effective air-side heat transfer and mass transfer coefficients. For the coil dynamics, the refrigerant temperature gliding influenced the gradients of the time profiles of the DB temperature and HR at the coil-outlet tubes that were unaffected by the superheat. For the TEV-controllcd coils, only the temperature gliding-up of R407C, not the temperature drop associated with R134a, was shown to have an impact upon the rate of change of the superheat-initiation location. The combined effect of the temperature gliding and the HTC influenced the transit times between steady states of both the superheat-initiation location and external-equalizer pressure.
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Carlsson, Matthias. "Development and Characterization of Parallel-Plate Avalanche Counters for Nuclear Physics Experiments." Thesis, Uppsala universitet, Tillämpad kärnfysik, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-354818.

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Parallel-plate avalanche counters, PPACs, are commonly used to detect fission fragments. The PPAC detects them and mark (very accurately) the time of detection. Such measurements can be used to measure the neutron energy (via time-of-flight) to study neutron-induced fission.This project report provides a method that, together with the discussed improvements, allows the fabrication of good quality PPAC detectors. Several PPACs are manufactured and the electrodes are built from 0.9 µm thick mylar foils which are evaporated with a 40-80 nm thin layer of aluminum.The developed PPACs are characterized with well known radioactive Cf and Am sources (the source characterization also found in this report), and compared against each other. Additionally, the PPAC signal amplitude spectrum are found to follow theoretical expectations with regards to angular dependence, gas pressure and an applied electrode voltage.At a specific applied electrode voltage and range of gas pressures (3-9 mbar), the measured time resolutions are 2.24-1.38 ns. A trend is observed for finer time resolutions at higher gas pressures.
Parallel-plate avalanche counters, PPACs, används ofta för att detektera fissionsfragment. PPAC:en detekterar fragmenten med väldigt god tidsupplösning och således kan PPAC detektorer användas till att mäta neutron energier (mha. flygtidsmetoden), vilka uppmätts för att studera neutroninducerad fission.Det här projektet och den här rapporten beskriver en metod, med föreslagna förbättringar, som möjliggör tillverkning av PPAC detektorer av bra kvalitet. Under projektet har flera PPACs byggts med elektroder gjorda av 0.9 µm tunn mylar förångade med 40-80 nm aluminium. De tillverkade PPAC detektorerna är karaktäriserade med väl kända radioaktiva Cf- och Am-källor (dessa karaktäriseras även i den här rapporten). Detektorerna är sedan jämförda mot varandra och är funna att följa teoretiska förväntningar med avseende på vinkel-, gastryck- och pålagd elektrodspänningsberoende.Resultaten av projektet, som besvarar flera tidigare frågeställningar och bekräftar vissa antaganden, flyttar utsikten och förståelsen framåt för hur PPACs fungerar och vad forskarna kan uppnå med dem.
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Bakri, Zohra. "Contribution a l'etude du sechage par rayonnement infrarouge d'un film de peinture sur un substrat plat en verre." Paris, ENMP, 1988. http://www.theses.fr/1988ENMP0081.

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On determine la composition, la densite, les proprietes thermodynamiques (pression de saturation en fonction de la temperature, coefficient de diffusion, chaleur latente de vaporisation) et les proprietes radiatives de la peinture (spectre d'absorption, spectre de reflexion diffuse, coefficient d'emissivite globale). On etablit une correlation donnant la quantite de solvant a evaporer en fonction de la temperature du substrat. Par ailleurs, l'evolution des profils experimentaux de temperature a ete obtenue par resolution numerique des equations de transfert de chaleur, sous l'hypothese que, pour ce produit quasi homogene, la puissance d'evaporation est infime. Enfin, dans une approche simplifiee, on propose une equation permettant de decrire les profils de perte de masse en fonction de la temperature du substrat
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Books on the topic "Plate evaporator"

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Office, Energy Efficiency. Plate evaporator for process industries. London: Department of the Environment, 1993.

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Palmer, Rendel. Monitoring of a plate evaporator (1991): A demonstration with British Sugar plc : final report. [London]: Energy Efficiency Office, 1993.

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Evaporation and condensation heat transfer performance of flammable refrigerants in a brazed plate heat exchanger. Gaithersburg, MD: U.S. Dept. of Commerce, Technology Administration, National Institute of Standards and Technology, 2000.

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Taylor, D., and P. Brabazon. Heat Recovery and Cleaning In-place System for Falling Film Evaporators: Demonstration Project. European Communities / Union (EUR-OP/OOPEC/OPOCE), 1991.

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Book chapters on the topic "Plate evaporator"

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Scholl, Stephan. "Pillow Plate Heat Exchangers as Falling Film Evaporator or Thermosiphon Reboiler." In Innovative Heat Exchangers, 267–94. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-71641-1_9.

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Marvillet, Ch. "Welded Plate Heat Exchangers as Refrigerants Dry-Ex Evaporators." In Design and Operation of Heat Exchangers, 255–68. Berlin, Heidelberg: Springer Berlin Heidelberg, 1992. http://dx.doi.org/10.1007/978-3-642-84450-8_24.

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Sone, Yoshio, and Hiroshi Sugimoto. "Strong Evaporation from a Plane Condensed Phase." In Adiabatic Waves in Liquid-Vapor Systems, 293–304. Berlin, Heidelberg: Springer Berlin Heidelberg, 1990. http://dx.doi.org/10.1007/978-3-642-83587-2_26.

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Terekhov, Viktor I., and Maksim A. Pakhomov. "Laminar Mist Flows Over a Flat Plate with Evaporation." In Flow and Heat and Mass Transfer in Laminar and Turbulent Mist Gas-Droplets Stream over a Flat Plate, 9–11. Cham: Springer International Publishing, 2014. http://dx.doi.org/10.1007/978-3-319-04453-8_2.

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Zouaghi, Hiba, Souad Harmand, and Sadok Ben Jabrallah. "Recovery of Waste Farm After Methanation by Evaporation on Inclined Plate." In Exergy for A Better Environment and Improved Sustainability 1, 645–60. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-62572-0_42.

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Zouaghi, Hiba, Souad Harmand, and Sadok Ben Jabrallah. "Recovery of Farm Waste After Methanization by Evaporation on Inclined Plate." In Exergy for A Better Environment and Improved Sustainability 2, 283–97. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-62575-1_20.

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Müller, Arne, Anja-Elsa Polzin, and Stephan Kabelac. "Multi-stream Plate-and-Frame Heat Exchangers for Condensation and Evaporation." In Innovative Heat Exchangers, 167–87. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-71641-1_5.

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Forouzanmehr, Mohsen, Kazem Reza Kashyzadeh, Amirhossein Borjali, Mosayeb Jafarnode, and Mahmoud Chizari. "Effects of CrN/TiN Coatings on Interfacial Contact Resistance of Stainless Steel 410 Bipolar Plates in Fuel Cells." In Springer Proceedings in Energy, 133–39. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-63916-7_17.

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AbstractChallenge on energy resources exists, especially when the fossil resources are limited. Fuel cells, as an alternative replacement, can be used. Fuel cells with coated bipolar plates are the interest of this paper. Current research is concerned with the effects of CrN/TiN coatings on interfacial contact resistance (ICR). Stainless steel 410 was selected as a base metal, and the coating process was performed using chromium nitride and titanium nitride by cathodic arc evaporation method. It was found that the surface roughness and ICR values of CrN-coated sample are lower than the TiN-coated sample. The concluded that the CrN layer could be replaced with the TiN layer for better performance of bipolar plates.
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Onishi, Y., and H. Miura. "Propagation of Shock Waves Through a Gas Mixture Due to Strong Evaporation from a Plane Condensed Phase." In Shock Waves @ Marseille III, 119–24. Berlin, Heidelberg: Springer Berlin Heidelberg, 1995. http://dx.doi.org/10.1007/978-3-642-78835-2_19.

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Sone, Yoshio, Taku Ohwada, and Kazuo Aoki. "Evaporation and condensation of a rarefied gas between its two parallel plane condensed phases with different temperatures and negative temperature-gradient phenomenon — Numerical analysis of the boltzmann equation for hard-sphere molecules —." In Lecture Notes in Mathematics, 186–202. Berlin, Heidelberg: Springer Berlin Heidelberg, 1991. http://dx.doi.org/10.1007/bfb0091368.

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Conference papers on the topic "Plate evaporator"

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Kabelac, Stephan, and Sebastian W. Freund. "Local Two-Phase Flow Heat Transfer in Plate 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/ht2007-32051.

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Experimental results on quasi-local heat transfer coefficients for evaporation and condensation in PHEs related to vapor quality, mass flow rate and heat flux are presented in this paper. The data is obtained from a refrigeration cycle involving a PHE evaporator and a PHE condenser with a secondary fluid loop. The considered refrigerants are ammonia and R-134a. Evaporator and condenser are equipped with multiple thermocouples along the plates, which allow for the deduction of local heat flux and heat transfer coefficients on seven subsections of the plates. The data resolves for the first time the complete evaporation and condensation process along a plate channel and thus may contribute to the understanding of flow distribution and heat transfer mechanisms. The results show an increase of heat transfer coefficients with the vapor quality and the effects of mass flux and heat flux. The results conclude that parallel flow arrangement is advantageous for evaporation while counter flow enhances condensation heat transfer. Plates with low pitch angle chevron corrugations increase the evaporation. Comparisons with the limited available data from literature and various correlations indicate the need for further theoretical development. The data may be suitable for developing correlations of the thermo-hydraulic performance of plate evaporators and condensers as a function of flow, heat flux and plate parameters, which are not established in literature.
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Yun, James, Ed Kroliczek, John Cennamo, Sukhvinder Kang, and Walter Zimbeck. "Flat Plate Evaporator for Electronic Cooling." In 6th International Energy Conversion Engineering Conference (IECEC). Reston, Virigina: American Institute of Aeronautics and Astronautics, 2008. http://dx.doi.org/10.2514/6.2008-5670.

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Chiba, Tomohiro, Takao Kinoshita, Toshiharu Shinmura, Hisao Aoki, and Yuji Nakajima. "New Development of Plate and Fin Evaporator." In International Congress & Exposition. 400 Commonwealth Drive, Warrendale, PA, United States: SAE International, 1998. http://dx.doi.org/10.4271/981179.

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4

Löw, Christian, and Clemens Merten. "Strength Analysis of a Plate Type Evaporator." In ASME/JSME 2004 Pressure Vessels and Piping Conference. ASME, 2004. http://dx.doi.org/10.1115/pvp2004-2892.

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5

Conroy, C., Robert Mahorter, John Savchik, Triem Hoang, Tamara O'Connell, and John Rosenfeld. "Multiple Flat Plate Evaporator Loop Heat Pipe Demonstration." In 1st International Energy Conversion Engineering Conference (IECEC). Reston, Virigina: American Institute of Aeronautics and Astronautics, 2003. http://dx.doi.org/10.2514/6.2003-6047.

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6

Bierbaum, Mario, and Joachim Braasch. "Experiences of plate falling film evaporators at the back end of the evaporator station." In American Society of Sugarbeet Technologist. ASSBT, 2009. http://dx.doi.org/10.5274/assbt.2009.64.

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7

Zimbeck, Walter, Jared Chaney, Patricio Espinoza, Edward Kroliczek, David C. Bugby, and James Yun. "Ceramic Flat Plate Evaporator for Loop Heat Pipe Cooling of Electronics." In ASME 2005 Pacific Rim Technical Conference and Exhibition on Integration and Packaging of MEMS, NEMS, and Electronic Systems collocated with the ASME 2005 Heat Transfer Summer Conference. ASMEDC, 2005. http://dx.doi.org/10.1115/ipack2005-73124.

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Two-phase loops are extremely efficient devices for passively transporting heat over long distances with low temperature drop. The heat acquisition component of a two-phase loop, the evaporator, is commonly made from conventional metal materials (aluminum, copper, etc.) and has cylindrical geometry. Neither characteristic is optimally suited for close integration to common electronic or photonic heat sources, which generally have flat interfaces and are constructed from low thermal expansion coefficient (CTE) semiconductor materials. This paper describes the development of a ceramic flat plate evaporator for cooling processor chips in network computers used onboard Navy submarines. The unique requirements of submarines give added motivation for the advantages offered by two-phase loops. The ceramic flat plate evaporator is constructed of low CTE, high thermal conductivity material and thus enables a low thermal resistance interface between the heat source and the working fluid of the loop heat pipe. Alumina and aluminum nitride flat plate evaporators were integrated into a water-based two-phase loop and thermally tested to a heat flux of 30 W/cm2.
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8

Shikazono, Naoki, Yasushi Suehisa, Nobuhide Kasagi, and Hiroshi Iwata. "Modeling and Design of Micro-Grooved Flat Plate Evaporator." In ASME 3rd International Conference on Microchannels and Minichannels. ASMEDC, 2005. http://dx.doi.org/10.1115/icmm2005-75141.

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A micro-grooved flat plate evaporator is modeled and its heat transfer characteristics are investigated numerically and experimentally. A test model is developed for the vapor compression cycle evaporator, where pressure gradient drives the vapor and the liquid flow. In this study, the effect of pressure gradient is implicitly introduced through the Smith’s equation for predicting void fraction from given quality. The film thickness profile in the micro region near the contact line is obtained by solving the 4th order differential equation. Then the local heat flux is obtained by assuming that the heat conduction through the liquid is one dimensional in the wall normal direction. The shape of liquid-vapor interface is assumed to be a circular arc in the macro region, whose radius is directly linked to the void fraction. This curvature radius is used as the boundary condition for the micro region model at the micro-macro interface. Finally, the heat transfer coefficient on a micro-grooved flat plate evaporator is measured in a HFC134a experimental loop and compared with the numerical prediction. The present model assumptions are validated and assessed.
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9

Huang, Jianchang, Thomas J. Sheer, and Michael Bailey-McEwan. "Performance of Plate Heat Exchangers Used as Refrigerant Liquid-Overfeed Evaporators." In 2010 14th International Heat Transfer Conference. ASMEDC, 2010. http://dx.doi.org/10.1115/ihtc14-22095.

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The heat transfer and pressure drop characteristics of plate heat exchangers were measured, when used as refrigerant liquid over-feed evaporators. The three units all had 24 plates but with different chevron-angle combinations of 28°/28°, 28°/60°, and 60°/60°. R134a flowing upwards was used as the refrigerant, in a counter-current arrangement with water flowing on the other side. Heat transfer and pressure drop measurements were made over a range of mass flux, heat flux and corresponding outlet vapour fractions. The effect of system pressure on the evaporator performance was not evaluated due to the small range of evaporating temperature. Experimental data were reduced to obtain the refrigerant-side heat transfer coefficient and frictional pressure drop. The results for heat transfer showed a strong dependence on heat flux and weak dependence on mass flux and vapour fraction. Furthermore, the chevron angle had a small influence on heat transfer but a large influence on frictional pressure drops. Along with observations that were obtained previously on large ammonia and R12 plate evaporators, it is concluded that the dominating heat transfer mechanism in this type of evaporator is nucleate-boiling rather than forced convection. For the two-phase friction factor, various established methods were evaluated; the homogeneous treatment gives good agreement.
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10

Koyama, Kohei, Hirotaka Chiyoda, Hirofumi Arima, and Yasuyuki Ikegami. "Effect of Channel Geometry on Ammonia Boiling Heat Transfer of a Plate-Type Evaporator." In ASME 2013 Heat Transfer Summer Conference collocated with the ASME 2013 7th International Conference on Energy Sustainability and the ASME 2013 11th International Conference on Fuel Cell Science, Engineering and Technology. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/ht2013-17533.

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The ocean thermal energy conversion (OTEC) is attracted attention as one of the promising renewable energy. OTEC uses small temperature difference between surface and deep sea water. Plate-type heat exchangers, or evaporators, are usually used for OTEC to obtain vapor for electric generator. Ammonia is used for OTEC as a working fluid. It is important to improve thermal performance of an evaporator for the OTEC. Channel dimension is one of the important factors to improve heat transfer performance of an evaporator. In this study, the measurement and comparison of local heat transfer coefficient for three channels are experimentally performed. The experiments are conducted for a range of mass flux (5 and 7.5 kg/m2s), heat flux (10 to 25 kW/m2), and pressure (0.7 and 0.9 MPa). The results show that the heat transfer coefficient increases as decreases channel height. The modified emprical correlation for a plate-type evaporator is proposed.
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Reports on the topic "Plate evaporator"

1

Kedzierski, Mark A. Effect of inclination on the performance of a compact brazed plate condenser and evaporator. Gaithersburg, MD: National Institute of Standards and Technology, 1995. http://dx.doi.org/10.6028/nist.ir.5767.

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2

Palmer, Sheila C., W. Vance II Payne, and Piotr A. Domanski. Evaporation and condensation heat transfer performance of flammable refrigerants in brazed plate heat exchanger. Gaithersburg, MD: National Institute of Standards and Technology, 2000. http://dx.doi.org/10.6028/nist.ir.6541.

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