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Title:Tehnoekonomska primerjava ejektorske in absorpcijske toplotne črpalke : magistrsko delo
Authors:ID Špendl, Rok (Author)
ID Goričanec, Darko (Mentor) More about this mentor... New window
ID Urbancl, Danijela (Comentor)
Files:.pdf MAG_Spendl_Rok_2022.pdf (3,02 MB)
MD5: 21FDA2E0D82177EFD42C6F2BF4D1CFAA
PID: 20.500.12556/dkum/87a8822b-cbee-4616-a920-86484ae1b952
 
Language:Slovenian
Work type:Master's thesis/paper
Typology:2.09 - Master's Thesis
Organization:FKKT - Faculty of Chemistry and Chemical Engineering
Abstract:Zaradi velikih teženj po zniževanju stroškov in maksimalnem izkoristku energije je uporaba toplotnih črpalk v industrijskih procesih vse bolj prisotna. V magistrskem delu smo primerjali obratovalne lastnosti dobro poznane in raziskane absorpcijske toplotne črpalke z manj znano ejektorsko toplotno črpalko. V teoretičnem delu magistrskega dela je narejen pregled različnih toplotnih črpalk. Navedeni so principi obratovanja in glavne značilnosti posameznih tipov hladilnih naprav. Na kratko so predstavljene tudi glavne lastnosti delovnih fluidov. V eksperimentalnem delu smo z uporabo programa Aspen HYSYS simulirali delovanje absorpcijske in ejektorske toplotne črpalke. Kot delovno snov smo v absorpcijski toplotni črpalki izbrali H2O/NH3, v ejektorski toplotni črpalki pa R600a (metilpropan). Preverili smo, kako na njuno delovanje in učinkovitost (COP) vplivajo različni obratovalni pogoji. Nadalje smo dobljene rezultate obeh naprav primerjali in njuno obratovanje tudi ekonomsko ovrednotili. Na podlagi rezultatov eksperimentalnega dela je moč zaključiti, da ejektorska toplotna črpalka obratuje bolj učinkovito. Pri neposredni primerjavi obeh črpalk je pri izbranih pogojih COP absorpcijske toplotne črpalke variiral od 0,61 do 0,69. Medtem ko je ejektorska toplotna črpalka obratovala s COP med 1,43 in 1,69.
Keywords:absorpcijska toplotna črpalka, ejektorska toplotna črpalka, ejektor, hladilno sredstvo, koeficient učinkovitosti, simulacija
Place of publishing:Maribor
Place of performance:Maribor
Publisher:[R. Špendl]
Year of publishing:2022
Number of pages:1 spletni vir (1 datoteka PDF (XI, 53 f.))
PID:20.500.12556/DKUM-81007 New window
UDC:66.012.7:621.577(043.2)
COBISS.SI-ID:96808707 New window
Publication date in DKUM:01.02.2022
Views:1265
Downloads:18
Metadata:XML DC-XML DC-RDF
Categories:KTFMB - FKKT
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Licences

License:CC BY-NC-ND 4.0, Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International
Link:http://creativecommons.org/licenses/by-nc-nd/4.0/
Description:The most restrictive Creative Commons license. This only allows people to download and share the work for no commercial gain and for no other purposes.
Licensing start date:06.12.2021

Secondary language

Language:English
Title:Technoeconomic comparison of ejector and absorption heat pump
Abstract:Due to the large aspirations for cost-cutting and maximum energy efficiency the usage of heat pumps in industrial processes is more and more popular. In the master's thesis, we compared the operational characteristics of a well-known and researched absorption heat pump in comparison to the less-known ejector heat pump. In the theoretical part of the master’s thesis, we made an examination of the different heat pumps. We listed their principles of operation and their main characteristics, also adding a short presentation of the main characteristics of the working fluids. In the experimental part we used the program Aspen HYSYS to simulate the operation of absorption and ejector heat pumps. As a working substance in the absorption heat pump, we used H2O/NH3 and R600a (methylpropane) in the ejector heat pump. We tested how different conditions affect their operation and efficiency (COP). Afterwards, we compared the results for both devices and prepared an economic evaluation of them. Based on results of the experimental part we can conclude that ejector heat pump performs more effectively. In the direct comparison of both types of heat pumps with selected conditions the COP of the absorption heat pump varied from 0,61 to 0,69, while the ejector heat pump’s COP varied from 1,43 to 1,69.
Keywords:absorption heat pump, ejector heat pump, ejector, refrigerant, coefficient of performance, simulation


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