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Title:Eksperimentalna primerjava dveh uparjalnikov glede na učinkovitost sanitarne toplotne črpalke zrak-voda
Authors:ID Kišek, Tjaša (Author)
ID Marčič, Milan (Mentor) More about this mentor... New window
ID Višnjić, Zvonko (Comentor)
Files:.pdf UN_Kisek_Tjasa_2015.pdf (4,55 MB)
MD5: 990497FC2FA39668706A96ED568FC127
 
Language:Slovenian
Work type:Bachelor thesis/paper
Typology:2.11 - Undergraduate Thesis
Organization:FS - Faculty of Mechanical Engineering
Abstract:V diplomski nalogi smo primerjali uparjalnik proizvajalca Sest z uparjalnikom proizvajalca Luvata. Na prototipu smo naredili dve meritvi po standardu SIST EN 16147. Izračunali smo energijsko učinkovitost (v nadaljevanju COP), merilno negotovost COP ter energijski razred sanitarne toplotne črpalke. COP sanitarne toplotne črpalke z uparjalnikom Luvata je 3,33, z uparjalnikom Sest pa 3,52. Z obema uparjalnikoma je dosežen energijski razred A+. Ugotovili smo, da je uparjalnik Sest ustrezna alternativa obstoječemu uparjalniku Luvata, saj smo z njim dosegli celo višjo energijsko učinkovitost. Razširjena merilna negotovost COP U(k=2)=±0,0548, kar pomeni 95,45 % verjetnost, da se prava vrednost nahaja znotraj podanega intervala.
Keywords:Toplotna črpalka, toplotni izmenjevalec, uparjalnik, grelno število, merilna negotovost, pregretje, podhladitev, uparjanje, kondenzacija.
Place of publishing:Maribor
Publisher:[T. Kišek]
Year of publishing:2015
PID:20.500.12556/DKUM-54092 New window
UDC:621.577.048(043.2)
COBISS.SI-ID:19157014 New window
NUK URN:URN:SI:UM:DK:3KHRAA2F
Publication date in DKUM:27.10.2015
Views:2157
Downloads:104
Metadata:XML DC-XML DC-RDF
Categories:KTFMB - FS
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Secondary language

Language:English
Title:Experimental comparison of two evaporators with respect to the effectiveness of sanitary air-water heat pump
Abstract:In our thesis we compared the evaporator from producer Sest with the evaporator from producer Luvata. We made two measurements on the prototype according to standard SIST EN 16147. We calculated the energy efficiency (COP), measuring uncertainty of COP and the energy class of the heat pump for sanitary water. The sanitary heat pump with evaporator Luvata has a COP=3,33, with the evaporator from Sest it has a COP=3,52. We achieved an energy class of A+ with both evaporators. We found that the Sest evaporator is a viable alternative to the Luvata evaporator, because we achieved an even higher energy efficiency. The extended measuring uncertainty of COP U(k=2)=±0,0548, which means a 95,45 % probability, that the correct value is inside the given interval.
Keywords:Heat pump, heat exchanger, evaporator, coefficient of performance, measurement uncertainty, overheating, supercooling, evaporation, condensation.


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