Unapređenje energetsko-eksergetske efikasnosti primenom panelnih sistema za grejanje kuća sa neto-nultom potrošnjom energije
Improvement of energy-exergy efficiency by applying the panel systems for heating the net-zero energy house
Author
Cvetković, Dragan Z.Mentor
Bojić, MiloradCommittee members
Lukić, NebojšaJovičić, Nebojša
Despotović, Milan
Petrović, Jovan
Metadata
Show full item recordAbstract
Panelni sistemi grejanja u Srbiji su relativno poznat koncept. Međutim, kao
posledica nedostataka informacija kao i inženjerskih predrasuda, na njihovu pravu
primenu se i dalje čeka. Poznato je da panelni sistemi grejanja, zbog svog mehanizma
odavanja toplote, pružaju najbolje uslove termičke ugodnosti. Međutim, u naučnim
krugovima postoje brojne polemike koji panelni sistem ima najbolje karakteristike.
Cilj ove disertacije je bio da naučnim pristupom, međusobno uporedi sve
postojeće panelne sisteme i da sagledavanjem kako njihovih vrlina tako i nedostataka,
unapredi iste sa energetskog i eksergetskog aspekta. Prvi cilj disertacije je bio da
uporedi poznate panelne sisteme grejanja i uspostavi njihove međusobne relacije.
Relacije su uspostavljene nizom numeričkih istraživanja, koje su dovele do razvoja
jednog novog panelnog sistema grejanja nazvan „podno-plafonsko“ grejanje. Numerička
istraživanja su ustanovila da „podno-plafonski“ sistem grejanja, u slučaju
uobičajene grad...nje kuća, troši manje za oko 27%, 10% i 22%, u odnosu plafonsko,
zidno i podno grejanje, respektivno. Optimizacijom debljina termoizolacije samih
panela, a i kuća koje koriste panelne sisteme zaključeno je da u slučaju korišćenja
optimalno dobijenih debljina termoizolacije ušteda primenom panelnih sistema
grejanja je porasla na oko 40%. Takođe, došlo se do graničnih vrednosti faktora
transformacije primarne energije, ispod koje panelni sistemi povezani na
geotermalne toplotne pumpe troše manje primarne energije nego panelni sistemi
povezani na kotlove na prirodni gas. U cilju verifikacije numeričkih istraživanja,
sprovedeno je i eksperimentalno istraživanje na test modelu u laboratorijskim
uslovima. Eksperimentalna istraživanja su potvrdila numerički dobijene rezultate.
Takođe, u okviru ove disertacije formiran je i matematički model „podno-
plafonskog" grejanja i ispitan u slučaju eksperimentalnog test modela. Na osnovu
sprovedenih numeričkih i eksperimentalnih istraživanja definisani su načini za
unapređenje energetsko-eksergetskih karakteristika panelnih sistema, napravljeno je
jasno poređenje među postojećim panelnim sistemima, a takođe je i zaključeno da
postoji opravdanost upotrebe koncepta „podno-plafonskog“ grejanja.
In Serbia, the panel heating systems are relatively well-known concept. However, as a
result of lack of information as well as engineering prejudice the panel heating system to their
right application is still waiting. It is known that panel heating systems, due to its mechanism
of heat transfer, providing the best thermal comfort. However, in the scientific community
there is much controversy which the panel system has the best characteristics.
The aim of this thesis was to utilize the scientific approach, compared to each other all
the existing panel systems and reviewing how their virtues and flaws improve the same, both
energy and exergy aspect. The first aim of the thesis was to compare the known panel heating
systems and establish their common relations. The relations were established using the series
of numerical investigations that led to the development of a new panel heating system called
"floor-ceiling" heating. Numerical studies have found that the “floor-ceiling”... used in the
houses with comonly construcion type, heating system consumes less about 27%, 10% and
22%, compared to ceiling, wall and floor heating, respectively. The houses with optimal
optimum thickness of thermal insulation the energy savings by using the floor-ceiling panel
heating panels was increased to around 40%. By optimizing the thickness of the thermal
insulation of the heating panels and houses that use panel heating systems, it was concluded
that in the case of using the optimal thickness of the thermal insulation savings obtained by
using panel heating systems has increased to around 40%. Moreover, it was obtained the limit
values of factors transformation of primary energy, under which panel systems connected to
geothermal heat pumps consume less primary energy than panel systems connected to the
natural gas boilers. In order to verify the numerical investigation and the experimental
research was conducted on the test model under laboratory conditions. Experimental studies
have confirmed the obtained numerical results. Also, the mathematical model of “floorceiling”
heating was formed and tested in the case of tхe experimental test model. Based on
the conducted numerical and experimental studies it was defined the ways to improve the
energy-exergetic characteristics of the panel system, it was created clearly comparison
between the existing panel systems, and is also it was concluded that there is justification for
the use of the new concept called the "floor-ceiling" heating.
Faculty:
Универзитет у Крагујевцу, Факултет инжењерских наукаDate:
04-06-2015Projects:
Keywords:
panelno grejanje / panel heating / podno-plafonsko grejanje / energija / eksergija / EnergyPlus / eksperiment / floor-ceiling heating / energy / exergy / EnergyPlus / experimentalRelated items
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