Eksperimentalno i numeričko istraživanje termo-strujnih procesa u paketu perforiranih ploča
Докторанд
Tomić, Mladen A.Ментор
Vukić, MićaЧланови комисије
Ilić, GradimirStevanović, Žarko
Janevski, Jelena
Živković, Predrag
Метаподаци
Приказ свих података о дисертацијиСажетак
One of the most important characteristics of heat exchangers, besides thermal
efficiency, is their compactness or surface area to volume ratio. The need to achieve high
efficiency in a compact unit with high operating pressure has led to the development of heat
exchangers with perforated plates or, as they are called in the literature, the Matrix Heat
Exchangers (MHE).
In this PhD thesis experimental and numerical research was undertaken to measure the
thermal and flow characteristics of an assembly of perforated plates, in an effort to obtain
indications for engineering calculations.
The study was undertaken in the Laboratory for Thermal Engineering at the Faculty of
Mechanical Engineering, Niš. In the experimental part of the study, packages of one, two and
three 2 mm thick plates were used, with a porosity of 25.6% and a square arrangement of
holes that were 2 mm in diameter. Water was used as the heating fluid, while the heated fluid
was air. The package of plates was p...laced in the experimental chamber which had a fan as an
inlet, with the ability to control the flow. The fluid flow rate, pressure drops and the
temperatures of the fluids at the inlet and outlet of the chamber, as well as the temperature of
air between the plates, were measured at the pre-defined locations in the perforated plate heat
exchanger. Also, the pressure drop was measured for the perforated plate package with and
without the water collector.
In the numerical part of this research, the PHOENICS 2014 software package was used.
In the first part of the numerical study the heat transfer from plates with the porosity from 10
to 50% was investigated. In the second part of the numerical study, a package of three plates
was established and the effect of distance between the plates was also examined.
Experimental results and the results of other authors were used to validate the
numerical experiment.
iv
On the basis of experimental and numerical results, criterial equations for heat transfer
and formulas for pressure drop equations were established.
Факултет:
Универзитет у Нишу, Машински факултетДатум одбране:
10-07-2015Пројекти:
- Развој новог метеоролошког мерног стуба за карактеризацију турбулентних параметара ветра (RS-MESTD-Technological Development (TD or TR)-33036)
- Унапређење енергетских карактеристика и квалитета унутрашњег простора у зградама образовних установа у Србији са утицајем на здравље (RS-MESTD-Integrated and Interdisciplinary Research (IIR or III)-42008)