Author(s):
1. Mladen Tomić, The School of Higher Technical Professional Education, Niš, Serbia
2. Predrag Živković, Faculty of Mechanical Engineering in Niš, Serbia
3. Mića Vukić , Faculty of Mechanical Engineering in Niš, Serbia
4. Mirko Dobrnjac, Faculty of Mechanical Engineering, Republic of Srpska, Bosnia and Herzegovina
5. Dragana Dimitrijević, Faculty of Mechanical Engineerning, Serbia

Abstract:
The need for compact heat exchangers has led to the development of many types of surfaces that enhance the rate of heat transfer, among them and perforated plate heat exchangers. The perforated plate heat exchangers consist of a series of perforated plates, that are separated by a series of spacers. The present study investigates the local heat transfer characteristics of flow through a perforated plate with 2 mm in diameter, hole length to diameter ratio of 1 and porosity of 25.6%. For the determination of the local heat transfer, numerical simulations were performed. Reynolds numbers based on the perforated plate pitch were in the range from 80 to 300. The results of average Nusselt number prediction were compared with the related experimental correlations. The experimental results agreed on qualitatively with the results obtained using a CFD.

Key words:
local heat transfer, perforated plate, CFD

Thematic field:
Energy and Thermal Engineering

Date of abstract submission:
06.03.2015.

Conference:
12th International conference on accomplishments in Electrical and Mechanical Engineering and Information Technology (DEMI 2015)

Final paper