NUMERICAL ANALYSIS OF HEAT TRANSFER PERFORMANCE AND THERMAL DISTRIBUTION AFFECTION OF PANEL RADIATORS TO INVOLVING PROPYLENE GLYCOL AS INTERNAL FLUID WITH WATER
Abstract
Panel radiators are commonly used as heating elements with water as fluid. In this study, the different fluid is added to installation as mixed with water. Propylene glycol which has lower freezing point value and non-toxic impression. Numerical analysises are completed by CFD method which has independence of grids to provide reasonable results. Firstly, 1x0.6 m. panel radiator which uses the 100% water as internal fluid has been analysed by numerically and then, the fluid has been changed as 10% propylene glycol and 90% water and numerical analysis has been realized identically. The heating fluid velocity is increased about 15% for the mixed scenario, and thermal distribution is more homogenous. However, pressure loss value is increased about 43% for the mixed fluid scenario. Eventhough, the heat transfer performance is found less about 12% than pure water. The distribution of the heat provides better thermal comfort and lower freezing point.
Keywords
Panel radiators,Heat transfer performance,Propylene glycol,Thermal distribution
Thanks
Simülasyon çalışmaları kapsamında Vaillant Grup, Türk Demirdöküm Fabrikalarına teşekkür edilmektedir.
References
- [1] Altuntaş, N., ‘’ Guneş Enerjisi Tesisatlarında Antifriz Olarak Etilen ve Propilen Glikol Kullanımının İncelenmesi’’ Tesisat Mühendisliği Dergisi, 86 (2005): p.31-38.
- [2] Yiven, J., Zishuai Y., Zhaohui L., Yi, L., Rui, L., ‘’ Simulation Study of Impacts of Radiator Selection on Indoor Thermal Environment and Energy Consumption’’ 8th International Cold Climate HVAC 2015 Conference, 146 (2016): p.466-472.
- [3] Embaye, M., Al-Dadah, R., Mahmoud, S., ‘’ The effect of flow pulsation on the heating performance of panel radiators in central heating systems: CFD analysis’’ Advanced Computational Methods and Experiments in Heat Transfer, 83(2014): p.27-36.
- [4] Yılmaz E., ‘’Exterior surface insulated panel radiator and energy efficiency analysis’’ International Advanced Researches and Engineering Journal, 01(2017): p.18-20
- [5] Kılıç M., Mutlu M., ‘’ Three-Dimensional Numerical Analysis of Thermal Output of a Steel Panel Radiator’’ Progress in Exergy, Energy, and the Environment, 55 (2014): p.585-593
- [6] Kibar A., ‘’A Numerical Investigation of The Heating of A 3D Mosque Model Using Panel Radiators, Sigma Journal of Engineering and Natural Sciences, 36(2018): p.1-10.
- [7] Çelik H.S., Uçar M., Erbay L.B., Efficiency Affection Of Involving Finned Turbulators With Eliptical Formed Holes To Pipe Inlet Surfaces Of A Gas Water Heater Heat Exchanger, 14. Ulusal Tesisat Mühendisliği Kongresi p.1149-1167, İzmir
- [8] Internet: www.engineeringtoolbox.com.
- [9] E. Aydar, I. Ekmekci, “Thermal Efficiency Estimation of the Panel Type Radiators with CFD Analysis,”J. of Thermal Science and Technology, 32 (2012): p. 63-71.
- [10] J.A. Myhren, S. Holmberg, “Design considerations with ventilation radiators: Comparisons to traditional two-panel radiators,” Energy and Buildings, 41 (2009), p. 92-100.