An integrated experimental and computational approach to material selection for sound proof thermally insulted enclosure of a power generation system

14th International Symposium on Advanced Materials

Waheed, R.^1 ; Tarar, W.^1 ; Saeed, H.A.^1

Department of Mechanical Engineering, College of Electrical and Mechanical Engineering, National University of Sciences and Technology, Islamabad

44000, Pakistan^1

关键词: Computational approach;    Low thermal conductivity;    Power generation systems;    Sound absorbing materials;    Sound absorption coefficients;    Sound proofing materials;    Steady state and transients;    Working temperatures;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/146/1/012045/pdf
DOI  :  10.1088/1757-899X/146/1/012045

来源: IOP

【 摘 要 】

Sound proof canopies for diesel power generators are fabricated with a layer of sound absorbing material applied to all the inner walls. The physical properties of the majority of commercially available sound proofing materials reveal that a material with high sound absorption coefficient has very low thermal conductivity. Consequently a good sound absorbing material is also a good heat insulator. In this research it has been found through various experiments that ordinary sound proofing materials tend to rise the inside temperature of sound proof enclosure in certain turbo engines by capturing the heat produced by engine and not allowing it to be transferred to atmosphere. The same phenomenon is studied by creating a finite element model of the sound proof enclosure and performing a steady state and transient thermal analysis. The prospects of using aluminium foam as sound proofing material has been studied and it is found that inside temperature of sound proof enclosure can be cut down to safe working temperature of power generator engine without compromise on sound proofing.