The analysis of the possibility of use of nanofluid as the heat carrier for increase in efficiency of heat supply systems

4th International Conference on Safety Problems of Civil Engineering Critical Infrastructures

土木建筑工程

Girfanova, V.V.^1 ; Gevorgyan, A.G.^1 ; Velkin, V.I.^1

Department of Nuclear Power Plants and Renewable Energy, Ural Federal University, Mira Street 19, Yekaterinburg

620002, Russia^1

关键词: Heat carriers;    Heat pumps;    Heat supply systems;    Nanofluids;    Volume concentration;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/481/1/012034/pdf
DOI  :  10.1088/1757-899X/481/1/012034

学科分类：土木及结构工程学

来源: IOP

【 摘 要 】

The article is about possibility of applying nanofluids in heat supply systems as a coolant. The most effective nanofluids were selected by analyzing the thermal conductivity, concentration, size, mass, and velocity of nanoparticles. It is presented the dependences of the heat transfer coefficient of a nanofluid on the Reynolds number and the heat transfer coefficient on the volume concentration. It has been calculated, that with the addition of 1% vol. of nanotubes to the coolant path that gives heat in the evaporating section of the heat pump, the heat transfer coefficient of a nanofluid increases by 100%, and with adding 2% vol. or 3% vol. by 200% and 300%, respectively.