Numerical and experimental investigation of bi-annulus heat exchanger for different alternative materials

International Conference on Advances in Metallurgy, Materials and Manufacturing

冶金学;材料科学;机械制造

Zeeshan, M.^1 ; Duggal, R.^1 ; Tated, M.K.^1 ; Singh, M.^1

School of Mechanical Engineering, Lovely Professional University, Punjab Jalandhar

144411, India^1

关键词: Alternative materials;    Conventional tubes;    Dimensionless temperatures;    Experimental investigations;    Highest temperature;    Low-density polypropylenes;    Polyvinylidene fluorides;    Temperature variation;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/314/1/012017/pdf
DOI  :  10.1088/1757-899X/314/1/012017

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

Heat exchangers are widely used in various energy-recovery applications. However, for specific applications where metallic tubes are subjected to various drawbacks i.e. cost, weight, corrosion etc. polymer materials are promising alternatives. In present study, various conventional as well as promising alternatives materials are chosen for investigation computationally. Experimentally, bi-annulus heat exchanger configuration is investigated for metallic materials. The simulations carried out conclude that the dimensionless temperature parameter for Cross-linked polypropylethylene (PEX) is greater than other polymers. It increases with increasing axial length of tube. The value for dimensionless temperature is higher for copper which is used as conventional tube material. Among different polymers highest temperature is observed for PEX followed by Low density polypropylene (LDPE), Polypropylene (PP) and Polyvinylidene fluoride (PVDF). For axial length up to 70mm approx. the temperature rises for PEX, LDPE is 28.3% and 26.4% respectively. However, temperature variation is same for PP and PVDF for same axial distance. This temperature variation is increased to 72.4%, 67.2%, 58.62% and 56.89% for PEX, LDPE, PP and PVDF respectively as axial distance variation reaches the end of pipe. The inner annulus temperature for PEX material at 10% length of tube is 28.3% of temperature achieved in copper tube which increases to 72.4% for full length of tube.