Numerical study of heat transfer enhancement in microchannels of the MTPV systems
Heat transfer and fluid flow in the microchannel cooling passages with three different types of the MTPV systems are numerically investigated.The heat transfer characteristics and thermal performance of the microchannels are analyzed using different Reynolds numbers and hydraulic diameters.Local heat transfer coefficient, total pumping power, heat transferred are obtained from the simulations and the performance is discussed in terms of heat transfer coefficient and thermal efficiency.Results indicated enhanced performance with the smaller hydraulic diameters, and slighter penalty in pumping power.The increase in Reynolds number cause an increase in the heat transfer coefficient at the expense of decreased thermal efficiency.It is also found that the highest heat transfer coefficient is expected in rod bundles microchannels.However,round microchannels have a better thermal efficiency than others.
MTPV systems Numerical simulation Microchannel cooling passages
Geping Wu Ping Lu
School of Energy and Power Engineering, Jiangsu University, Zhenjiang,China
国际会议
杭州
英文
119-123
2013-01-18（万方平台首次上网日期，不代表论文的发表时间）