Experimental Study on Forced Convection Heat Transfer from Plate-Fin Heat Sinks with Partial Heating

Abstract

In this study, plate-fin heat sinks with partial heating under forced convection were experimentally investigated. The base temperature profiles of the plate-fin heat sinks were measured for various heating lengths, heating positions, flow rates, and channel widths. From the experimental data, the effects of heating length, heating position, and flow rate on the base temperature profile and the thermal performance were investigated. Finally, the characteristics of the optimal heating position were investigated. As a result, it was shown that the optimal heating position was on the upstream side in the case of the heat sinks under laminar developing flow, as opposed to the heat sinks under turbulent flow. It was also shown that the optimal heating position could change significantly due to heat losses through the front and back of the heat sink, while the effects of the heat loss through the sides of the heat sink on the optimal heating position were negligible. In addition, it was shown that the one-dimensional numerical model with empirical coefficients could predict the important trends in the measured temperature profiles, thermal resistances, and optimal heating lengths.

Study of Activation Energy on the Movement of Gyrotactic Microorganism in a Magnetized Nanofluids Past a Porous Plate

“…This conception was extended by Kuznetsov and Geng [46] to numerous bio-convection problems. Lee et al [47] experimentally interpreted the effects of convention in heated plate-fin. Khan and Makinde [48] examined nanofluid bio-convection caused by gyrotactic-microorganisms and they perceived that the microorganisms amplify the base-fluid density through floating/swimming in a specific manner.…”

Optimization of Heat and Mass Exchange

“…Lee et al [7] investigate forced convection on a plate-fin heat sink in an experimental study. The heat transfer performance and the effect spatial characteristics rate are investigated.…”

An Analytical and Experimental Evaluation of a Heat Sink Under Constant Heat Flow and Forced Convection Heat Transfer

“…Next are papers that reported studies on heat and flow characteristics with partial heating in the heat sink [11][12][13]. Lelea [11] studied a numerical model of heat removal and flow in a microchannel heat sink with partial heating.…”

“…Lee, et al [13] performed an experimental research on a partially heated basin using forced convection. They studied several design parameters, namely the effect of length and location of heating, air velocity on base temperature and efficiency.…”