Heat pipes, as two-phase heat transfer devices with extremely high effective thermal conductivity. They can be cylindrical or planar in structure. Heat pipes can be embedded in a metal cooling plate, which is attached to the heat source, and can also be assembled with fin stack for fluid heat transfer. Due to the high heat transport capacity, heat exchangers with heat pipes have become much sma...

The ground thermal properties and the heat-transfer efficiency of the borehole heat exchanger (BHE) system are key parameters for designing ground-coupled systems. Proper design of such systems requires good knowledge of these parameters, providing an efficient and economic operation. For this purpose a test procedure known as Thermal Response Test (TRT) was developed in 1996 at the Oklahoma St...

Double-pipe counter-flow heat exchangers are considered more suitable for recovery in the transfer industry. Numerous studies have been conducted to develop static tools optimizing operating parameters of exchangers. Using this study, an improved exchanger system will be developed. This is frequently used solve optimization problems and find optimal solutions. The Taguchi method determines crit...

In this work, the characteristics of flow and heat transfer of a fluid containing nano particles of aluminum oxide with the water volume fraction (0.1-0.2-0.3)(V/V) percent of the reports. The overall heat transfer coefficient, heat transfer and the average heat transfer fluid containing nano water - aluminum oxide in a horizontal double pipe counter flow heat exchanger under turbulent flow con...

Abstract The paper compares different metaheuristics for using heat exchangers as a benchmark to estimate the best design parameter values optimization efficient algorithms. Many MATLAB algorithms are used in this study. Also, an engineering equation solver, which is commercial software, solve issue. calculates three variables, length, and inner outer pipe diameter of exchanger. results showed ...

The effect of the design on heat transfer is numerically investigated by using wavy inner tube in a double-pipe exchanger. A was used to give turbulent fluid along double In numerical study, ANSYS 12.0 Fluent code program used, and basic protection equations were solved for steady-state, 3-D flow conditions. study examined at Reynolds numbers ranging from 2700-5300. obtained results compared wi...