from thermal fluids central and dr. amir gaghri, ph.d., university of conneticut.  a detailed overview of heat pipes is presented in this paper, including a historical perspective, principles of operations, types of heat pipes, heat pipe performance characteristics, heat pipe limitations, heat pipe frozen startup and shutdown, heat pipe analysis and simulations, and various applications of heat pipes. over the last several decades, several factors have contributed to a major transformation in heat pipe science and technology. the first major contribution was the development and advances of new heat pipes, such as loop heat pipes, micro and miniature heat pipes, and pulsating heat pipes. in addition, there are now many new commercial applications that have helped contribute to the recent interest in heat pipes, especially related to the fields of electronic cooling and energy. for example, several million heat pipes are now manufactured each month since all modern laptops use heat pipes for cpu cooling. numerical modeling, analysis, and experimental simulation of heat pipes have also significantly progressed due to a much greater understanding of various physical phenomena in heat pipes, as well as advances in computational and experimental methodologies.   click here to download this excellent resource from thermal fluids central, 48 pages in all, and at no cost.

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