Abstract
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Highlights
The heat pipe (Faghri, 1995) is a highly effective passive heat transfer device for transmitting heat at high rates over considerable distances with extremely small temperature drops, exceptional flexibility, simple construction, and easy control with no external pumping power
Most of the Perkins tubes were wickless gravity-assisted heat pipes, in which heat transfer was achieved by a change of phase
The Perkins tube design closest to the present heat pipe was patented by Jacob Perkins (1836)
Summary
The heat pipe (Faghri, 1995) is a highly effective passive heat transfer device for transmitting heat at high rates over considerable distances with extremely small temperature drops, exceptional flexibility, simple construction, and easy control with no external pumping power. Design and manufacturing simplicity, small end-toend temperature drops, and the ability to control and transport high heat rates at various temperature levels are all unique features of heat pipes. The Perkins tube design closest to the present heat pipe was patented by Jacob Perkins (1836). This design was a closed tube containing a small quantity of Water operating as a two-phase cycle
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