Войти 0 Корзина покупок
Главная Книги е-Книги Журналы Справочники & Сборники Авторы, Редакторы, Рецензенты А - Я индекс
Heat Transfer & Transport Phenomena in Microscale

ISBN Print: 1-56700-150-5

EFFECT OF CONDENSER LOCATION AND IMPOSED CIRCULATION ON THE PERFORMANCE OF A COMPACT TWO-PHASE THERMOSYPHON

Аннотация

This study investigates the issues involved in the design of compact two-phase thermosyphon systems. In such systems the locations of the evaporator and condenser need be given a high degree of freedom. Anticipating situations where gravity does not provide sufficient potential to drive the condensate, a pump-assisted circulation loop was studied. Also, enhancement of boiling heat transfer in compact space was achieved by at enhancement structure having mutually connected microchannels. The key components used in the experiment are; a simulated chip (0.907 cm2) with an enhancement structure (6.8 mm high), a dielectric coolant (PF-5060, boiling point 56 °C), a naturally cooled condenser occupying a 6.5 × 6.5 × 17.8 cm3 volume, and a displacement pump (2 − 40 ml/min). The relative height between the evaporator and the condenser, the pumping rate, and the heat input were systematically varied. Theseparameters affect the overall thermal resistance from the chip to the ambient in a complex way. However, close examination of the data suggests that there could be an optimum point in the parametric domain where the thermal resistance is minimized with a least assistance from the pump.
Главная Begell Электронный Портал Begell Электронная библиотека Журналы Книги е-Книги Справочники & Сборники Авторы, Редакторы, Рецензенты А - Я индекс Цены и условия подписки О Begell House Контакты Language English 中文 Русский 日本語 Português Deutsch Français Español