A capillary pumped loop (CPL) is a closed two-phase loop in which capillary forces developed in a wicked evaporator passively pump the working fluid over long distances to dissipate heat from electronic and power sources. Because it has no moving parts and requires minimal power to sustain operation, the CPL is considered an enabling technology for thermal management of spacecraft. While the st...

A planar, silicon mini capillary pumped loop (CPL) was designed, built, and tested using recent MEMS technology to provide integral cooling and temperature control for electronics. This design featured three silicon fusion bonded wafers incorporating an evaporator, condenser, liquid line and vapor line, all of which were dry plasma etched. Grooves were etched in the condenser and evaporator to ...

Mathematical model for a multiple effect evaporator system with condensate-, feedand productflash and steam splitting Ravindra Bhargava, Shabina Khanam*, Bikash Mohanty & Amiya K Ray Department of Chemical Engineering, Department of Paper Technology, Indian Institute of Technology Roorkee, Roorkee 247 667, India Department of Chemical Engineering, National Institute of Technology Rourkela, Rour...

The objectives of this study are to provide experimental data and a correlation that can be used in the optimal design of an evaporator under frost conditions. In the present study, we tested both a single stage and a two-stage evaporator with a variation of operating parameters and fin geometry under frost conditions. The effects of tube space and fin alignment on the heat transfer performance...

The most critical problem in the world is to meet the energy demand, because of steadily increasing energy consumption. Refrigeration systems` electricity consumption has big portion in overall consumption. Therefore, considerable attention has been given to refrigeration capacity modulation system in order to decrease electricity consumption of these systems. Capacity modulation is used to mee...

Article deals with the problem of heat transfer by condenser and evaporator for a closed loop pipe cooling hermetically sealed electrotechnical box. In an article can find design exchanger optimal solution, construction description experimental state measuring their performance. Air temperatures, system pressure, air flow data were recorded. The measured values are then evaluated capacity excha...

An electron beam evaporator has been assembled, tested and used for deposition of thin nickel films. Flux and deposition rates has been measured with an oscillating quartz crystal monitor (QCM), an ion sensor wire, and visible deposition on a mirror on front of the evaporator. A thin nickel rod of 2 mm diameter was found to improve the pressure in comparison to a 6-mm nickel rod. The flux was t...