Loading...

Methematical Modeling of Steady State Operation of A Loop Heat Pipe

Mostafazade Abolmaali, Ali | 2015

711 Viewed
  1. Type of Document: M.Sc. Thesis
  2. Language: Farsi
  3. Document No: 47722 (08)
  4. University: Sharif University of Technology
  5. Department: Mechanical Engineering
  6. Advisor(s): Shafii, Mohammad Behshad
  7. Abstract:
  8. Loop heat pipe (LHP) is a two phase heat transfer device that is mostly used in cooling spacecrafts facilities. In this research a novel LHP is studied analytically and its steady state operating characteristics is analyzed in a one dimensional approach with heat transfer and pressure drop correlations. The novel LHP has a new arrangement in evaporator and reservoir configuration in comparison with conventional LHPs, which results in a different energy and fluid flow. In addition, the novel LHP has a new mechanism for acive control of working temperature. In modeling the proposed LHP the fluid and energy flows are first determined, then proper correltaions for calculationg each energy flow is selected. Afterward, these correltaions are arranged in a proper algorithm to develop a 1-D steady state code. The main goal of this code is to predict the temperature distribution along the loop, evaporator body and reservoir. This prediction is conducted in terms of applied heat load and geometrical characteristics of evaporator, reservoir, condenser, subcooler, vapor line and liquid line. The steady state code can also predict the effect of new active temperature control method used in novel LHP, on working temperature and pressure drops of the device. Finally the steady state 1-D model is verified with experiments to check the accuracy of the code. The results of modeling at different applied heat loads were consistent with the results of experiments
  9. Keywords:
  10. Mathematical Modeling ; Energy Flow ; Fluid Flow ; Loop Heat Pipe ; Active Temperature Control

 Digital Object List

 Bookmark

No TOC