BibTeX:

@article{IJIRSTV3I3011,
     title={Effect of Inclination Angle on the Thermal Performance of Closed Loop Pulsating Heat Pipe},
     author={Pramod R. Pachghare},
     journal={International Journal for Innovative Research in Science & Technology},
     volume={3},
     number={3},
     pages={60--64},
     year={},
     url={http://www.ijirst.org/articles/IJIRSTV3I3011.pdf},
     publisher={IJIRST (International Journal for Innovative Research in Science & Technology)},
}

This paper presents an experimental study on the effect of inclination angle effect on the thermal performance of closed loop pulsating heat pipe (CLPHP), which consists of 10 turns of copper tubes having inner and outer diameter 2.0 mm and 3.6 mm respectively. The equal lengths of 50 mm were maintained for evaporator, condenser and adiabatic sections. Different working fluids are used as R-134a, Methanol and Water; at optimum filling ratio of 50% by volume. The thermal performance is scrutinized at various inclinations (viz. 0o, 20o, 40o, 60o and 90o) for different heat input. It is concluded that, the thermal performance up to 25W heat input, is more sensitive to the inclination angle; whereas above 25W heat input, less independent as pressure force dominates the inclination angle force. In comparison, vertical bottom heat mode position gives best thermal performance due to presence of inclination angle.

pulsating heat pipe; heat input; inclination angle; inclination angle