Design and testing of an ammonia loop heat pipe

Comparative study of two loop heat pipes using R134a as the working fluid

“…Generally, an ammonia-charged LHP is able to transport a heat load greater than 600 W with strong antigravity capability [35,36]; while the two LHPs using R134a as the working fluid in this work only have a heat transfer capacity a litter larger than 100 W. The obvious decrease in the heat transfer capacity is mainly caused by the difference in the relevant thermo-physical properties. That is because besides the system structural parameters, the heat transfer capacity of a LHP is strongly dependent on the thermo-physical properties of the working fluid especially the liquid surface tension and evaporative latent heat.…”

Experimental study on a dual compensation chamber loop heat pipe with dual bayonet tubes

“…Compared with traditional heat pipes, it has the advantage of transporting a larger amount of heat over a longer distance with robust antigravity capability. In addition, its flexible transport lines ensures great adaptability in the installment and arrangement in practical applications [4][5][6][7][8]. At the beginning, LHP was invented for spacecraft thermal control, which has been applied in a wide variety of space missions to address the complex thermal management problems where great success has been achieved [9][10][11][12][13][14].…”

Quiet power-free cooling system enabled by loop heat pipe

“…Currently, LHP has been applied in the spacecraft thermal control systems to address the time-varying thermal management problems during the whole mission where great success has been achieved [11][12][13][14][15]. Following the success in the field of space thermal control, to expand LHP applications to the ground environment seems logical, and great efforts have been made by quite a few researchers worldwide, as briefly reviewed below.…”