Thermosyphon is regarding as highly effective heat transfer device, can be found in many applications, for instance heat exchanger, electronic cooling or power generation etc. Heat transfer performance of thermosyphon is affected by many factors such as, section length, working fluid, filling ratio, inclination angle and heat input. These factors have been studied by numerous investigations that tend to develop for enhancing its performance [3].
As previously experiments we found that thermosyphon is good working at oriented range of 60-90 degree. Researcher attempt to study for improving performance by set new experiment with modifying inclination angle of evaporator and condenser to 0, 60 and 90 degree which respect with 70 degree of adiabatic section as illustrated in Fig.2.