TY - JOUR TI - Experimental investigations on an axial grooved cryogenic heat pipe AU - Muniappan Senthil Kumar AU - Arumugam Senthil Kumar JN - Thermal Science PY - 2012 VL - 16 IS - 1 SP - 133 EP - 138 PT - Article AB - This paper deals with development and studies of a trapezoidal axial grooved nitrogen heat pipe. A special liquid nitrogen cryostat has been designed and developed for evaluating the performance of heat pipe where the condenser portion is connected to the cold sink externally. Experiments have been performed on the heat pipe as well as on an equivalent diameter copper rod at different heat loads. The steady state performance of the heat pipe is compared with that of copper rod.