The heat pipe itself is not a new invention; early heat pipes, developed near the turn of the century, were constructed out of hollow metal tubes which were sealed at both ends, vacuumed and charged with a small amount of evaporative fluid.
Hindi ito bagong imbensyon; ang mga kauna-unahang heat pipe ay ginawa noong simula ng siglo, gamit ang mga tubong gawa sa metal, isinara sa bawat dulo, tinanggalan ng hangin, at linagyan ng kaunting evaporative fluid.