Hydrogen, the working fluid inside the JTEC heat engine, traverses a loop to produce electricity. At the start of the process, the hydrogen [H₂] is in a heated [green waves], high-pressure chamber [Section 3 in the animation]. As it is forced from Section 3 to Section 4, the hydrogen gas strikes a proton-conducting membrane and electrode assembly that generates electricity. The hydrogen, now at low pressure, heads for the cool side [Section 1], where a small amount of voltage applied to another stack pressurizes the hydrogen [Section 2] and sends it back up the track to begin the process again [Section 3]. Along the way, the high pressure and low-pressure hydrogen exchange heat, boosting the process's efficiency.

ANIMATION: JOHNSON RESEARCH AND DEVELOPMENT CO.