Heat-Driven Pulse Pump

The heat-driven pulse pump has been invented in an effort to satisfy a need for pumps that can circulate heat-transfer fluids at low flow rates with high reliability over long operational lifetimes. The heat-driven pulse pump (HDPP) is so named because it generates pumping action by exploiting periodic (pulsed) heating and vaporization alternating with cooling and condensation of the fluid to be pumped. To be amenable to pumping by an HDPP, a fluid must, therefore, be one that can be vaporized and condensed within a convenient range of pressure and temperature. Anhydrous ammonia is one example of such a fluid that could be useful in many applications.