Abstract: The device operates with an internal combustion engine (1) and utilizes the combustion heat of the same. In addition to the heat of the cooling water exiting from the engine (1), the exhaust gases are transferred to a water circuit in an exhaust gas heat exchanger (4). The mechanical performance of the engine (1) is, through the direct application of a hydraulic brake (14), almost completely changed into thermal energy, and the heat thus produced is likewise conducted to the water circuit. The water heated is conducted through a vaporizing unit (7), where it brings the cryogenic fluid conducted in a pipe coil (25) or in a pipe assembly to vaporization.

Abstract: The cryogenic pump operates in two stages, utilizing a supercharging part and a high pressure part. These two parts are comprised of a high pressure piston pump (3, 4, 34, 35) and a supercharger (5, 6, 61, 62) disposed in a tandem relationship and sharing a common piston rod (8). The supercharger is enclosed in a heat insulated intermediate container (7) and delivers the liquid cryogenic fluid to the high pressure cylinder. The pump operates to convey a liquid cryogenic fluid such as liquid nitrogen, for example, at a high pressure through evaporating means into pressure resistant commercial steel cylinders where the gaseous nitrogen is kept at a pressure of 200 bar and ambient temperature.