FIELD: engines and pumps.
SUBSTANCE: invention relates to pump for transfer of, for example, cryogenic hydrogen from vessel into tank kept at higher pressure. It includes the cylinder accommodating reciprocating piston. Note here that the volume of cylinder low-temperature chamber decreases when said piston reciprocates in the first direction. Hence, the volume of high-temperature cylinder chamber, opposite the first one, increases. Besides, said pump comprises fluid inlet channel terminating at low-temperature chamber and communicated with tank, fluid discharge chamber running from high-temperature cylinder chamber communicated with vessel, and fluid connection pipeline communicating said both chambers. Note here that at least one heater is arranged to heat fluid flowing during said first reciprocation from low-temperature chamber to high-temperature chamber to up the pressure in the latter exceeding that in the vessel.
EFFECT: increased MTBR.
1 dwg, 12 cl
