Abstract: A temperature management system for an air compressor includes a plurality of cooling fans coupled to an intercooler of the air compressor; an electrical relay comprising a coil and contacts operated by the coil; and a temperature switch coupled to the coil of the electrical relay. The contacts are located between the cooling fans and an electrical power supply. The temperature switch opens at a temperature above a predetermined temperature at a high pressure inlet of a high pressure stage of the air compressor, thereby closing the contacts of the electrical relay which applies power to the cooling fans.

Abstract: A vane type pump having vanes 9 slidingly confined in radial slots 8a in a rotor 8 operating eccentrically in a cylindrical casing 6 rotatably disposed in the housing 4 of the pump. A clutch 10 engages and disengages the rotor with the pump shaft 2 according to the speed of the shaft. The provision of the frictionally rotatable casing and the clutch enables the pump to operate at high speed with minimal vane wear and with reduced or no lubricating oil.

Abstract: The multistage injection of water into the pressure vessel of a nuclear reactor including the steam-driven injection of water using steam generated by the reactor, the stages of injection subject to the cooling of water heated by the steam, whereby the pressure level of the water injected is boosted in stages.