Abstract: A conveying conveyer 2 which conveys vitreous vessels 1 such as vials or ampoules in a plurality of rows is disposed within a canister body 4. There are provided hot air supplying means 6 which blows a hot air against the vessels 1 on the conveying conveyer 2 to heat them to or above a predetermined temperature for purpose of sterilization, windows 34, 36 and 38 mounted in wall surfaces 4c, 4d and 18 of the canister body 4 for allowing infrared rays generated by the heated vessels 1 to transmit therethrough, and radiation pyrometers 40, 42 and 44 disposed externally of the canister body 4 for sensing infrared rays generated by the heated vessels 1 to measure the temperature of the vessels 1. Since the radiation pyrometers 40, 42 and 44 are located externally of the canister body, a confirmation of operation or a repair/replacement is facilitated, providing an excellent maintenance capability.

Abstract: A refrigerating apparatus comprising a refrigerating cycle into which a screw compressor is incorporated, and a liquid super cooler connected on the way of a liquid pipe of said refrigerating cycle, said screw compressor having a gas intake and/or liquid coolant injection opening which is located at a position where the screw blades of the screw compressor have at least partially compressed the gas in the screw compressor. The position of the gas intake provided in the screw compressor and intended to pass the gas from the liquid super cooler into the screw compressor is limited under such a condition thatV.sub.i = 1.0 .about. 4.5In which ##EQU1## V.sub.L represents the theoretically maximum screw space volume (m.sup.3 /h) in the screw compressor and V.sub.H represents the screw space volume (m.sup.3 /h) at the position of the gas intake.