EXTREMELY LOW-TEMPERATURE MIXED COOLANTS FORMED BY MIXING COOLANTS WITH DIFFERENT BOILING POINTS FROM EACH OTHER, NOT CONTAMINATING AIR IN CASE OF BEING LEAKED, AND NOT HAVING THE DANGER OF EXPLOSION

摘要

PURPOSE: Extremely low-temperature mixed coolants are provided to prevent the environmental contamination without danger of explosion, to have high endothermic efficiency in an evaporator, and to be able to ultralow cool.;CONSTITUTION: Extremely low-temperature mixed coolants using for ultralow cooling system comprise: 0.9-11 parts by R-123, 6.3-7.7 parts by weight of R-124, 2.7-3.3 parts by weight of R-407c, 1.8-2.2 parts by weight of R-507, 1.3-1.7 parts by weight of R-410a, 1.8-2.2 parts by weight of R-116, 1.0-1.4 parts by weight of R-23, 2.3-2.8 parts by weight of R-14, 0.5-0.7 parts by weight of argon(Ar), and 0.31-0.39 parts by weight of nitrogen(N). The coolants additionally comprise one or both of methane(CH4) or Krypton(Kr), and the rate thereof is respectively 0.9-1.1 parts by weight.;COPYRIGHT KIPO 2012