COMPOSITION INCLUDING REFRIGERANT, USE OF THE SAME, REFRIGERATING MACHINE HAVING THE SAME AND METHOD FOR OPERATING THE REFRIGERATING MACHINE

• Main Authors: TAKAHASHI KAZUHIRO, ITANO MITSUSHI, KUROKI HITOMI
• Format: Patent
• Language: English; Japanese
• Published: 20.05.2021
• Subjects: ADHESIVES; BLASTING; CHEMISTRY; COMBINED HEATING AND REFRIGERATION SYSTEMS; DYES; HEAT PUMP SYSTEMS; HEATING; LIGHTING; LIQUEFACTION SOLIDIFICATION OF GASES; MANUFACTURE OR STORAGE OF ICE; MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FORELSEWHERE; MECHANICAL ENGINEERING; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; NATURAL RESINS; PAINTS; POLISHES; REFRIGERATION MACHINES, PLANTS OR SYSTEMS; REFRIGERATION OR COOLING; WEAPONS

To provide a mixed refrigerant that has four kinds of performances of having such excellent coefficient of performance and excellent refrigeration capacity as to serve as an alternative refrigerant for R410A, having sufficient small GWP and being nonflammable.SOLUTION: A composition including a refrigerant is characterized in that the refrigerant includes trifluoroiodomethane (CF3I), difluoromethane (R32) and trifluoroethylene (HFO-1123) and that in a ternary composition diagram such that the total sum of HFO-1123, CF3I and R32 is 100 mass%, when the mass% of each of HFO-1123, CF3I and R32 based on the total sum thereof is expressed as x, y and z, respectively, coordinates (x,y,z) lie within a range of a figure surrounded by line segments ZN, NL and LZ connecting three points of point Z (41.6, 53.5, 4.9), point N (0.0. 77.2, 22.8) and point L (0.0. 35.0, 65.0), respectively (exclusive of on the line segment NL); the line segment ZN is represented by a coordinate (x, -0.0007x2-0.5402x+77.2, 0.0007x2-0.4598x+22.8); and the line segments NL and LZ are straight lines.SELECTED DRAWING: None 【課題】R410Aの代替冷媒となり得る優れた成績係数と冷凍能力とを有し、GWPが十分に小さく、かつ不燃という四種の性能を兼ね備える混合冷媒を提供する。【解決手段】冷媒を含む組成物であって、前記冷媒がトリフルオロヨードメタン（CF3I）、ジフルオロメタン（R32）及びトリフルオロエチレン（HFO-1123）を含み、HFO-1123、CF3I 及びR32の、これらの総和を基準とする質量%をそれぞれx、y及びzとするとき、HFO-1123、CF3I 及びR32の総和が100質量%となる3成分組成図において、座標（x,y,z）が、点Z(41.6, 53.5, 4.9)、点N(0.0. 77.2, 22.8)及び点L(0.0. 35.0, 65.0)の3点をそれぞれ結ぶ線分ZN、NL及びLZで囲まれる図形の範囲内（但し、前記線分NL上は除く）にあり、前記線分ZNは、座標（x, -0.0007x2-0.5402x+77.2, 0.0007x2-0.4598x+22.8）で表わされ、且つ、前記線分NL及びLZが直線である、ことを特徴とする組成物。【選択図】なし