幸地 佐代子

EPA’s Proposed Changes to Midea opts for Honeywell’s A1 aircon refrigerant R466A

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USA/CHINA: Chinese manufacturer Midea is looking to use Solstice N41 (R466A), Honeywell’s new non-flammable, lower GWP refrigerant, in all its VRF and chiller systems. Honeywell’s partnership with Midea Group, follows “promising” test results with the new refrigerant announced by fellow air conditioning manufacturer Toshiba Carrier in January. “As the first non-flammable refrigerant replacement for R410A, … Read more

Midea opts for Honeywell’s A1 aircon refrigerant R466A

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USA/CHINA: Chinese manufacturer Midea is looking to use Solstice N41 (R466A), Honeywell’s new non-flammable, lower GWP refrigerant, in all its VRF and chiller systems. Honeywell’s partnership with Midea Group, follows “promising” test results with the new refrigerant announced by fellow air conditioning manufacturer Toshiba Carrier in January. “As the first non-flammable refrigerant replacement for R410A, … Read more

The Long-term Strategy under the Paris Agreement

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The Government of Japan (Cabinet decision, June 11, 2019) The Global Warming Prevention Headquarters of the Government of Japan approved the “Long-Term Strategy as a Growth Strategy Based on the Paris Agreement” on the 11th of June 2019 as a long-term strategy for developing low-emissions of greenhouse gases based on the Paris Agreement, and the … Read more

Details of refrigerant properties

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[param name=”p2″] : General infromation Type [param name=”p1″] Refrigerant name [param name=”p2″] IUPAC Chemical Name [param name=”p3″] Chemical_formula [param name=”p4″] Composition [param name=”p5″] Mass fraction [param name=”p6″] Molar mass (g/mol) [param name=”p7″] Physical properties Critical point Pressure(kPa) [param name=”p8″] Density(kg/m3) [param name=”p9″] Temperature(K) [param name=”p10″] Tripple point Temperature(K) [param name=”p11″] Pressure(kPa) [param name=”p12″] Standard atomosphere … Read more

R729

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Features The r729 is air and is used for aircraft air conditioning and cryogenic refrigeration equipment. It is a natural refrigerant, and GWP is a low value. It is often used in aircraft, although it is not very efficient as an equipment from its absolute safety. When it is used at cryogenic temperatures, it becomes … Read more

R449A

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Features R449A’s an alternative refrigerant in R404A or R22. It is sold by the name of Opteon XP40 from Kemmers. It is thought that it is used for the condensing unit and the cold chiller, the refrigeration warehouse, etc. Compared to R404A, GWP is about 1/3. Opteon™ XP series Download Refrigerant number R449A Category Mixed … Read more

EPA’s Proposed Changes to Section 608 Cause Concern in the Industry

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Some HVACR professionals are wary about new rules regarding HFC leak repair/purchase Last September, the Environmental Protection Agency (EPA) proposed a new rule that would rescind the provisions regarding maintenance and leak repair to appliances that contained 50 or more pounds of substitute refrigerants such as HFCs. Basically, the proposed rule would roll back parts … Read more

Carbon Dioxide for Industrial Refrigeration (part 2)

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Scientific study of the atmosphere has revealed that the CO2 in the earth’s atmosphere is a significant contributor to global warming. The important sources of atmospheric CO2 are emissions from fossil fuel electrical power generating plants and from combustion engines powering vehicles of all types. Currently, regulations do not limit CO2 quantities that may be … Read more

EPA’s Proposed Changes to Section 608 Cause Concern in the Industry

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Some HVACR professionals are wary about new rules regarding HFC leak repair/purchase Last September, the Environmental Protection Agency (EPA) proposed a new rule that would rescind the provisions regarding maintenance and leak repair to appliances that contained 50 or more pounds of substitute refrigerants such as HFCs. Basically, the proposed rule would roll back parts … Read more