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1,1,1,2-Tetrafluoroethane (also known as norflurane (), R-134a, Klea 134a, Freon 134a, Forane 134a, Genetron 134a, Green Gas, Florasol 134a, Suva 134a, HFA-134a, or HFC-134a) is a hydrofluorocarbon (HFC) and haloalkane refrigerant with thermodynamic properties similar to R-12 (dichlorodifluoromethane) but with insignificant ozone depletion potential and a lower 100-year global warming ...
R-12 was used in most refrigeration and vehicle air conditioning applications prior to 1994 before being replaced by 1,1,1,2-tetrafluoroethane (R-134a), which has an insignificant ozone depletion potential. Automobile manufacturers began phasing in R-134a around 1993 [citation needed].
Promoted as climate-friendly substitute for R-134a and R-410A, but still with high climate impact. Has excellent heat transfer and pressure drop performance, both in condensation and vaporisation. [66] It has an atmospheric lifetime of nearly 5 years. [67] Currently used in residential and commercial air-conditioners and heat pumps. R-134a HFC ...
In 2024 alone, Alabama, Idaho, Iowa, Indiana, Kansas and Utah either banned or limited the use of such teaching or use in the application process in their state's education system.
The RIMS II data for Indiana suggest grants and contracts to IU and Purdue add over $2 billion in direct and indirect value to Indiana’s economy annually. This amount of funding supports an ...
Calumet College of St. Joseph. Earlham College. DePauw University. Franklin College. Grace College. Huntington University. Indiana State Universty (through Oct. 1) Indiana Tech. Indiana University ...
Dichlorodifluoromethane (R-12 or CFC-12), the most commonly used Freon brand refrigerant prior to its ban in many countries in 1996 and total ban in 2010. 1,1,1,2-Tetrafluoroethane (R-134a or HFC-134a), one of the main replacements for the formerly widespread R-12. Opteon halogenated olefins now replacing Freons in many applications.
The Higher Learning Commission is the institutional accrediting agency that has historically accredited many colleges and universities in Indiana. Additionally, Indiana is home to three public university systems: Indiana University, the Ivy Tech Community College of Indiana, and the Purdue University System.