On January 1, 2011 the European Union EU 2006/40/EC Act provisions went into effect. What impact does this act have on refrigerant systems?
What will be an ideal response?
?Beginning on January 1, 2011 the European Union EU 2006/40/EC Act provisions went into effect, though the deadline was extended to January 1, 2013 due to lack of a readily available supply of a new refrigerant. This law was designed to phase out global warming refrigerants with complete phase out of R134a in European by January 1, 2017 for new vehicles sold in EU member countries. The act requires all new automotive platform refrigerant systems to use a refrigerant with a global warming potential (GWP) that is not to exceed 150.
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From a performance standpoint, a substitute for R-12 is ____________________.
Fill in the blank(s) with the appropriate word(s).
Air flows through a wet pipe at 298 K and 1 atm, and the diffusion coefficient of water vapor in air is 2.5x10-5 m2/s. If the heat transfer coefficient is determined to be 80 W/m2?ºC, the mass transfer coefficient is
(a) 0.0022 m/s (b) 0.036 m/s (c) 0.074 m/s (d) 0.092 m/s (e) 0.13 m/s
American and world public opinion turned strongly in favor of the Civil Rights movement when
A. Senator Barry Goldwater came out in favor of the Civil Rights bill. B. Martin Luther King led a successful nonviolent march from Selma to Montgomery, Alabama. C. J. Edgar Hoover's wiretaps on Martin Luther King were exposed. D. Martin Luther King's peaceful demonstrators were viciously attacked in Birmingham. E. Martin Luther King met with President Kennedy at the White House.
In 1989, 60 percent of which eastern European country’s dwellings contained no central heating, and 33 percent did not have indoor toilets?
a. East Germany b. Czechoslovakia c. Poland d. Hungary