They are air, calcium chloride brine, sodium chloride brine, alcohol, and similar nonfreezing solutions. The purpose of Class 2 refrigerants is to receive a reduction of temperature from Class 1 refrigerants and convey this lower temperature to the area to be air-conditioned.
Elections for the United States Senate will be held on November 8, 2016, with 34 of the 100 seats in the Senate being contested in regular elections whose winners will serve six-year terms from January 3, 2017 until January 3, 2023.
The Senate. The U.S. Senate is considered the upper body of the U.S. Congress and is made of of two senators from each state. Senators are elected by popular election within their represented state and serve a term of 6 years. Elections for the Senate are held every 2 years, with about a third of the Senate being up for re-election each time.