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.
2016 Senate Election Interactive Map. 34 U.S. Senate seats to be contested in 2016. The current U.S. Senate has 54 Republicans and 44 Democrats. Two independents caucus with the Democrats, effectively giving them control of 46 seats. The 2016 Senate elections will take place on November 8, 2016. There are 34 seats up in 2016, of which 24 are held by Republicans. Democrats will need to gain 4 or 5 seats to take control for the 115th Congress, to be sworn in early January, 2017.