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.
List of Senate Seats Up for Election in 2016. 1  Kentucky: Republican Rand Paul. The incumbent won re-election. 2  Louisiana: Republican David Vitter. The incumbent won re-election. 3  Maryland: Democrat Barbara Mikulski*. 4  Missouri: Republican Roy Blunt. The incumbent won re-election. 5  Nevada: Democrat Harry Reid*. 6  New Hampshire: Republican Kelly Ayotte.