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 House will then be in session until Sept. 30, and adjourn until Nov. 14, after the elections. The Senate is running on a similar summer schedule, with its recess formally running from July 18 through Sept. 5. Senators are scheduled to be in session during the fall a bit longer than the House, with the Senate's target pre-election adjournment date set for Oct. 7.