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.
In Politics and Government. Members of the Senate are elected every six years to keep a balance  in the Senate. Every two years, only 1/3 of the senators are  potentially replaced, making it a more sta â¦ ble governing body than  the House.n US Congress. According to the constitution, each senator is elected to a six-year term. There are congressional elections every two years. When the constitution was first put into practice â¦ , one third of the first group of senators served only two years, the second third, four years, and the final third six years.