Proper cooling tower temperature assures the proper refrigerant head pressure in the chiller. Additionally, no external chiller bath or refrigeration unit is needed. The cooling would be performed with an absorption chiller. A vapor-compression chiller uses a refrigerant internally as its working fluid. As an adsorption chiller requires no compressor, it is relatively quiet. Water is a commonly used coolant, usually circulated through a chiller or heat transfer system. It is a chamber between the brewing kettle and wort chiller. Today, propane is used in recreational vehicle absorption chiller refrigerators. The water is then recirculated to the chiller to be recooled. Normally, the heat from a flue powers an "absorptive chiller". The cost savings are associated with the limited use of the water chiller energy. Propylene glycol plays a significant role in the application of a glycol chiller. See the attached diagram which outlines the key components of the chiller system. In November 2011, she narrated the Chiller "The Future of Fear" horror documentary. He starred as Osmund in Christopher Smith's supernatural gothic chiller film "Black Death" (2010).