1. Erik Cates ME 3322

2.  Uses a heat source(gas or propane) to run a cooling process  Cooling is caused by heat absorption by refrigerant as it is evaporated, which removes it from the system  Refrigerant gas is then converted back to liquid form to repeat cycle  Most commonly used refrigerant is Ammonia

4.  Generator- receives heat from source, produces ammonia gas  Separator- separates ammonia gas from water  Condenser- hot ammonia gas is cooled, condensed to liquid form  Evaporator- evaporates ammonia liquid, creates cold effect inside refrigerator  Absorber- absorbs ammonia gas into water

5.  Dalton’s Law- the total pressure from gas mixture is sum of all partial pressures  Hydrogen doesn’t react with ammonia- hydrogen simply takes up space  In evaporator- hydrogen/ammonia mixture causes the partial pressure of ammonia to be lowered, which lowers the boiling point of the ammonia to below room temperature

6.  No moving parts  Doesn’t require electricity  Quiet  Makes use of excess heat  No HCFC’s – harmful to environment

8.  http://en.wikipedia.org/wiki/Absorption_ref rigerator  http://home.howstuffworks.com/refrigerator5.htm  http://www.solarmirror.com/cgi- bin/faq.cgi?_recurse=1&file=17  http://www.martinsburgrv.com/images/feat ured/21_62.jpg