lecture08

lecture08 - LECTURE 8 THERMODYNAMICS An Engineering...

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1 LECTURE 8 THERMODYNAMICS An Engineering Approach AIR CONDITIONING PROCESSES & CHEMICAL REACTIONS Dr. MinJun Kim Department of Mechanical Engineering & Mechanics Drexel University Air-conditioning Processes Heating Cooling Humidifying Dehumidifying C o l i n g a nd D e hum d f y ng H t u m
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2 Humidification 12 Moist air T 1 , ! 1 Moist air T 2 , ! 2 > ! 1 Water Injected (Vapor or Liquid) Steam Injected Liquid Injected 1 2 T 2 > T 1 ! 2 > ! 1 T 2 < T 1 ! 2 > ! 1 2 1 Dehumidification 1 2 3 Cooling coil Heating coil Dehumidifier Section Heating Section Condensated-Saturated @ T 2 atm p T m a 1 , , 1 1 " ! ! Moist air 1 2 1 2 2 % 100 # $ $ " T T 2 3 2 3 " % T T W m ! R m ! ! Distilled Water !!!!
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3 Combustion Basic Terminology Fuel : any material you burn that release heat Hydrocarbon: any molecule that is made only from hydrogen and carbon Octane: rating for gasoline Combustion: burning of fuel Reactant : the atoms or molecules that exist before and are consumed to some degree during a chemical reaction Products : the atoms or molecules that are formed after a chemical reaction occurs Internal Combustion System http://en.wikipedia.org/wiki/Thermodynamics Combustion Process Reactants ! Products Fuel + Oxidizer ! Products 1H 2 + 1/2O 2 ! 1H 2 O Stoichiometric coefficient 1 kmol H 2 + ½ kmol O 2 ! 1 kmol H 2 O 2 kg H 2
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lecture08 - LECTURE 8 THERMODYNAMICS An Engineering...

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