Presentation on theme: "Rotary Steam Engine Group Members: Brent Bass, Kenneth Ewa, Jesse Buck, Christian Diaz, Shane Gillispie, Michael Hargett, Dylan Hinson, Jonathan Labonte,"— Presentation transcript:
Rotary Steam Engine Group Members: Brent Bass, Kenneth Ewa, Jesse Buck, Christian Diaz, Shane Gillispie, Michael Hargett, Dylan Hinson, Jonathan Labonte, Andre Lawrence, Franklin Spruill, David Allgood
Nondisclosure Agreement Some vital materials used are subject to a signed non-disclosure agreement. Please respect that some questions may not be fully explained due to the NDA.
Combustion Using six different fuels (natural gas (methane), propane, diesel, biodiesel, gasoline, ethanol (E100)), final testing was completed. Have only fully tested Diesel Fuel. Flame temperature was fixed as we solved our equation for Q (heat transfer in kJ/kmol) of the fuel. Each fuel underwent a cost analysis and a feasibility study. Average MPG of a Semi-Truck is about 4-7 miles per gallon *miles per gallon, ideal basis. Ranged from Tp (flame temp) of 800 Fahrenheit (top) to 1200 Fahrenheit (bottom) (Diesel Fuel) MPG (miles per gallon) Results:Price UNITS:$/Gallon or GGE NG (Methane)2.05 Propane2.96 Gasoline(Octane)3.45 Ethanol3.04 Biodiesel(20%)B24.02 Diesel3.91
Combustion of Diesel Fuel
Boilers and Chemical Treatments How chemical treatment works -Controls metal oxide deposits that cause corrosion using a unique polymer -Uses a phosphate buffer that controls ph levels in the water that from becoming to low (acidic)
Corrosion in Boilers
Boiler after Inhibitors are added * through feed water
Chemical Treatment Product: OptiSperse* HP54674 (aqueous solution) (can be used by itself without additional products) Product Claims Outstanding protection against metal oxide deposition and caustic corrosion Designed and field proven for high pressure boilers Cost-effective program cuts downtime and maintenance Provides optimum pH/phosphate control Corrosion in a boiler
Engine Superheated steam is injected to the right of each red slide. Uses the energy of the steam to turn the rotor creating shaft power. Coated in a hard and frictionless material to reduce losses.
Engine In the engine analysis, a preliminary model of the single core Spindyne engine has been constructed. Above numbers are directly proportional to number of cores used in engine design. Tri-core engine at nominal conditions 211 Hp and 1111 ft/lb of torque
Condenser/ Pump Condenser turns the steam from exhaust vapors back into water in order to reuse it for the steam cycle. Ideal condenser calculations assume a constant pressure process. Metal foam used inside cooling tubes to increase heat transfer. Use of cooling fins along with air flow to cool steam Assumed size is 3 x3, dimension of tubes to be determined. Materials research of condenser materials ongoing
Metal Foam Has increased surface area per unit volume Copper foam has greater thermal conductivity Copper: 5.84 BTU/hr-ft-F Aluminum:3.4 BTU/hr-ft-F
Feed Water Pump Feed water pump used to increase the pressure of the water leaving the condenser and return the water to the boiler. Ideal Model: Pump analysis assumes reversible adiabatic compression process. Through our model of the pump Pump power: 0.39HP Inlet State: F, 7.25psia Outlet State: F, 800psia Pump Cavitation Degrades pump performance Destructive to internal components
Condenser and Pump For the condenser analysis, we attempted to form a model for use for heat and mass transfer analysis We believe that the existing model is not feasible because the use of metal foam inside the cooling tubes will present performance issues in the system. Through our model of the condenser and pump Condenser heat rejection (Ql): BTU/s Currently researching commercial water pump to handle these conditions. High-pressure Triplex Pressure Pump which requires 1.7 PSI will not work.
Miscellaneous Thermal efficiency of the cycle ((Wengine-Wpump)/Qhigh) will be determined once further perfection of data occurs. We are expecting around a 25% efficiency. Carnot current operating conditions = 45.87% Cost analysis of the desired materials used in the engine and the rest of the system is ongoing. FE analysis