Maggie Alvarado Diego Azevedo Raphael Santos Cavalcanti Natalie Levings Richard Robards Bruno Vieira

Overview Work Completed to Date –Heat Regulation –Water-heating Unit –Alternative Fuels & Engine Conversion –Expansion –Testing Collaboration with Brazil – Expansion Work Remaining Current Status Major Difficulties Schedule/Plan –Spring Schedule Conclusion

Work Completed: Heat Regulation Pipes, fittings, insulation, and valve components have been received. Measurements and cuts made for piping. Valve Bypass Piping Rotary Actuator

Work Completed: Water Heating Unit Piping measurements and cuts made, valve components on hand. Copper Piping Copper Heating Element Insulated Sides Water Distiller Bypass Piping Location of Distiller Unit

Work Completed: Alternative Fuels & Engine Conversion Conversion kit has been installed and tested with gasoline. Engine

Work Remaining Machining two butterfly valves Welding of distiller housing Receive and fill CNG tanks Install expansion valve and tank Valve

Work Remaining: Testing Temperature: K-type thermocouples Flow Velocity: Flow- meter Data Collection: LabVIEW Locations of Thermocouples        Legend: 1. Water Reservoir Inlet 2. Water Reservoir Outlet 3. Refrigeration Space 4. Conduction Circuit End 5. Exhaust 6. Bypass Piping Inlet to Distiller 7. H/X Exhaust Inlet 8. H/X Exhaust Outlet 

Collaboration with Brazil: Expansion The team continues to conduct weekly video conferences, s and file exchange: –Mathematical Model for cooling effects of rapidly expanding gas. –Design of second cool space around distiller collection unit.

Collaboration with Brazil: Expansion Mathematical Model for cooling effects of rapidly expanding gas. Depiction of gas flowing from cylinder, courtesy of John, James E., Gas Dynamics. The overall heat flux produced by the expansion of the methane gas determined by: The Darcy-Weisbach equation relates the pressure drop to the velocity of the gas: The above result is verified using the following relation for polytropic gas expansion:

Collaboration with Brazil: Expansion Preliminary Sketch for Second Cool Space

Current Status

Dr. Vargas, the UFPR Professor, is here assisting and we met to discuss our final design and progress to date. CAPS Open House this Saturday from 10 AM-2 PM Brazilian teammates will be visiting the week prior to project open house and participating in Final Presentation

Major Difficulties CNG Tank Assembly Scheduling

Schedule/Plan: Current Status

Conclusion Work Completed to Date Collaboration with Brazil Work Remaining Current Status Major Difficulties Schedule/Plan