P13411 High Temperature Waste Pasteurizer Brian Kilger Kyle Cohn Kyle Weston Stephanie Mauro Parabolic curve
The Team Kyle Weston- Team Leader Stephanie Mauro- Thermal Engineer Kyle Cohn- Alternative Energy Engineer Brian Kilger- Materials Engineer
Agenda • Feedback (expectations and priorities for review) • Problem Definition • Customer Needs and Specs • Concept Development • Concept Selection • Feasibility • Risks and Risk Assessment • Schedule
Feedback We are Looking for from This Review • Alternative design concepts • Feasibility of materials • Compatibility of our ideas with Haiti
Problem Statement • The primary objective of this project is to transform human waste into a safe to use fertilizer using renewable energy. The waste pasteurizer must be made of materials available in Haiti and be easy to use.
Key Specifications Destroy all pathogens Reusable Easy to maintain • Provide heat to waste • Vent combustive gases • Contain pathogens • Temperature of access door (Safe handling) • Environmental durability • Safe • Easy to use • Use local resources
System Concepts • Pot on stand, heat from top and bottom • Box on stand with drawer, heat from top and bottom • Double box on group, heat from topand reflectors • Bare minimum option: hole in ground, direct sunlight only • Expensive option: box with drawer, solar panels, insulation • Complex option: heat exchanger, heated from reflectors and top
The Datums • Capetown Project • Tin box w/ tray • Pasteurized human waste in 6 hours using direct sunlight • CooKit • Cheap (~$25 USD) • Pot in bag sitting on mirrors • Not user friendly
Concept Selection Concept 1 Pugh Chart Rating: 2 Concept 3 Pugh Chart Rating: 1 Concept 2 Pugh Chart Rating: 2 • Box raised above ground in a stand • Heated from direct sunlight to top and reflected onto bottom. • Removable drawer for input/output. • Pressure relief valve to eliminate gasses. • Pot raised above ground in a stand – removable. • Heated from direct sunlight to top and reflected onto bottom. • Removable lid for input/output. • Gasses vented. • Box inside of a box • Heated from direct sunlight to top and reflected from side flaps. • Removable lid and inner box.
Feasibility [J] [W]
Feasibility • Solar irradiance data was collected from Puerto Rico using the average conditions by day for the past 40 years • Determined how many days the minimum wattage was met for 5 hours • Calculations show that 303 days will meet our needs
Any Additional Questions? Thank You All for Your Time and Feedback