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Maggie Alvarado Diego Azevedo Raphael Santos Cavalcanti Natalie Levings Richard Robards Bruno Vieira PowerPoint Presentation
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Tri-generation System: Final Design Review. Maggie Alvarado Diego Azevedo Raphael Santos Cavalcanti Natalie Levings Richard Robards Bruno Vieira. Overview. Introduction Previous System Problems with the Current System Collaboration with Brazil Modifications Heat Regulation

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Presentation Transcript
slide1

Tri-generation System:

Final Design Review

Maggie Alvarado

Diego Azevedo

Raphael Santos Cavalcanti

Natalie Levings

Richard Robards

Bruno Vieira

overview
Overview
  • Introduction
    • Previous System
    • Problems with the Current System
    • Collaboration with Brazil
  • Modifications
    • Heat Regulation
    • Water-heating Unit
    • Alternative Fuels & Engine Conversion
    • Expansion
    • Modifications Parts
  • Schedule/Plan
    • Fall Schedule
    • Proposed Spring Schedule
  • Conclusion
introduction current system
Introduction: Current System

Last year students from FAMU/FSU College of

Engineering and the Federal University of Paraná collaborated to design a tri-generation system producing:

  • Electricity
  • Refrigeration
  • Hot Water

The wasted heat from exhaust gas

was used to produce hot water &

refrigeration.

Tri-Generation system built last year.

introduction problems with current system
Constant supply to refrigeration system needs to be controlled.

Water-heating unit exceeding maximum temperature

Engine only runs off of gasoline.

Introduction: Problems with Current System

Tri-generation System Previously Built

introduction collaboration with brazil
Introduction: Collaboration with Brazil
  • Together the two groups will do the following:
    • Automate heat supply to absorption refrigerator
    • Manage heat to water supply and add a distiller
    • Modify engine for CNG (compressed natural gas) and propane
    • Use cooling effects of expanding gas
modifications heat regulation
Modifications: Heat Regulation

Bypass Pipe

  • Thermostat
  • Damper Actuator
  • Damper/

Butterfly Valve

  • Bypass Pipe

Exhaust Piping in Current System with Bypass Valve

modifications heat regulation1
Modifications: Heat Regulation

Damper/Butterfly Valve

modifications heat regulation2
Modifications: Heat Regulation
  • Devices
  • Actuators
  • Used to position and control air dampers.  
  • Actuator moved to new position until system requirement is met and then stops.
  • Proportionalinput signal provides the best control since actuator constantly being positioned in response to system requirements.
  • Actuatorswith spring returncan be set to return damper from either direction and have manual crank for precise adjustment.      

Actuators are adjustable

for clockwise and

counterclockwise

rotation from 0° to 90°

 (unless noted).

modifications water heating unit
Modifications: Water-Heating Unit
  • Hot-Water-on-Demand
    • Bypass piping will reroute exhaust heat when water-heating unit not in use

Bypass Piping

Depiction of Bypass Piping

Valve controlling exhaust flow

modifications water heating unit1
Modifications: Water-heating Unit
  • Addition of Distiller
    • Takes advantage of excess exhaust heat to produce clean water
modifications alternative fuels engine conversion
Modifications: Alternative Fuels & Engine Conversion
  • Compressed Natural Gas (CNG) has been chosen as it can be stored at the high pressures required for the expansion
  • The Carb Turbo #720-FD501-5 adapter kit was selected for our engine

Storage Tanks for CNG

modifications alternative fuels engine conversion1
Modifications: Alternative Fuels & Engine Conversion

How it Works:

  • The carburetor adapter is installed between the gasoline carburetor and the air cleaner
  • The adapter has a hose connecting it to the demand type regulator
  • A venturi at the center of the adapter, producing a vacuum, thus drawing fuel into the airstream
  • Amount of fuel delivered depends on how much air is flowing, which depends on how far the throttle is open

Conversion Kit Attached to Engine

modifications alternative fuels engine conversion2
Modifications: Alternative Fuels & Engine Conversion

Heating Value

Mass Flow Rate

Input Heat

Heat Lost in Exhaust

Temperature Change

Exhaust Temp.

modifications expansion
Modifications: Expansion

Collaboration with Brazil

  • The Brazilian team members have been working on the effects of the gas expansion and here are the results…..

Refrigerator that will be cooled by expansion

modifications expansion1
Modifications: Expansion

Please Refer to the Live Feed

modifications parts
Modifications: Parts
  • Alternative Fuels
    • Conversion kit
    • Fuel tanks
  • Refrigeration Heat Regulation
    • Bypass Piping
    • Actuator
    • Machining valve
  • Water-heating Unit
    • Bypass Piping
    • Machining Valve
    • Distiller
  • Expansion
    • Regulating Valve
    • Piping

Parts to be Purchased

To be Machined

To be designed in Brazil!

conclusion
Conclusion

Final Design Package Deliverables:

  • Bypass piping, valve and actuator to control heat supply to absorption refrigerator
  • Water-heating unit heat bypass and distiller addition
  • Conversion for engine to run off of CNG, propane, and gasoline
  • Using expansion of CNG to cool refrigerator
references
References

1. Dieter, George E. Engineering Design 3rd Edition. New York, NY: McGraw Hill Higher Education, 2000.

2. Çengel, Yunus A. and Robert H. Turner. Fundamentals of Thermal-Fluid Sciences 2nd Edition. New York, NY: McGraw Hill Higher Education, 2005.

3. Tracy, Thomas Jr., et al. Development of a Tri-Generation System: Final Design Package, Spring 2006. CAPS 1: Integrated Heat Recovery System.

4. Janna, William S. Design of Thermal Fluid Systems 2nd Edition. Boston, MA: PWS Publishing Company, 1998.