cs-ee 481 1founder’s day university of portland school of engineering programmable logic solar...
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CS-EE 481
1Founder’s DayUniversity of Portland School of Engineering
Programmable Logic Solar Radiant Heating System
AuthorsArturo Bimrose
Troy Heynderickx
Jon Sakkos
AdvisorDr. Lu, Dr. Doughty
Industry RepresentativesEE: Jonathan Fant
ME: Mitch Dec and Dana Troy of Glumac
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Agenda
• Introduction• Background• Methods• Results• Conclusions• Video
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Introduction
- Project is interdisciplinary- Troy- EE/Jon- ME/Arturo- CS
- Planning since the start of last summer- Mitch Dec and Dana Troy- Dr. Lu, Dr. Doughty and Dr. O’Halloran- Professor Nuxoll
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Background
- Solar collector- Very efficient way to heat water
- Radiant heating system- Run hot water through piping under a floor
- Microcontroller (embedded system)- Small computer with limited memory
- The aim of our project was to develop and integrate the above into a proof of concept residential heating system.
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• Radiant Heating
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• Mean Radiant Temp-Average temp of all surfaces in a room.
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• Solar Collector
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• Efficiency
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Methods- DefineDesignObtain ResourcesImplementIntegrate
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System Diagram
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Results: Mechanical
• Heating Zones
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• Plumbing
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• Solar Collector
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Results: Logic
boolean SAFE
;;;loop through each zone floor temp reading
LOOPONE
IF (Floor_Temp >= 32)
CLOSE VALVE
SAFE = false
IF (Floor_Temp < 32)
SAFE = true
IF NOTDONE, LOOPONE
;;;loop through each heating zone's ambient temp
LOOPTWO
IF(Current_Temp >= Desired_Temp)
CLOSE VALVE
IF((Current_Temp < Desired_Temp) and (SAFE))
OPEN VALVE
IF NOTDONE, LOOPTWO
;;;solar collector monitoring
IF(Water_Temp > 170)
COLLECTOR PUMP OFF
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- Control system based on:- Zone floor temps
- Zone ambient temps
- Circulation water temp
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Results: Control Unit
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Results: Control Unit
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Conclusions
- We have successfully implemented the system.- Further testing and modification to be done
- Additional functionality:- Internal heat exchanger
- Actively control flow rate for max heat transfer
- Use new serial bus as opposed to I2C for better range
- An overall success and great experience
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Demonstration
- Video
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Thank You.
Are there any questions?