Introduction

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Introduction. Objective is to create a field deployable automated CO 2 and N 2 O gas trapping device Trapping events occur every four hours Traps replaced after one month Components Flux Chamber Multiple Sub-chambers Desiccant Trap CO 2 Chemical Trap N 2 O Molecular Sieve Trap - PowerPoint PPT Presentation

Transcript of Introduction

Page 1: Introduction
Page 2: Introduction

IntroductionObjective is to create a field deployable automated CO2 and N2O gas trapping deviceTrapping events occur every four hoursTraps replaced after one monthComponents

Flux ChamberMultiple Sub-chambersDesiccant TrapCO2 Chemical Trap

N2O Molecular Sieve Trap

CO2 Molecular Sieve Trap

Rain-water Drop System

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System Flow Chart

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Part Selection

• Valves– Manual– Solenoid

• Pump– Flow Rate: 130 mL/min

Insert Solenoid valve PIC

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Part Slection

• Servo Mechanism– Motor

• Fan

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Material SelectionMaterials in contact with the gases must be chemically inert and gas impermeable

Outer Casing and Sub-chambersWhite PVC – avoiding the greenhouse effect

Desiccant TrapNafion Tubing

CO2 Chemical Trap304 Stainless Steel TubingCarbosorb

CO2 and N2O Traps 304 Stainless Steel TubingMolecular Sieve 5A

TubingPEEK

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Fabrication

Assembly Criteria – small profile, sturdy, and easy to use

Airtight System Fittings and Adapters

CAD DrawingsMachined in the ME Shop

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Design Visualization

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Electrical control system

o Control of servos, solenoids, circulation fans, pumps

o State machine pertaining phases of device operation operation

o Error checkingo Sensors provide information

about device functionalityo Allows for quick repair,

operation during non critical failures

o Governed by Microcontroller

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Programmable System on Chip (PSoC)

Visual, code-free embedded design

C language base

Manually edit code

CY3214-PSoCEvalUSB

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System PowerDemands of system

Operates unattended for weeks

Hours between samples

Microcontroller very demanding

The external timer

Battery decision

All-Battery.com

http://www.all-battery.com/productimages/lithium/14.8V-3150-8C.jpg
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Summary• CO2 and N2O levels will be used

to determine impact of farming• This will facilitate carbon credit

trading on global scale• Profitable to farmers• Reduces waste• Cost of end product is low• Will promote ecologically friendly

farming practices• Questions?


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