P16486: Test Rig to Characterize Biochar Housing Materials
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Preliminary Detailed Design

Table of Contents

Team Vision for Preliminary Detailed Design Phase

During this phase, we plan to:

What we actually did:

Drawings, Schematics, Flow Charts, Simulations

Functional Block Diagram with Redesign

Functional Block Diagram with Redesign

ETC Schematics

ETC Schematics


Subsystem Schematics

Subsystem Schematics


Redesign of Sensor Bar

 Sketch of Redesign of Sensor Bar

Sketch of Redesign of Sensor Bar

Overall Heat Transfer Model

In order to analyze the heat transfer of environmental conditions to the inside of the Biochar cylinder, the following model will be implemented:

Q=(k*A*dT)/x [W]

Where Q is the heat transfer, k is the thermal conductivity of the biochar cement, dT is the change in temperature from the outside of the surface to the inside of the surface, and x is the thickness. One dimensional heat transfer can also be assumed.

The overall objective is to determine the k value (thermal conductivity) of the biochar cement cylinder to quantify its insulation abilities. To do this, an electric heater (approximately 12 V and 60 W) will be placed in the center of the cylinder and the model will be back solved for K.

Some pros of this model include:

Sample formula

Sample formula

Prototyping, Engineering Analysis, Simulation

The simulations were done with the following assumptions:
1) Initial Temperature: 25 C
2) Convection coefficient of 20 W/(m^2.K)
3) Constant heat power of 50 W

GIF Animation

GIF Animation

At Steady State

At Steady State

Bill of Material (BOM)

Please click here for an updated Bill of Materials

P16486 Bill of Materials

P16486 Bill of Materials

Test Plans

Please click here for the team's first draft of an overall test plan.

Snap Shots of plan are featured below:

Specifications

Specifications

Acquisition Strategy

Acquisition Strategy

P16486 Test Diagram

P16486 Test Diagram

Still need to be completed

Design and Flowcharts

P16486 GUI/User Process

P16486 GUI/User Process


Code Flow

Code Flow

Code Flow with Control

Code Flow with Control

Risk Assessment

Acknowledgments

Special thank you to Dr. Robert Stevens from the Mechanical Engineering Department in KGCOE at RIT for helping us develop our theory for the heat transfer analysis.

Plans for next phase

• Have all major subsystems adequately reviewed
• Get approval to begin ordering parts and materials
• Expected performance against engineering requirements
• Wrap up final designs for the project
• Tie up loose ends, so we can be well prepared for the building phase
• Understanding how we will be testing each component of the ETC

Kimberly's 3 Week Plan
Lakeshia's 3 Week Plan
Domenico's 3 Week Plan
Prasanna's 3 Week Plan
Sari's 3 Week Plan


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