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P13623: Conductive Heat Transfer Lab Equipment. System Design Review April 5th, 2013. Project Participants. Project Sponsor : RIT KGCOE, Chemical Engineering Dept. Dr. Karuna S. Koppula Mr . Paul Gregorius MSD 1 Team Guide: Michael Antoniades Project Members:

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p13623 conductive heat transfer lab equipment

P13623: Conductive Heat Transfer Lab Equipment

System Design Review

April 5th, 2013

project participants
Project Participants

Project Sponsor : RIT KGCOE, Chemical Engineering Dept.

Dr. Karuna S. Koppula

Mr. Paul Gregorius

MSD 1 Team Guide: Michael Antoniades

Project Members:

  • David Olney - (ChemE) Project Manager
  • Todd Jackson - (ME) Project Engineer
  • AlyshaHelenic - (ChemE) Documentation Engineer
  • Edward Turfitt - (ChemE) Design/Concept Engineer
  • Charles Pueschel - (ChemE) Data Acquisition Specialist
  • Ian Abramson - (ChemE) Customer Liaison
agenda
Agenda
  • Overview of project
  • Design specifications, needs and constraints
    • Customer needs
    • Engineering specifications
    • Project deliverables
    • Functional decomposition
  • Design process
    • Concept generation
    • Functional architecture
    • Physical architecture
  • Design generation and assessment
    • Initial concepts
    • Pros and cons
    • Final proposed design
  • Final design assessment
    • Benefits and limitations
    • Feasibility
    • Risk
  • Project planning
    • Project schedule
    • Deliverables
    • Quarter goals
  • Questions
heat transfer and thermal conductivity
Heat Transfer and Thermal Conductivity
  • Heat transfer can take place from three methods (Conduction, Convection , Radiation).
  • The most valuable method to calculate a constants for one specific mode of heat transfer is to reduce or eliminate the other two modes.
project overview
Project Overview

Problem Statement:

  • Build an apparatus that can demonstrate thermal conductivity reliably to students for educational purposes.

Resources:

  • The only limitation we have is the set budget for the project.
  • (space, cart, current lab equipment, donations) excluded from budget.

Expectations:

  • The purpose of this review session is for constructive criticism, recommendations, and validation by the customer for some of our current designs that we have derived.
slide6

Design Process Flow

PRP

Functional Decomposition

Problem Definition

Engineering Matrix

House of Quality

Constraint Criteria

Define Constraints

Define Requirements

Power Source

Temperature Sensors

Heating Element

Cooling Element

Insulation Methods

Data Collection

Contact Resistance

Interchangeability

Define Systems

Research Systems

Develop Solutions

Concept Generation

External

Assess Solutions

Pugh Matrix

Design 4

Design 2

Design 3

Design 1

Generate Designs

Pro/Con List

Assess Designs

Final Design

Final Design

Design assessment

Customer Specifications review

Risk Assessment

Cost Assessment

functional architecture
Functional Architecture

Heating Element

Provide a constant heat source to the specimen

Cooling Element

Provide a constant heat sink to the specimen

Temperature Sensors

Provide a means for measuring temperature

Insulation

Minimize the amount of heat loss

Data Acquisition

Provide a means for collecting data

Power Source

Provide a means for power heating element

pros cons of design 1
Pros & Cons of Design 1

Pros

Simplicity

Cheap

Visual

Compatible with different samples

Easy to set up

Cons

Inconsistent insulation

pros cons of design 2
Pros & Cons of Design 2

Pros

Pressure can be applied to the heater

Cheap

Visual

Compatible with different length samples

Cons

Hard to swap different diameter samples

Potential air leaks because of water supply connections.

pros cons of design 3
Pros & Cons of Design 3

Pros

No convection

Compatible with different length

Pressure can be applied on both the heater and cooler

Solid insulation adds support

Cons

Complex

Longer set up times

Not completely visible

pros cons of design 4
Pros & Cons of Design 4

Pros

Limits convections

Visual

Compatible with different length and diameter samples

Pressure can be applied on both the heater and cooler

Compatible with multiple insulations

Cons

Complex

Longer set up times

More expensive

boat design
Boat Design

Removable caps allow liquid , gases, and pastes to be inserted into the boat.

Temperature sensors will be placed at set lengths within the boat so that they do not move.

The ends will be made out of a conductive medal to minimize leakage.

slide27

Physical Architecture

System

Heat conduction apparatus

Subsystem

Power source

Temperature sensor

Heating element

Cooling element

Insulation

Data Collection

Contact resistance

Multi-material

Plate heater

Screw cap (pressure)

Variable insulation method

Components

Cold plate

DAQ

Boats

Electric variable power generator

Thermocouple or silicon based temperature sensor

LCD

temperature in sample versus length
Temperature In Sample versus Length
  • Assumptions: Steady State, No conduction or convection from the air on the sample.

q = Q/A =-k(dT/dx)

Given Targets: Q = 500 W, Target ΔT = 120 K

Chosen Parameters: T0 = 273 K, D = ¾”, L = ½’

feasibility analysis
Feasibility Analysis

h

T1

T2

T4

T3

T5

  • One Dimensional Transient Analysis
  • One Dimensional Finite Difference Steady State Analysis
  • T1 and T5 will be known temperatures
  • The length of the rod and properties will be known
copper rod results
Copper Rod Results

After 1 minute

After 2 minutes

copper rod results1
Copper Rod Results

After 3 minutes

After 4 minutes

stainless steel rod results
Stainless Steel Rod Results

After 5 minutes

After 10 minutes

stainless steel rod results1
Stainless Steel Rod Results

After 20 minutes

After 40 minutes

feasibility conclusion
Feasibility Conclusion
  • Copper rod reaches steady state much quicker than the stainless steel rod.
  • In order to reach thermal equilibrium quicker, the length of the specimen can be diminished.
  • The lab can be conducted within the allotted time.
means for calculating thermal conductivity steady state
Means for Calculating Thermal Conductivity – Steady State

Where:

Rs = thermal resistance of sample

F = heat flow transducer calibration factor

Tu = upper plate surface temperature

Ti = lower plate surface temperature

Q = heat flow transducer output

Where:

K = thermal conductivity

d = thickness of sample

slide50

MSD I and MSD II Goals

and Deliverables

Project Organization

Define Customer Needs and Specs

Develop Concepts

Create System Level Design

Create Detailed Design

  • Hold System Design Review
  • Revise design based on Review
  • Create test and assembly plans
  • Write BOM
  • Order Materials
  • Hold Detailed Design Review

Update Project Plan

Design Verification

Write Technical Paper

Create Poster

Final Presentation

  • Create test plans
  • Build system
  • Verify design through testing