THE HEETE PROJECTTHE HEETE PROJECT

A Study of High Efficiency Housing Technologies and Energy A Study of High Efficiency Housing Technologies and Energy

CalculationCalculation

THE HEETE MODEL

-H Home

-E Energy

-E Efficient

-H Home

-E Energy

-E Efficient-E Efficient

-T Technology

-E Evaluator

-E Efficient

-T Technology

-E Evaluator

PRESENTATION OUTLINE

�Project Introduction

�Project Definition

�Development

�Model Validation�Model Validation

�Results

�Project Review

PROJECT INTRODUCTION

� EnvironmentEnvironmentEnvironmentEnvironment� Greater than 90% of all households in Canada use Non-renewable energy sources for heating.

� EconomicsEconomicsEconomicsEconomics� 65% of all dwellings in Canada are single detached houses.65% of all dwellings in Canada are single detached houses.

� EducationEducationEducationEducation� This model uses much of the theory examined throughout engineering.

� This model allows for creative and critical thought in many areas.

PROJECT DEFINITION

� Initial Objective:Initial Objective:Initial Objective:Initial Objective:

� Create and confirm an energy usage model for standard

dwellings in the St. John’s NL region.

� Overall Objectives:Overall Objectives:Overall Objectives:Overall Objectives:Use the model to view the economic impact of various � Use the model to view the economic impact of various changes in home layout/equipment.

� Expand and simplify the inputs of the model for use by average individuals in an attempt to better inform the public of their options in energy use reduction.

INITIAL DEVELOPMENT

� Primary Model InclusionsPrimary Model InclusionsPrimary Model InclusionsPrimary Model Inclusions� Weather

� Construction

� Heat Losses

� Renewable

Human Activity

EnvironmentEnvironmentEnvironmentEnvironmentEnvironmentEnvironmentEnvironmentEnvironment

� Human Activity

� HVAC

� Costing

ContentsContentsContentsContentsContentsContentsContentsContents

ConstructionConstructionConstructionConstructionConstructionConstructionConstructionConstruction

INITIAL DEVELOPMENT

� Processing requirementsProcessing requirementsProcessing requirementsProcessing requirements� User Input

� Archive Data

� Control

� Post Processing

Output� Output

DESIGN APPROACH

� Modular Modular Modular Modular ---- Parallel DesignParallel DesignParallel DesignParallel Design

1. Problem broken into “Modules”

2. Data flow decided.

3. Input and Output constraints set.3. Input and Output constraints set.

4. Independent module construction.

5. Module combination and integration.

Calculation

CALCULATION DATA FLOW

Renewables

Module

Weather

Module

HAM

UI

Module

Control

MACRO CONTROL DIAGRAM

Calculation

Modules

HVAC

Module

Energy

Module

HAM

EHLM

Post

Process

Control

Module

Logging Output

USER INTERFACE (UI)

� ChallengesChallengesChallengesChallenges� Human

� User knowledge

� Required Input

� Appropriate Output

� Technical� Technical� Data Transfer

� SolutionsSolutionsSolutionsSolutions� Simplified Inputs

� Human testing throughout

WEATHER

� ChallengesChallengesChallengesChallenges� Accurate Weather Modelling

� Accurate Solar Modelling

� SolutionsSolutionsSolutionsSolutions� Incorporation of Linear Interpolation� Incorporation of Linear Interpolation

� US Naval Observatory –� Solar Radiation Model

� Sunrise/Sunset Model

HUMAN ACTIVITIES MODULE (HAM)

� ChallengesChallengesChallengesChallenges� Simulate the Amount of Energy Used on a Daily Basis

� Capture Energy Used From Major Appliances

� Capture Seasonal Variances

� SolutionsSolutionsSolutionsSolutions� SolutionsSolutionsSolutionsSolutions� Determine Daily Averages

� Vary Daily Averages Periodically

� Capture Annual Appliance Consumption

� Vary Lighting Load Based on Sun Condition from Weather Module

ENVIRONMENTAL HEAT LOSS (EHLM)

� ChallengesChallengesChallengesChallenges� Areas of investigation

� Formation of heat transfer model

� SolutionsSolutionsSolutionsSolutions� Numerical solutions to complex convection/radiation heat transfer problems

� Numerical solutions to complex convection/radiation heat transfer problems

� Evaluation of preliminary solutions and according simplifications

CONTROL

� ChallengesChallengesChallengesChallenges� Create a robust solution for managing and recording data

� Provide a mechanism for data management

� SolutionsSolutionsSolutionsSolutions� Leverage the VBA API in Excel to maximize capabilities and functionality

� Leverage the VBA API in Excel to maximize capabilities and functionality

MODEL VALIDATION

� Areas of validationAreas of validationAreas of validationAreas of validation� Energy usage

� Methods of validationMethods of validationMethods of validationMethods of validation� Local trial cases

� National studies� National studies

� Existing models

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4000

4500

Model Data

Supplied Data

MODEL (INPUT)

MODEL (INPUT)

SUMMARY OF RESULTS

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$150.00

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$250.00

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$400.00

Montly Energy CostMontly Energy CostMontly Energy CostMontly Energy Cost

$-

$50.00

$100.00

0.00

20.00

40.00

60.00

80.00

100.00

120.00

140.00

Average Daily Usage (kWh)Average Daily Usage (kWh)Average Daily Usage (kWh)Average Daily Usage (kWh)

PROJECT REVIEW� Process ReviewProcess ReviewProcess ReviewProcess Review

� Content ReviewContent ReviewContent ReviewContent Review

PROCESS REVIEW

� Modular Modular Modular Modular –––– Parallel strategyParallel strategyParallel strategyParallel strategy� Quite effective for this project.

� Clear Definition important.

� Team Communication.

� Piecewise Testing

CONTENT REVIEW

� HEETE ProjectHEETE ProjectHEETE ProjectHEETE Project� Wider range of functionality

� Further de-bugging

� ModulesModulesModulesModules� User Interface� User Interface

� Increased simplicity and robustness required

QUESTIONS

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