8/4/2019 383 NO01 Class Intro
http://slidepdf.com/reader/full/383-no01-class-intro 1/41
The University of Texas at Austin Fall 2011
CAEE Department, Architectural Engineering Program
Course: Energy Simulation in Building Design
Instructor: Dr. Atila Novoselac
ECJ, 5.422
Office (512) 475-8175
e-mail: [email protected]
http://www.ce.utexas.edu/prof/Novoselac
Office Hours:
Tuesday and Thursday 11:00 a.m. – 12:00 p.m.
8/4/2019 383 NO01 Class Intro
http://slidepdf.com/reader/full/383-no01-class-intro 2/41
Lecture Objectives:
• Discuss the syllabus
• Describe scope of the course
• Introduce the course themes
• Address any of your concerns
• Heat transfer review
8/4/2019 383 NO01 Class Intro
http://slidepdf.com/reader/full/383-no01-class-intro 3/41
Introduce yourself
• Name
• Background• academic program
• Graduate/undergraduate or auditing
8/4/2019 383 NO01 Class Intro
http://slidepdf.com/reader/full/383-no01-class-intro 4/41
Motivation for learning about
Energy Simulation in Building Design
Buildings:
• Responsible for ~40% of total energy consumption in U.S.
• Affect the CO2
emission
• Building energy systems with the building envelope affect:
• Energy consumption – operation cost
• First cost – capital cost
• Thermal comfort and IAQ
Energy analysis for
- Optimum balance between operational and capital cost
8/4/2019 383 NO01 Class Intro
http://slidepdf.com/reader/full/383-no01-class-intro 5/41
Motivation: Recognize inaccuracy in
energy related technology statements
8/4/2019 383 NO01 Class Intro
http://slidepdf.com/reader/full/383-no01-class-intro 6/41
What do you think about this
statement?
In the article an advertiser claim 30%saving on electricity bill.
8/4/2019 383 NO01 Class Intro
http://slidepdf.com/reader/full/383-no01-class-intro 7/41
Energy consumption in Austin’s
residential house
2000(15,600 kWh)Including gas
CoolingMiscellaneous
Range
Dryer
Heating
Lighting
Hot water
Refrigerator
Washer
8/4/2019 383 NO01 Class Intro
http://slidepdf.com/reader/full/383-no01-class-intro 8/41
Target value for a new house in AustinNew single family 2262 sf, 2-story home
0
2000
4000
6000
8000
10000
12000
14000
16000
18000
2000 2006 2010 target (2015)
Miscellaneous
Washers
Range
Refrigerator
Lighting
Dryer
Hot water
Heating
Cooling
15620 kWh
12862 kWh
11304 kWh
7086 kWh
8/4/2019 383 NO01 Class Intro
http://slidepdf.com/reader/full/383-no01-class-intro 9/41
Student interested in
Sustainable Design
LEED - Leadership in Energy and Environmental
Design
1) LEED Certification require that building has analysis
related to energy performance
2) All government buildings require energy analysis
8/4/2019 383 NO01 Class Intro
http://slidepdf.com/reader/full/383-no01-class-intro 10/41
Samsung R&B Building
What is Energy Analysis ?
UT Solar Decathlon House 2007
8/4/2019 383 NO01 Class Intro
http://slidepdf.com/reader/full/383-no01-class-intro 11/41
Example of energy modeling for building optimization
Design iterations to optimizeshape and energy use
Solutions:
•passive shadings
•positions and area of windows
•insulation value
•tightly sealed envelope
•high-performance window
•position of solar collectors
Architectural models Energy-simulation models
Designiterations
8/4/2019 383 NO01 Class Intro
http://slidepdf.com/reader/full/383-no01-class-intro 12/41
Example of Solar Analysis for the
Pecan Street Project Demo House
Solar panels
8/4/2019 383 NO01 Class Intro
http://slidepdf.com/reader/full/383-no01-class-intro 13/41
Heat and mass transfer in buildings
8/4/2019 383 NO01 Class Intro
http://slidepdf.com/reader/full/383-no01-class-intro 14/41
Energy simulation software
Simulation SoftwareGarbage IN Garbage OUT
8/4/2019 383 NO01 Class Intro
http://slidepdf.com/reader/full/383-no01-class-intro 15/41
1. Identify basic building elements which affect building energyconsumption and analyze the performance of these elements using
energy conservation models.2. Analyze the physics behind various numerical tools used for solving
different heat transfer problems in building elements.
3. Use basic numerical methods for solving systems of linear and
nonlinear equations.4. Conduct building energy analysis using comprehensive computer
simulation tools.
5. Evaluate performance of building envelope and environmental
systems considering energy consumption.6. Perform parametric analysis to evaluate the effects of design
choices and operational strategies of building systems on buildingenergy use.
7. Use building simulations in life-cycle cost analyses for selection of energy-efficient building components.
Course Objectives
8/4/2019 383 NO01 Class Intro
http://slidepdf.com/reader/full/383-no01-class-intro 16/41
Prerequisites
• ARE 346N Building Environmental Systems
• ME 320 Thermodynamics
or similar courses
Knowledge of the following is beneficial:
- Heat transfer- Numerical methods
- Programming
8/4/2019 383 NO01 Class Intro
http://slidepdf.com/reader/full/383-no01-class-intro 17/41
Textbook
Energy Simulation in Building Design
J A Clarke, 2002 (2nd Edn)
8/4/2019 383 NO01 Class Intro
http://slidepdf.com/reader/full/383-no01-class-intro 18/41
Textbook
References:1) 2001 ASHRAE Handbook: Fundamentals.
IP or SI edition, hard copy or CD
2) Numerical Heat Transfer and Fluid Flow
S V Patankar, 1980
3) Solar Engineering of Thermal Processes
John A. Duffie, William A. Beckman, 1991
4) Design of Thermal Systems
W. F. Stoecker, 1998
8/4/2019 383 NO01 Class Intro
http://slidepdf.com/reader/full/383-no01-class-intro 19/41
Handouts
• Copies of appropriate book sections
• Book from the reference list
• I will mark important sections• Disadvantage - different nomenclature and terminology
• I will point-out terms nomenclature and terminology
differences
• Journal papers
• Related to application of energy simulation programs
8/4/2019 383 NO01 Class Intro
http://slidepdf.com/reader/full/383-no01-class-intro 20/41
Other books for reading
• ASHRAE Fundamentals• Great and very complete reference about HVAC and heat transfer
• Heating Ventilating and Air ConditioningMcqusiton, Spittler, Parker (2000) • Basic knowledge about HVAC systems
• Fundamentals of Heat and Mass TransferIncropera, Witt, (2001)• Excellent reference and textbook about fundamental of Heat transfer
8/4/2019 383 NO01 Class Intro
http://slidepdf.com/reader/full/383-no01-class-intro 21/41
Energy simulation (ES) software
• We are going to learn to evaluate:• importance of input data
• effects of simplification and assumptions
• accuracy of results
for each ES program
• We are going to talk about several most commonly usedES programs
• Concentrate on eQUEST – for projects and homework's
http://www.doe2.com/equest/
8/4/2019 383 NO01 Class Intro
http://slidepdf.com/reader/full/383-no01-class-intro 22/41
8/4/2019 383 NO01 Class Intro
http://slidepdf.com/reader/full/383-no01-class-intro 23/41
Why eQUEST software
• It is free - you can take it to your future company
• It has user-friendly interface
• It has built in functions for economic analyses
• It is based on well tested DOE2 ES program
There are certain limitations
limited number of HVAC system
8/4/2019 383 NO01 Class Intro
http://slidepdf.com/reader/full/383-no01-class-intro 24/41
Topics
1. Course Introduction and Background 0.5 wk
2. Fundamentals of energy mass transfer 1.5 wks
3. Thermal analysis of building components 2 wk
4. Numerical methods 2 wks5. Energy simulation tools 1 wk
6. Introduction to DOE2(eQUEST) software 1 wk
7. Building envelope analyses 2 wks
8. HVAC System analyses 2 wks
9. Parametric Analyses 2 wks
8/4/2019 383 NO01 Class Intro
http://slidepdf.com/reader/full/383-no01-class-intro 25/41
eQuest software
8/4/2019 383 NO01 Class Intro
http://slidepdf.com/reader/full/383-no01-class-intro 26/41
8/4/2019 383 NO01 Class Intro
http://slidepdf.com/reader/full/383-no01-class-intro 27/41
Test 25%
Homework Assignments 30%Midterm Project 10%
Final Project & Presentation 30%
Classroom Participation 5%100%
Grading
8/4/2019 383 NO01 Class Intro
http://slidepdf.com/reader/full/383-no01-class-intro 28/41
Grading
Undergraduate Graduate
> 90 A > 93 A
80-90 B 90-93 A-70-80 C 86-90 B+
60-70 D 83-86 B
< 60 F 80-83 B-< 80 C-, C, C+
8/4/2019 383 NO01 Class Intro
http://slidepdf.com/reader/full/383-no01-class-intro 29/41
Participation 5%
• How to get participation points
• Come to class
• Participate in class
• Come see me in my office
8/4/2019 383 NO01 Class Intro
http://slidepdf.com/reader/full/383-no01-class-intro 30/41
Midterm Exam 25%
• October 25 (will be confirmed)
• Out of class time exam (2 hours)
• Problems based on topics cover in first part
of the course
8/4/2019 383 NO01 Class Intro
http://slidepdf.com/reader/full/383-no01-class-intro 31/41
Homework 30%
Total 3
• HW1
Solar radiation problem
• HW2 , HW3
Problems related to building heat transfermodeling
8/4/2019 383 NO01 Class Intro
http://slidepdf.com/reader/full/383-no01-class-intro 32/41
Midterm Project 10%
• Individual project
1) Use of eQUEST (or EnergyPlus)
simulation tool for building envelope
analysis
- Primary goal is to get familiar with the software
2) You can suggest your own problem
- modeling
8/4/2019 383 NO01 Class Intro
http://slidepdf.com/reader/full/383-no01-class-intro 33/41
Final Project 30%
1) Use of simulation tool (commerciallyavailable or your) for detail energy analysis
- Energy analysis of building envelope and HVAC systems
- Problems related to your future career
- Problems related to your internship
2) Problem related your MS or PhD thesis- You propose
• Project seminar
8/4/2019 383 NO01 Class Intro
http://slidepdf.com/reader/full/383-no01-class-intro 34/41
Project Topic Example
• Pecan Street Project - Demonstration House
• Real project – building connected to smart grid
• Optimization of
• Envelope
• HVAC systems
• Solar panels
• Facade Thermal Lab at UT SOA• Design and optimization of
thermal storage systems
8/4/2019 383 NO01 Class Intro
http://slidepdf.com/reader/full/383-no01-class-intro 35/41
Course Website
All course information:
http://www.ce.utexas.edu/prof/Novoselac/classes/ARE383/
• Your grades and progress on Blackboard
• Look at assignments and handout sections
• Class notes posted in the morning before the class
• PLEASE LET ME KNOW ABOUT ERRORS
8/4/2019 383 NO01 Class Intro
http://slidepdf.com/reader/full/383-no01-class-intro 36/41
Units System
We will use both SI and IP unit system
• Research: SI
• HVAC industry including architectural andconsulting companies IP
First part of the course more SISecond part of the course more IP
8/4/2019 383 NO01 Class Intro
http://slidepdf.com/reader/full/383-no01-class-intro 37/41
8/4/2019 383 NO01 Class Intro
http://slidepdf.com/reader/full/383-no01-class-intro 38/41
Any Questions ?
8/4/2019 383 NO01 Class Intro
http://slidepdf.com/reader/full/383-no01-class-intro 39/41
Assignment 0
• Your motivation and expectation
• Due on Tuesday
8/4/2019 383 NO01 Class Intro
http://slidepdf.com/reader/full/383-no01-class-intro 40/41
Review - Heat transfer
• Convection
• Conduction
• Radiation
Example Problem –radiant barrier
8/4/2019 383 NO01 Class Intro
http://slidepdf.com/reader/full/383-no01-class-intro 41/41
Example Problem – radiant barrier
in attic