1. The University of Texas at Austin Spring 2019
CAEE Department, Architectural Engineering Program
Course: Building Environmental Systems, ARE 346N
All course information:
Prerequisites: Physics 303L and 103N – Engineering Physics &Lab
(ME 320/326 co-requisite)
Professor: Dr. Atila Novoselac
ECJ, 5430
Office (512)
Office Hours: Tuesday and Thursday 12:30 PM – 1:30 PM
Contacting me
Web site not operational yet
Office – come see me, come see me, come see me,
Call me. Fax me.
me if youmust. Fine for quick answers, to let me know that you are going to miss a class

2. Lecture Objectives Discuss the syllabus and ground rules
Describe scope of BES
Introduce the course themes
Address any of your concerns
Start with fundamentals
Energy
Thermal Comfort

3. Structural vs. Environmental Systems in buildings3

4. Real world questions For example, you specialize structural systems:
It is 4pm on the day before you need to submit the plans. Your mechanical engineer comes to you and tells you that that the structural change that you approved will cost $50K in additional ducts and equipment. What do you do?

5. Real world questions
A salesperson tells you that changing your dropped ceiling and roof insulation strategy is guaranteed to save you 1/3 of your building energy costs. Your roofing contractor tells you that it is impossible to build the roof in the specified manner without causing moisture problems.
Who should you believe?

6. Why to study building systems

7. Why to study building systems

8. Why to study building systems

9. Buildings
Building construction (including design) is one of the largest industries in the world
Environmental systems are a central part of every building
Affect:
Energy consumption
Thermal comfort and IAQ
First cost

10. Course Objectives
Describe the role of building environmental systems in building planning and design
Research and critically analyze claims about building environmental systems made by salespeople, subcontractors, and building designers
Calculate building heating, ventilating, and air conditioning loads and specify HVAC equipment for residential and light commercial construction.
Define design requirements for building electrical systems and design basic systems
List characteristics of different lamps, describe building lighting designs and their consequences and demonstrate knowledge of lighting design principles
First is overall theme – relevant to everyone
2nd also relevant to everyone
example of mechanical engineer resisting your change
Project manager- knowledge of planning for BES stages
4 main areas – HVAC, electrical, lighting, plumbing
Noise control and acoustics – if we have time

11. Prerequisites
Physics 103M and 303L
ME 320/326: Thermodynamics

12. Preparation for FE exam - Career in industry - step towards PE exam
Preparation for ARE 465
Capstone design seminar
Prepare you for BES portion
Background material
Resources
Calculation familiarity
Preparation for FE exam - Career in industry - step towards PE exam

13. Textbook
Tao and Janis (2004) 3rd or (2009) 4th Edition Too few examples
- I will add more
Some important area not adequately covered
- I will provide handouts
Very appropriate for those who want one textbook for ARE465 and won’t be doing BES after graduation

14. “References”
Trost, J., (1999), Efficient Building Design Series Volume 1: Electrical and Lighting, Prentice Hall.
Very good textbook
many examples
Cover only Lighting and Electrical systems
Library does not have it yet
Textbook: Tao and Janis
-Good reference source
-(relatively inexpensive)
-fewer errors
Stein and Reynolds- comprehensive, but many errors
BES bibliography – continuously adding to the list with commentary
ASHRAE – professional organization – the reference

15. “References”
Heating Ventilating and Air Conditioning Mcqusiton, Spittler, Parker (2000)
Common textbook for undergraduate HVAC class
Good descriptions
Many examples
Much more in-depth than we will use
Not used for HVAC design classes here at UT
You should get this if you want a readable text on HVAC

16. “References” ASHRAE Handbook: Fundamentals.
IP or SI edition, hard copy or CD
In reference Library section
Note that it is much cheaper to become a member of ASHRAE to get this text.
Great and very complete reference
Few examples, very hard to read, inexpensive
Most appropriate for those who want the industry-standard reference and intend on having BES be a part of their future

17. ASHRAE Membership
ASHRAE - American Society of Heating, Refrigeration and Air-conditioning Engineers
- predominant BES Society
Inexpensive way to get textbook

18. Grading Quizzes 10% Midterms (total 2) 30% Projects 15%
Homework Assignments 20%
Participation %
Final Exam %
100%
Quizzes – 9 of them – every Wednesday (unless otherwise noted)
Midterm October 16th, Wednsday
Project
Homework (every week or two) – if you do the homework and come to class –
Participation – 5% internet resources, completing homework assignment, participating in class discussions, coming to see me, fieldtrips and guest speakers
Final Exam – sorry about the time

19. Quizzes: periodically at the beginning of the class - 5 quizzes, 10 minutes long each - quiz will be announced in previous class Projects: Midterm and Final Homework Assignments: During the whole course

20. Final Exam
Optional IF
You get a C (73%) or better on both midterms
You give me written notification that you don’t want to take final exam by May 9th (last class day)
If you meet the above criteria and don’t take the final, your midterm grades will represent 50% of your final grade

21. Participation My assessment of your participation in the class
5% of total grade
How to get participation points
Come to class
Submit all assignments/projects on time
Participate in class (verbal)
Come see me in my office
Participate in all field trips

22. Topics 1. Background and Introduction 0.5 wk
2. HVAC Systems Motivation and Basics 2.5 wks
3. Heating and Cooling Load Calculations 2 wks
4. Heating and Cooling Equipment 1 wk
5. Air Systems and Delivery Equipment 1 wk
6. Electricity Theory 2 wks
6. Electrical Systems wks
7. Lighting Introduction and Equipment 1 wk
8. Lighting Calculation and Design 1 wk
Priorities
HVAC first
Lighting Second
Electrical
Plumbing and Noise control - important, but we don’t have time
New professors

23. TENTATIVE COURSE SCHEDULE
Note funny ordering of chapters
Air systems – ventilation and IAQ
controls
Additional review before midterm
Project assignment
Lighting

24. Course Website
Class notes will be posted in the morning of the lecture
Look at Assignments sections
if there is any contradicting information (i.e. date for the filed trip or similar) the relevant information is the one that I provide in class!
Used prometheus

25. Suggestions/Requests
Please try to use office hours for questions problems and other reasons for visit
Each Tuesday and Thursday I am most of the day in ECJ
Please don’t use to ask me questions which require long explanations
Come to see me
I accept suggestions
I will listen your comments
The more specific the better

26. Questions ?

27. Energy and Power
HVAC is largest component of energy use
Lighting is second
Lighting might be smaller portion – including cooling to make up for heat of lighting
Energy isn’t only criteria,
Note: Heat energy is often measured in Watt- hour, and heat flow in Watts

28. Thermal Energy

29. Electric Energy

30. Important to know!
We learned that electric and thermal energy have the same units (when we use SI system). Question: Is 1 kWh of electric energy same as 1 kWh of thermal energy ?

31. Basic energy principles
Primary
Energy
Site vs. Primary Energy
Site (End-use) energy is the energy directly consumed by end users
Primary energy is site energy plus the energy consumed in the production and delivery of energy products
Light
Thermal
Fresh
air
HVAC System
Site energy (End use)
HVAC – Heating, Ventilation and Air-Conditioning
Site
Energy
Primary
Energy
Distribution
Storage
Generation

32. Thermal Comfort
Definition

33. Thermal Comfort
We need to be in thermal balance

34. Thermal balance Energy loss (work and heat) = energy production
Heat loss by: convection, radiation, conduction, evaporation