The University of Texas at Austin Spring 2019 CAEE Department, Architectural Engineering Program Course: Building Environmental Systems, ARE 346N All course information: http://www.ce.utexas.edu/prof/Novoselac/classes/ARE346N/ Prerequisites: Physics 303L and 103N – Engineering Physics &Lab (ME 320/326 co-requisite) Professor: Dr. Atila Novoselac ECJ, 5430 Office (512) 475-8175 e-mail: atila@mail.utexas.edu http://www.ce.utexas.edu/prof/Novoselac 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. E-mail me if youmust. Fine for quick answers, to let me know that you are going to miss a class

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

Structural vs. Environmental Systems in buildings 3

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?

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?

Why to study building systems

Why to study building systems

Why to study building systems

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

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

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

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

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

“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

“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

“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

ASHRAE Membership ASHRAE - American Society of Heating, Refrigeration and Air-conditioning Engineers - predominant BES Society Inexpensive way to get textbook http://www.ashrae.org/

Grading Quizzes 10% Midterms (total 2) 30% Projects 15% Homework Assignments 20% Participation 5% Final Exam 20% 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

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

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

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

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 3 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

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

Course Website http://www.ce.utexas.edu/prof/Novoselac/classes/ARE346N/ 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

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 e-mail 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

Questions ?

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

Thermal Energy

Electric Energy

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 ?

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

Thermal Comfort Definition

Thermal Comfort We need to be in thermal balance

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