The University of Texas at Austin Spring 2010 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 recommended) Professor: Dr. Atila Novoselac ECJ, 5422 Office (512) 475-8175 ; LAB (512) 232-7937 e-mail: atila@mail.utexas.edu http://www.ce.utexas.edu/prof/Novoselac Office Hours: Tuesday and Thursday 11:00 AM – 12:00 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 Introduce yourself Address any of your concerns

Motivation for ARE 346N class Who are you? Why are you here? What is your primary interest? Structures Construction engineering/Project management Environmental Engineering Building environmental systems (HVAC) Something else

Structural vs. Environmental Systems in buildings 4

3D model – Biomedical Engineering (BME) Building 5

3D model – Biomedical Engineering (BME) Building 6

3D model – Biomedical Engineering (BME) Building 7

Real world questions 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?

Buildings Responsible for ~40% of energy consumption 90% of our time we spend indoors Construction 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: Applied Thermodynamics I already took it I have not taken it I am currently taking it

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/ Student Zone For student application

Grading Quizzes 10% Midterms (total 2) 25% Projects 15% Homework Assignments 20% Participation 5% Final Exam 25% 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: 10 + 1 bonus Projects: Midterm and Final Homework Assignments: During the whole course

Final Exam Optional IF You get a C (70%) or better on both midterms You give me written notification by May 7th at 5pm If you meet the above criteria and don’t take the final, your midterm grade 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 1 wk 2. HVAC Systems – Motivation and Basics 1 wk 3. Heating and Cooling Load Calculations 1 wk 4. Heating and Cooling Equipment 2 wks 5. Air Systems and Delivery Equipment 2 wks 6. Electrical Systems 3 wks 7. Lighting Introduction and Equipment 2 wks 8. Lighting Design 1 wk 9. Plumbing/Acoustics 1 wk 10. Reviews 1 wk 15 wks 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

Continues from previous page Note funny ordering of chapters Air systems – ventilation and IAQ controls Additional review before midterm Project assignment Lighting

Class Website Look at Assignments sections http://www.ce.utexas.edu/prof/Novoselac/classes/ARE346N/ Look at Assignments sections Review class material ahead of time use posted class notes PLEASE LET ME KNOW ABOUT ERRORS Used prometheus

My Issues 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 - afternoon - HVAC Design Class Please don’t use e-mail to ask me questions which require long explanations Call me or come to see me I accept suggestions I will listen your comments The more specific the better

Any Questions ?

Energy Consumption in Commercial Buildings Cooking Cooling Heating Lighting Office Equipment Other Refrigeration Ventilation Water Heating 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, Source: DOE

What Building System is Responsible for the Most Energy Use in Commercial Buildings? Refrigeration/Office Equipment/“plug loads” Lighting HVAC Water Heating Refrigeration

HVAC - 45% Source: DOE 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, Source: DOE

Energy Bill for Residential Buildings http://www.energystar.gov

Space for Environmental Systems Ref: Tao and Janis (2001)

Space for Environmental Systems Roof for rooftop units

More expensive then Ref: Tao and Janis (2001)

First cost vs. Operating cost Size of equipment Design parameters Operating cost Built-in equipment Operational parameters Energy analyses for optimum balance

Types of Energy Used in Buildings Electrical Gas Oil Coal and wood Electrical energy large portion from fossil fuels Conversion: 3 kW of heating energy 1kW electric energy Primary energy vs. end use energy Burning fossil fuel emission of CO2, - global worming SO2, NO2, CO - air quality

Assignment 1 Learning styles Course website Researching and using references Background material Due on Tuesday