The University of Texas at Austin Spring 2015CAEE Department, Architectural Engineering Program

Course: Building Energy Management Systems

Instructor: Dr. Atila NovoselacECJ, 5.430Office (512) 475-8175 e-mail: atila@mail.utexas.eduhttp://www.ce.utexas.edu/prof/Novoselac

Office Hours: Tuesday and Thursday 11:00 a.m. – 12:00 p.m.

Lecture Objectives:

• Discuss syllabus

• Describe course scope

• Introduce course themes

• Address your concerns

• Start with review

Introduce yourself

• Name

• Background • Academic program• Interest and motivation for this course

Building Energy Management Systems

Comparison to HVAC Design course

- Focus on systems- For large buildings and building complexes- More analyses based than just design - More independent project- Geared towards grad students

Course Objectives:

• Learn about advanced building energy and environmental control systems.

• Obtain knowledge about district cooling and heating systems.

• Gain the skills and tools necessary to evaluate integration of sustainable energy production systems to a given building site.

• Study application of combined heat and power systems in a specific building or group of buildings.

• Conduct thermal, hydraulic and economic modeling of integrated building energy systems for planning and design

Prerequisites

• Graduate students in CAEE, or other engineering fields. Student should have at least one Fluid Dynamics course and at least one Thermodynamics course. HVAC Design course is desired but not necessary. Undergraduate students interested in this course will need permission from the instructor

Reading Assignment

• Kuehn, T.H.; Ramsey, J.W.; Threlkeld, J.L. 1998. Thermal Environmental Engineering (3rd Edition) Prentice Hall ISBN: 0139172203.

• Taylor, S., P. Dupont, B. Jones, T. Hartman and M. Hydeman. 2000. Chilled water plant design guide. San Francisco: Pacific Gas & Electric Company.

http://www.taylor-engineering.com/downloads/cooltools/EDR_DesignGuidelines_CoolToolsChilledWater.pdf

• ASHRAE. 2007. ASHRAE Handbook--2007 HVAC Systems and Equipment. Atlanta: American Society of Heating, Refrigerating, and Air-Conditioning Engineers.

• ASHRAE Handbook--2009 Fundamentals. Atlanta: American Society of Heating, Refrigerating, and Air-Conditioning Engineers.

• Handouts

• Journal papers

Topics• 1. Class intro and HVAC systems review 1.5 wks

• 2. Building ventilation heat recovery systems 1 wks

• 3. Thermal (solar and waste heat) powered desiccant systems 1.5 wk

• 4. Centralized (compressor and sorption based) cooling systems 3 wks

• 5. Centralized heating systems 1.5 wk

• 6. District heating and cooling distribution systems 1 wk

• 7. Geothermal and low temperature buildings systems 1 wk

• 8. Combined cooling heat and power systems 1.5 wks

• 9. Systems integration and control 1 wk

Test 30%

Homework Assignments 35%

Final Project & Presentation 30%

Classroom Participation 5%

100%

Grading

Grading

> 93 A

90-93 A-

86-90 B+

83-86 B

80-83 B-

< 80 C-, C, C+

Course Website

All course information:http://www.ce.utexas.edu/prof/Novoselac/classes/CE397b/

• Your grades and progress on Blackboard

• Look at assignments and handout sections• Class notes posted in the morning before the class

Questions ?

Review – Example problems

• Thermodynamics (cycles) • Heat pump example

• Psychrometrics: • Swimming pool dehumidification

Focus on various operation conditions (not just design condition)

Heat pump example

Heat Pump

Consumes heat energy Rejects heat energy

A recreation center

Ice Rink Swimming pool

Electric power for a compressor

EvaporatorCondenser

85-89oF 30oF

Ice Rinks Energy flow

Swimming poolsEnergy flow

Challenges for this problem

• Circulating fluid

• Adjustment of evaporation and condensation temperatures

• Adjustment of capacity for design condition

• Control of capacity for non design conditions• Need to study load profiles • Design sophisticated control • Provide backup system

Example of capacity profile(building cooling demand)