1. Course project presentation Thursday in class Starts earlier: 12:20 p.m. Send me the presentation files till 11:00 a.m. 5 Minutes strictly!

2. Announcement Field trip When: Today 3:20 PM Where: Beck trailer (trailer is located on University Ave., just west of PHR, north of GEA). Who: Brian Wittmayer: UT Project Manager (Office of Facilities Planning and Construction Services, UT Systems) Matt Pickens; Project Manager, Beck (Construction Manager) Bernard Bhatti; Associate Director, Engineering Services, (Project Management and Construction Services, UT-Austin) Missy Woolsey; Engineer, HMG Associates (MEP Engineers for project)

3. Objectives Compare Residential and Commercial Systems - Trends in residential HVAC Review

4. Computer software for load calculation http://www.xpedio.carrier.com/idc/groups/publ ic/documents/marketing/hap_ehelp_009.pdfhttp://www.xpedio.carrier.com/idc/groups/publ ic/documents/marketing/hap_ehelp_009.pdf http://www.doe2.com/equest/ http://tc47.ashraetcs.org/pdf/Presentations/Lies en_Chicago.pdfhttp://tc47.ashraetcs.org/pdf/Presentations/Lies en_Chicago.pdf

5. Residential vs. Commercial systems Course focus was on HVAC equipment that is used in both: residential and commercial systems Emphasize on the application in commercial systems

6. Commercial HVAC Systems Single zone Multi zone VAVCAV VAVCAV All Hydroinic that relay on infiltration With and without reheaters DOAS with fan coils or radiant ceilings With reheaters Dual duct Dual duct DOAS with fan coils With and without humidity control This is not the complete list !

7. Typical Components in Commercial systems Constant operation Outdoor air supply Two fans (supply and return) Multizone system Control …..

8. Residential Systems Buildings are responsible for 40% of US energy use ~1/3 houses There will be a push for conservation in this sector Zero Energy homes http://www.eere.energy.gov/buildings/building_america/pdfs/29915_zeb_p ath.pdfhttp://www.eere.energy.gov/buildings/building_america/pdfs/29915_zeb_p ath.pdf http://www.toolbase.org/ToolbaseResources/level3.aspx?BucketID=2&Cat egoryID=58http://www.toolbase.org/ToolbaseResources/level3.aspx?BucketID=2&Cat egoryID=58

9. Residential System

10. Residential system Technology is feasible and cost-effective Several barriers to widespread use: Up-front costs are still higher Insufficient data on resale costs Lack of experienced designers