1 / 17

Perspective Program for Commercial New Construction

Perspective Program for Commercial New Construction. CNC Small Office RTF July 2007. Goal: A Prescriptive Program For Selected Simple Commercial New Construction. Whole-building, integrated measure approach where possible and effective Deemed or deemed-calculated savings

keene
Télécharger la présentation

Perspective Program for Commercial New Construction

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Perspective Program for Commercial New Construction CNC Small Office RTF July 2007

  2. Goal: A Prescriptive Program For Selected Simple Commercial New Construction • Whole-building, integrated measure approach where possible and effective • Deemed or deemed-calculated savings • Commonality across the region • Training for designers, builders & developers

  3. Progress • CNC Strategy Group • Six meetings on regional needs & opportunities • RTF Subcommittee • Small Office Focus • Reviewed 21 measures, analyzed 8 in detail • Oregon code base, two climates Boise & Portland • Four HVAC system types considered • PSZGas, PSZHP, PVAVElec, PVAVGas • Details in: DRAFT CNC Prescriptive Concept July2007.doc

  4. Progress • Several iterations on baseline conditions • Size, fenestration, HVAC system, schedules … • Several iterations on measures • What is the measure, how to model it in EQuest • Incremental cost difficult to acquire

  5. Detailed Analysis on 8 Measures • Glass • Code to U40 SHGC40 • Code to U35 SHGC35 • Lighting Power Density • Code (1.0 W/sf) to 0.75 W/sf • HPT8 & T5HO • Occupancy sensor lighting in open office • Fan power improvement • Rooftop economizer Cx • Premium HVAC equipment (CEE Tier 2 EERs)

  6. Summary of Results to Date • Most measures look to be TRC cost-effective except: • CEE Tier 2 equipment • Fan power in the VAV systems • Rooftop CX in the PSZ systems • T5HO lighting option • Most kWh savings provided by HPT8 lighting • Windows: Second biggest electric measure & the biggest gas measure • HVAC measures provide about 1/5 of lighting & window savings

  7. Summary of Results to Date • Climate makes little difference in the kWh savings estimates • Except for windows in the HP systems • Climate makes a very modest difference in gas savings for the U35 window measure • HVAC system type has bigger impact on kWh & therm savings

  8. kWh Savings

  9. Therm Savings

  10. Cost

  11. TRC B/C Ratio by Measure

  12. Climate Impact on Windows (kWh)

  13. Climate Impact on Windows (therms)

  14. CEE Tier 2 Equipment

  15. Measures Combined to Packages • B/C ratios are between 1.0 and 2.0 for most packages • High B/C measures compensate for low • But not enough savings to cover all the low B/C ratio measures • Either CEE T2 OR T5HO lighting option • See tables in: SmallOffice-PC253-alpha.xls

  16. Issues • CEE Tier 2 HVAC Equip • Cost uncertainty & Low B/C ratio • Will costs come down? • Packages • Is baseline really code? What is standard practice? • Window U value and SHGC • LPD • Other measures • Other state baselines

  17. Recommendations • Plenty of cost-effective savings to proceed • Start program design work • Package measures into appropriate bundles • Develop specifications for measures • Analyze other state baselines • Analyze other climates • Design evaluation

More Related