Ce diaporama a bien été signalé.
Nous utilisons votre profil LinkedIn et vos données d’activité pour vous proposer des publicités personnalisées et pertinentes. Vous pouvez changer vos préférences de publicités à tout moment.

Energy Trust New Buildings: Technical Updates for Modelers and Engineers

296 vues

Publié le

Energy Trust New Buildings: Technical Updates for Modelers and Engineers

Publié dans : Formation
  • Soyez le premier à commenter

  • Soyez le premier à aimer ceci

Energy Trust New Buildings: Technical Updates for Modelers and Engineers

  1. 1. New Buildings Technical Training July 14, 2016
  2. 2. Agenda • Introductions • Updates to Technical Guidelines • Code Changes • Code Development • Open Studio and EDAPT • Program Feedback
  3. 3. Introductions • Cindy Strecker – Senior Engineering Manager • Michael Crayne – Engineer • Forest Tanier-Gesner – Engineer • Cory Fulton – Engineer • Emily Rosenbloom – Technical Manager
  4. 4. About • Independent nonprofit • Serving 1.5 million customers of Portland General Electric, Pacific Power, NW Natural and Cascade Natural Gas • Providing access to affordable energy • Generating homegrown, renewable power • Building a stronger Oregon and SW Washington
  5. 5. A clean energy power plant 548 119 average megawatts saved aMW generated annual therms saved45M tons of carbon dioxide avoided17.4M Enough energy to power 513,000 homes and heat 89,000 homes for a year
  6. 6. Technical Guidelines Introduction • Documents technical requirements • Relevant to Modeled Savings and Special Measures • Technical guidelines and Oregon code • Contact Program for alternative approach
  7. 7. Locating Guide energytrust.org 1. Commercial 2. New Construction and Major Renovations 3. Find Forms 4. Technical Guidelines 1 2 3 4
  8. 8. Technical Guidelines – Summary of Updates SEED Appendix L Pre-approved Bundled Measures Pool Dehumidification Baseline HVAC
  9. 9. Technical Guidelines – Baseline HVAC Expanded the baseline mapping to include ASHRAE Appendix G Heating Fuel / Building Type (Table 4.8) Fossil Fuel and Purchased Heat Electric and Other Hybrid Systems Residential Sys 1 – PTAC Sys 2 – PTHP Sys 1 – PTAC Non-residential, 3 floors or fewer and <25,000 sq. ft. Sys 3 – PSZ-AC Sys 4 – PSZ-HP Sys 3 – PTZ-AC Non-residential , 4 – 5 floors and <25,000 sq. ft. or 5 floors or fewer and 25,000 – 150,000 sq. ft. Sys 8 – Packaged VAV with reheat Sys 9 – Packaged VAV with PFP boxes Sys 10 – Packaged Hybrid VAV Non-residential and more than 5 floors or >150,000 sq. ft. Sys 5 VAV with reheat Sys 6 – VAV with reheat Sys 7 – Hybrid VAV with reheat Retail and 1 – 2 floors Sys 3 – PSZ-AC Sys 4 – PSZ-HP Sys 3 – PTZ-AC Heated-only storage Sys 11 – Heating and ventilation Sys 12 – Heating and ventilation Sys 11 – Heating and ventilation
  10. 10. Technical Guidelines – Pre-approved bundles No Longer Available • Envelope measures • Timeclock lighting controls • >90% condensing tank DHW in all applications • Showerheads <2 GPM • Air conditioning, air- source heat pump, and water-source heat pump units • VFDs on pumps and cooling tower fans • Duct static pressure reduction • Terminal fan-powered VAV boxes • Increasing heating/cooling coil temperature differentials • High-efficiency transformers
  11. 11. Technical Guidelines – Pre-approved bundles Newly Approved • LPD reductions up to 60% better than code • Condensing tank DHW >94% AND in lodging, restaurant, laundry, or residential • Showerheads <1.75 GPM • Condensing unit heaters >92% • Condensing boilers >94%
  12. 12. Technical Guidelines – 2014 OEESC code change No longer one standard baseline Model the baseline system to be the same overall type as the proposed system Pool Dehumidification
  13. 13. Technical Guidelines – General Reminders 2.2.3 Avoid fuel switching fuels must match between baseline and proposed 2.3.2 Generally recognized as cost effective measures these measures can be bundled together for cost effectiveness screening 2.3.3 Measure definition (formerly referred to as “bundling”) components may be defined as one measure if they have positive savings interactions, negative cost interactions, or significant functionality interactions 2.4.2 Modeling for interactive effects projects must submit individual measure runs, as well as an interactive model with all measures
  14. 14. Code Changes
  15. 15. Code Changes Envelope • Air leakage/air barrier requirements Lighting/Electrical • Modified lighting power allowance tables • Include bathrooms in sleeping unit lighting controls Service Hot Water • Gravity or thermosiphon circulation loops for hot water prohibited • Revised requirements for heat recovery on heated pools • Pool heater efficiency requirement increased
  16. 16. Code Changes cont. Mechanical • Minimum efficiency requirements • Added efficiency tables − Computer room air conditioning − Variable Refrigerant Flow systems • Expanded pipe insulation table
  17. 17. Code Development Envelope HVAC Lighting Prescriptive packages for simple buildings
  18. 18. Open Studio and EDAPT
  19. 19. EDAPT • Designed around OpenStudio • Automated report generation • Custom QAQC of OpenStudio models • Contractor portal
  20. 20. Open Studio – Features • Open source interface for Energy Plus • Actively updated by NREL • Asset Score enables shoe box modeling • Integrates with SketchUp • Parametric Analysis Tool (PAT) • Building Component Library (BCL)
  21. 21. Open Studio – Building Component Library
  22. 22. Program Discussion
  23. 23. Thank You Emily Rosenbloom, Technical Manager emily.rosenbloom@clearesult.com 503.595.4429

×