90.1-2010 Energy Cost Budget Highlights Jason Glazer, PE GARD Analytics Arlington Heights, Illinois 847-698-5686 [email protected] 90.1-2010 Energy Cost Budget Highlights 6/29/2010 Overview • Section 11 – Energy Cost Budget Method • Appendix G – Performance Rating Method • Addenda that will be included – R, W, AI, BJ, BO, BV • Addenda that may be included (in process) – CH, CR, CW, DA, DB, DH, DN • Why these changes? Why These Changes? • • • • Consistency with other Addenda Continuous Maintenance Proposals Proposals from Subcommittee Members Brainstorming Session from Boston Greenbuild Add. R – Normative Appendix G • 3 Public Reviews – Will be in 90.1-2010 • Replaced “should” and “may” with “shall” • More specific – G1.4 – Documentation Requirements – G2.5 - Exceptional Calculation Method • Table G3.1 Part 4 – Schedules – Exception for automatic control only • Table G3.1 Part 14 – Exterior Conditions – Shading, ground temperatures, water main temperatures Add. W – Two Changes • Will be in 90.1-2010 • Table G3.1.1A Baseline HVAC System Types – Adds to footnote to make clear that Exception (a) to Section G3.1.1 applies (additional systems for non-predominant building areas) • G220.127.116.11 Exhaust Air Energy Recovery – Adds exception for systems serving dwelling units in multifamily buildings. Add AI – Purchased Heat/Cool • Will be in 90.1-2010 • Adds new section on how to deal with buildings with purchased hot or chilled water • Now compared to baseline with same kind of equipment and uses actual rates for purchased chilled water or hot water/steam • System mapping and pump power is revised to be consistent Add. BJ – Ventilation Effectiveness • Will be in 90.1-2010 • Adds exception to G18.104.22.168 Ventilation • Credit for the increased ventilation effectiveness • Need to use Standard 62.1 Section 6.2 Ventilation Rate Procedure Add. BO – Consistent E, S, & U • Will be in 90.1-2010 • Revise G22.214.171.124 Exhaust Air Energy Recovery to just reference new heat recovery provisions in Section 126.96.36.199 • Changes 11.3.2 HVAC Systems and G188.8.131.52 Equipment Efficiencies to use IEER instead of EER • Reference cooling tower performance in Table 6.8.1G Add. BV – Consistent Y, AJ, BK, AX • Will be in 90.1-2010 • Reference Sections 5-10 instead of just 10 in reference to receptacle loads in Table G3.1 • Revise G184.108.40.206 System Fan Power to be consistent to changes to the motor section • Better modeling of kitchen exhaust in 11.3.2 and G3.1.1 Add CH – Consistent H & AH • May be in 90.1-2010 • Table 11.3.2a Footnote (b) and G220.127.116.11 replace 0.4 cfm/ft2 with 30% zone peak air flow • New rules about laboratory exhaust Add CR – Unmet Load Hours • May be in 90.1-2010 • Clarify definition of Unmet Load Hour and add definition for Temperature Control Throttling Range • In Section 11, 300 hours replaces 50 hours but proposed must be less than budget • In Appendix G, 300 hours replaces 50 hours Add CW – Service Water Heating • May be in 90.1-2010 • Update Table 11.3.1 Part 11 Service Water Heating • Now can trade off efficiency Add DA – Baseline Ventilation • May be in 90.1-2010 • G18.104.22.168 Ventilation new exception • Baseline ventilation is what is required by code • Extra ventilation has energy impact Add DB – Air Flow and Fan • May be in 90.1-2010 • Add exception for labs in G22.214.171.124 Design Air Flow Rates to use 17F delta • Add subsection to G126.96.36.199 System Fan Power to distribute fan power for supply, return, exhaust, and relief fans in the same proportion as the proposed design Add DH - Renewables • May be in 90.1-2010 • Add definitions for “on-site renewable energy” and “purchased energy” • Clarify 11.2.3 and G2.4 into subsections about renewables and annual energy costs Add DN – Heated Only Spaces • May be in 90.1-2010 • Adds systems 10 and 11 that are heating and ventilation systems with gas furnace or electric resistance heat • Storage rooms, stairwells, vestibules, electrical/mechanical rooms, and restrooms QUESTIONS ?