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deep energy retrofit– case studies

deep energy retrofit– case studies. The Castle Square Apartments. Deep Energy Retrofit of 192 units, while occupied by residents 7 story, 500 affordable apartment units, built in the 1960’s, Boston MA . 73% reduction in whole building consumption.

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deep energy retrofit– case studies

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  1. deep energy retrofit– case studies The Castle Square Apartments • Deep Energy Retrofit of 192 units, while occupied by residents • 7 story, 500 affordable apartment units, built in the 1960’s, Boston MA. • 73% reduction in whole building consumption. Heating: 94.5% efficient condensing boilers and indirect hot water storage tanks with hydronic baseboards in each unit. Cooling: Energy Star AC units, 7800 Btu/hour cooling capacity, 9.9 EER DHW: Solar Hot Water Ventilation: Renovation of existing system utilizing Aeroseal technology and Constant Air Regulator (CAR) Dampers. Installation of fresh air trickle vents. http://www.castledeepenergy.com

  2. Case studies / Cost benefit: • 64,583 sf office • cost 20% less than construction average • 80% energy savings Energon Offices, Ulm, 2003 Architect; Stephan Oehler

  3. Case studies / Cost benefit: • Not planned as PH, therefore not designed or oriented for solar gain • Still only 5% more than construction average

  4. Case studies / Cost benefit: • No additional cost • mechanical systems cost approximately €150,000 less • Savings were invested in Passivhaus Standard windows and additional insulation Montessori school: Architects: Walbrunn / Grotz / Vallentin.

  5. building to minimum standards v. optimal standards

  6. what would be optimal standards?

  7. what would be optimal standards?

  8. and what are the actual costs?what you really want to know graphic of cost differences

  9. challenges we have not cracked the utility allowance nut yet trades crews are still coming along we still have to prove we are meeting lower energy standards individual metering direct hood exhaust inferior models don’t recognize solar gain, heat recovery, etc

  10. case study: Delta Commons at Benning Road

  11. case study: an Owners perspective

  12. case study: an Owners perspective

  13. case study: an Owners perspective integrated design approach

  14. case study: We are like mechanics… 1963 Ford Falcon : 32.5 MPG @ $.40 /gallon =

  15. case study: The efficiency of these buildings needs to sustain the welfare of its residents… 2014 Honda Fit EV: 118e MPG @ $3.38/gallon=

  16. case study (retrofit): Delta Commons @ Benning Road

  17. case study (retrofit): Delta Commons @ Benning Road

  18. case study: Delta Commons @ Benning Road Passive House principles revisited • orientation • super-insulate/airseal (envelope), and utilize ERV • optimize window performance • utilize passive space conditioning • utilize high efficiency active strategies

  19. case study (retrofit): #1 design order of operations: orientation

  20. case study (retrofit): #1 design order of operations: orientation we can not turn the buildings, => regulate solar gain (as best practically) with shading assemblies ly

  21. case study (retrofit): response to solar gain: shading assemblies JANUARY 29, 10a APRIL 21, 10a OCTOBER 21, 10a JULY 21, 10a

  22. case study (retrofit): #2 design order of operations: envelope

  23. case study (retrofit): #2 design order of operations: envelope

  24. case study (retrofit): #2 design order of operations: utilize energy recovery (ERV)

  25. case study (retrofit): #2 design order of operations: utilize energy recovery (ERV)

  26. a better way

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