slide1
Download
Skip this Video
Download Presentation
deep energy retrofit– case studies

Loading in 2 Seconds...

play fullscreen
1 / 26

deep energy retrofit– case studies - PowerPoint PPT Presentation


  • 133 Views
  • Uploaded on

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.

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha
Download Presentation

PowerPoint Slideshow about ' deep energy retrofit– case studies' - neveah


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.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript
slide1

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

case studies cost benefit
Case studies / Cost benefit:
  • 64,583 sf office
  • cost 20% less than construction average
  • 80% energy savings

Energon Offices, Ulm, 2003

Architect; Stephan Oehler

case studies cost benefit1
Case studies / Cost benefit:
  • Not planned as PH, therefore not designed or oriented for solar gain
  • Still only 5% more than construction average
slide4

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.

slide9

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

slide13

case study: an Owners perspective

integrated design approach

slide14

case study: We are like mechanics…

1963 Ford Falcon : 32.5 MPG @ $.40 /gallon =

slide15

case study: The efficiency of these buildings needs to sustain the welfare of its residents…

2014 Honda Fit EV: 118e MPG @ $3.38/gallon=

slide16

case study (retrofit):

Delta Commons @ Benning Road

slide17

case study (retrofit):

Delta Commons @ Benning Road

slide18

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
slide19

case study (retrofit):

#1 design order of operations: orientation

slide20

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

slide21

case study (retrofit):

response to solar gain: shading assemblies

JANUARY 29, 10a

APRIL 21, 10a

OCTOBER 21, 10a

JULY 21, 10a

slide22

case study (retrofit):

#2 design order of operations: envelope

slide23

case study (retrofit):

#2 design order of operations: envelope

slide24

case study (retrofit):

#2 design order of operations:

utilize energy recovery (ERV)

slide25

case study (retrofit):

#2 design order of operations:

utilize energy recovery (ERV)

ad