[Greenbuilding] [NESEABuildingEnergy] Re: BuildingGreen Bulletin - GreenSpec Updates and New Case Studies

Fri Jan 19 18:49:06 CST 2007

perhaps i should have said "conventional" air conditioning.  i did read the article. i presume everyone will. we do have similar systems here in nh but simply use a nearby river for the cooling water source and they do indeed save energy over "conventional" ac, but something is clearly wrong given the numbers in the article. are there at least heat and moisture recovering ventilators for supply exhaust air to reduce ac and dehumidification loadin the design? i didn't see them mentioned.

looks like the pipe is undersized and the pump oversized

also 3000 feet couldn't have been cheap. not to mention the environmental impact statement on disturbing the deep.

perhaps more spent on reducing load (insulation, reflection lower glass shgf, etc. )would have been worth while.

reduce the load, reduce the system-- reduce the load some more, eliminate the system!

  ----- Original Message ----- 
  From: Vaibhav Potnis 
  To: NESEABuildingEnergy at yahoogroups.com ; notices at buildinggreen.com ; greenbuilding at listserv.repp.org 
  Cc: MarcJ.Rosenbaum at valley.net 
  Sent: Friday, January 19, 2007 4:34 PM
  Subject: RE: [NESEABuildingEnergy] Re: BuildingGreen Bulletin - GreenSpec Updates and New Case Studies

  The hawaii center is not without air-conditoning. The project uses a deep sea water cooling system for air-cooling. Water from a deep sea trench is pumped up to the surface and moved through a coil. Hot outside air passes over this coil to produce cool air that is then introduced to the space.

  The 13 kWh/ sf stems from the requirement to move enormous quantities of water over large distance.

  Vaibhav Potnis 

  Portland, OR

------------------------------------------------------------------------------

  From: "Drew A. Gillett P.E." <deaneg at hotmail.com>
  Reply-To: NESEABuildingEnergy at yahoogroups.com
  To: <notices at buildinggreen.com>,<NESEABuildingEnergy at yahoogroups.com>,<greenbuilding at listserv.repp.org>
  CC: "Marc Rosenbaum" <MarcJ.Rosenbaum at valley.net>
  Subject: [NESEABuildingEnergy] Re: BuildingGreen Bulletin - GreenSpec Updates and New Case Studies
  Date: Fri, 19 Jan 2007 11:42:23 -0500

  just took a moment to look at the info on the hawaii energy gateway. (see 
  link below)

  wow, a 3500 sq.ft building costing $3,500,000 or $1000/sq.ft ! all to house 
  3 workers and only 30 2-hour visitors per day.

  despite the heroic efforts of a 20kw pv array only producing 1.2 
  kwh/watt/year despite being in the sunniest location in the country, and 
  eliminating air conditioning and lighting entirely , the building still 
  consumes 13 kwh (43000btu) /sq.ft/year and has to buy as much power from 
  the utility as is produced by the pv.

  90% of the building energy goes into pumps and fans!

  am i missing something. ?

  the spnhof (society for protection of nh forests) building in concord nh 
  in a much more extreme climate (7000 dd and 95 degree summers) was down to 
  21000 btu/sq.ft year in 1985 (on passive solar and wood chips and pv ) and 
  the recent 2000 french wing addition performs at least as well on 
  daylighting, insulation and venting) albeit with a much different design.

  as striking as the hawaii center is as a rack for a pv array, isn't the tail 
  wagging the dog?

  ----- Original Message ----- 
  From: <buildinggreen_bulletin at lists.buildinggreen.com>
  To: <buildinggreen_bulletin at lists.buildinggreen.com>
  Sent: Thursday, January 18, 2007 4:13 PM
  Subject: BuildingGreen Bulletin - GreenSpec Updates and New Case Studies

  > =========================================================
  > Announcing new listings in the BuildingGreen GreenSpec (r) Product 
  > Directory.
  > http://www.buildinggreen.com/auth/productsRecent.cfm?days=45
  > =========================================================
  >
  > ***** Featured New GreenSpec Listing *****
  >
  > InterfaceFLOR TacTiles Allow Easy Carpet Tile Installation and 
  > Reclamation
  >
  > TacTiles are three-inch, self-adhesive PET squares for "floating floor" 
  > commercial carpet tile installations designed for use in products that 
  > have InterfaceFLOR's GlasBac(r) backing. They allow fast, easy 
  > installation on top of almost any hard surface by adhering the carpet 
  > tiles together underneath each intersecting corner, with near-zero VOC 
  > content.
  > http://www.buildinggreen.com/auth/productDetail.cfm?ProductID=3345
  > (Free sample of BuildingGreen Suite)
  >
  > ***** New GreenSpec Listings *****
  >
  > Equipment for Polished Concrete Floors from VIC International
  > http://www.buildinggreen.com/auth/productDetail.cfm?ProductID=3335
  > (Requires paid subscription to BuildingGreen Suite)
  >
  > Vitodens Gas Wall-Mounted Boiler Offers High Efficiencies
  > http://www.buildinggreen.com/auth/productDetail.cfm?ProductID=3213
  > (Requires paid subscription to BuildingGreen Suite)
  >
  > Fritz Industries Manufactures Non-Toxic, Zero-VOC Cementitious 
  > Underlayment Products With 45-70% Flyash
  > http://www.buildinggreen.com/auth/productDetail.cfm?ProductID=3241
  > (Free sample of BuildingGreen Suite)
  >
  > Mitsubishi Electric Canada Makes Lossnay Energy-Recovery Ventilation 
  > (ERV) Units
  > http://www.buildinggreen.com/auth/productDetail.cfm?ProductID=3217
  > (Requires paid subscription to BuildingGreen Suite)
  >
  > ----------------------------------------------------------
  > In the forthcoming February 2007 issue of Environmental Building News 
  > (EBN):
  >
  > -- Cradle-to-Cradle product certification from McDonough Braungart Design 
  > Chemistry (MBDC) comes under scrutiny from EBN senior editor Tristan 
  > Roberts and research director Jennifer Atlee, who examine what the 
  > protocol does - and doesn't - achieve.
  >
  > --- EBN Editor Nadav Malin reviews a new alternative to lightshelves for 
  > bringing daylight deeper into interiors.
  >
  > ----------------------------------------------------------
  >
  > New in BuildingGreen's case studies database:
  >
  > http://www.buildinggreen.com/hpb/index.cfm
  >
  > Hawaii Gateway Energy Center: A Visitor Center and Office Space Designed 
  > as a Net-Zero-Energy Building
  > http://www.buildinggreen.com/hpb/overview.cfm?ProjectID=427
  > (Free sample of BuildingGreen Suite)
  >
  > Annie Creek Restaurant and Gift Shop: A Restaurant and Retail Center in 
  > Crater Lake, Oregon Designed for Low Water and Energy Use
  > http://www.buildinggreen.com/hpb/overview.cfm?ProjectID=728
  > (Requires paid subscription to BuildingGreen Suite)
  >
  > #######################################
  >
  > The Boston Architectural College (BAC), in association with 
  > BuildingGreen, Inc., is currently offering 8-week online sustainable 
  > design courses. Registration is still open.
  >
  > Courses starting January 22nd:
  > - Sustainable Design as a Way of Thinking
  > - Building Envelope
  > - Green Practice: Energy and Air Quality
  > Courses starting March 26th:
  > - Materials, Resources and Indoor Environmental Quality
  > - Environmental Systems
  > - Sustainable Design in Practice
  > - Site Design, Landscaping and Site-Water Issues
  > - Smart Growth Planning
  >
  > For more information, visit http://www.the-bac.edu/green, call (617) 
  > 585-0101, or email Anna Stefanidou at anna.stefanidou at the-bac.edu.
  >
  > #######################################
  >
  > _______________________________________________
  > BuildingGreen Bulletin
  > BuildingGreen_Bulletin-owner at lists.buildinggreen.com
  >
  > To stop receiving these semi-monthly mailings, send an empty email to 
  > BuildingGreen_Bulletin-request at lists.buildinggreen.com with "unsubscribe" 
  > (without the quotes) in the subject line, or visit 
  > http://www.buildinggreen.com/help/bulletin.cfm
  > 

------------------------------------------------------------------------------
  Get up-to-date with movies, music and TV. Its happening on MSN Entertainment __._,_.___  

  SPONSORED LINKS Environment issue  Energy fields  Clean energy  
        Green building  Education  

  Your email settings: Individual Email|Traditional 
  Change settings via the Web (Yahoo! ID required) 
  Change settings via email: Switch delivery to Daily Digest | Switch to Fully Featured 
  Visit Your Group | Yahoo! Groups Terms of Use | Unsubscribe 

  __,_._,___ 