High Performing Buildings - Spring 2012 - (Page 32)

Above Architects and solar energy contractors work to integrate the on-site PV array with the building’s design. Afterhours community events held at the credit union have increased energy use beyond initial estimates. A new PV trellis that includes additional and relocated PV panels is expected to produce enough additional energy to exceed the building’s demand. Right The mechanical mezzanine provides space for systems and equipment including HVAC equipment, electrical panels, photovoltaic inverters, rainwater harvesting filters and storage, telecom/data infrastructure, and daylighting controls. Lessons Learned energy modeling and fixture flow estimates cannot predict occupancy-related variables. energy modeling software has evolved to include extremely specific conditions. The result is that designers can essentially test a proposed building solution before construction begins. However, designers must consider that the building might be used in different ways than first thought. for instance, members of the team had previously worked with the client on other banking facilities. As a result, they felt comfortable with how and when the building would be used, and with who would use it. However, once this new branch was complete, it was used as the marketing centerpiece for the client’s rebranded institution. After-hours community events have increased the building’s energy use beyond the team’s initial estimates. still, estimates were within 8% of actual use. This accuracy is most likely accredited to the small scale of the project and effective communication between the design team and the users. Water use was also higher than anticipated because there was no way to estimate exterior nonirrigation water use. for instance, water from a hose bib is used regularly to clean the brick plaza of “ice cream catastrophes.” Another exterior water use is directly related to hosting community fundraising events such as car washes. responding to this need, an additional hose bib has been provided that uses water from the irrigation cistern. With photovoltaics, every little bit counts. given the client’s design goal of a net zero energy building, the design team worked to maximize the roof area available for mounting PV panels. unfortunately, some panels were originally located in partial shade for small portions of the day or during June and July at solar noon. A construction phase addition of another parking lot light (required for ATm safety) casts a shadow on another section of panels. As a result of the partial shade some panels are producing less electricity than other panels. To correct this documented inefficiency, a new, sloped PV trellis is being constructed over the existing flat mezzanine roof. This trellis will provide additional area for a combination of new and relocated existing panels, increasing the total on-site energy production by an additional 15%. The original maintenance program for the panels involved cleaning them semi-annually. Air pollution from heavy truck traffic on an adjacent county road prompted cleaning the panels monthly. daylight harvesting can be challenging with Cfl fixtures. The project’s primary lobby and client interaction spaces are designed with a digital daylight harvesting system that controls dimming ballasts in suspended compact fluorescent (Cfl) fixtures. After the system was installed and inspected by the design engineers and the manufacturer’s representatives, the lights experienced unexpected flickering issues. After hypothesizing about waveforms, high frequency harmonics, electromagnetic fields and excited ions, proposed modifications included everything from adjusting the length and diameter of the wires, grounding all fixtures collectively through a net of ground wires, and installing faraday shields around the bulbs and/or the wiring. luckily, before any significant changes were made, testing the fixtures with lamps by alternate manufacturers solved the problem. BuiLding team Building representative John santarpia, President/Ceo; Arthur Hooper, Coo & eVP Architect/interiors straughn Trout Architects, llC Project Architect gerald Trout, AiA environmental/leed design Tim Hoeft, AAiA, leed AP Construction manager folsom Construction, inc. mechanical engineer, energy modeler Consulting engineering Associates, inc. electrical engineer KBA engineering, inc. Commissioning Authority Herb newman, P leed AP .e., structural engineer robert T. Haug, P .e. Civil engineer michael Phelps, P .e. Photovoltaic design and installation: solar-ray, inc. and dioko solar energy installers, inc. 32 HigH Performing Buildings spring 2012

Table of Contents for the Digital Edition of High Performing Buildings - Spring 2012

High Performing Buildings - Spring 2012
Commentary
Contents
Evie Garrett Dennis Campus
Magnify Credit Union South Lakeland Branch
Natural Resources Defense Council
What Makes Buildings High Performing
University of Florida’s William R. Hough Hall
Products
Advertisers Index

High Performing Buildings - Spring 2012

https://www.nxtbook.com/nxtbooks/ashrae/hpb_2015winter
https://www.nxtbook.com/nxtbooks/ashrae/hpb_2014fall
https://www.nxtbook.com/nxtbooks/ashrae/hpb_2014summer
https://www.nxtbook.com/nxtbooks/ashrae/hpb_2014spring
https://www.nxtbook.com/nxtbooks/ashrae/hpb_2014winter
https://www.nxtbook.com/nxtbooks/ashrae/hpb_2013fall
https://www.nxtbook.com/nxtbooks/ashrae/hpb_2013summer
https://www.nxtbook.com/nxtbooks/ashrae/hpb_2013spring
https://www.nxtbook.com/nxtbooks/ashrae/hpb_2013winter
https://www.nxtbook.com/nxtbooks/ashrae/hpb_2012fall
https://www.nxtbook.com/nxtbooks/ashrae/hpb_2012summer
https://www.nxtbook.com/nxtbooks/ashrae/hpb_2012spring
https://www.nxtbook.com/nxtbooks/ashrae/hpb_2012winter
https://www.nxtbook.com/nxtbooks/ashrae/hpb_2011fall
https://www.nxtbook.com/nxtbooks/ashrae/hpb_2011summer
https://www.nxtbook.com/nxtbooks/ashrae/hpb_2011spring
https://www.nxtbook.com/nxtbooks/ashrae/hpb_2011winter
https://www.nxtbook.com/nxtbooks/ashrae/hpb_2010fall
https://www.nxtbook.com/nxtbooks/ashrae/hpb_2010summer
https://www.nxtbook.com/nxtbooks/ashrae/hpb_2010spring
https://www.nxtbook.com/nxtbooks/ashrae/hpb_2010winter
https://www.nxtbook.com/nxtbooks/ashrae/hpb_2009fallnew
https://www.nxtbook.com/nxtbooks/ashrae/hpb_2009summer
https://www.nxtbook.com/nxtbooks/ashrae/hpb_2009spring
https://www.nxtbook.com/nxtbooks/ashrae/hpb_2009winter
https://www.nxtbook.com/nxtbooks/ashrae/hpb_2008fall
https://www.nxtbook.com/nxtbooks/ashrae/hpb_2008summer
https://www.nxtbook.com/nxtbooks/ashrae/hpb_2008spring
https://www.nxtbook.com/nxtbooks/ashrae/hpb_2008winter
https://www.nxtbookmedia.com