ASHRAE Journal - May 2011 - 40

payback. The geo-exchange loop has operated over three year. This is beneficial for schools in the swing seasons of fall years within its parameters. and spring. The project faced a unique sustainable challenge based on the All systems and utilities (including electric, gas and water) city of Ann Arbor’s offset-mitigation decree with the Michigan are monitored continuously and trended. This allows building Department of Environmental Quality (MDEQ). The program operators to view and adjust building performance over time. was established to aid and protect the health and safety of the The building was fully commissioned by a third party and the community and environment by not allowing new developments design engineer and commissioning agent teamed throughout to exacerbate sewage collection system capacity issues and the first year of occupancy to give the building operators adpartial treatment plant overflows into the local Huron River. ditional insight and keep the building performing to the design The city’s program aims at disconnecting existing footing drains intent. from the sanitary system. A detailed value engineering and energy analysis was perNew developments are required to offset 120% of the FDDs formed on this facility at several milestones of the project. The they add to the system or pay the city fair market value. The new mechanical systems designed, including the geo-exchange sysSkyline High School could not meet either of these requirements tem, were installed within the construction budget and perform due to the rules of the Michigan Department of Treasury School within the operational budget. Bond Loan Program. The design engineers Unitary heat pumps that operate in reteamed with the city of Ann Arbor engisponse to space occupancy and internal neers and developed a solution. Instead loads, in lieu of large conventional air of a traditional pool backwash piped to handlers, reduce overall fan energy. Locatthe sanitary sewer, the project developed ing equipment near the spaces they serve an onsite treatment system that sends the reduced ductwork and required clearances; discharge water to the onsite storm water installation costs were held to a minimum. retention ponds in full compliance with In providing energy-eff icient, costthe MDEQ. effective HVAC systems, Peter Basso This method was also implemented Associates’ engineering team was able to at another of the District’s high school achieve the following: pool and provided the school district with • Closed loop geo-exchange system with excess credits to be used for future develvariable speed pumping strategy resulted in opments or sold back to the city of Ann approximately $117,500 energy savings per Arbor at market value. The city of Ann year resulting in a simple payback of 4.6 Arbor also benefited by avoiding a costly years, based on an additional investment upgrade to the sanitary trunk line serving of $545,000. Northwest Ann Arbor. • Energy recovery dedicated outdoor Other innovative solutions at Skyline Installing a horizontal closed loop in the air systems to pretreat ventilation air for High School include a storm water man- school’s geo-exchange field. all unitary heat pumps, as well as serving agement system that provides 100% of large spaces such as gymnasiums, cafeteria, the irrigation water and protects the surrounding ecosystem auditorium and locker rooms, resulted in approximately $50,252 of the Huron River wetlands on all sides of the site. The energy savings per year resulting in a simple payback of 2.4 relocation of an amphibian pond has proved successful with years, based on an additional investment of $120,606. increased colonization. The inhabitants were required to • Energy recovery based dehumidification system serving the vacation at the Detroit Zoo while the pond was moved into natatorium resulted in approximately $34,956 energy savings the undisturbed wooded area. Techniques were used in this per year over a conventional refrigerant based dehumidification project that the Michigan Department of Natural Resources system, resulting in a simple payback of 1.4 years, based on an and MDEQ had not used before. additional investment of $48,000. The building was designed in a four-story configuration to In addition, energy efficient lighting and motors, a wind reduce the building footprint. Although this challenged the turbine, an energy management/direct digital control system, placement of the mechanical/electrical systems, it provided and automated building and site lighting controls were installed. the opportunity to isolate mechanical equipment in fifth floor Skyline High School began as the facility that no one wanted – penthouses, reducing HVAC noise and facilitating maintenance. at least none of its neighbors. The property was a 110 acre (45 ha) Involvement of the maintenance staff throughout the design pristine, wooded lot. Although it had been owned by the school proved to be key in developing a useful, high performance district for more than four decades, with the intent that it one day building. become the site for a new facility, that concept was lost in the Without a boiler or chiller plant, seasonal startups and shut annuls of the Township’s deed office. Because the school’s site is downs are avoided. Dedicated water source heat pumps for an integral part of the densely forested surrounding community, each space provide instant heating or cooling throughout the it was important to treat the site development as an extension of
40 ASHRAE Journal ashrae.org May 2011



ASHRAE Journal - May 2011

Table of Contents for the Digital Edition of ASHRAE Journal - May 2011

ASHRAE Journal - May 2011
Contents
Commentary
Industry News
Letters
Meetings and Shows
Feature Articles
Seismic Restraint
Plug Load Design Factors
Technology Award Case Studies:
State-of-Art School
Green School Lab
Eco-Friendly, Affordable, School
Building Sciences
Special Section
InfoCenter
Solar NZEB Project
Emerging Technologies
IAQ Applications
Washington Report
International Column
Products
People
Classified Advertising
Advertisers Index
ASHRAE Journal - May 2011 - Intro
ASHRAE Journal - May 2011 - ASHRAE Journal - May 2011
ASHRAE Journal - May 2011 - Cover2
ASHRAE Journal - May 2011 - 1
ASHRAE Journal - May 2011 - 2
ASHRAE Journal - May 2011 - Contents
ASHRAE Journal - May 2011 - Commentary
ASHRAE Journal - May 2011 - 5
ASHRAE Journal - May 2011 - Industry News
ASHRAE Journal - May 2011 - 7
ASHRAE Journal - May 2011 - 8
ASHRAE Journal - May 2011 - 9
ASHRAE Journal - May 2011 - 10
ASHRAE Journal - May 2011 - 11
ASHRAE Journal - May 2011 - 12
ASHRAE Journal - May 2011 - 13
ASHRAE Journal - May 2011 - Letters
ASHRAE Journal - May 2011 - 15
ASHRAE Journal - May 2011 - 16
ASHRAE Journal - May 2011 - 16a
ASHRAE Journal - May 2011 - 16b
ASHRAE Journal - May 2011 - 17
ASHRAE Journal - May 2011 - Meetings and Shows
ASHRAE Journal - May 2011 - 19
ASHRAE Journal - May 2011 - Seismic Restraint
ASHRAE Journal - May 2011 - 21
ASHRAE Journal - May 2011 - 22
ASHRAE Journal - May 2011 - 23
ASHRAE Journal - May 2011 - 24
ASHRAE Journal - May 2011 - 25
ASHRAE Journal - May 2011 - 26
ASHRAE Journal - May 2011 - 27
ASHRAE Journal - May 2011 - 28
ASHRAE Journal - May 2011 - 29
ASHRAE Journal - May 2011 - Plug Load Design Factors
ASHRAE Journal - May 2011 - 31
ASHRAE Journal - May 2011 - 32
ASHRAE Journal - May 2011 - 33
ASHRAE Journal - May 2011 - 34
ASHRAE Journal - May 2011 - 35
ASHRAE Journal - May 2011 - State-of-Art School
ASHRAE Journal - May 2011 - 37
ASHRAE Journal - May 2011 - 38
ASHRAE Journal - May 2011 - 39
ASHRAE Journal - May 2011 - 40
ASHRAE Journal - May 2011 - 41
ASHRAE Journal - May 2011 - 42
ASHRAE Journal - May 2011 - 43
ASHRAE Journal - May 2011 - Green School Lab
ASHRAE Journal - May 2011 - 45
ASHRAE Journal - May 2011 - 46
ASHRAE Journal - May 2011 - 47
ASHRAE Journal - May 2011 - 48
ASHRAE Journal - May 2011 - 49
ASHRAE Journal - May 2011 - 50
ASHRAE Journal - May 2011 - 51
ASHRAE Journal - May 2011 - Eco-Friendly, Affordable, School
ASHRAE Journal - May 2011 - 53
ASHRAE Journal - May 2011 - 54
ASHRAE Journal - May 2011 - 55
ASHRAE Journal - May 2011 - 56
ASHRAE Journal - May 2011 - 57
ASHRAE Journal - May 2011 - Building Sciences
ASHRAE Journal - May 2011 - 59
ASHRAE Journal - May 2011 - 60
ASHRAE Journal - May 2011 - 61
ASHRAE Journal - May 2011 - 62
ASHRAE Journal - May 2011 - 63
ASHRAE Journal - May 2011 - 64
ASHRAE Journal - May 2011 - 65
ASHRAE Journal - May 2011 - 66
ASHRAE Journal - May 2011 - 67
ASHRAE Journal - May 2011 - InfoCenter
ASHRAE Journal - May 2011 - 69
ASHRAE Journal - May 2011 - 70
ASHRAE Journal - May 2011 - 71
ASHRAE Journal - May 2011 - 72
ASHRAE Journal - May 2011 - 73
ASHRAE Journal - May 2011 - 74
ASHRAE Journal - May 2011 - 75
ASHRAE Journal - May 2011 - 76
ASHRAE Journal - May 2011 - 77
ASHRAE Journal - May 2011 - Solar NZEB Project
ASHRAE Journal - May 2011 - 79
ASHRAE Journal - May 2011 - 80
ASHRAE Journal - May 2011 - 81
ASHRAE Journal - May 2011 - 82
ASHRAE Journal - May 2011 - 83
ASHRAE Journal - May 2011 - 84
ASHRAE Journal - May 2011 - 85
ASHRAE Journal - May 2011 - 86
ASHRAE Journal - May 2011 - 87
ASHRAE Journal - May 2011 - 88
ASHRAE Journal - May 2011 - 89
ASHRAE Journal - May 2011 - Emerging Technologies
ASHRAE Journal - May 2011 - 91
ASHRAE Journal - May 2011 - 92
ASHRAE Journal - May 2011 - 93
ASHRAE Journal - May 2011 - 94
ASHRAE Journal - May 2011 - 95
ASHRAE Journal - May 2011 - IAQ Applications
ASHRAE Journal - May 2011 - 97
ASHRAE Journal - May 2011 - 98
ASHRAE Journal - May 2011 - 99
ASHRAE Journal - May 2011 - 100
ASHRAE Journal - May 2011 - 101
ASHRAE Journal - May 2011 - Washington Report
ASHRAE Journal - May 2011 - 103
ASHRAE Journal - May 2011 - International Column
ASHRAE Journal - May 2011 - 105
ASHRAE Journal - May 2011 - 106
ASHRAE Journal - May 2011 - Products
ASHRAE Journal - May 2011 - 108
ASHRAE Journal - May 2011 - People
ASHRAE Journal - May 2011 - Classified Advertising
ASHRAE Journal - May 2011 - 111
ASHRAE Journal - May 2011 - Advertisers Index
ASHRAE Journal - May 2011 - Cover3
ASHRAE Journal - May 2011 - Cover4
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