High Performing Buildings - Summer 2011 - (Page 26)

HistOriC and PubliC/ P r i vat e Pa r t n e r s H i P ta x C r e d i t the project was conceived and developed by Christman’s real estate group as a public/private partnership, incorporating: $672,500 in state of michigan Brownfield single-business tax credits; $2 million in federal historic tax credits; $500,000 in state historic tax credits; $1.2 million ($100,000/year for 12 years) in property tax relief through establishment of a federal obsolete Property rehabilitation Act (oPrA) district; and $8.5 million in below-market-rate loans through federal new markets Tax Credits. gene meadows lessOns learned Allow added time in construction schedules for proper controls installation, fine-tuning and thorough commissioning. These activities typically occur at the end of the project and are often not given enough time to be done properly. Verify during the selection process that the individual controls technician assigned to the project has the required skills and experience to complete the installation and that sufficient time is allocated in the contract. Verify that comprehensive commissioning is completed at the component equipment level and, more importantly, at the systems level. Plan on dedicating time to fine-tune systems operation to actual occupancy and climatic conditions. system operating parameters, out of necessity, are theoretical at the time of design and installation and need to be adapted to actual conditions for peak energy efficiency to be achieved. Within the second year of operation, begin ongoing commissioning and conduct an energy audit. engage operations staff in this effort to maximize additional energy saving opportunities. Environmentally benign products, such as citrus strippers and low-VOC coatings, were used to restore historic finishes, such as the walnut paneling in the executive offices on the first floor. All plaster walls were also restored. Ongoing Commissioning Approximately six months after the recommissioning effort was completed, an ongoing commissioning process was initiated. As a first step in this ongoing commissioning process, an engineering firm that specializes in commissioning was retained to remotely monitor the building management system (BMS) over an approximate one-month period in October/November 2009. Using the remote access to the BMS and the extensive trend logs previously developed, the company confirmed that the systems appear to be well-conceived, programmed with energy conservation in mind, and operating as intended. Other areas that merited additional attention were identified: • Controlling economizer dampers for discharge air temperature; summer 2011 Implementing enthalpy economizer control; • Implementing unoccupied return fan speed control; • Resetting supply duct static pressure setpoint to match demand at VAV boxes; • Resetting chilled water differential pressure setpoint to match demand at chilled water coils; • Controlling the bypass valve to maintain a setpoint minimum differential pressure across the chiller; • Refining hot water flow control sequence of operation; • Implementing unoccupied reheat valve control on VAV terminal units; • Implementing unoccupied setback control on VAV terminal units; and • Implementing unoccupied setback control for the perimeter floor zones. An ongoing commissioning plan was also developed to use the trend logs and actual observation to formally check the operation of all energy consuming systems several times per year. On a daily basis, the facility technician and facility • 26 HigH Performing Buildings

Table of Contents for the Digital Edition of High Performing Buildings - Summer 2011

Commentary
Contents
Stanford University's Y2E2
The Christman Building
The Gettysburg National Military Park Museum and Visitor Center
Cannon Design Regional Offices, Power House
Great River Energy Headquarters
Letters
Products
Advertisers Index

High Performing Buildings - Summer 2011