ASHRAE Journal - March 2010 - 62

HonoRABlE mEnTIon Innovation. Innovations included a highly efficient central cooling plant with thermal energy storage and temperature sensors in each room. Operation and Maintenance. Controls are DDC to the zone level, which allows for remote monitoring. Cost Effectiveness. Energy efficiency measures were adopted into the building’s design. Environmental Impact. The main contribution to reduced environmental impact is through the significant energy reductions achieved in this project. Mark M. Hydeman, P.E., associate member ashrae fellow ashrae Nicolas Lemire, member ashrae Kahnawake Survival School institutional buildings, new Energy Efficiency. Ventilation and operation strategy, heat recov- | Molly E. McGuire, Stanford University Stauffer Building 1 Laboratory VAV Conversion institutional buildings, existing Energy Efficiency. Measures were implemented in the retrofit based on life-cycle cost analysis and evaluation of safety and comfort impacts. Indoor Air Quality. The VAV system dynamically controls the building, addressing two critical laboratory health and safety concerns. Innovation. The implementation and enhancements of the laboratory airflow and room pressurization management system improved energy performance. Construction costs and time were reduced through use of a design assist procurement process. Operation and Maintenance. The system provides feedback and control at the zone level, which improves testing and diagnostics. Cost Effectiveness. Stanford saved $175,000 in the first full year of operation under the new retrofit. Future savings are expected to be matched or exceeded. Environmental Impact. Significant energy reductions achieved in this project reduced environmental impact. Don M. Iverson, P.E., member ashrae Norm Maleng Building, Harborview Medical Center health care facilities, new ery and high efficiency equipment helped meet the designers’ objectives. Indoor Air Quality. Emphasis was placed on the performance of the primary air-handling units and ventilation strategies. Innovation. Both a dedicated system and a centralized system were used. Operation and Maintenance. A centralized building automation system links all mechanical components through a centralized DDC network. Cost Effectiveness. Capital costs were controlled by providing simple systems that rely on well established low-cost technologies and by optimizing equipment selection. Environmental Impact. To prevent major modifications of the site, the building was designed to fit the surrounding area. Natural ventilation is used, where possible, resulting in a reduction of 212 tons (192 Mg) of CO2 emissions per year. Geneviève Lussier, P.E., member ashrae Pavillion Envirotron institutional buildings, existing Energy Efficiency. A sixth air handler was added to gain energy efficiency and reliability, and reduce maintenance costs. Indoor Air Quality. All air handlers are provided with 95% efficiency final filters. Innovation. Extension of the heat recovery system by incorporating another heat exchanger into the run-around heat recovery system associated with the 100% outside air supply/exhaust units. Operation and Maintenance. The addition of the sixth airhandling unit allows maintenance of each unit one at a time. Cost Effectiveness. Energy simulations were provided and numerous HVAC system strategies were evaluated to find the optimal system performance. Environmental Impact. Reduction in CO2 emissions and the new chiller plant uses R-134a with zero ozone depletion potential. 62 ASHRAE Journal Energy Efficiency. Several measures were implemented on both VA-1 and VA-2 ventilation systems, as well as on the different hydraulic systems. Indoor Air Quality. 7,500 cfm (3,540 L/s) of fresh air is introduced during occupied periods, supplying more than double the required fresh airflow. Innovation. The energy required to entirely heat the system’s hot decks can be provided by heat recovery from cold rooms and growth chambers and condensers. Operation and Maintenance. New VFDs added on the supply fans will reduce belt and fan wear resulting in smoother start-ups and less maintenance. Cost Effectiveness. Total energy savings was $65,428 for the year, with a net payback of 1.9 years. Environmental Impact. The reduction in steam consumption resulted in a reduction of 193 metric tons of greenhouse gas emissions. Jonathan M. Mesik, P.E., member ashrae Oak Park Public Works Center industrial facilities or processes, new Energy Efficiency. The LEED-required energy model indicates a 35.2% energy savings over an identical building designed to ASHRAE Standard 90.1-1999. Indoor Air Quality. Pollutants are monitored in vehicle storage, maintenance, shop and administrative areas. Innovation. Demand-based control for ventilation was used to reduce airflows in the vehicle space to save energy. Operation and Maintenance. Electric resistance heating coils were used for heating. A plate style heat exchanger is used for heat recovery. ashrae.org March 2010

ASHRAE Journal - March 2010

Table of Contents for the Digital Edition of ASHRAE Journal - March 2010