PDF Publication Title:
Text from PDF Page: 003
Savings on energy costs for Chicago’s annex to McCormick Place is expected to approach $1 million by 1997. energy production. Combustion tur- bine generators activated by utilities to provide extra power during peak demand are, ironically, least efficient in hot weather. As a turbine’s air inlet temperature increases, air density decreases, and generating capacity falls. Lowering that air inlet tempera- ture increases efficiency tremen- dously, producing more power. Lincoln Electric System, the city- owned utility of Lincoln, Nebraska, uses an ice storage system to cool inlet air on a 57-megawatt turbine at its Rokeby Station. On a day with a temperature of 100°F (38°C), the cool- ing increases the turbine’s capacity by 25% compared to that with no inlet cooling, and at no net increase in operating costs. Lincoln also uses ice storage down- town to cool 330,000 square feet (30,660 square meters) in the city and county administration building and the Lancaster County Jail. The utility also will use the system in a new 120,000-square-foot (11,150-square- meter) records-storage and office building. Lincoln took an innovative approach to building and operating its down- town cool storage system. In 1989, the county and utility formed the District Energy Corporation to govern the city and county heating and cooling system. This nonprofit corporation provided the financing to build the ice storage system as part of a district energy system. Lincoln Electric con- tracts with the corporation to handle management and maintenance. Chilled-Water Cool Storage One advantage of using water as a cool storage medium is that con- structing chilled-water storage tanks is economically attractive in larger buildings. Chicago’s McCormick Place One of the world’s largest cool stor- age systems is located at Chicago’s McCormick Place exhibition center. Chicago’s Metropolitan Pier & Exposition Authority chose chilled- water storage for a new annex to McCormick Place. The 2.2-million- square-foot (204,400-square-meter) annex is slated for 1997 completion, but by 1994, McCormick Place was already using off-peak power to store cooling capacity in the new 8.5-million-gallon (32-million-liter) chilled-water tank and apply it by day to cool the center’s existing two buildings. Adding the annex could have meant three separate mechanical systems for the three buildings. Instead, the stor- age tank is part of a $40 million proj- ect to put the entire complex under a 3 How Cool Storage Works in Lincoln Ice makers Pump Chilled water for cooling building Pump Chilled water Electricity input Ice storage tank • Makes ice all night and on weekends • Uses ice in the late afternoon when heat pumps are shut off to reduce electric demand Electricity input Well water Water discharge 70 ̊ F (21 ̊C) 47 ̊ F (8 ̊C) Electricity input 47 ̊ F (8 ̊C) Heat pumps • Extract cooling from well water Lancaster city and county buildings and jail Well water Existing chillers • Provide supplemental cooling During the summer, heat pumps remove heat from the buildings and transfer it to underground water wells. During the cooler late evening and early morning hours, when electricity is less expensive, the heat pumps act as high-efficiency ice makers. This ice is stored to cool the buildings during the afternoon, the peak demand period. Chillers are available to provide supplemental cooling on the hottest days and may also be used for cooling buildings in off-peak periods while the heat pumps are making ice. Water discharge 70 ̊ F (21 ̊C)PDF Image | Keep It Cool with Thermal Energy Storage
PDF Search Title:
Keep It Cool with Thermal Energy StorageOriginal File Name Searched:
20176.pdfDIY PDF Search: Google It | Yahoo | Bing
Turbine and System Plans CAD CAM: Special for this month, any plans are $10,000 for complete Cad/Cam blueprints. License is for one build. Try before you buy a production license. More Info
Waste Heat Power Technology: Organic Rankine Cycle uses waste heat to make electricity, shaft horsepower and cooling. More Info
All Turbine and System Products: Infinity Turbine ORD systems, turbine generator sets, build plans and more to use your waste heat from 30C to 100C. More Info
CO2 Phase Change Demonstrator: CO2 goes supercritical at 30 C. This is a experimental platform which you can use to demonstrate phase change with low heat. Includes integration area for small CO2 turbine, static generator, and more. This can also be used for a GTL Gas to Liquids experimental platform. More Info
Introducing the Infinity Turbine Products Infinity Turbine develops and builds systems for making power from waste heat. It also is working on innovative strategies for storing, making, and deploying energy. More Info
Need Strategy? Use our Consulting and analyst services Infinity Turbine LLC is pleased to announce its consulting and analyst services. We have worked in the renewable energy industry as a researcher, developing sales and markets, along with may inventions and innovations. More Info
Made in USA with Global Energy Millennial Web Engine These pages were made with the Global Energy Web PDF Engine using Filemaker (Claris) software.
Sand Battery Sand and Paraffin for TES Thermo Energy Storage More Info
| CONTACT TEL: 608-238-6001 Email: greg@infinityturbine.com | RSS | AMP |