A multi-zone air-handling unit was popular several decades ago due to the convenience of small sized modular units, which were inexpensive to install and easily maintained in a mechanical room. The cost and convenience proved to be of little benefit as the units perform poorly from an energy usage perspective. A “three-deck” multi-zone unit is a hybrid of its kind, and it can be very efficient ...

The DOE sponsored Integrated Dry NO&O, Emissions Control System program, is a Clean Coal Technology Ill demonstration, being conducted by Public Service Company of Colorado. The test site is Arapahoe Generating Station Unit 4, a 100 MWe, down-fired utility boiler burning a low sulfur Western coal. The project goal is to demonstrate up to 70 percent reductions in NO, and SO, emissions through th...

The U.S. Environmental Protection Agency (EPA) has announced it will regulate mercury emissions from coal-fired power plants, with proposed regulations to be issued in 2003. The feasibility and cost of achieving mercury emission reductions is thus a subject of considerable current interest. To assess mercury control options, the Integrated Environmental Control Model (IECM) developed for the U....

Full simulation of a building’s HVAC control is important. Good control is the most cost-effective way to reduce plant size and save energy and maintenance cost. To address these issues the control designer needs an easy to use, but accurate tool that simultaneously solves the building thermal, the HVAC system and its control performance. We have developed such a tool. Our new simplified, yet e...

In the city of Vienna approximately 1 Million ton of waste is incinerated annually. Therefore 13 lines of waste incineration including fluidized bed incinerators, rotary kilns and grate furnaces are in operation. Beside municipal solid waste, hazardous waste as well as communal sewage sludge is utilized. All incinerator lines use a wet flue gas cleaning system. Based on the determination of the...