Data Search by General Subjects
Pressure Loss of Air Filters for General Ventilation at High Relative
In anticipation of the new European standard EN 779.2012 for air filters, which classifies air filters based on their lowest filtration efficiency, this article discusses the effect that high humidity has on pressure loss during exposure to different dusts. For example, individual test data show that variations of relative humidity cause significant changes in pressure loss if NaCl is present in the loading aerosol.
Revision Date: 4/22/2015
Tags: 221112 - Fossil Fuel 化石燃料, Camfil Farr, Air Filter, Humidity, Efficiency, Air Intake, Air Filtration, F&S International
European Standard EN779.2012 for Air Filters Measures Minimum Efficiency
This technical paper discusses European standard EN 779.2012, which classifies air filters based on their lowest filtration efficiency. The standard is designed to take into account the deterioration of air cleaning ability due to such factors as electrostatic charges in synthetic filters.
Revision Date: 4/22/2015
Tags: 221112 - Fossil Fuel 化石燃料, Camfil Farr, Air Filter, Efficiency, Air Filtration, Air Intake
Freudenberg offers a wide range of air filters under the Viledon brand name.
Freudenberg offers a wide range of air filters under the Viledon brand name. This technical paper describes the new European standard EN 779.2012, which classifies air filters based on their lowest filtration efficiency.
Revision Date: 4/22/2015
Tags: 221112 - Fossil Fuel 化石燃料, Freudenberg Filtration Technologies, Air Filter, Efficiency, Air Intake, Air Filtration
The New H-100 Gas Turbine: Higher Output and Efficiency
Mitsubishi has traditionally targeted large gas turbines, whereas Hitachi focused on the small and medium-size market with its H-25 and H-100 models, often referred to as the H-series. The merger of the two companies’ thermal power businesses in early 2014 created Mitsubishi Hitachi Power Systems with products spanning from approximately 30 MW to 330 MW in simple cycle. Recent mid-size capacity additions include the H-100(110), H-50, and an uprate of the H-25 gas turbines to 42 MW.
Revision Date: 4/15/2015
Tags: 221112 - Fossil Fuel 化石燃料, Mitsubishi Hitachi Power Systems Americas, Gas Turbine, Efficiency, Turbomachinery International
GE Ups 9HA Specs Following Completion of Validation Testing
After 200 hours of validation testing, GE has increased the efficiency rating for their HA series turbines by about a half point. For example, the 7HA.02 which had a simple cycle net output of 330 MW and 61.2% combined cycle efficiency last year is now rated at 337 MW simple cycle and 61.9% combined cycle efficiency in a 2x1 multi-shaft configuration.
Revision Date: 4/15/2015
Tags: 221112 - Fossil Fuel 化石燃料, GE, H-Class, Gas Turbine, Efficiency, Turbomachinery International
Power Plant Cooling Webinar - Hot Topic Hour November 13, 2014
The webinar focused on the decisions power plants will make relative to steam cooling at both new and existing facilities.
Revision Date: 11/13/2014
Tags: 221112 - Fossil Fuel 化石燃料, 221112 - Fossil Fuel 化石燃料, Nalco, Ovivo USA, National Energy Technology Laboratory, Research Cottrell Cooling, Kiewit, Clarifier, Water Intakes, Water Quality Modeling System, Boiler Feedwater System, 316(b), Regulation, Efficiency, Water Reuse, Wastewater Reuse, Heat Recovery, Water Treatment, Water Conservation
Cooling Tower Calculations by Nick Schroeder - Kiewit - Hot Topic Hour November 13, 2014
Nick provided an interesting perspective on the science of cooling.
Revision Date: 11/13/2014
Tags: 221112 - Fossil Fuel 化石燃料, 221112 - Fossil Fuel 化石燃料, Kiewit, Cooling Tower, Efficiency
Boiler Feedwater Pump Efficiency Optimization - Yokogawa
The optimization of boiler feedwaer operations depends on controlling feedwater and drum pressure. The Yokogawa Dpharp can measure pressures up to 2000 psi and can measure across a range of pressures with high accuracy. Significant energy and maintenance reduction is achieved with optimization of pressure differential.
Revision Date: 9/17/2014
Tags: 221112 - Fossil Fuel 化石燃料, Yokogawa Electric, Boiler Feedwater Pump, Efficiency, Optimization
The Rewards of Pump System Optimization
Typically, when talk turns to power plant pumps, boiler feed and cooling water pumps immediately dominate the discussion. And that’s as it should be: these pumps are critical to a plant’s thermal efficiency and availability. They are also the most costly to produce, operate and maintain, so optimizing their efficiency is imperative. However, in terms of reliability and profitability for the entire plant, it is also prudent (and economically rewarding) to optimize pump system performance throughout the entire station.
Revision Date: 9/8/2014
Tags: Flowserve, Pump, Boiler Feedwater Pump, Cost, Efficiency, Optimization, Power Engineering
ACS 1000 variable speed drives improve efficiency of CHP power plant
The boiler feed-water pumps at Helsinki Energy‘s CHP plant were controlled by wound-rotor motors with slip recovery control system. In order to reduce maintenance costs and further improve the plant‘s efficiency, the pump drive systems were upgraded with four ACS 1000 variable speed drive systems from ABB (each rated at 4500 kW).
Revision Date: 9/8/2014
Tags: 221112 - Fossil Fuel 化石燃料, ABB, Variable Frequency Drive, Boiler Feedwater Pump, Efficiency, Boiler Feedwater Treatment, Finland
Combustion Engine vs Gas Turbine: Ambient Temperature
Gas turbines can experience significant performance derating in hot, humid conditions. While simple cycle efficiency of a gas turbine is approximately 35% at 40°C (104°F), combustion engines can reach 45% or more efficiency.
Revision Date: 4/4/2014
Tags: Wartsila, Gas Turbine, Temperature, Efficiency
Siemens has received new orders for its SGT6-8000H gas turbine, a scaled up version of the SGT5-8000H turbine. The most recent order for three turbines for Florida Power & Light’s Port Everglades Energy Center brings the total to nine sold in the US and 20 worldwide. The first SBT6-800H was installed in May 2011 at the Irsching Power Station in Germany and has achieved combined cycle efficiencies of over 60%.
Revision Date: 4/4/2014
Tags: 221112 - Fossil Fuel 化石燃料, Siemens, H-Class, Gas Turbine, Efficiency, Diesel & Gas Turbine Worldwide
GE Introduces New Gas Turbines Plants Rated at More than 61% Combined Cycle Efficiency
The most effective way to increase combined cycle efficiencies is to develop advanced gas turbine engine technologies capable of operating at even higher firing temperatures. GE is introducing a series of air cooled high efficiency gas turbines with firing temperatures of over 2500°F. The first 7HA turbine will be installed at Chubu Electric Power in Japan in 2016; the first 9HA turbine at EdF Bouchain in France in 2015.
Revision Date: 4/4/2014
Tags: 221112 - Fossil Fuel 化石燃料, GE, Gas Turbine, H-Class, Efficiency, Gas Turbine World, Japan, France
U.S. Gas Turbine Manufacturers Endorse Legislation for a More Efficient Gas Turbine Program
The Gas Turbine Association (GTA), whose technology generates more than a quarter of America’s electricity, on November 21, 2013 endorsed new legislation proposed by Congressman Paul Tonko (D-NY) that would accelerate research and development into a new generation of more efficient U.S.-built gas turbines. As outlined, the Congressman’s bill would authorize an expansion of the Department of Energy’s fossil energy combustion research program to keep pace with the growing role of natural gas in America’s energy mix.
Revision Date: 3/4/2014
Tags: 221112 - Fossil Fuel 化石燃料, 211111 - Crude Petroleum and Natural Gas Extraction 原油和天然气开采, American Gas Association, American Public Gas Association, Gas Turbine Association, National Association of Manufacturers, Gas Turbine, Efficiency, Legislation, USA
This paper discusses the use of HEPA filtration technologies to reduce fouling of compressor blades and consequential power loss. The compressor of a gas turbine consumes a significant amount of energy during operation; consequently, the efficiency of the compressor is very important to maintain optimum performance and has a huge impact on the machine thermal efficiency, power output and its long term component health.
Revision Date: 10/23/2013
Tags: 221112 - Fossil Fuel 化石燃料, European Turbine Network A.I.S.B.L., Compressor, HEPA Filter, Efficiency, Air Filtration
Barry Kellar, President of Freudenberg Filtration - North America, was a key note speaker on “Sustainability” at Filtration 2010 in Philadelphia. Part of this presentation is devoted to the Villedon eee.sy or energy efficiency enhancement system. Fruedenberg not only furnishes the gas turbine inlet filters but also the cooling of the air entering the turbine based on vapor absorption technology. Waste heat from the system is used as the energy source, so capacity increases of up to 22 percent are achieved without parasitic power consumption.
Revision Date: 12/1/2010
Tags: 221112 - Fossil Fuel 化石燃料, INDA, Freudenberg Filtration Technologies, Air Filter, Chiller, Efficiency, Air Filtration, Air Intake, Cooling