Modernising underground compressed air DSM projects to reduce operating costs

2014 ◽  
Author(s):  
C. J. R. Kriel ◽  
J. H. Marais ◽  
M. Kleingeld
Keyword(s):  
Compressed Air ◽  
Operating Costs

scholarly journals Implementation of Energy Harvesting System of Wastes of Compressed Air Wastes for Electrical Steel Cutting Line

2019 ◽  
Vol 108 ◽  
pp. 01005
Author(s):  
Dominik Gryboś ◽  
Jacek S. Leszczyski
Keyword(s):  
Electrical Steel ◽  
Compressed Air ◽  
Operating Costs ◽  
Energy Losses ◽  
Production Plant ◽  
Manufacturing Plants ◽  
Industrial Plants ◽  
Cutting Line ◽  
Energy Harvesting System ◽  
Reducing Costs

The pneumatic systems are commonly used in industrial plants to power pneumatic machines and tools. However, since production of compressed air is quite expensive, manufacturing plants are trying to reduce the operating costs of pneumatic systems by improving their energy efficiency. There are three main methods of reducing costs in these systems: averting energy losses, limiting input energy and harvesting energy wastes of compressed air. In this article, the authors focus on the last method mentioned above - recovering energy wastes from cutting line of electrical steel in a production plant, by using their own invention. The maximum power Pe of the device is changing from 190 W to 60 W and it depends on the value of overpressure in the tank. In one hour, the device generates about 0.07 kWh energy and uses about 3.8 m3 of air in overpressure of 6 bar.

scholarly journals Increasing the Capacity Factors of Base Load Generating Facilities by Storage of Electrical Energy in Aquifers as Compressed Air

1988 ◽  
Author(s):  
Robert L. Longardner ◽  
Anthony Visnesky ◽  
J. R. Strother
Keyword(s):  
Lead Time ◽  
Electrical Energy ◽  
Energy System ◽  
Compressed Air ◽  
Operating Costs ◽  
Magnetic Storage ◽  
Aquifer Storage ◽  
Turbo Machinery ◽  
The Cost ◽  
Base Load

This paper sets out the advantages of using “off-the-shelf” equipment to produce an effective Compressed Air Energy System (CAES) and to develop the storage parameters of those geological entrapments that can be pressurized with air for the generation of electrical energy on demand. The long lead time and the developmental cost needed to perfect turbo-machinery for aquifer storage has been a deterrant on the utilities in their desire to implement air storage in aquifers. Off-the-shelf hardware and predesigned turbo-machinery specified herein is readily adaptable to aquifer storage parameters and can be manufactured without the expense and uncertainty related to developmental hardware. Hence, normal equipment manufacturer’s assurances and guarantees are available for these applications. When compared to the alternative storage opportunities such as; pumped hydro, battery storage and superconducting magnetic storage, the cost of compressed air storage in aquifers is a fraction of the first cost of these alternatives and as good or better in operating costs.

Use of digital microscopy in process control during the manufacture of rubber-modified thermoplastics

1996 ◽  
Vol 54 ◽  
pp. 616-617
Author(s):  
M. T. Dineen
Keyword(s):  
Ccd Camera ◽  
Operating Costs ◽  
Hard Copy ◽  
Production Plant ◽  
Digital Microscopy ◽  
Nih Image ◽  
Transmission Electron ◽  
Conventional Film ◽  
Product Loss ◽  
Image Collection

The production of rubber modified thermoplastics can exceed rates of 30,000 pounds per hour. If a production plant needs to equilibrate or has an upset, that means operating costs and lost revenue. Results of transmission electron microscopy (TEM) can be used for process adjustments to minimize product loss. Conventional TEM, however, is not a rapid turnaround technique. The TEM process was examined, and it was determined that 50% of the time it took to complete a polymer sample was related to film processing, even when using automated equipment. By replacing the conventional film portion of the process with a commercially available system to digitally acquire the TEM image, a production plant can have the same TEM image in the control room within 1.5 hours of sampling.A Hitachi H-600 TEM Operated at 100 kV with a tungsten filament was retrofitted with a SEMICAPS™ image collection and processing workstation and a KODAK MEGAPLUS™ charged coupled device (CCD) camera (Fig. 1). Media Cybernetics Image-Pro Plus software was included, and connections to a Phaser II SDX printer and the network were made. Network printers and other PC and Mac software (e.g. NIH Image) were available. By using digital acquisition and processing, the time it takes to produce a hard copy of a digital image is greatly reduced compared to the time it takes to process film.

Compressed Air for City and Suburban Traction

1897 ◽  
Vol 43 (1101supp) ◽  
pp. 17592-17593
Author(s):  
Herman Haupt
Keyword(s):  
Compressed Air

Use of Compressed Air Motors for Street Cars

1879 ◽  
Vol 7 (182supp) ◽  
pp. 2891-2892
Author(s):  
H. Haupt
Keyword(s):  
Compressed Air
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