Design performance

X-ray tubes are used in a broad variety of technical applications the classical application certainly is the radiographic inspection. For the penetration of high-Z materials, relatively high power is required. This lead to the development of X-ray tubes for laboratory and field use of voltages up to 450 kV and cp power up to 4,5 kW. Because of design, performance and reliability reasons, most of these maximum power stationary anode tubes are today made in metal-ceramic technology. 

The business climate of the 1990s is different from the past. Factors such as increased competition, a global marketplace, rapid technical shifts, and greatly compressed product life cycles constantly open new opportunities for plastics in general and reinforced plastics in particular. Reinforced plastics have become widely accepted for particular appHcations because they offer a combination of design, performance, and economic benefits to the user. These materials have had a proven record of success since the 1940s. 

If detailed manufacturer-specified performance curves are not available for a different size of the pump or operating condition, a best estimate of the off-design performance of pumps can be obtained through similarity relationship or the affinity laws. These are ... 

Inspection does not relieve the manufacturer, the fabricator, or the erector of responsibility for providing materials, components, and skill in accordance with requirements of the code and the engineering design, performing all required examinations, and preparing records of examinations and tests for the inspector s use. 

Operation When operated correctly, thickeners require a minimum of attention and, if the feed characteristics do not change radically, can be expected to maintain design performance consistently. In this regard, it is usually desirable to monitor feed and underflow rates and sonds concentrations, flocculant dosage rate, and pulp interface level, preferably with dependable instrumentation systems. Process variations are then easily handled by changing the principal operating controls—underflow rate and floccirlant dose—to maintain stability. 

Off-design performance of an expander-compressor set can be derived from the curves typically provided by tlie equipment manufacturer. Actual... 

Evaluating off-design performance is strongly recommended for the purpose of improving the operating reliability of both power recovery sets and processing plants. To do this evaluation, a simulation analysis should be based on velocity diagrams, the law of similarity, and expander performance maps. 

It would be an understatement to say that the gas expander turbine forms a major part of the power train. Evaluating off-design performance for the expander installed in the Sinopec Jinan Oil Refinery is presented as an example of an appropriate evaluation method. It should be noted that calculations are based on actual field measurements and plant experience. 

Off-Design Performance—This is an important eonsideration for waste heat reeovery boilers. Gas turbine performanee is affeeted by load, ambient eonditions, and gas turbine health (fouling, ete.). This ean affeet the exhaust gas temperature and the air flow rate. Adequate eonsiderations must be given to bow steam flows (low pressure and high pressure) and superheat temperatures vary with ehanges in the gas turbine operation. 

FIND A LAMINATE THAT WILL MEET THE DESIGN PERFORMANCE GOALS EXPRESSED IN TERMS OF, E.G.,... 

Although an appreciable amount of information is currently available about the factors affecting the design, performance, and installation of deflagration and detonation flame arresters, there is still a lack of information on many other relevant factors. A number of suggested test procedures and... 

Atre, S. Data Base Structured Techniques for Design, Performance, and Management. John Wiley Sons, New York, 1980. 

After designing an approximate unit area requirement, it is important to review the final design performance details with a qualified exchanger manufacturer. See Table 10-42. 

Cooper, K W. and R. W. Erth, Centrifugal Water Chilling Systems Focus on Off-Design Performance, Heating/Piping/Air Conditioning, p. 63, Jan. (1978). 

Become aware that tor any gain there could be a loss not originally included in the design performance. 

Prototyping basically provides a 3-D model suitable for use in the preliminary evaluation of form, design, performance, and material processing of products, molds, dies, etc. When properly used this automatic/fast system can accelerate product development, improve product quality, and time to the market for a product. 

The leak detection rule outlines two design performance standards ... 

Compliance with U.S. EPA s design performance standards can be demonstrated through one-dimensional, steady-state flow calculations, instead of field tests. For detection sensitivity, the calculation of flow rates should assume uniform top liner leakage. For detection time, factors such as drain spacing, drainage media, bottom slope, and top and bottom liners should all be considered, and the worst-case leakage scenario calculated. 

Storage ASME. CGA, CSA, API, NFPA Compressors Safety Certification CSA. UL Compressor Design, Performance Safety API... 

Since 1974, when the first commercially available HPLC electrochemical detector was introduced, an overwhelming number of articles on design, performance, theory and application have appeared in scientific literature. Today HPLC-EC is widely accepted as a sensitive and selective technique for the analysis of electro-active substances. 

Huckins, J.N. Petty, J.D. Prest, H.E Lebo, J.A. Orazio, C.E. Gale, R.W. Clark, R.C. 1997, Important Considerations in Semipermeable Membrane Devices (SPMDs) Design, Performance, and Data Comparability. Presented at the IS Atmual Meeting of Society of Environmental Toxicology and Chemistry San Erancisco, CA November 16, 1997 Abstract PTP055. 

What is the quality of the smdies, e.g., study design, performance, and reporting What are the data gaps ... 

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