摘要 :
Maintenance on silicone rubber insulators is quite different from that on porcelain and glass insulators. Sampling result based maintenance is a widely used method for silicone rubber composite insulator maintenance in China. The ...
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Maintenance on silicone rubber insulators is quite different from that on porcelain and glass insulators. Sampling result based maintenance is a widely used method for silicone rubber composite insulator maintenance in China. The principle, test items, measures and other details were introduced in the present paper.
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Predicted model of roughness was built based on three different forms of liquid water on icing surface observed in experiments. Some issues regards to the icing mechanism and mass and heat transfer in roughness conditions were add...
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Predicted model of roughness was built based on three different forms of liquid water on icing surface observed in experiments. Some issues regards to the icing mechanism and mass and heat transfer in roughness conditions were addressed. The classical Messinger ice accretion model was revised in which the remaining liquid water on ice surface was added. Validation of a new icing code based on roughness was performed by comparing the predicted results with experimental data. Factors that affecting the roughness height and its distribution were also investigated.
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This paper discusses a proprietary combustion optimization approach (Stack Air System - SAS) designed to help the industrial boiler operators to comply with the Industrial Boiler MACT, a regulation which monitors hazardous air pol...
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This paper discusses a proprietary combustion optimization approach (Stack Air System - SAS) designed to help the industrial boiler operators to comply with the Industrial Boiler MACT, a regulation which monitors hazardous air pollutants (HAPs) and/or HAP surrogates from industrial boilers and a case study of its most recent installation at Boise Cascade. This combustion optimization provides sufficient turbulence to properly mix fuel and combustion air, and provides longer residence times, generating higher flame temperatures that result in a more efficient combustion process. It generally supplies with PLC controls for combustion air, undergrate, and overfire that interface with the plant's existing control system. Depending on the application, changes to the combustion air system may include multiple combustion optimization levels and the addition of damper controls to partition undergrate air sections. The integrated solutions contain customized additional offerings as necessary such as auxiliary natural gas burners, uninterrupted Power Supply (UPS) and other options for the BCS/BMS systems. These combined solutions meet or exceed expectations and position the facility to achieve a comfortable margin to achieve IB MACT compliance, and in addition can help reduce MACT air pollution control footprint, investment and operating costs.
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摘要 :
This paper discusses a proprietary combustion optimization approach (Stack Air System - SAS) designed to help the industrial boiler operators to comply with the Industrial Boiler MACT, a regulation which monitors hazardous air pol...
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This paper discusses a proprietary combustion optimization approach (Stack Air System - SAS) designed to help the industrial boiler operators to comply with the Industrial Boiler MACT, a regulation which monitors hazardous air pollutants (HAPs) and/or HAP surrogates from industrial boilers and a case study of its most recent installation at Boise Cascade. This combustion optimization provides sufficient turbulence to properly mix fuel and combustion air, and provides longer residence times, generating higher flame temperatures that result in a more efficient combustion process. It generally supplies with PLC controls for combustion air, undergrate, and overfire that interface with the plant's existing control system. Depending on the application, changes to the combustion air system may include multiple combustion optimization levels and the addition of damper controls to partition undergrate air sections. The integrated solutions contain customized additional offerings as necessary such as auxiliary natural gas burners, uninterrupted Power Supply (UPS) and other options for the BCS/BMS systems. These combined solutions meet or exceed expectations and position the facility to achieve a comfortable margin to achieve IB MACT compliance, and in addition can help reduce MACT air pollution control footprint, investment and operating costs.
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摘要 :
Predicted model of roughness was built based on three different forms of liquid water on icing surface observed in experiments.Some issues regards to the icing mechanism and mass and heat transfer in roughness conditions were addr...
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Predicted model of roughness was built based on three different forms of liquid water on icing surface observed in experiments.Some issues regards to the icing mechanism and mass and heat transfer in roughness conditions were addressed. The classical Messinger ice accretion model was revised in which the remaining liquid water on ice surface was added.Validation of a new icing code based on roughness was performed by comparing the predicted results with experimental data.Factors that affecting the roughness height and its distribution were also investigated.
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摘要 :
Predicted model of roughness was built based on three different forms of liquid water on icing surface observed in experiments.Some issues regards to the icing mechanism and mass and heat transfer in roughness conditions were addr...
展开
Predicted model of roughness was built based on three different forms of liquid water on icing surface observed in experiments.Some issues regards to the icing mechanism and mass and heat transfer in roughness conditions were addressed. The classical Messinger ice accretion model was revised in which the remaining liquid water on ice surface was added.Validation of a new icing code based on roughness was performed by comparing the predicted results with experimental data.Factors that affecting the roughness height and its distribution were also investigated.
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摘要 :
A space-qualified silicone polymer, Dow Corning (DC) 93-500, has been used as a spacecraft solar cell adhesive and has been proposed for use in a Fresnel lens solar concentrator for space power applications. Future applications of...
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A space-qualified silicone polymer, Dow Corning (DC) 93-500, has been used as a spacecraft solar cell adhesive and has been proposed for use in a Fresnel lens solar concentrator for space power applications. Future applications of DC93-500 for exterior spacecraft surfaces require an understanding of its overall space environment durability. Vacuum ultraviolet (VUV) radiation is among the space environment elements that can be hazardous to the properties of DC93-500. This paper describes investigations into the effects of VUV radiation on DC93-500 silicone film. Vacuum ultraviolet ellipsometric optical measurements were made on DC93-500 silicone to determine the depth of absorption of vacuum ultraviolet light as a function of wavelength. These data indicate the depth within which VUV radiation can cause material degradation. Laboratory VUV exposures were used to examine effects of various VUV exposure wavelength ranges and various VUV exposure intensities to determine whether there exist wavelength or intensity dependencies of degradation. In one set of experiments, transmittance degradation of DC93-500 was examined as a function of exposure to narrow wavelength bands (～20 nra bandwidth) of VUV in the 140 to 200 nm wavelength range. In another set of experiments, broad spectrum VUV exposures (to wavelengths greater than 115 nm) were used to examine effects of VUV intensity on rates of optical and mechanical properties degradation. Correlations between observed degradation and the measured depth of VUV penetration will be discussed.
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摘要 :
A space-qualified silicone polymer, Dow Corning (DC) 93-500, has been used as a spacecraft solar cell adhesive and has been proposed for use in a Fresnel lens solar concentrator for space power applications. Future applications of...
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A space-qualified silicone polymer, Dow Corning (DC) 93-500, has been used as a spacecraft solar cell adhesive and has been proposed for use in a Fresnel lens solar concentrator for space power applications. Future applications of DC93-500 for exterior spacecraft surfaces require an understanding of its overall space environment durability. Vacuum ultraviolet (VUV) radiation is among the space environment elements that can be hazardous to the properties of DC93-500. This paper describes investigations into the effects of VUV radiation on DC93-500 silicone film. Vacuum ultraviolet ellipsometric optical measurements were made on DC93-500 silicone to determine the depth of absorption of vacuum ultraviolet light as a function of wavelength. These data indicate the depth within which VUV radiation can cause material degradation. Laboratory VUV exposures were used to examine effects of various VUV exposure wavelength ranges and various VUV exposure intensities to determine whether there exist wavelength or intensity dependencies of degradation. In one set of experiments, transmittance degradation of DC93-500 was examined as a function of exposure to narrow wavelength bands (～20 nra bandwidth) of VUV in the 140 to 200 nm wavelength range. In another set of experiments, broad spectrum VUV exposures (to wavelengths greater than 115 nm) were used to examine effects of VUV intensity on rates of optical and mechanical properties degradation. Correlations between observed degradation and the measured depth of VUV penetration will be discussed.
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摘要 :
Traditionally, workflow management systems aim at alleviating people's burden of coordinating repetitive business procedures, i.e., they coordinate people. Web service orchestration approaches, instead, coordinate pieces of softwa...
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Traditionally, workflow management systems aim at alleviating people's burden of coordinating repetitive business procedures, i.e., they coordinate people. Web service orchestration approaches, instead, coordinate pieces of software (the web services), hiding the human aspects that are intrinsically present in any business process behind the services. The recent emergence of technologies like BPEL4People and WS-HumanTask, which introduce human actors into service compositions, manifest that taking into account the people involved in business processes is however important. Yet, none of these approaches allow one to also develop the user interfaces (UIs) the users need to concretely participate in a business process. With this paper, we want to go one step beyond state-of-the-art workflow management and service composition and propose an original model, language and running system for the composition of distributed UIs, an approach that allows us to bring together UIs, web services and people in a single orchestration logic and tool. To demonstrate the effectiveness of the idea, we apply the approach to a real-world home assistance scenario.
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