نتایج جستجو برای ' Dust '

 Modelling for change management in construction might benefit from experiences from other industries. This study compares reasons for change as well as change practices in interorganizational relationships in construction and information technology. Sixteen contractual relationships have been studied through a questionnaire and interview survey conducted among both clients and providers. Project-type relations are contrasted with more continuous service support contracts. More than their p...

 This paper presents a review and assessment of conformance and interoperability testing methods for product data models used in the construction industry. Conformance testing methodologies, with varying degrees of rigor, have been developed and applied to ensure interoperability across product modeling software applications in other engineering and industry domains, such as, engineering and manufacturing of automotive and aerospace products. Current conformance testing and evaluation of in...

 Today's construction industry relies heavily on high-performing building information modelling (BIM) systems. By deploying the Industry Foundation Classes (IFC) as a description language, these systems offer building information in a widely interoperable format, so that several applications are able to infer extra information. For a certain functionality, IFC shows limitations however. Existing semantic web technology may be able to overcome these limitations, thereby enabling a range of s...

 This paper describes a methodology for the study and modeling of the thermal energy in ceramic frit melting kilns with an oxy-fired combustion process through the development of a numerical simulation in CFD software. Ceramic frits are vitreous compounds that provide glazes with specific properties for use in the coating of other ceramics, especially those of the ceramic tile industry. The aim of this study is to generate technical subsidies in order to support economically viable proposal...

 The aim of process integration is to increase the efficiency and to reduce the energy consumption, operating costs and CO2 emissions of an industrial process. The proposed methodology is applied to a real case study of a cheese factory with non-simultaneous process operations and uses the time average approach combined with restricted matches. This work focuses on appropriate heat pump integration and two different integration strategies are proposed. In the first option, process modificat...

 This paper examines the use of low grade heat from process industries for thermal desalination processes as this is relevant not only to current energy conservation schemes but also may play a role in increasing the capacity to satisfy future water demands. The study focuses on low grade heat sources from a paper mill located on a British coastal area which presents a large quantity of recoverable waste heat at low temperature (<100 °C). Two scenarios are considered: (i) low grade h...

 In this paper a fast numerical simulation tool able to accurately predict steel products heating in an industrial furnace is developed. This prediction tool is set up in two steps: firstly, a complete finite element model of the furnace is built up, and then a surrogate model based on the information extracted from the results of the previous one (alternatively, results of experimental tests could also be used) is developed. More precisely, the surrogate model developed in the second step ...

 The liberalization of the electricity market and the concern for energy efficiency have resulted in a surge of interest in cogeneration and distributed power generation. In this regard, companies are encouraged to evaluate the opportunity to build their own cogeneration plant. In Italy, the majority of such companies belong to the industrial or service sector; it is small or medium in size and the electric power ranges between 1 ÷ 10 MW. Commercially available gas tur...

 Iran has a lot of natural, historical and artificial values for tourism industry, which should consider as national resources and can improve economy of Iran. All existing material and spiritual values in Iran can use as worthwhile capital to develop basis of economy. By knowing and probing in these values, converting values into the dentity of beneficiaries and codifying the comperhensive plan, we can introduce the cultural and history of the country to the world. The purpose of this pape...

 Cubic copper ferrite CuFe2O4 nanopowders have been synthesized via a hydrothermal route using industrial wastes. The synthesis conditions were systematically studied using statistical design (Box–Behnken Program) and the optimum conditions were determined. The results revealed that single phase of cubic copper ferrite powders can be obtained at different temperatures from 100 to 200 °C for times from 12 to 36 h with pH values 8–12. The crystallite size of the...