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基于热力学目标分析的进料分流预热精馏塔优化措施
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作者 王选 《化工管理》 2021年第23期159-160,共2页
文章针对精馏塔预热效率,从热力学理论的角度进行了传热传质的分析,总结优化的思路,给出需要考虑的优化问题;建立了简单塔和双股进料的复杂塔IRS曲线,给出实现精馏塔节能和正常操作的思路。对精馏塔的研究,以提升热力学效率为主,方法则... 文章针对精馏塔预热效率,从热力学理论的角度进行了传热传质的分析,总结优化的思路,给出需要考虑的优化问题;建立了简单塔和双股进料的复杂塔IRS曲线,给出实现精馏塔节能和正常操作的思路。对精馏塔的研究,以提升热力学效率为主,方法则是将单股进料转变为双股,单就预热靠近再沸器的一侧进行进料,针对预热量和分流率以及进料位置进行调整。 展开更多
关键词 热力学目标 进料分流 预热精馏塔
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Place, Architecture Design and Thermal Comfort: A Municipal Day Care Childhood Center in Col6nia Z3, Pelotas/RS, Brazil
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《Journal of Civil Engineering and Architecture》 2017年第4期364-379,共16页
This article reports the discussion about the multiple relations between architectural design and "place" using two different approaches in order to characterize the interfaces of design challenges. The first is qua... This article reports the discussion about the multiple relations between architectural design and "place" using two different approaches in order to characterize the interfaces of design challenges. The first is qualitative, highlighting the lack of dialogue between the standard-project architecture, the guidelines recommended by the COEDI (Coordenagao Geral de Educao Infantil (General Coordination of Early Childhood Education)) of the Ministry of Education, socio-technical and cultural-environmental context and pedagogy. The second, more quantitative, addresses the problems generated by dissociation between the constructive solutions and the bioclimatic demands of different insertion contexts of architectural design in the Brazilian Bioclimatic Zone 2. Initially planned to use a conventional building system, it was transposed to the Wall System, developed by MVC Componentes Pl^tsticos Ltda. The simulation evaluates and compares the level of thermal comfort of the building with two envelope systems. The study reports the analysis of the thermal comfort of a Type C unit, based on thermodynamic simulation, through the software Design Builder (version 4.2.0.054). The analysis of the building simulation results was based on the adaptive comfort model ASHRAE 55/2010. Later, three optimization measures of the thermal comfort level of the building were tested, based on thermal insulation and absorptance coverage, in addition to sun protection system design for the window frames. Preliminary results for the level of comfort of long permanence environments indicate a tow level of thermal comfort, the 50% in MVC system and around 60% in the conventional system, and also that the greater discomfort comes from the heat. Based on performance optimization measures of building, the MVC system reached 66.4% of thermal comfort compared to 62% in the conventional system. The results show the importance of adapting the standard project to the local climatic context. 展开更多
关键词 PLACE architectural design thermal comfort energy modeling child education.
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