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套式旋风分离器减排水煤气中焦油的性能评价(摘选) 被引量:1
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作者 r.n.singh Shashank Mandovra Jai Balwanshi 《农业工程》 2014年第6期136-137,共2页
生物质气化炉在低于1 300℃情况下产生水煤气,并伴随有重质烃(焦油)、粉尘、烟尘颗粒、碱金属、酸和碱性气体等,这都会导致恶臭气味和排放问题。对于大多数污染物而言,先进的测量技术和减少/去除技术可以降低其排放。但就焦油而言,目前... 生物质气化炉在低于1 300℃情况下产生水煤气,并伴随有重质烃(焦油)、粉尘、烟尘颗粒、碱金属、酸和碱性气体等,这都会导致恶臭气味和排放问题。对于大多数污染物而言,先进的测量技术和减少/去除技术可以降低其排放。但就焦油而言,目前缺乏普遍可接受的、经济的减排技术。设计和开发的套式旋风分离器正是朝着这个方面努力。目前开发的套式旋风分离器利用旋风分离器外5℃、360 L/h流速的循环水可以从水煤气中除去99.60%的焦油。设备简单、便宜,由于循环水可再利用并且减少了冷凝水,因此套式旋风分离器是一种环境友好型设备。该文介绍了用于减少水煤气中焦油含量的套式旋风分离器的设计、开发和性能评价。 展开更多
关键词 套式旋风分离器 生物质 气化炉 焦油
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巷旁充填体强度特性的研究
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作者 S.I.Al-Ameen r.n.singh 宁宇 《煤矿开采》 1993年第1期52-57,共6页
本文介绍了英国研究人员对特克帕克(Tekpak)-XX、海卓帕克(Hydropak)-20、海卓帕克-30、阿斯卓帕克(Astrapak)-3R、弗拉施帕克(Flashpak)、赛森(Thyssen)和阿克布兰兹(Aquablends)充填材料所形成的充填体强度特性的实验室和现场研究情... 本文介绍了英国研究人员对特克帕克(Tekpak)-XX、海卓帕克(Hydropak)-20、海卓帕克-30、阿斯卓帕克(Astrapak)-3R、弗拉施帕克(Flashpak)、赛森(Thyssen)和阿克布兰兹(Aquablends)充填材料所形成的充填体强度特性的实验室和现场研究情况。一种简便的充填体强度测试仪器是针穿硬度计。硬度计的试针穿入阻力与充填体的单轴抗压强度相关。充填体强度的现场测试是在从插到充填体内的三根管子中获得的岩芯试样上做的。同时,在充填体的表面也做了穿入试验。现场测试结果表明,充填体的各部分强度不一致,这主要是充填过程中浆体混合不均造成的。 展开更多
关键词 充填材料 巷旁充填体 浆体 强度
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DECISION TOOLS FOR MULBERRY THRIPS PSEUDODENDROTHRIPS MORI (NIWA, 1908) MANAGEMENT IN SERICULTURAL REGIONS; AN OVERVIEW 被引量:6
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作者 KayvanEtebari L.Matindoost r.n.singh 《Entomologia Sinica》 CSCD 2004年第4期243-255,共13页
Mulberry thrips Pseudodendrothrips mori (Niwa, 1908) is a major pest of mulberry trees recorded from different sericultural regions of the world. The thrips infestation affects the qualitative and quantitative charact... Mulberry thrips Pseudodendrothrips mori (Niwa, 1908) is a major pest of mulberry trees recorded from different sericultural regions of the world. The thrips infestation affects the qualitative and quantitative characters of mulberry leaf, by direct feeding damage to leaves and the ingestion of sap, which in turn affects the silkworm cocoon crop. This is most harmful in dry climates and seasons when heavily attacked plants lose moisture heavily. Under these conditions infestation can seriously deplete yields. The seasonal population fluctuation and the degree of damage caused to the host plant are influenced by various environmental factors including climate, host-plant variety, topography, soil type, and management regimes.This article attempts to review all available documents on mulberry thrips and to discuss the practical approaches for best control of this pest. 展开更多
关键词 桑蓟马 有害生物治理 发生规律 桑树害虫
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A study on the comparative review of cool roof thermal performance in various regions 被引量:2
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作者 Mohan Rawat r.n.singh 《Energy and Built Environment》 2022年第3期327-347,共21页
Energy demand is growing significantly worldwide to create thermal comfort in buildings.Air-conditioning is contributing to energy consumption at a massive scale in the residential and commercial sectors.The roof is o... Energy demand is growing significantly worldwide to create thermal comfort in buildings.Air-conditioning is contributing to energy consumption at a massive scale in the residential and commercial sectors.The roof is one of the most critical components of the building envelopes,and it achieved maximum heat gain in summer,and it covered nearly 20-25%of overall urban surface areas.In this respect,cool roofs are considered one of the sustainable solutions to maintain thermal comfort in buildings.The results achieved from the literature review indicate that cool roof application reduced energy use in the buildings and a useful tool to mitigate Urban Heat Island(UHI)effect.This paper summarizes cool roof thermal performance with different types of surface coatings in different climatic zones for buildings with additional benefits,limitations,and recommendations for future research work.The results of this review can be helpful for engineers,researchers,dwellers,and architectures to have a good understanding of the benefits of cool roofs to mitigate energy consumption demand in dwelling in a sustainable,cost-effective,and energy-efficient way.The average energy-saving effect of the roof is expressed from 15%to 35.7%in different climatic zones(Temperate,Tropical,Composite,Hot and Warm-Humid)as per the literature survey results.Also,the average roof surface temperature reduction is possible from 1.4℃ to up to 4.7℃ using cool roof technology. 展开更多
关键词 Cool roof Building envelope Heat gain Solar reflectance Thermal comfort
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