共查询到20条相似文献,搜索用时 78 毫秒
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1产品的基本情况1.1山东省热电联产工程推广中心、山东省淄博汽轮机厂联合开发、推广的汽轮发电机组,有如下规格(过热蒸汽及饱和蒸汽机组):(1)功率:100KW、150KW、200KW、250KW、320KW、750KW~1500KW(2)进汽压力:1... 相似文献
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热电联产是一项成熟而高效的技术,它既可以为用户节省能源支出,又能降低对环境的排放量。然而由于经济和技术上的原因,目前热电联产并未使大多数家庭用户受益。但热电联产技术的最新进展预示着适用于居家的热电联产(微型热电联产)在不久的将来将成为现实。英国燃气研究与技术中心对这一概念作了分析并开展了广泛的家庭能源需求及可能的发电技术方面的研究。现已确认,微型热电联产可为英国节省可观的能源并可作为现有集中供热锅 相似文献
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小型燃气热电联产具有发电效率高、能源能充分利用、良好的环保、投资成本低、建设时间短及运行简单等优点,可作为今后发展热电联产的首选。根据用户对热力产品的需求不同,联产系统可以有不同的组合形式。但在推广燃气热电联产时必须要有必要的技术准备以及相应的政策。 相似文献
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对大空间的防排烟设计主要参考中庭的要求进行设计,消防验收中对其防排烟系统的有效性只能依据是否符合规范来评定.许多大空间建筑超出了规范涵盖的建筑形式,参考规范中中庭的要求进行防排烟的设计和评价已不再适宜.在澳大利亚热烟试验标准的基础上对某大空间的烟控系统进行测试,通过对烟气层高度和烟气层温升变化等数据的分析,研究大空间烟控系统的排烟效果.结果表明:热烟试验能够模拟火灾烟气的流动,可用于评价大空间排烟系统的有效性及消防验收. 相似文献
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热烟测试用于评价建筑烟控系统的讨论 总被引:4,自引:6,他引:4
烟气是火灾中导致人员伤亡的最主要因素,建筑的消防系统中必须包括有一个良好的烟气控制系统。目前在国内烟气控制系统的有效性评判一般是根据相关规范的规定来得到,而对于超出规范范围的建筑,大都是利用数值模拟来给出其烟控系统的有效性评判,极少通过现场烟气实验来对烟控系统进行测试,且国内尚未形成现场测试的相关标准或规范。介绍了澳大利亚用于烟气控制系统现场测试的热烟测试标准,利用其对一个高大中庭的烟控系统进行了测试。测试过程和结果表明,热烟测试可以较好地用于对建筑烟气控制系统有效性的评判,是一种在消防测试中值得推广的现场实验方法。 相似文献
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In this communication, the thermodynamic performance of an ideal Stirling cycle engine has been investigated. In this regard, the first law of thermodynamics has been employed to determine state of total heat addition, network output, and thermal efficiency with changes in dead volume percentage and regenerator effectiveness. Second law analysis is applied to obtain the trends for the total entropy generation of the cycle. Moreover, the entropy generation of each element involving the Stirling cycle processes is measured. Three objective functions including the output power per rate of mass of the ideal gas working fluid (wnet) and the thermal efficiency (ηt) have been considered simultaneously for maximisation, and the ratio of total entropy generation to rate of mass of the ideal gas working fluid of the Stirling engine is minimised at the same time. Multi-objective evolutionary algorithms based on the NSGA-II algorithm have been employed, while effectiveness of the regenerator, effectiveness of low- and high-temperature heat exchangers, effectiveness of high-temperature heat exchanger, temperatures of the hot side and cold side, and dead volume ratio are considered as decision variables. After the definition of the Pareto optimal frontier, the final optimal solution has been selected using different decision-making methods such as the fuzzy Bellman–Zadeh, LINMAP and TOPSIS. 相似文献
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The ‘compact cogeneration cycle’ and the ‘compact power and triple-effect refrigeration cycle’ have been compared and analysed on the basis of energy and exergy approaches under the same operating conditions. The exergy analysis of both the above cycles leads to a possible performance improvement. The cogeneration cycle has less ‘exergy destruction’ due to irreversibilities in the different components, ‘exergy and energy lost’ to the environment than that of the ‘triple-effect refrigeration cycle’, while the total useful exergy and energy outputs of the cogeneration cycle are greater. The used refrigerants and exhaust gas emissions samples of both cycles are more favourable than the fossil fuel-run engine for reducing the global environment-related problems. The calculation results also show that the associated cycles with the cogeneration cycle have significant higher effect on the exergy and energy efficiencies than that of the ‘compact power and triple-effect refrigeration cycle’. 相似文献