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朱惠 《制冷空调与电力机械》2014,(6):87-91
针对燃气热电联产系统的特点,本文就系统组成和系统设计要点进行一个简单介绍,并将一些常用计算公式进行归纳和总结,为热电联产系统设计人员提供参考。 相似文献
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中国城乡巨大的有机废物废水蕴藏着可观的资源,废物消化得到的一系列产物即沼气、沼渣和沼液均有可能产生巨大的经济效益。沼气作为可再生的绿色燃料,目前已在供热、热电联产、车用燃料、并入天然气管道等方面展现出良好的应用前景。了解国内外沼气供应技术的发展水平,总结先进技术经验,同时结合我国实际情况,着重介绍沼气并网发展模式,研究沼气掺混工艺、设备及相关技术规定,使沼气成为天然气消费缺口的补充,可以此推进城乡统筹和低碳循环经济。 相似文献
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杨婧文 《制冷空调与电力机械》2014,(6):71-74
该项目为某电厂热电联产项目配套热网工程,项目与原有供热热源相结合,新建及改建热力网、热力站,达到满足城市集中供热的要求。本文对项目的热源构成、供热管网、首站和热电联产供热方案均进行了介绍,并进行了详细的水力计算,分析了热网运行调节方式,最后对管网监控系统进行设计,保证热网安全、可靠、高效运行。 相似文献
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火力发电厂集控楼集中式空调系统设计 总被引:1,自引:0,他引:1
通过对华电黄石热电联产工程中的集中控制室和电子设备间集中空调系统进行了较全面的介绍,阐述了火力发电厂中集控楼集中式空调系统的设计方法。 相似文献
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本文主要介绍美国数据中心的耗能特性与分布式能源热电联产系统的优势,再通过实际案例分析分布式能源热电联产系统在数据中心应用的经济效益和社会效益,为我国数据中心供能方式提出一种新的解决方法。 相似文献
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结合国内外大中型沼气工程情况,以德青源沼气工程为例,介绍了农村废弃物变废为宝的工艺流程,提供了农村能源解决方案,并结合我国沼气工程现有问题提出几点建议,以使大中型沼气工程走向规范化. 相似文献
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The equipment configuration of a landfill gas (LFG) fueled biogas engine driven air source heat pump system was studied. The process flow for collecting and purifying LFG was analyzed, and the LFG collection and purification method was determined. An experimental apparatus was set up, and the effect of biogas engine speed variation on LFG consumption, exhaust fume temperature of biogas engine, recovered waste heat from exhaust fume and cylinder liner, coefficient of performance (COP) of the heat pump and primary energy ratio (PER) of the system were experimentally tested. The results indicated that LFG consumption and biogas engine exhaust fume temperature increased with biogas engine speed. When the biogas engine operated in the 70%–90% rated speed range, the system heat output and exhaust fume waste heat recovery rate would be relatively higher. In addition, the maximum COP and PER reached 4.2 and 1.4 respectively. 相似文献
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广东大规模风力发电场的建设已经日益兴起,风电事业正逐步向产业化、规模化迈进,目前省内风电场多采用就近接入的原则.本文结合实际工程,对风电场接入系统方案进行较为系统性地论证,从技术、经济、风电场短路容量比等方面进行比较,最终推荐风电场接入系统的较优方案,力求为今后风电场接入系统设计提供参考. 相似文献
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A thermal model for a conventional biogas plant has been developed in order to understand the heat transfer from the slurry and the gas holder to the surrounding earth and air respectively. The computations have been performed for two conditions : (i) when the slurry is at an ambient temperature of 20°C, and (ii) when it is at 35°C, the optimum temperature for anaerobic fermentation. Under both these conditions, the gas holder is the major “culprit” with regard to heat losses from the biogas plant. The calculations provide an estimate for the heat which has to be supplied by external means to compensate for the net heat losses which occur if the slurry is to be maintained at 35°C. Even if this external supply of heat is realised through (the calorific value of) biogas, there is a net increase in the biogas output, and therefore a net benefit, by operating the plant at 35°C. At this elevated temperature, the cooling effect of adding the influent at ambient temperature is not insignificant. In conclusion, the results of the thermal analysis are used to define a strategy for operating biogas plants at optimum temperatures, or at higher temperatures than the ambient. 相似文献
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A reduction in the heat losses from the top of the gas holder of a biogas plant has been achieved by the simple device of a transparent cover. The heat losses thus prevented have been deployed to heat a water pond formed on the roof of the gas holder. This solar-heated water is mixed with the organic input for ‘ hot-charging ’ of the biogas plant. A thermal analysis of such a solar water-heater ‘ piggy-backing ’ on the gas holder of a biogas plant has been carried out. To test whether the advantages indicated by the thermal analysis can be realised in practice, a biogas plant of the ASTRA design was modified to incorporate a roof-top solar water-heater. The operation of such a modified plant, even under ‘ worst case ’ onditions, shows a significant improvement in the gas yield compared to the unmodified plant. Hence, the innovation reported here may lead to drastic reductions in the sizes and therefore costs of biogas plants. By making the transparent cover assume a tent-shape, the roof-top solar heater can serve the additional function of a solar still to yield distilled water. The biogas plant-cum-solar water-heater-cum-solar still described here is an example of a spatially integrated hybrid device which is extremely cost-effective. 相似文献
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根据海岸滩涂和浅水海域风电场建设及运行维护工程保障的需求,提出了一系列的工程保障方案,主要包括:适应于潮上带滩涂风电场的系列道路构筑方案、适应于潮间带滩涂风电场的承压浮箱及浮箱栈桥保障方案、适应于潮下带5 m以上水深风电场的浅吃水自升式海上风电场工程平台以及风电场运行维护期间的两栖进入方案,并对这些方案的适应性、可行性及技术要点进行了探讨。提出的系列工程保障方案针对潮上带、潮间带至潮下带不同滩涂区域对施工工程技术的不同要求,以系列技术保障措施分段保障,较好地解决了海岸滩涂及浅水海域风电场建设的工程保障问题。 相似文献