共查询到20条相似文献,搜索用时 78 毫秒
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热电联产系统供热比计算办法的探讨 总被引:1,自引:0,他引:1
通过对供热比分析计算来进行合理的热电分摊,克服传统的计算缺点;通过对热量法进行修正,将冷源损失合理地分配给供热、发电,以期正确确定供热、供电价格,调动热电双方的积极性。 相似文献
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首次为新模式热电联产低品位供热系统提出了一种用户端高效换热器-新型风机盘管,并对此从技术性、节能发生和经济性等方面进行了探讨和分析,旨在为新模式热电联产供热工程的实施提供理论依据。 相似文献
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建筑物小型热电联产在欧洲的发展 总被引:5,自引:0,他引:5
本文首先介绍了建筑物小型热电联产的特点及其在一些欧洲国家的发展与应用情况。然后指出了小型热电联产对环境污染的改善推广过程中应采取的措施,最后分析了小型热电联产的技术发展特点。 相似文献
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发展小型分散热电联产的研究与探讨 总被引:4,自引:1,他引:4
介绍了小型分散热电联产的特点、主要型式,分析了小型分散热电联产的成因,还介绍了国内外发展简况,并提出了我国发展小型分散热电联产的几点建议。 相似文献
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医院建筑是进行疾病诊断及治疗活动的场所,人员集中性较大且包含一些特殊功能区域。因此,医院建筑对空调系统的要求比一般办公性建筑高,其必须对整个医院提供稳定可靠的能源供应,保证医院正常医疗活动。目前,我国医院建筑的空调能耗能占整个建筑能耗的50%以上,空调节能势在必行。面对新一轮大规模医院建设,需要在设计之初就考虑空调系统节能策略,尤其在空调冷热源的选择时不仅要满足实际需求,同时还需要符合国家节能减排低碳的生态文明原则。以江苏地区某一新建医院为例,针对2种冷热源选型方案,从投资、运行能耗及费用进行了经济性比较分析,得到了适合该医院的最佳方案,对以后此类项目的设计施工提供一定借鉴意义。 相似文献
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Energy consumption in greenhouses and selection of an optimized heating system with minimum energy consumption 总被引:1,自引:0,他引:1
In this paper, heat loss is precisely computed by a proposed code considering different climates. Estimating the costs of different central heating system, unit heaters were selected as the most feasible system. Finally, considering the heating capacity and unit heater's dimensions a computational fluid dynamics model was developed to find the optimized configuration of unit heaters in a typical greenhouse. Using this model, the required thermal load for a greenhouse based on the daily temperature of Arak city in 2017 was computed with a smart control system. It was found that savings in energy consumption were approximately 5447 m3 of natural gas each year. 相似文献
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This study aims at exploiting optimal configurations of technologies combined with co-generation theoretically based on a linear optimization model. With the objective function defining primary energy consumption to be minimized, optimal solutions are derived analytically. They describe the technological configurations as well as associated conditions depending on their final energy demand. An interesting finding is that the essential parameters to determine the configurations are heat, cooling and steam demands normalized by power demand. The optimal solutions are also applied to investigate the competitiveness of co-generation related technologies. The optimal solutions yield critical conditions theoretically, which is useful to understand the priority of the technologies. A sensitivity analysis numerically indicates that absorption chillers can be superior to compression chillers even though the former has lower COP than the latter. Actual data of various types of co-generation are also examined to show the practical competitiveness. 相似文献
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《Geothermics》2005,34(5):632-645
This paper describes a performance evaluation of the Gonen geothermal district heating system (GGDHS) in Balikesir, Turkey, based on energy and exergy analyses. The exergy destructions in the overall GGDHS are quantified and illustrated using energy and exergy flow diagrams for a reference temperature of 6 °C. The results indicate that the exergy destructions in the system occur primarily as a result of losses in the pumps, heat exchangers, and pipelines, as well as losses associated with cooled geothermal waters injected back into the reservoir. These losses amount to 14.81%, 7.11%, 1.06%, and 12.96% of the total exergy input to the GGDHS, respectively. Both energy and exergy efficiencies of the overall GGDHS were investigated to analyze and improve system performance. The efficiencies were determined to be 45.91% and 64.06%, respectively. 相似文献
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A dedicated outdoor air system (DOAS) with rotary desiccant wheel is the combination of a desiccant dehumidification system and a vapor compression refrigeration system. An energy consumption model of this hybrid DOAS is established for its analysis. Coefficient of performance, COP, is appropriately defined for evaluation on performance of the hybrid DOAS. The results indicate that, compared with a conventional DOAS, energy savings are possible for the suggested DOAS, when solar energy or natural gas is used for regeneration. Ventilation air flow rate, temperature or humidity of outdoor air, as well as regeneration-to-process air ratio, influence the energy consumption and the COP of the hybrid DOAS, greatly. 相似文献