共查询到20条相似文献,搜索用时 62 毫秒
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1采暖供热概况克拉玛依地区现有采暖供热锅炉房38座(单炉容量≥4th),锅炉台数198台,装机容量1055.6MW,采暖面积约750万m2,年耗煤41万t左右(折合标煤约32万t)。其中4t/h锅炉62台,10座;6t/h锅炉44台,10座;8t/h... 相似文献
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采暖锅炉的节能与环保东北电力学院关忠吉,高永清,邱锡延,关月1前言我国寒冷地区小区供热和独立供热的采暖锅炉,一直沿袭间断运行方式,这种运行方式造成了严重的能源浪费和环境污染。对燃烧It煤所排出的各种有害物质,哈尔滨工业大学提出了如下概略统计结果(见表... 相似文献
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新型节能的介质热管锅炉成套供热系统沈阳汽车建安公司毕慧杰1前言我国北方地区冬季采暖大多用热水锅炉采暖系统供热。这种供热方式设备复杂,投资大;运行管理难度大,费用高,耗能大,综合热效率低。目前在黑龙江省、吉林省等地区的小型采暖系统上陆续推广和应用的介质... 相似文献
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利用电采暖供热系统中每组电热取暖器都可独立供热的特点,应用自动温控技术,采用间断供热、跳格供热的供暖方式,获取校园供暖节能最大成效,在不同地区学校实践证明,比锅炉采暖节能30%~80%。 相似文献
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正国家发改委、国土资源部、国家能源局等6部门2018年1月联合印发《关于加快浅层地热能开发利用促进北方采暖地区燃煤减量替代的通知》。《通知》明确提出,以京津冀及周边地区等北方采暖地区为重点,到2020年,浅层地热能在供热(冷)领域得到有效应用,在替代民用散煤供热(冷)方面发挥积极作用,区域供热(冷)用能结构得到优化。对此,业内专家认为,京津冀地区将成为我国浅层地热能开发利用的重点区域。 相似文献
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以某厂板坯步进梁式加热炉为背景,建立了数学模型,计算出了在相同炉温制度下,普碳钢与某型不锈钢的升温过程,对不同钢种、不同规格的钢坯在炉内混装加热的可行性进行了初步探索。 相似文献
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针对单热源且同时存在散热器供暖与低温地板辐射供暖联网的供暖系统,分析了混水泵并联管网和带旁通的串联管网两种不同形式的供暖系统各自的结构特点、参数选择和优缺点,并给出了两种系统的适用情况。 相似文献
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以加热炉燃耗最低为准则,提出了计算加热炉最佳加热制度的新方法,实践表明,用这种方法计算的结果来指导生产,可以最大程度地降低燃耗,提高金属的加热质量。 相似文献
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W.A. Kamal 《Energy Conversion and Management》1986,26(3-4):337-345
A parametric study of salt-gradient solar ponds of size less than 100 m2 is presented. The study is based on a dynamic model of the pond which takes into account the variation of solar radiation, ambient temperature and the amount of heat extracted with time. Furthermore3 it considers a small-scale pond whose top is covered by a transparent cover, thus considerably reducing the thickness of the top convective zone. The parameters investigated include: pond dimensions, depths of the different layers, starting dates for pond operation and load application, pond insulation and the value of the thermal load. 相似文献
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Shia-Chung Chen Pham Son MinhJen-An Chang 《International Communications in Heat and Mass Transfer》2011,38(3):304-312
A rapid heating cycle has the advantage of improving product quality in injection molding. In this study, gas-assisted mold temperature control (GMTC) was combined with cool water to achieve dynamic mold surface temperature control. By applying the GMTC system on the mold of a rectangular plate, the advantages of using GMTC for injection molding were evaluated and compared with the traditional injection molding process using different gas gap sizes and gas flow capacities. The effect of GMTC on the quality of the part was also studied. Results showed that when GMTC was used, the heating rate can reach 28 °C/s. For an initial mold temperature of 60 °C, and an air gap size of 8 mm, after 6 s heating, the mold surface temperature can reach 147.8 °C, 167.2 °C, and 229 °C with gas flow capacities of 100, 200, and 300 l/min, respectively. When the gas gap size is changed from 4 mm to 8 mm, the uniformity of temperature distribution shows a clear improvement. When GMTC was used for injection molding of parts with fiber additives, the part surface was clearly improved. 相似文献