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西安地热水的性质 ,以市内不同区域地热水物质含量为依据 ,分析了地热水开发利用的方向 .对工程设计中管材选用进行对比 ,提出了适用于地热水的经济型管材 ,并对地热水处理工艺流程常规工艺及实例进行了分析探讨 相似文献
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地热用于油田集输伴热及发电的经济性分析 总被引:1,自引:1,他引:0
提出将油田现有油井采出的地热水用于集输伴热系统维温、发电、供热.介绍了地热水发电方式及设备,对中间介质(双循环式)发电设备的工作原理进行了探讨.结合工程实例,对油田油井地热水用于集输伴热系统维温取代燃油热水锅炉、发电的运行费用进行了分析,经济性良好. 相似文献
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地热水由其高温、高含盐量和多组分的特点,形成对管道及设备产生腐蚀与结垢,对人体、产品和环境等方面造成危害。本文阐述了地热水的特征,分析了腐蚀和结垢机理,进行了缓蚀阻垢的试验研究,试验结果表明,采用水质处理的方法是解决地热水腐蚀和结垢的一种有效途径。 相似文献
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我国东部沿太平洋地区有丰富的低温地热资源,东部地区城市众多、人口密集,有稳定的采暖市场需求,但有3个主要问题需要解决。一是资源能实现可持续利用,地热能在不过量开采下是可再生的。二是要采用能抗腐蚀的地热采暖系统。三是所需要的资金能筹措经营能获利,才能与常规采暖竞争。 相似文献
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将地热水作为农业温室的热源,温室内采用地面辐射供暖技术,充分利用地热资源,降低地热尾水温度。介绍了地热水温室供热系统的流程,计算了温室供热系统的热负荷。结合工程实例,以费用年值为经济指标,对供热系统的设计参数进行了优化设计。 相似文献
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This paper presents an application of an exergoeconomic model, through exergy and cost accounting analyses, to the Gonen geothermal district heating system (GDHS) in Balikesir, Turkey for the entire system and its components. This exergoeconomic model is used to reveal the cost formation process and the productive interaction between components. The exergy destructions in the overall Gonen GDHS are quantified and illustrated for a reference temperature of 4 °C. The results indicate that the exergy destructions in the system occur primarily as a result of losses in the cooled geothermal water injected back into the reservoir, pumps, heat exchangers, and pipelines. Total exergy destruction and reinjection exergy of the cooled geothermal water result in 1010 kW (accounting for 32.49%), 320.3 kW (accounting for 10%) of the total exergy input to the Gonen GDHS, respectively. Both energy and exergy efficiencies of the overall Gonen GDHS are also investigated to analyze the system performance, as these efficiencies are determined to be 42% and 50%, respectively. It is found that an increase of the load condition leads to a decrease in the overall thermal costs, which will result in more cost-effective energy systems for buildings. 相似文献
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Exergoeconomic evaluation on the optimum heating circuit system of Simav geothermal district heating system 总被引:1,自引:0,他引:1
Simav is one of the most important 15 geothermal areas in Turkey. It has several geothermal resources with the mass flow rate ranging from 35 to 72 kg/s and temperature from 88 to 148 °C. Hence, these geothermal resources are available to use for several purposes, such as electricity generation, district heating, greenhouse heating, and balneological purposes. In Simav, the 5000 residences are heated by a district heating system in which these geothermal resources are used. Beside this, a greenhouse area of 225,000 m2 is also heated by geothermal. In this study, the working conditions of the Simav geothermal district heating system have been optimized. In this paper, the main characteristics of the system have been presented and the impact of the parameters of heating circuit on the system are investigated by the means of energy, exergy, and life cycle cost (LCC) concepts. As a result, the optimum heating circuit has been determined as 60/49 °C. 相似文献
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本文介绍了绿色饭店的定义与发展趋势以及地源热泵空调系统的基本原理,以韶山德胜宾馆地源热泵系统供冷、供热、全年提供生活热水为例,与传统空调系统在初投资、运行费用、生态效益三方面进行了比较,阐明了地源热泵在绿色饭店应用的节能性与环保性。 相似文献
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以某低温地热水供暖工程为例,分析了利用板式换热器与热泵机组联合供热的设计和运行情况,指出现有系统存在浪费地热能资源的缺点,提出了两种优化方案,分析比较了两种方案的能耗及性能指标,得出现有地热资源条件下较为合理的运行方式和地热尾水温度。 相似文献
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介绍地热耦合热泵供热系统(以梯级利用地热水热量为原则,采取地热水直接供热与热泵机组利用地热尾水余热的供热系统)设计方案的工艺流程、运行策略,建立供暖期系统能效比的计算模型。结合算例,在分阶段改变流量的质调节运行方式下,对两种地热耦合热泵供热系统的供暖期系统能效比进行计算。方案1:制热设备(地热水换热器、热泵机组)与供热循环泵采取一机一泵的固定设置。方案2:供热循环泵集中并联设置。对于方案1,供热循环泵与制热设备对应关系固定,启用某台制热设备时必须启用相应的供热循环泵。与方案1相比,由于方案2的供热循环泵集中并联设置,供热循环泵与制热设备的对应关系相对松散,匹配更加灵活。方案1、2的供暖期系统能效比分别为9.20、10.03。与方案1相比,方案2的供暖期系统能效比提高9%。 相似文献