共查询到18条相似文献,搜索用时 140 毫秒
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如何计算热泵系统的可再生能源供热量是我国可再生能源统计中的热点和难点问题。欧盟从2004年开始发布可再生能源统计报告,2013年发布了"各种热泵技术的可再生能源量计算方法指南",指导各成员国开展热泵技术的统计工作。本文研究分析了欧盟热泵系统可再生能源供热量统计方法和要求,包括定义、系统边界设定、计算公式、技术指标及其参数取值等;分析了欧盟热泵系统的发展状况及其对可再生能源的贡献量;按照欧盟的计算方法对我国3个典型城市各种热泵技术的可再生能源供热量进行了测算,对比分析了我国和欧盟计算方法的异同和差距;提出了关于我国热泵系统可再生能源统计工作的思考和建议。 相似文献
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从沼气、热泵、太阳能和风能等方面可再生能源技术存在的问题和解决措施入手,叙述了太原市可再生能源发展的空间,指出,发展可再生能源是调整太原市能源结构,改进太原市环境质量的重大措施,也是保证能源安全的重大措施。 相似文献
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高寒地区百分百可再生能源住宅的可行性分析 总被引:3,自引:0,他引:3
充分利用高寒地区自然资源的优势,将地源热泵技术与被动式太阳房技术,太阳能光电转换技术,几力发电等技术综合利用,对利用百分之百可再生能源满足民用会计室采暖,日常生活用能的可能性进行理论分析和论证,结果表明,高寒地区住宅用能源实现百分百可再生能源是完全可能的。 相似文献
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由于废热的温度低,以往都是通过直接排放的方式排入周围的环境中,造成较大的热污染和能源浪费。利用热泵技术可以较好地回收这部分低温余热,降低油田生产的能耗,达到节约能源和环保的目的。 相似文献
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地热资源及其在热泵供热中的应用 总被引:3,自引:0,他引:3
地热能是清洁的可再生能源。介绍了我国的地热资源及其应用现状,分析了利用低温地热和地热尾水热量的热泵应用技术,比较了地热热泵供热与燃煤和燃气锅炉供热的经济性,同时探讨了提高地热资源利用率的措施。 相似文献
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正水源热泵具有高效节能、属可再生能源利用技术、节水省地、环保效益显著、运行稳定可靠,维护方便等优点。水源热泵技术近几年应用较为广泛,本文结合水源热泵在某玻纤企业的应用,分析水源热泵技术在实际应用中经济性、可靠性、节能性及注意事项。 相似文献
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Large district heating (DH) system accounts for 70% of urban building heating in China. In North China, this proportion is even higher (The North China is the north of the Huai River and Qinling Mountains). Many cities in North China can exploit various kinds of low-grade renewable energy. This paper presents a new heating method to realize renewable energy recovery by absorption heat pumps associated with municipal network. In the DH substations, absorption heat pumps are driven by the exergy-difference originated from the larger temperature difference of heat exchange between primary and secondary heat network. There are two configurations—type I and type II substations based on the temperature of renewable energy. A reasonable parameter setting of system is suggested. The equipment operational performance was optimized based on a practical example. The low-grade renewable energy can be recovered effectively in this method. As a result, both heating capacity and energy efficiency of the DH system can be improved. Furthermore, operating costs may be reduced remarkably, due to the reduction in both the coal consumption of heat production unit and the power consumption of delivery pump. Therefore, the system is superior in energy conservation and has a promising application prospect. 相似文献
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《Energy Policy》2013
The EU renewable energy (RES) directive sets a target of increasing the share of renewable energy used in the EU to 20% by 2020. The Norwegian goal for the share of renewable energy in 2020 is 67.5%, an increase from 60.1% in 2005. The Norwegian power production is almost solely based on renewable resources and the possibility to change from fossil power plants to renewable power production is almost non-existing. Therefore other measures have to be taken to fulfil the RES directive. Possible ways for Norway to reach its target for 2020 are analysed with a technology-rich, bottom-up energy system model (TIMES-Norway). This new model is developed with a high time resolution among others to be able to analyse intermittent power production. Model results indicate that the RES target can be achieved with a diversity of options including investments in hydropower, wind power, high-voltage power lines for export, various heat pump technologies, energy efficiency measures and increased use of biodiesel in the transportation sector. Hence, it is optimal to invest in a portfolio of technology choices in order to satisfy the RES directive, and not one single technology in one energy sector. 相似文献
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Typically, a great deal of heat is wasted in the drainage systems of large-scale public shower facilities, such as those in schools, barracks, and natatoriums. This paper enhances a heat pump system used in public shower facilities for exhaust heat recovery. The system consists of three sections for exhaust heat recovery: solar energy collection system, drainage collection system, and heat pump system. In the system, the energy from the solar energy collection system is used for the initial heating the shower's tap water. Afterwards, the drainage collection system collects the used shower water. Finally, the electric heat pump recycles the exhaust heat from the collected water to heat the shower's tap water. The operational practice of the system was presented. The drainage temperature and equipment capacity was optimized based on a practical example. The advantages of this heat pump system compared to gas-fired (oil-fired, coal-fired, electric) boilers are lower energy consumption, less pollution, and lower operating costs. Therefore, the system is superior in energy conservation and has a promising application prospect. 相似文献
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化学热泵是高效,环保的新型能源技术,在余热回收,储热,可再生能源等领域具有广泛的应用前景.本文综述了化学热泵系统的一般理论和在储热技术中的应用,介绍了化学热泵系统技术在反应与工质对选择,传热强化以及工业研究与应用等方面的发展. 相似文献