热泵在低温地热资源利用中的应用

探讨了低温废热资源有效利用的方法，即将热泵技术应用于低温地热废水供暖。通过对地热及热泵联合供热热源系统的设计计算方案比较，分析热泵参与地热供暖的负荷调节，论证了应用热泵技术是提高低温能源利用率的有效方式。还介绍了工程投资和运行成本的计算方法。     

可再生能源应用的重要领域

建筑能源具有品位低,温度范围窄,与自然能源的温度接近三大特点,这三大特点决定了可再生能源是建筑用能的首选。通过热泵的提升,可以将土壤能、地表水能、海洋能应用到建筑中,这一技术已在国外得到大规模利用。太阳能热发电是另一种最有希望与传统发电方式竞争的可再生能源发电方式。     

欧盟热泵系统可再生能源量统计计算方法的研究和思考

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。     

太原市可再生能源技术规模化发展的问题研究

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。     

高寒地区百分百可再生能源住宅的可行性分析

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。     

热泵热水装置的应用与分析

从提高能源利用效率的角度出发，对利用热泵进行家庭热水供给的太阳能与热泵热水结合装置、空调与热泵一体装置做了总结。介绍了正在进行试验研究的太阳能热泵热水空调一体装置，分析了该装置的运行能耗以及费用。太阳能热泵热水空调一体装置节能效果突出，实用价值明显。     

用热泵系统回收油田低温余热

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。     

地热资源及其在热泵供热中的应用

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。     

水源热泵系统在工业余热回收中的应用

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。     

中低温能源在中国

推动中低温能源的规模化应用是中国重构能源供给格局、实现清洁、低碳与可持续发展的有效途径.然而,目前中国中低温能源尚无完善的统计和明确的专项能源规划,其开发利用情况尚不明确;同时,中低温能源品位低、能量密度小,其开发利用仍然面临获取难、转换方式单一等问题,缺乏有效的技术路线指导.该文从中国能源结构中供需匹配角度出发,对地...     

寒区太阳能_土壤源热泵系统太阳能保证率的确定

在寒冷地区以太阳能、土壤源作为热泵的低位热源对节约能源、保护环境、开发利用新能源和可再生能源具有重大的意义。文中首次提出了土壤源热泵系统在不同的运焦比下的土训温度场恢复率,并以此为指标,衡量土壤源热泵在各种不同运停比下土壤温度场的恢复程度,确定土训源热泵的最佳运停比及太阳能保证率,从而确定太阳能集热装置的容量。     

A new type of district heating system based on distributed absorption heat pumps

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.     

微型风力热泵系统的研究

研究了利用风能的一种新型装置，将风能通过风力叶轮转化为机械能后，通过变速器带动微型制冷用压缩机，压缩机则与其它装置组成布雷顿热泵循环，利用热泵循环产生的热量加热居民水箱中的水，供给居民使用。通过计算分析，该方案是可行的，同时减少了能量转换环节，实现了可再生能源的合理利用，并且从另一个角度解决了风力资源的不稳定性问题。     

太阳能-地源热泵耦合方式的工程应用分析

利用太阳能辅助地源热泵既节能环保又能进一步提高能源的利用率且对环境无污染。从天津地区的太阳光照强度的角度考虑,以利用太阳能提高机组的效率和承担部分建筑物负荷这两种方式辅助地源热泵。从节能和经济性两个角度进行分析并得出结论:在天津地区利用太阳能分担建筑的部分负荷更节能、经济。     

基于溶液除湿的风冷热泵系统性能分析

为了克服利用冷却除湿的风冷热泵空调系统机器露点过低、需要再冷和过热、难以适应显热潜热比例的变化、不能蓄能等缺点,提出基于集热再生器溶液除湿的热泵空调系统。通过济南某工程实例研究表明,与冷却除湿空调系统相比较耗电量减少12.3%,利用太阳能加热溶液除湿具有降低空调除湿能耗、利用可再生能源、减少高品位能源消耗等优势。证明太阳能溶液除湿在空调系统中是处理潜热负荷的理想选择,具有较好的节能性。     

Analysis of the EU renewable energy directive by a techno-economic optimisation model

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.     

Application of an exhaust heat recovery system for domestic hot water

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.     

A review on theory and application of chemical heat pump in thermal energy storage

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.