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1.
本文介绍了东京新宿地区的区域供热供冷系统,其容量一期工程为18万kW,二期为21万kW,世界上规模最大的集中供冷工程,采用热电联产方式后节约能源达33.5%。  相似文献   

2.
This paper aims to verify the advantages of district heating and cooling (DHC) systems in terms of energy efficiency. From the measurement data, the parameters that characterize the energy efficiency of a heating/cooling plant are identified for DHC and an individual building. A simulation model that considers the difference in these parameters is developed. This model examines both the advantages and disadvantages of DHC systems and the effect of each parameter. The results show that the energy efficiency for cooling in DHC systems is superior to that in the case of individual cooling systems because of the “concentration effect” and “grade of operation”.  相似文献   

3.
区域供冷供热系统冷热源方案经济性分析与比较   总被引:5,自引:0,他引:5  
以某居民小区为例,对区域供冷供热系统的四种不同冷热源配置方案从初投资、年运行费用等方面进行比较和分析,从而确定出各个方案的可行性。  相似文献   

4.
本文介绍了区域供热供冷(DHC)的发展状况(日本为例)和有关设计参数。再介绍了热电联产(CGS)的意义和各种方式的应用。最后叙述了多个在城市小区中采用CGS技术的DHC工程状况:  相似文献   

5.
简要介绍了区域供冷供热(DHC)技术在日本东京汐留北地区工程应用的背景,给出了主辅冷热站的DHC系统的流程图,主要冷热源设备的平面布置和其设备性能及系统性能,并着重分析了该DHC系统在负荷适应上热电联产的余热利用,蓄能装置的“电力移峰填谷”,系统运行的安全性和可靠性等方面的特点。  相似文献   

6.
南京鼓楼软件园区域供冷供热系统优化   总被引:1,自引:0,他引:1  
介绍了该区域供冷供热系统.通过与日本东京晴海Triton广场区域供冷供热系统对比得出:在区域供冷系统设计中应尽可能缩短管线长度,能源站应尽量靠近平均容积率大、冷热负荷集中的区域.对泵的选型进行了优化.  相似文献   

7.
本文介绍了常州金禧园大型住宅小区冰蓄冷中央空调系统、电锅炉蓄热采暖系统和电锅炉蓄热生活热水系统的设计方案和特点,并将其和其他家用空调方式进行了初投资和运行费用的比较,简单介绍了冷热量计费系统。指出蓄能技术应用于区域供热供冷系统具有经济、环保的优点。  相似文献   

8.
The district heating and cooling (DHC) system of a seawater-source heat pump is large system engineering. The investments and the operational cost of DHC pipe network are higher than a tradition system. Traditional design methods only satisfy the needs of the technology but dissatisfy the needs of the economy, which not only waste a mass of money but also bring problems to the operation, the maintenance and the management. So we build a least-annualized-cost global optimal mathematic model that comprises all constrict conditions. Furthermore, this model considers the variety of heating load and cooling load, the operational adjustment in different periods of the year. Genetic algorithm (GA) is used to obtain the optimal combinations of discrete diameters. Some operators of GA are selected to reduce the calculation time and obtain good calculation accuracy. This optimal method is used to the design of the DHC network of Xinghai Bay commercial district which is a real engineering. The design optimization can avoid the matter of the hydraulic unbalance of the system, enhance the running efficiency and greatly reduce the annualized-cost comparing with the traditional design method.  相似文献   

9.
污水处理厂采用热泵技术实现区域供冷供热的探讨   总被引:1,自引:0,他引:1  
污水热泵不仅可以部分替代燃煤锅炉供热,减少对化石燃料依赖,还可以实现夏季供冷,减少空调用电负荷。污水处理厂采用热泵技术可以实现区域范围内的冷热联供,使污水综合利用效率最大化。  相似文献   

10.
本文介绍了上海东华大学松江校区冰蓄冷(电蓄热)区域供冷(供热)系统。详细采用计算机对校区内典型建筑的空调负荷特性进行模拟分析,并确定了区域供冷同时使用系数。针对供冷半径的确定,设计中采用了对比分析方法,对选定的400~500m的供冷半径进行了简单有效的经济分析。分析了蓄冷对系统经济性的改善,进一步确定了蓄冷模式下区域供冷优越的经济效益;设计中采用制冰机/冷水机组动态制冰技术及其相应的技术措施。  相似文献   

11.
毙源管理在铁路站房弱电系统中的应用   总被引:2,自引:0,他引:2  
摘要本文阐述了铁路站房能源管理现状,对铁路站房能源管理的典型应用进行了说明。同时根据能源管理系统与铁路站房弱电各子系统的关系,给出了铁路站房能源管理的改进方向和实施步骤,对新的铁路站房能源管理项目建设给出一些建议。  相似文献   

12.
住宅建筑节能对中国社会可持续发展具有重要意义,住宅建筑节能管理是一项复杂的系统工程,涉及多个层面、不同的利益主体。论文在分析中国住宅建筑节能管理现状的基础上,设计了符合中国国情的住宅建筑能耗评估、能效标识制度及其运行机制,同时提出政府应利用财政、税收等经济杠杆对不同利益主体实施激励,并积极培育节能住宅中介评价公司。  相似文献   

13.
针对纺织空调风系统,从运行能耗最优化角度出发,建立主要耗能设备的能耗优化模型。结合实际某细纱车间冷负荷数据、室外气候条件及耗能设备配置,运用MATLAB软件进行优化求解。旨在获得某一工况条件下风系统最小运行能耗及相应的风量、水量参数,为节能提供指导作用。  相似文献   

14.
Energy is one of the main inputs of productions. Therefore, national policies have emphasised on accessibility, availability, and affordability of energy supply. This is very important for energy importers, in particular countries with high dependency on industrial products. Finland is one of such countries that has high-energy consumption due to its cold climate, energy-intensive industries, and low population density. Therefore, security of energy supply to respond domestic consumption is one of the main concerns of the Finnish government. To have a resilience energy supply, it is necessary to understand the energy system in Finland. Energy modelling is a tool that helps policy-makers and researchers to understand the fluctuations and changes in the energy system. This research is to investigate the relationship between energy consumption and selected macro-economic factors in Finland. Therefore, energy consumption in each sector is analysed and the importance of renewable energies is also considered. Finally, a regression model is presented to predict energy consumption.  相似文献   

15.
在建筑能耗定额编制中,样本建筑能耗数据的准确性与其时效性界定密切相关,文中通过对几类典型公共建筑近3年和近1年的能耗数据进行各方面的统计分析对比,发现建筑本体状况的变化相比客观环境因素变化对建筑能耗产生的影响较大,综合考虑准确性和可操作性,建议取建筑近1年的能耗数据作为定额编制的统计样本.  相似文献   

16.
结合具体工程项目,介绍分布式供能系统(太阳能光伏发电系统、三联供系统)的电气设计思路,对各系统并网运行进行分析。  相似文献   

17.
庾季英 《山西建筑》2007,33(12):228-229
简述了建筑节能的意义,通过对晋城市建筑节能现状的分析,从政府供热体制、激励机制、市场节能产品、法律及技术支撑等方面探讨了节能不到位的原因,并从多方面对晋城市建筑节能工作提出了建议,以节约能源、改善环境,从而促进可持续发展。  相似文献   

18.
叙述了我国大型公共建筑电气节能的现状,针对建筑智能化过程中出现的耗能较大的问题,对大型公共建筑的两大耗能系统——照明系统和空调系统提出了节能措施,以提高能源效率,达到有效节能的目的。  相似文献   

19.
为了综合利用地层能源,达到优化资源的目的,提出了地层新能源的概念;并提出了地层新能源利用工程的系统构成及原理,指出该系统由保存和提供能量的储能系统,从储能系统中提取地层能供使用的提能系统,将能量传输到需要场合释放的释能系统,以及监测系统运行效果的自动监测系统构成,其中关键技术是地层储能技术和提能技术.最后,用工程实例验证了地层新能源工程原理的可行性.  相似文献   

20.
The significant and continuous increment in the global electricity consumption is asking for energy saving strategies. Efficient control for heating, ventilation and air-conditioning systems (HVAC) is the most cost-effective way to minimize the use of energy in buildings. In this framework, an energy management and control system (EMCS) has been developed to schedule electricity end-uses in the campus of the Universidad Politécnica de Valencia (UPV), Spain. This paper presents an evaluation performed by using the EMCS of different control strategies for HVAC split systems. It analyzed the effect of different schedules for a common air-conditioning device and demand response strategies are tested in several situations. The economic saving is calculated taking into account the electricity contract clauses. Finally, a test is made for the control of a group of similar devices in order to reduce the maximum peak power in consumption and to obtain a flexible load shape with the HVAC loads. The studies are then extrapolated to a larger system, the whole University campus, for which energy and economic savings are quantified.  相似文献   

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