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Search Results: 1 - 10 of 9946 matches for " 龚光彩?覮 "
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空气载能空调房间输入■算法 及系统■成本应用分析
光彩?,尹丹
- , 2019,
Abstract: 通过分析辐射孔板的传热特性,结合金属辐射板和对流型空气处理末端的■分析方法,提出了空气载能辐射空调房间的输入■计算方法,并且基于■成本分析法,建立了空气载能辐射空调系统的■成本分析模型.在满足人体热舒适要求的前提下,以单位■成本为评价指标,对空气载能辐射空调系统、毛细管辐射空调系统和分体式空调加地暖系统进行■成本分析.研究发现:运用于办公建筑时,毛细管辐射空调系统的各单位■成本高出空气载能辐射空调系统1~3倍;运用于住宅建筑时,分体式空调加地暖系统全年的产品■单位成本为空气载能辐射空调系统的1.2倍.研究表明空气载能辐射空调系统的总体■经济性更好,该研究结果对空气载能辐射空调后期在工程上的实际推广应用具有一定的指导意义.
Based on the heat transfer process of orifice plate and the exergy analysis method of traditional mental radiant panel and convective air-conditioning terminal, the algorithm of room input exergy for air carrying energy radiant air-conditioning system(ACERS) was proposed. The exergy cost analysis model of ACERS was established by exergy cost analysis method. The unit exergy cost of three radiant air-conditioning systems including ACERS, capillary radiant air conditioning system and a combined system of split air conditioning with floor radiant air conditioning,was compared under the premise of thermal comfort. The results show that the unit exergy costs of capillary radiant air conditioning system are 1~3 times higher than that of ACERS in office buildings. The unit product exergy cost for the year of a combined system of split air conditioning with floor radiant air conditioning is 1.2 times higher than that of ACERS in residential building. It is found that the overall exergy economic performance of ACERS is superior to the other two radiant air-conditioning systems, which is of great significance for future engineering application of ACERS.
基于火用分析和生命周期评价的既有建筑围护结构节能改造
周燕,光彩
科技导报 , 2010,
Abstract: 为了定量系统地评价既有建筑改造的节能效果,提出了火用分析结合生命周期评价的方法。根据热力学第二定律,将能耗转换为火用,分析建筑生命周期中对能源、资源和环境影响较大的阶段,即建材的生产阶段和运行阶段。运用该方法对宁波建筑节能改造实例进行分析,结果表明,在建筑节能改造后的生命周期内,保温材料在生产阶段的能耗需要15年才能与运行阶段节约的能耗相等,CO2排放量需要16a才能与减排的CO2量相等,但对于保温材料,其在生产阶段消耗的火用,远大于其在运行阶段节约的火用。因此,对于既有建筑节能改造,新增保温材料在生产阶段的能耗和CO2排放量不能忽略。对于建造年代久远的建筑,在进行围护结构节能改造时,应当将改造后的节火用效果、节能效果和环境影响作为一个整体进行综合分析。
既有公共建筑改造节能效果实例分析
周燕,光彩
工业建筑 , 2011, DOI: 10.13204/j.gyjz201101012
Abstract: 以某既有公共建筑节能改造为例,对比改造前后全年耗电量及分项能耗,分析不同节能改造措施对应的节能效果;通过改造后现场温度实测,分析说明围护结构改造后对室内热环境的影响。研究结果为夏热冬冷地区既有公共建筑节能改造方向和节能改造重点提供参考。
住宅建筑建材准备阶段能耗和碳排放灰色分析——以合肥地区为例
王立平,,光彩
- , 2016,
Abstract: 建筑生命周期内,尤其是建材准备阶段的能耗和碳排放统计数据相对较少,缺乏精度高且可操作性强的模型.将非等间距灰色系统预测模型应用于合肥地区住宅建筑建材准备阶段能耗和碳排放的分析预测,获得住宅建筑建材准备阶段能耗和碳排放的预测公式,经后验差检验显示预测结果具有足够的精度水平.在此基础上,提出以标准煤作为参考指标的单位碳排放条件下能源利用能力的评价指标.通过对比发现,建材准备阶段单位碳排放条件下的能源利用能力具有较大的提升空间.
The statistics of energy consumption and carbon emission of building during the whole life have the characteristics of poverty and great fluctuation in China, especially during the preparing stage of building materials. Further, analysis models to predict the energy consumption and carbon emission with high-accuracy and operability have not yet been developed. In the present study, the unequal interval grey model was introduced for the analysis and prediction of the energy consumption and carbon emission of the residential building materials at preparation stage in Hefei City. The test results with sufficient accuracy were obtained according to the posterior-variance-test. An evaluation index selecting the standard coal as the reference was proposed on the basis of the proposed model to express the energy utilization ability under unit carbon emission. The prediction results show that the energy utilization ability of building materials at preparation stage is still much lower, which can be improved considerably by comparing with the reference index. The proposed method can be employed to evaluate the energy utilization carbon emission in other building form as well as the unfinished deserted building and vacant house.
太阳能光电-热一体化与热泵耦合系统的热力性能实验研究
吴兴应, 光彩, 王晨光
中国电机工程学报 , 2015, DOI: 10.13334/j.0258-8013.pcsee.2015.04.019
Abstract: 太阳能光电-热一体化(solarphotovoltaic-thermalhybrid,PV-T)系统产生的热水的温度通常达不到生活所需的水温,如果和热泵联合工作,则可以提供较高温度的热水,系统的实用性明显提高。理论上在PV-T提供的热能与热泵吸收的热能相等时,PV-T与热泵能很好的匹配耦合,在此基础上建立了PV-T与热泵耦合的热力分析模型。结合热管式PV-T系统实验装置和热泵实验装置进行测试的实验数据,对该耦合系统的热力性能进行分析,基于两种不同算法,得出了匹配情况下PV-T耦合热泵系统的COP,实验还得出PV-T系统的火用效率为0.08左右,热泵的火用效率为0.38左右,匹配情况下耦合系统的火用效率为0.05左右,该PV-T耦合热泵系统有较好的节能效果。文中对系统提出了节能建议。该研究结果为PV-T与热泵耦合工作的应用及其系统参数的选用提供理论依据。
太阳能光电-热一体化系统的热力性能实验研究
吴兴应,光彩,王晨光,喻骐骥,建文
化工进展 , 2015,
Abstract: 将热管应用于太阳能光电-热一体化(PV-T)系统,在进行光电转换的同时,降低了太阳能电池的工作温度而使其光电效率提高,还回收了部分热能,可以大大提高系统的能量利用效率。研制了热管式太阳能光电-热一体化实验装置,建立了系统的热力性能计算的数学模型,对该实验装置系统进行了光电效率、热效率的测试,并对系统热力性能包括能量效率、(火用)效率进行了计算和分析。实验结果显示系统的光电效率为4.7%左右,系统的综合效率为49%左右,(火用)效率最大为8%左右,比单独利用太阳能光伏发电系统的效率有显著提高。综合比较了几种太阳能光电一体化系统,该热管式PV-T系统有较好的节能效果,并对系统提出了优化和节能建议。
基于室内空气稳定性的污染物侧送风数值模拟
光彩,徐春雯,罗泓锋,韩冰
科技导报 , 2011, DOI: 10.3981/j.issn.1000-7857.2011.04.008
Abstract: 在室内空气稳定性的概念和判断依据基础上,对其进行数学验证,根据环境温度垂直递减率的正负将其分为稳定型、中性稳定型和不稳定型。建立不同温度梯度下的数学、物理模型,并利用计算流体动力学(CFD)软件对NH3等污染物侧送风条件下,在室内传播的特性进行模拟,得出不同稳定性条件下污染物扩散的规律。在对污染物下进上出的通风方式的研究中发现,污染物在不稳定型条件下能较快到达出口,而稳定型条件下易在室内聚积难以排除室外。不稳定型利于湍流的形成和发展,稳定型抑制湍流的发展,但是在较大的雷诺数下(入口速度3m/s)空气稳定性对污染物扩散规律的影响并不明显。对于不同的污染物气体,与NH3相比,CO2的稳定性更好,不易被排出。同时,减小顺温温差会减弱空气的不稳定性,减小逆温温差同样会降低空气的稳定性。但环境温度梯度对稳定性的影响程度与雷诺数大小密切相关。该研究为室内污染物控制策略提供依据。
套管式地埋管换热器设计计算方法
光彩,陈帆,苏欢,易治平
科技导报 , 2013, DOI: 10.3981/j.issn.1000-7857.2013.31.008
Abstract: 以线热源理论为基础建立套管式地埋管换热器换热的简化模型,给出基于热响应试验的套管式换热器设计计算方法。以湖南省韶山市一实际工程为实例对钻孔现场进行测试,采用该方法可计算出其综合导热系数和钻孔内总热阻。同时对该工程的另一钻孔进行双U测试及计算,以此作对比分析。考察两组测试在综合导热系数、钻孔内总热阻、换热温差和换热量上的内在联系。计算结果和测试结果表明,该计算方法在套管式换热器设计上具有适用性,避开了钻孔内层层热阻的复杂计算,简化了计算过程,可为实际工程提供计算参考。
围护结构或被动式建筑的绿色性评价方法
光彩,傅沐书,蔡立群,王平
- , 2017,
Abstract: 以湖南地区5栋公共建筑为研究对象,基于全寿命期理论以及火用方法,分别计算了其全寿命期(即从围护结构形成阶段到拆除全过程)的建筑能耗、火用耗、二氧化碳排放量以及成本.在此基础上,引入各个建筑的火用能比和绿色性两项指标.采用层次分析法,得到建筑的绿色性指标,并对各个建筑的绿色性指标进行对比分析,结果表明,办公建筑的绿色性明显优于商业建筑.两个指标的交叉对比结果表明,火用能比存在一个最优的范围.火用能比反映建筑对优质能源的利用或消费程度,绿色性指标综合考虑了建筑全寿命期的资源消耗、成本投入和环境影响,因而这两项指标可作为现有可持续建筑评价体系中被动式节能条款的补充,具有一定合理性.
The energy consumption,exergy consumption,CO 2 emissions and cost of five public buildings in Hunan area in its life cycle were calculated based on life cycle theory and exergy method,taking into account the formation of building envelope. On this basis,two indicators including the building exergy-energy ratio and greenness were introduced. The greenness of each building was obtained by analytical hierarchy process. The comparison of the greenness indicators shows that office buildings are much better than commercial buildings in terms of greenness. Comprehensive comparison of the two indicators illustrates that there is an optimal range for exergy-energy ratio. The greenness indicator takes into account the building life cycle resources consumption,cost input and environmental impacts,and the exergy-energy ratio demonstrates the use of high quality energy. Therefore,these two indicators can serve as a supplement to the passive energy saving clauses in the existing sustainable building assessment systems.
建筑围护结构节能设计火用分析及CO2排放研究
光彩,蔡立群,王平,王莹,黎龙
- , 2015,
Abstract: 以夏热冬冷地区株洲市某办公楼为研究对象,基于全生命周期理论与火用方法,对建筑围护结构不同节能设计方案能耗、火用耗及CO2排放量进行分析,并结合热经济学原理,建立了围护结构火用成本分析模型来综合评价节能设计方案的经济性及节能性.结果表明:当节能设计后建筑运行阶段节约的能耗或CO2减排量大于因节能而投入的能耗及CO2排放量时,才能达到真正意义上的节能.文中方案1,方案2中建筑运行阶段节约的能耗分别需要10年,11年才能抵消建材生产阶段产生的能耗,CO2减排量分别需要4,5年才能抵消建材生产阶段产生CO2排放量.且建材生产阶段的火用耗远远大于节能设计后运行阶段节火用量,火用成本的分析结果表明较低的单位火用成本,意味着选用投资较少的节能改造方案,较多的使用低品位能源,得到了火用效率较高的制冷量、制热量,建筑整体节能性和可持续性高.
To achieve the comprehensive assessment goal of economy and energy conservation in energy-saving design scheme selection, based on the life cycle theory, exergy analysis method and thermo-economics, the exergy consumption and CO2 emissions of different energy-saving design schemes and exergy cost models were evaluated and built. The analysis of the two energy conservation schemes of an office building in Zhuzhou indicates that, to reach the true sense of energy conservation, energy saving and CO2 emission cuts in building operation stage should be greater than the consumption in building production stage. The energy consumption and CO2 emission in the building production stage of Scheme one and Scheme two will need 10, 11 years and 4,5 years respectively to be offset. And the exergy consumption in the production stage is far more than the exergy saving in the operation stage. The analysis result of exergy cost reveals lower exergy cost means less investment, more low-grade energy usage and higher exergy efficiency. It shows the energy saving property and sustainability of buildings.
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