《转速可控型房间空气调节器能效“领跑者”制度实施细则》解读

我国首次实施能效"领跑者"制度,公众参与度和社会认识度亟待提高。本文在分析能效"领跑者"制度背景、转速可控型房间空气调节器市场情况及能效现状的基础上,对《转速可控型房间空气调节器能效"领跑者"制度实施细则》进行了解读,为相关方理解实施细则、实施能效"领跑者"提供了参考。     

变频空调制冷季节能效比(SEER)试验及计算方法

一、概述 2009年3月1日,我国对转速可控型房间空气调节器(以下简称变频空调)实施能源效率标识制度.该制度实施后,企业要在变频空调产品上加贴"中国能效标识".     

房间空调器的热力学完善度分析

通过对定速与转速可控房间空调器能效标准的分析,发现两类房间空调器的能效划分标准、划分等级以及制冷运行室外温度发生时间均有不同的规定。因此对国内市场上的定速房间空调器制冷量和制冷循环的能效比(EER)、转速可控房间空调器制冷量和制冷季节能效比(SEER)、以及定速房间空调器与转速可控房间空调器的能效等级现状等方面进行了调研统计。利用热力学完善度对两类房间空调器能效等级进行计算,发现2008版转速可控房间空气调节器的能效等级的热力学完善度偏低,根据热力学完善度相一致的原则,提出转速可控房间空调器新的能效标准等级的建议。     

变频空调新标准报批开始或2013年发布

近日从有关部门了解到,变频空调能效标准GB21455-2008《转速可控型房间空气调节器能效限定值及能源效率等级》的修订工作已经基本结束,新标准已经完成审定,进入到报批阶段,预计2013年中期将发布实施。在旧版变频能效标准中,单冷和冷暖空调的能源效率评价指标都是一样的,而新修订的标准则对冷暖式空调引入了全新的全年能源消耗效率APF指标,对于转速可控型房间空调能效     

GB 21455-2019中低温制冷工况参数实测值与计算值对能效评定的影响

根据GB 21455-2019《房间空气调节器能效限定值及能效等级》,转速可控型空调器低温制冷工况的制冷量和消耗功率为可选试验,这使得全年能源消耗效率(APF)的评定的一致性较差.本文通过对低温制冷工况的制冷量与消耗功率计算公式的理论分析结合实测发现,转速可控型空调器低温制冷工况采用实测所得APF大于采用计算所得APF...     

热泵型变频空调APF提升方法探讨

按照新版国标GB 21455-2013《转速可控型房间空气调节器能效限定值及能效等级》的要求,本文对提升热泵型变频空调产品APF的方法进行了探讨,提出通过采用小管径换热器、无力矩补偿双转子高效压缩机、自保持四通阀以及找出最佳能效的室内外风量拐点等可有效提高空调产品APF的方法。     

三类产品领跑者制度实施细则发布领跑者制度在中国正式实施

<正>11月2日,国家发展和改革委员会、工业和信息化部、国家质量监督检验检疫总局联合发布通知,对家用电冰箱、转速可控型房间空气调节器、平板电视3类产品实施领跑者制度。通知指出,将于近期开展2015年家用电冰箱、平板电视、转速可控型房间空气调节器能效"领跑者"产品评选工作,请各地节能主管部门、工业和信息化部门、质量技术监督局(市场监督管理部门)按实施细则的要求组织本地生产企业申报,并于11月26日     

房间空调器APF影响因素分析

依据GB21455—2013《转速可控型房间空气调节器能效限定值及能效等级》中关于房间空调器全年能源消耗效率(APF)的计算方法,利用PTC Mathcad Prime数学软件分析额定制冷量、额定中间制冷量、额定制热量、额定中间制热量、额定低温制热量及上述各能力对应的消耗功率对APF的影响,有关结论可为房间空调器产品的设计研发提供参考,具有一定的理论和应用价值。     

国家质检总局房间空气调节器能效标识汁量监督检查取得成效

本刊讯近期,国家质检总局组织开展了房间空气调节器能效标识计量监督检查。检查结果表明,通过连续两年的监督检查,房间空气调节器的能效标识标注信息的真实性和准确性有了大幅度提高。 此次监督检查抽检区域涉及广东、山东、浙江、江苏、安徽等11个省和直辖市。抽样生产企业包括空调器生产企业的总厂和分厂,以分厂为主。     

一批空调、冰箱生产企业实施能效标识喜获嘉奖

中国标准化研究院能效标识管理中心近期首次开展能效标识年度表彰活动,共有12家家用冰箱生产、10家房间空调生产企业、3家单元式空调生产企业在此次评审中获得嘉奖。此次表彰活动就能效标识产品备案情况、在中国能效标识制度进程中发挥的支持作用、节能产品销售情况、相关产品监督检查情况、通过国际质量管理体系和实验室认证等情况等项目指标,请有关专家以公平、公开、公正原则通过无记名打分的方式进行评审。受表彰的企业如下：     

Estimation of Parameters of Universal Distribution of Moments of Failure of Products

A method is proposed for estimating the parameters of a mixture of exponential and Weibull distributions for which the accuracy of preliminary estimates obtained by graphical analysis is refined in accordance with the criterion of maximum likelihood. The efficiency of the proposed method is supported by the results of statistical modeling.     

Evaluation of optical properties of highly scattering media by moments of distributions of times of flight of photons

A novel method for the determination of the optical properties of tissue from time-domain measurements is presented. The data analysis is based on the evaluation of the first moment and the second centralized moment, i.e., the mean time of flight and the variance of the measured distribution of times of flight (DTOF) of photons injected by short (picosecond) laser pulses. Analytical expressions are derived for calculation of absorption and of reduced scattering coefficients from these moments by application of diffusion theory for infinite and semi-infinite homogeneous media. The proposed method was tested on experimental data obtained with phantoms, and results for absorption and reduced scattering coefficients obtained by the proposed method are compared with those obtained by fitting of the same data with analytical solutions of the diffusion equation. Furthermore, the accuracy of the moment analysis was investigated for a range of integration limits of the DTOF. The moment analysis may serve as a comparatively fast method for evaluating optical properties with sufficient accuracy and can be used, e.g., for on-line monitoring of optical properties of biological tissue.     

Assessment of intakes of mixtures of radionuclides

Australia has several uranium mines and a large number of mineral sand mines, with associated processing facilities. Exposures resulting from these mining and processing operations usually involve intakes of mixtures of radionuclides. This work describes the development of a suite of first order, linear compartment models, based on the ICRP Publication 66 respiratory tract model, and an analytical solution to the decay equations, for assessing the consequences of such intakes. The computer programs based on these models directly compute excretion, organ retention and organ and whole-body doses for intakes of either single radionuclides or any mixture of radionuclides belonging to the same radioactive decay chain. The intake can be via inhalation, ingestion or injection, and can be acute, chronic or of limited duration. The starting concentration and degree of secular (dis)equilibrium can be specified for each radionuclide. No assumptions need to be made about the relative magnitudes of the radioactive half-lives of the different nuclides.     

Estimation of potentialities of methods of summation of direct measurement errors

Conventional methods for summation of direct measurement errors are considered. Conditions under which these methods provide consistent results are stated. It is proposed to utilize for characteristic of the total error, its interval estimator or the half-sum of the value obtained by adding up its arithmetic and geometric random errors.Translated from Izmeritel'naya Tekhnika, No. 4, pp. 10–12, April, 1995.     

卧式金属罐容量的测量结果不确定度

本文根据多年的实践检定经验 ,参照JJF1 0 59- 1 999《测量不确定度评定与表示》以及《测量不确定度表达 1 0讲》 ,对卧式金属罐容量的测量结果不确定度进行了评定。     

盐酸浓度不确定度的评估

通过对盐酸浓度标定的过程分析，找出影响结果的各个分量，进行不确定度的评定，按照计量技术规范给出标准的表示法。     

空压机轴承箱蜗壳温度探头油封改造

由于空压机进气侧轴承箱蜗壳温度探头密封效果不好,使空压机及其后续管道受到油污染。后将温度探头的O形圈密封改为骨架油封,杜绝了轴承箱漏油问题。文章简介空压机的结构和技术参数,详细介绍了骨架油封的制作和优点。