空调水系统节能探讨

近年来,中央空调节能成为节能公司和物业管理公司持续关注的焦点,其中空调水系统的节能是重要的一环,本文通过介绍二次泵系统、冷却水系统、管理节能来说明空调水系统节能的可行性方法。     

建筑智能化过程中的电气节能研究

叙述了我国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,提出对建筑实施供配电系统的节能、照明系统的节能、设备监控系统的节能、使用新型材料节能等节能措施,提高能源利用率,以达到有效节能的目的。     

浅析暖通空调系统的节能

详细介绍了暖通空调系统的节能措施、节能原则、节能途径和方法,以引起人们对暖通空调系统节能的重视,充分发挥暖通空调系统的经济性、节能性、安全性、舒适性。     

液压系统节能分析浅析

通过对液压系统节能技术的分析,从液压系统的主要节能方式、节能回路、节能设计及工作介质等几个方面,对液压系统的节能技术与措施进行了探讨。     

砖瓦机械液压系统的节能途径

本文介绍了砖瓦设备液压系统的节能技术与途径,包括液压系统的基本节能途径和液压系统的调节控制节能技术。基本节能方法主要有元件的使用、提高系统的效率、新型工作介质、设置能量回收装置等。在调节控制节能技术中,介绍了几种提高工作效率和节能的系统,分析和比较了它们的工作原理和节能效果。     

液压系统节能分析浅析

通过对液压系统节能技术的分析,从液压系统的主要节能方式、节能回路、节能设计及工作介质等几个方面,对液压系统的节能技术与措施进行了探讨。     

砖瓦设备液压系统的节能技术

介绍了砖瓦设备液压系统的节能技术与途径。它包括液压系统的基本节能途径和液压系统的调节控制节能技术。基本节能方法主要有元件的使用、提高系统的效率、用新型工作介质、设置能量回收装置等。在调节控制节能技术中,介绍了几种提高工作效率和节能的系统,分析和比较了它们的工作原理和节能效果。     

空调水系统的节能改造设计简析

单幢既有办公建筑空调系统采用单级泵水系统节能潜力非常大,变频改造后的节能效果比较突出。本文从空调水系统的节能潜力、水系统的变频改造过程、变频改造后的节能效果检测等方面,论述了办公建筑空调单级泵水系统节能技术改造的实践经验。     

水泥厂电气设计中的节能措施

电气设计中的节能措施:供配电系统节能、变压器节能、电力拖动节能、照明节能、线路敷设节能、建立完善的电能计量系统.     

2009年度绿色建筑设计评价标识项目()——苏州·朗诗国际街区

苏州·朗诗国际街区以低能耗、高舒适度住宅为设计目标,整合了室内声环境系统、室内光环境系统、室内风环境系统,高效节能外保温系统、高效节能门窗系统、可再生能源利用系统、雨水回收利用系统、中央生活热水系统等十大科技节能系统,节能率高达69%。     

智能照明控制系统在建筑照明中的设计与应用

简要介绍了办公照明、酒店照明、应急照明等公共区域采用智能照明控制系统,实现舒适、节能的渲染环境.     

基于FLS-SVM的地铁车站照明能耗预测

地铁车站由于其特殊环境,照明主要依靠人工照明,照明工作时间长、功耗大是其主要特点,因此照明系统节能存在较大空间。对照明能耗的预测与分析是进行照明节能改造与设计的前提和基础。模糊最小二乘支持向量机因其有着学习速度快、跟踪性能好、泛化能力强、精度高等优点被广泛应用于能耗预测领域。本文利用模糊最小二乘支持向量机建立能耗预测模型,并且采用MATLAB的LS-SVM工具箱对预测模型进行了仿真研究,最后通过与RBF神经网络能耗预测模型仿真对比试验表明了基于最小二乘支持向量机的能耗预测模型拟合度好、精度高,是照明能耗预测的有效方法。     

Performance of induction lamps and HPS lamps in road tunnel lighting

The characteristics and performance of two tunnel lighting systems are investigated in this paper. Tunnel No. 1 is installed with induction electrodeless fluorescent lamps and tunnel No. 2 is installed with high pressure sodium (HPS) lamps. The luminance levels and illuminating uniformity with two systems were measured and analyzed. The spectrum and energy cost have also been studied. Additionally, the responses of drivers were investigated. By the comparison of these two tunnel lighting systems, it was found that the tunnel lighting system with induction lamps shows advantages in high brightness perception to drivers, good color rendering, higher uniformity, better safety perception to drivers and low energy cost over the tunnel lighting system with HPS lamps.     

关于建筑照明节能理论的探讨

建设资源节约型、环境友好型社会众所皆知,节能的概念更是深入人心,如何在建筑照明中实现节能,是人们非常关注的问题。本文对在建筑中采取的一些节能措施,诸如:充分利用天然光、合理选用光源、灯具及附件、采用智能照明控制系统等,进行讨论供设计人员参考。     

Thermal and daylighting performance of an automated venetian blind and lighting system in a full-scale private office

Dynamic envelope/lighting systems have the potential to optimize the perimeter zone energy balance between daylight admission and solar heat gain rejection on a real-time basis, and to increase occupant comfort. Two side-by-side full-scale offices in Oakland, California were built to further develop and test this concept. An automated venetian blind was operated in synchronization with a dimmable electric lighting system to block direct sun, provide the design workplane illuminance, and maximize view. The research program encompassed system design refinements, energy measurements, and human factors tests. In this study, we present lighting energy and cooling load data that were monitored in this facility over the course of a year. Significant energy savings and peak demand reductions were attained with the automated Venetian blind/lighting system compared to a static venetian blind with the same dimmable electric lighting system. Correlations between key weather parameters and cooling and lighting were used to illustrate how the dynamic system was able to simultaneously achieve optimization between lighting and cooling end uses under the full range of weather conditions of this sunny, moderate climate. Energy efficiency estimates were conservative since experience shows that conventional daylighting control systems and manually operated shading devices are rarely used effectively in real world applications.     

Exergy analysis for day lighting, electric lighting and space cooling systems for a room space in a tropical climate

Turning off the electric lamp during available daylight will save electricity, while at the same time thermal energy from solar radiation transmitted through the window will increase the space-cooling load. Therefore, it is necessary to evaluate the whole system that includes not only the room space with the windows and the electric lighting systems, but also the air conditioning system. For analysis of the whole system using different types of energy (i.e. electricity, solar radiation, light emitted by lamps and thermal energy), it is important to take into account the quality of these different types of energy. The concept of entropy and exergy were applied in this analysis. The purpose of this study is to show the energy use for daylighting, electric lighting, and space cooling systems as a series of exergy input, output, and consumption and reveal how a daylighting system consumes solar exergy and how electric lighting and space cooling systems consume exergy from fossil fuel. The methodology to calculate the exergy consumption of the system during a given time was developed first. This method was then applied to the lighting and cooling for a typical room. The study found that electric lighting consumes the lowest amount of exergy while the space cooling consumes the highest amount of exergy for the system.     

Energy conservation and retrofitting potential in Hellenic hotels

Energy consumption data from 158 Hellenic hotels and estimated energy savings that result from the use of practical retrofitting techniques, materials and new energy efficient systems are presented. The data were collected during an extensive energy audit of buildings that was carried out in Hellas, within the frame of a National Energy Programme sponsored by the CEC VALOREN Programme, for energy conservation in buildings. During this short monitoring campaign and on-site visits of a trained panel of engineers to each building, all information related to the building's construction, heating, cooling and lighting systems, and all other mechanical and electrical systems, was collected. The main results and energy characteristics of cooling, heating and lighting on energy consumption and performance are discussed. The annual average total energy consumption in hotels is 273 kWh/m², one of the highest among all categories of buildings. Several scenarios for possible interventions to the building's outer envelope, heating, cooling and lighting systems are proposed and evaluated, in order to assess the effectiveness of various energy conservation techniques. Based on the results from several simulations, it is concluded that it is possible to reach an overall 20% energy conservation.     

Lichttechnisches und energetisches Verhalten von Fassaden moderner Verwaltungsbauten – Teil 1: Lichttechnisches Verhalten

Daylight and thermal energy performance of facades in office buildings, Part 1: Daylight performance. Regarding the impact on indoor illumination facade systems have to provide an appropriate visual indoor environment. In addition daylight penetrating the room through the facades should favourably influence the overall building energy balance. Daylight utilization can directly reduce energy consumption for electric lighting and can indirectly – due to the higher luminous efficacy of daylight compared to commonly used artificial lighting systems – reduce the thermal loads within the conditioned building spaces. In part 1 of this contribution the influence of different facade solutions on room illumination is systematically investigated by means of a parametric study of significant room, outdoor, environmental and climatic parameters for ten facade systems. The facade systems considered are conventional, permanently shaded, and light redirecting systems. The analysis of system performance is based on newly developed characteristics which allow the analysis and optimization of different facade systems under working conditions. Part 2 of the contribution shows the energetic interaction of the facade dependent internal loads by artificial lighting system and solar heat gains.     

某办公楼照明节能方案设计

节约能源是我国的基本国策,论文针对当前办公照明能源消耗浪费严重现象,对莱综合办公楼傲智能照明控制系统节能设计方案.通过采用工业级CAN总线及系统的模块化和可编程控制等先进的科学技术并结合有效的能源管理,降低消耗,减少能源浪费.     

中型办公楼照明节能控制措施的效果

本文就利用照明控制系统和计量系统对中小型建筑物开展节能活动的情况进行介绍。把相应系统导人中型办公楼,实施多项照明控制措施,对节能效果进行了验证。特别是如何结合各个运行点的使用方式,设置恰当的系统,能获得可喜的节能效果。