辐射吊顶在天津某音乐学院的设计应用

本文以天津某音乐学院为例,对音乐教学房间采用辐射吊顶系统的设计方案进行分析.通过分析,该音乐学院音乐教学房间采用辐射吊顶空调系统,需结合其他辅助空调方案一起使用才能满足房间的热湿特性需求.同时,本文对该项目辐射吊顶+冷梁+独立新风系统的设计参数,空调末端,冷热源与水系统,防结露及消声降噪措施进行了介绍,为辐射空调系统在其他同类项目中的应用提供参考.     

徐州云龙湖科技住宅项目辐射空调系统设计

本项目为采用毛细管辐射空调末端的五恒科技住宅.本文对该项目辐射空调系统设计做详细介绍,包括空调冷热源方案配置,空调风系统、水系统设计,辐射空调末端及置换新风系统设计,以及空调系统的自动控制和节能设计,并对设计中的经验教训做出总结.     

德州市新城综合楼空调设计

介绍了该工程的空调设计,包括设计参数、空调冷热源、水系统、风系统、供暖系统、防排烟系统、自控系统等。主楼大堂冬季局部采用地板辐射供暖系统加循环风系统以降低能耗。     

毛细管辐射空调系统简介及设计要点分析

毛细管辐射空调系统是温湿度独立控制的新型空调技术,是对传统空调技术的挑战和创新.主要介绍了毛细管辐射空调系统的工作原理,系统组成及末端特点,并从其系统特点和设计要点方面进行了简要分析.介绍了现在的研究成果,并指出今后的研究方向.     

毛细管辐射空调系统运行的经济性分析

介绍了毛细管辐射空调系统概况。以天津地区某居住建筑为研究对象,采用BIN气象参数、部分负荷率下冷热源机组性能系数,对土壤源热泵＋风机盘管、土壤源热泵＋毛细管辐射空调系统、家用空调机＋集中供热的经济性进行了比较,土壤源热泵＋毛细管辐射空调系统的经济性最佳。     

室内活动馆暖通空调设计

介绍了某室内冲浪馆的暖通空调设计。包括设计参数、除湿设计、空调设计和防排烟设计等内容。详细阐述了冲浪馆暖通空调设计过程与系统的选择,通过设计计算和方案比较,确定采用空调冷却除湿方案;夏季采用全空气空调系统降温;冬季采用低温地面辐射供暖系统与空调送热风相结合的供暖方式。并总结了设计应注意的问题,为类似工程设计提供了一定的参考。     

北京民航四机位机库暖通设计

介绍了北京民航四机位机库暖通空调各系统的设计要点,着重叙述了换热系统和地板辐射供暖系统的设计参数、方案特点、控制原理和施工要求等。     

辐射空调在某住宅建筑中的可行性和经济性分析

辐射空调是一种新型、节能的空调方式,但其可行性与节能性与气候条件、建筑类别等密切相关.本文采用EnergyPlus软件结合典型气象年参数(CTYW)对西安某高层住宅建筑的能耗状况进行了模拟,对比和分析了变风量空调系统、风机盘管系统、辐射空调系统加自然通风等几种空调方案对建筑全年能耗的影响,表明了顶板辐射加自然通风这种空调型式适合在西安气候条件下的住宅建筑应用,可达到节能效果,是住宅建筑空调系统设计的优选方案之一.     

高舒适度低能耗空调系统在南京奥体新城紫薇园的应用

文章针对南京奥体新城紫薇园住宅项目空调系统,介绍了温湿度独立控制空调系统设计方法,介绍了土壤源热泵冷热源系统、毛细管辐射平面末端系统、热泵式溶液调湿独立新风处理方式、地板置换式送风方式等空调技术及工程应用情况.阐明了该项目空调系统的高舒适度低能耗特点和优势.     

深圳机场信息大厦的空调设计

介绍了深圳机场信息大厦空调系统设计的特点.给出了空调主要设计参数、空调系统形式.设计时结合建筑的特点,采用新的送风方式.重点阐述了空调方式、防排烟、电子计算机房空调系统、空调自控及节能等方面的设计.分析了变频控制在空调节能运行中的重要性,强调排风系统在通风空调系统中的作用.     

冷却塔设计热力性能的确定及CFD模拟软件在冷却塔设计中的工程实践

在循环冷却水系统设计中,针对冷却塔的热力性能选型参数差异较大的情况,从冷却塔热力性能允许偏离限值及气流环境影响两方面进行了分析,提出了合理确定冷却塔设计热力性能的技术要点。并分析了冷却塔几种典型的不利安装条件,分析了其气流特点、主要影响因素及布置要点。并结合某区域供冷站工程的冷却塔设计,介绍了CFD模拟软件在冷却塔设计中的应用。     

对北京地区办公建筑设计冷负荷与耗冷量的分析

根据《公共建筑节能设计标准》(GB50189—2005)中关于建筑热工的规定,以北京地区某办公建筑模型为例,计算了冷负荷、新风负荷和耗冷量,分析了影响设计冷量的主要因素,给出冷指标的限制范围,并提出合理选择相关参数的建议。     

Practical cooling capacity estimation model for a suspended metal ceiling radiant cooling panel

The main thrust of this research was to develop a simplified cooling capacity estimation model for a suspended (free-hanging type) metal ceiling radiant cooling panel. By statistically analyzing panel performance data generated by a validated analytical panel model, the impact of various design parameters and their combinations on the panel cooling capacity was estimated. And then a linear regression equation was derived as a function of major design parameters and interactions which have significant effects on the panel capacity. In this analysis, eight single parameters and 13 two-factor interactions showed significant impact on the panel cooling capacity. Consequently, a simplified regression model for a free hanging panel was derived as a function of those selected parameters. The proposed model could estimate the panel cooling capacity not only for the natural convection but also for the mixed convection condition present in a mechanically ventilated space.     

污水源热泵系统优化设计

针对城市原生污水源热泵系统的特点,以费用年值为目标函数,建立了系统优化模型,并编制了计算程序.在保证机组安全可靠地满足建筑物冷热负荷需求的前提下,根据不同的污水温度,对系统关键设计参数进行了优化.结合实际算例,给出了系统的最优参数设计值,分析了个别参数对系统费用年值和性能的影响.该方法兼顾了运行的可靠性与经济性,可实现系统内各部件的最优匹配.     

地板辐射供冷系统分析

本文介绍了地板辐射供冷系统的室内外设计参数选取和负荷计算方法,通过采用CFD数值模拟的方法,分析了辐射供冷地板系统在不同的室内设计温湿度及冷水温度条件下的供冷量,冷损失量及表面温度等。应用该方法可以建立系统设计查找表格为地板辐射供冷系统设计提供基础数据。本文也给出了埋管辐射地板的系统布置方式及设计流程等。     

空调冷却水系统设计

论述了空调冷却水系统设计的基础参数，简述了空调冷却水系统设计的类型及其特点，提出了冷却塔设置应注意的几个问题及水质处理方法。     

Sensitivity analysis of predicted night cooling performance to internal convective heat transfer modelling

The potential of night cooling, a passive cooling technique of growing interest, is typically investigated by numerical means. In particular multi-zone energy simulation is currently appraised for building design. Unfortunately, in addition to the inaccurate approximation of an ideally mixed room, the implemented empirical convective heat transfer coefficients (CHTCs) only apply to specific flow regimes - forcing to use arbitrary correlations and, thus, possibly limiting the usefulness of the simulation results. Therefore, the authors of this paper investigate the sensitivity of the night cooling performance to convection algorithms. First, the authors examine the applicability of convection correlations for real building enclosures, extracted from literature. Subsequently, simulations of a night cooled office room during summertime of a moderate climate (Belgium) are carried out in TRNSYS, using different convection correlations in addition to varying design parameters. The results show that the choice of the convection algorithm strongly affects the energy and thermal comfort predictions. More importantly, the convection algorithm is of the same importance as the design parameters - making an exact definition of the CHTC crucial. Therefore, additional research by experiments or airflow codes, based on fluid dynamics, is regarded necessary.     

某夏季干热地区办公大楼报告厅夏季空调设计

以新疆某办公大楼报告厅空调系统设计为例,分析了夏季干热气候区室外空气设计参数的特殊性。着重介绍了变制冷剂多联机+全热交换系统、风机盘管+新风系统、一级蒸发冷却系统、二级蒸发冷却系统及采用屋顶全新风机组,并结合本项目对这几种不同的空调系统进行分析与比较,确定了适合本项目的空调系统形式。     

洛阳电信大楼通风空调设计

分别从设计参数、空调负荷、冷热源、冷冻水系统、通风与防排烟设计等方面介绍洛阳电信大楼通风、空高工程设计，着重地下汽车库排烟设计部分；并结合工程实际，对今后设计提出了建议和看法。     

CFD study of the thermal environment in an air-conditioned train station building

This study used the computational fluid dynamics (CFD) method to evaluate the indoor thermal environment of an air-conditioned train station building under three types of air-conditioning design schemes. The impacts of air-conditioning design parameters such as supply air temperature, velocity, altitude and angle of incidence were also investigated. The numerical results showed that if the waiting hall and entrance hall of the train station building were connected to each other and served with the cooling air respectively, when the cooling loads in the two halls were fixed and air-conditioning systems were designed properly, altering largely the cooling air supply scheme in the waiting hall while keeping the cooling air supply scheme in the entrance hall unchanged would have significant effects on the air distribution and thermal comfort in the occupied region of the waiting hall but may have some minor effects on those in the occupied region of the entrance hall. The uniformities of velocity and temperature distributions in the occupied region of waiting hall were satisfactory when side supply scheme was applied. Changing supply air temperature, velocity, altitude and angle of incidence would yield great effects on the thermal environment in the train station building. For the stratified air-conditioning design in the train station building, in order to obtain the satisfactory thermal comfort in the occupied region, the mid-height of the building was found to be a good position for the cooling air supply and the supply angle of 0° from the horizontal could be recommendable. The results also indicated that analyzing the effects of air-conditioning design parameters on the building environment with CFD was an effective method to find the way to optimize the air-conditioning design scheme.