空气节能器是美国大中型建筑全空气系统和空气水系统中应用广泛的一种节能设备。ANSI/ASHRAE/IESNA Standard 90.1-2007规定,凡是带风机的冷却系统都应考虑使用空气侧或水侧节能器。介绍了空气节能器的组成、控制方式和4种运行模式,并...空气节能器是美国大中型建筑全空气系统和空气水系统中应用广泛的一种节能设备。ANSI/ASHRAE/IESNA Standard 90.1-2007规定,凡是带风机的冷却系统都应考虑使用空气侧或水侧节能器。介绍了空气节能器的组成、控制方式和4种运行模式,并指出空气节能器运行中容易出现的问题。鉴于我国的气候、大气污染状况及空调系统形式,认为目前空气节能器应用于我国大中型建筑的空调系统中的条件尚不成熟。展开更多
Net-zero and other high performance green buildings normally do or should include optimized solar energy systems.While detailed computer-based energy simulations of buildings’energy systems are becoming near-commonpl...Net-zero and other high performance green buildings normally do or should include optimized solar energy systems.While detailed computer-based energy simulations of buildings’energy systems are becoming near-commonplace for many projects,simple,easy-to-use data tables are beneficial earlier in the design process to help guide preliminary decisions in all projects.Practical lookup tables,and then comparison of the data they contain,are also very useful for teaching new concepts,in this case for learning about solar orientations in sunny locations.Engineers,architects,design-build contractors,students,and other designers of green buildings can benefit through knowing,in advance,how exterior surfaces’orientations increase or decrease the total annual solar energy arriving upon those surfaces.For example,maximizing the incoming energy on a particular roof is advantageous for gathering solar energy for heat or for conversion of that sunlight to electricity,but various requirements often limit designers’choices for surfaces’orientations.This paper presents simple tables that form a tool for making initial decisions on surfaces’directions and slopes;the user can then study various effects further,such as local factors including cloudiness and shading,with detailed software.The classical solar geometry equations utilized are documented here for repeatability of the research,but are not necessary for use of this paper’s tables.Practical examples are given too to help readers use the tables.展开更多
文摘空气节能器是美国大中型建筑全空气系统和空气水系统中应用广泛的一种节能设备。ANSI/ASHRAE/IESNA Standard 90.1-2007规定,凡是带风机的冷却系统都应考虑使用空气侧或水侧节能器。介绍了空气节能器的组成、控制方式和4种运行模式,并指出空气节能器运行中容易出现的问题。鉴于我国的气候、大气污染状况及空调系统形式,认为目前空气节能器应用于我国大中型建筑的空调系统中的条件尚不成熟。
基金supported by Rock Consulting Engineers and the University of Kansas,both of or near Lawrence,KS.
文摘Net-zero and other high performance green buildings normally do or should include optimized solar energy systems.While detailed computer-based energy simulations of buildings’energy systems are becoming near-commonplace for many projects,simple,easy-to-use data tables are beneficial earlier in the design process to help guide preliminary decisions in all projects.Practical lookup tables,and then comparison of the data they contain,are also very useful for teaching new concepts,in this case for learning about solar orientations in sunny locations.Engineers,architects,design-build contractors,students,and other designers of green buildings can benefit through knowing,in advance,how exterior surfaces’orientations increase or decrease the total annual solar energy arriving upon those surfaces.For example,maximizing the incoming energy on a particular roof is advantageous for gathering solar energy for heat or for conversion of that sunlight to electricity,but various requirements often limit designers’choices for surfaces’orientations.This paper presents simple tables that form a tool for making initial decisions on surfaces’directions and slopes;the user can then study various effects further,such as local factors including cloudiness and shading,with detailed software.The classical solar geometry equations utilized are documented here for repeatability of the research,but are not necessary for use of this paper’s tables.Practical examples are given too to help readers use the tables.
