设备和系统
冷却塔均衡：工程基础和最佳实践
Cooling tower equalization is a critical engineering system that maintains hydraulic balance across multiple cooling tower cells through dedicated piped connections or internal flume boxes. External equalizers must be sized for 15% of the largest tower flow rate and positioned on the deep side of tower basins to prevent operational failures including air entrainment, pump cavitation, and reduced heat transfer efficiency. The system ensures consistent water levels between towers operating on common headers, with proper sizing ranging from 3″ for flows up to 120 GPM to 20″ for flows exceeding 6,930 GPM. Key design considerations include overflow elevation consistency, piping symmetry, valve placement for isolation capabilities, and cleanout provisions for bottom connections. External equalizers provide superior operational flexibility compared to internal flume boxes, justifying additional cost through enhanced maintenance accessibility and system reliability for complex installations.
平衡通风
Air Exchangers exchange stale indoor air with fresh air from the outside. Heat recovery ventilation (HRV) is a system that exhausts air from inside of a home and replaces it with outdoor air. Energy recovery ventilation (ERV) is a system that does everything that an HRV does with the addition of transferring moisture from the exhausted air into the air entering the home and restricting moisture from incoming air. Maintenance of Ventilation Systems
风管气流平衡
Balancing air systems (ductwork) may be accomplished in various ways. The most common method to accomplish ductwork balancing is Proportional Method. Each diffuser is adjusted to supply the right percentage of total air volume in the ductwork.
阀尺寸和执行器选择
In this guide, you will be provided with the 18 steps on how to properly size and select valves, actuators and assemblies.
谷轮制冷手册下载
This is a five series of publications comprising the Emerson Climate Technologies, Inc. Refrigeration Manual. Although each separate part covers a specific area of refrigeration theory and practice, each successive publication presumes a basic understanding of the material presented in the previous sections.
主要的HVAC系统和设备
A comprehensive list of all the major HVAC system types and related equipment
生命周期成本分析方法
The life-cycle cost analysis method is the most commonly accepted method to assess the economic benefits of energy conservation projects over their lifetime. Typically, the method is used to evaluate at least two alternatives of a given project (for instance, evaluate two alternatives for the installation of a new HVAC system: a VAV system or a heat pump system to condition the building). Only one alternative will be selected for implementation based on the economic analysis.
蓄热器 (HVAC)
Thermal energy may be stored in three main ways: – Sensible Storage – Latent Storage – Thermo-Chemical Storage. In addition, the two common thermal storage strategies employed are: – Load Levelling Strategy – Load Shifting Strategy
控件和自动化
HVAC Control Diagrams
In this blog post, we will introduce some of the most common HVAC control diagrams. We will also provide a brief explanation of each diagram and how its components work together. HVAC control diagrams are essential tools for designing, installing, and maintaining HVAC systems. They provide a visual representation of the system’s components, how they are interconnected, and how they are controlled. This information can be used to troubleshoot problems, optimize performance, and make informed decisions about system upgrades.