基础与工程
管道压降计算：基本方程和指南
Explore the essentials of pipe pressure drop calculations, including key factors affecting pressure drop, commonly used equations, and practical tips for optimizing fluid transportation systems. Learn about software and tools that can assist in streamlining your calculations and enhance the efficiency of your projects. In this blog post, we discussed the importance of understanding pipe pressure drop calculations and their relevance across various industries. We introduced key factors affecting pressure drop, such as pipe diameter, length, flow rate, fluid properties, and pipe roughness. We also examined several equations for calculating pressure drop, including the Darcy-Weisbach, Hazen-Williams, and Colebrook-White equations, discussing their applicability and limitations.
HVAC 设计的最佳实践
In this blog post, we’ll discuss some of the key principles and best practices in HVAC design that every engineer should know. HVAC design is an essential aspect of creating comfortable and efficient indoor environments. As an HVAC-R engineer, understanding the principles of HVAC design is crucial for designing effective, reliable, and sustainable heating, ventilation, and air conditioning systems.
显热、潜热和总热
Sensible heat, latent heat, and total heat are important concepts in HVAC. Sensible heat is the heat that is transferred to or from a substance without causing a change in phase. Latent heat is the heat that is transferred to or from a substance during a phase change, such as from a liquid to a gas or from a gas to a solid. Total heat is the sum of sensible heat and latent heat.
HVAC 中的 R 值和 U 值
R-value and U-value are two important concepts in HVAC. R-value is a measure of a material’s resistance to heat flow, while U-value is a measure of its ability to transfer heat. The higher the R-value, the better the insulation, while the lower the U-value, the better the insulation.
HVAC 中的水流量计算
Water flow rate is an important parameter in the design and operation of HVAC systems. It is important to calculate the correct water flow rate to ensure that the system operates efficiently and effectively.
风冷式冷水机组与水冷式冷水机组：选择标准
Compare air-cooled vs. water-cooled chillers. Understand selection criteria to make the best choice for your cooling needs.
了解区域供暖：可持续城市应用的高效能源分配系统 - HVAC-R 专业人员的技术概述、安装、维护和标准
Discover the benefits of district heating in HVAC systems: efficient energy distribution, reduced costs, and integration with renewable sources for sustainable urban development.
冷却/加热系统的设计程序
Design Procedures for Cooling/Heating Systems: A Comprehensive 9-Step Approach
仅冷却系统的设计程序：8 步方法
Designing efficient cooling-only HVAC systems requires a structured approach to ensure optimal performance and appropriate equipment sizing. The following 8-step procedure provides a comprehensive framework for designing these systems, where peak cooling loads determine the airflow requirements for system components.
标准与合规性
HVAC 管道设计：管道配件摩擦损失
使用开利标准的 HVAC 管道配件摩擦损失完整指南，涵盖损失系数、压降计算和高效空气分配设计的系统优化。
HVAC 管道设计：阻尼器、衰减器和线圈摩擦损失
使用 SMACNA 标准的 HVAC 阻尼器、衰减器和线圈摩擦损失完整指南，涵盖压降计算、组件选择和系统优化，以实现高效的空气分配设计。
HVAC 管道设计：圆形管道与矩形管道等效
使用 ASHRAE 标准的 HVAC 圆形管道与矩形管道等效的完整指南，涵盖转换公式、性能注意事项以及空间受限安装的系统优化。
HVAC 管道设计：管道摩擦损失
使用 ASHRAE 标准计算 HVAC 管道摩擦损失的完整指南，涵盖摩擦图表、压降分析和高效空气分配设计的系统优化。
HVAC 管道设计：管道压力分类
使用 SMACNA 标准进行 HVAC 管道压力分类的完整指南，涵盖安全高效管道系统的压力等级选择、施工要求和测试协议。
HVAC 管道设计：商业厨房管道尺寸
使用 ASHRAE 和 NFPA 标准确定商业厨房管道尺寸的完整指南，涵盖排气罩设计、油脂管理、消防安全和食品服务运营的新风系统。
HVAC Duct Design: Duct Sizing by Velocity & Noise Criteria (NC)
使用符合 ASHRAE 和 CIBSE 标准的速度和噪声标准确定 HVAC 管道尺寸的完整指南，涵盖敏感应用的声学设计、速度限制和噪声控制。
HVAC 管道设计：通过等摩擦法确定管道尺寸
使用符合 SMACNA 和 ASHRAE 标准的等摩擦法确定 HVAC 管道尺寸的完整指南，涵盖计算程序、摩擦率选择和有效空气分配设计的系统优化。
HVAC 管道设计：管道尺寸 SMACNA 建议
使用 SMACNA 建议确定 HVAC 管道尺寸的完整指南，涵盖等摩擦、速度和静态回弹方法，以及有效空气分配的设计计算和系统优化。
数字工具和资源
HVAC-R Load Calculator: Your Essential Tool for Accurate System Sizing
Our new web-based calculator combines sophisticated engineering principles with an intuitive interface, making accurate load calculations accessible to everyone from students to seasoned professionals. Unlike basic square-footage estimators, our tool considers the multitude of factors that influence heating and cooling requirements.
Interactive Psychrometric Chart
The aim of this web app is to create an interactive psychrometric chart on which you can project a range of comfort metrics as well as mapping weather data or room air conditions calculated using EnergyPlus. You can add or remove lines for a range of different metrics or highlight them individually to assist with dynamic explanations or presentations.
HVAC-R Financing Made Simple: Introducing Our Smart Equipment Calculator
we’ve developed a comprehensive HVAC-R Equipment Financing Calculator that goes beyond basic loan calculations to include industry-specific considerations like energy savings, equipment efficiency, and available tax incentives
Download Weather Design Conditions (ASHRAE)
Discover ASHRAE Handbook weather stations with our comprehensive search tool. Optimize HVAC and equipment design, sizing, distribution, and installation for residential, commercial, and industrial applications. Enhance your energy-related projects across various sectors, including agriculture, by leveraging accurate climatic data.