基础与工程
Pipe Insulation Guideline
Learn the essential standards and best practices for proper pipe insulation to maximize thermal efficiency and prevent condensation in engineering systems.
Refrigerant Piping – part2
Learn the critical steps and best practices for installing and maintaining refrigerant piping systems to ensure optimal HVAC performance and efficiency.
管道压降计算：基本方程和指南
Learn how to accurately calculate pipe pressure drops using essential equations and guidelines to ensure optimal fluid flow and system efficiency.
显热、潜热和总热
Master the core concepts of sensible, latent, and total heat to accurately analyze and design efficient HVAC systems.
HVAC 中的水流量计算
Learn how to accurately perform water flow rate calculations to ensure optimal efficiency and performance in HVAC systems.
制冷膨胀阀尺寸和选择过程
Proper expansion valve selection is critical for refrigeration system efficiency and reliability. This guide outlines the systematic approach to sizing and selecting expansion valves based
Refrigeration Evaporator Sizing and Selection
The evaporator is a critical component in any refrigeration system, serving as the heart of the cooling process. Proper sizing and selection of evaporators directly
Infiltration Rules Of Thumb
Learn the essential rules of thumb for calculating building infiltration to improve the accuracy of your HVAC load calculations and energy models.
标准与合规性
HVAC 管道设计：管道配件摩擦损失
Duct fittings friction loss represents critical HVAC design calculations that determine pressure drops through elbows, tees, transitions, and other directional changes within ductwork systems. Professional engineers utilize
HVAC 管道设计：圆形管道与矩形管道等效
Round to rectangular duct equivalency represents a fundamental HVAC design calculation that enables engineers to convert between circular and rectangular ductwork while maintaining equivalent airflow characteristics and
HVAC 管道设计：管道摩擦损失
Duct friction loss represents a fundamental HVAC design calculation that determines pressure drop through straight ductwork sections due to air friction against duct surfaces. Professional engineers utilize
HVAC 管道设计：管道压力分类
Duct pressure classification represents a fundamental HVAC design principle that establishes construction standards based on the operating static pressure within ductwork systems. Professional engineers utilize SMACNA pressure
HVAC Duct Design: Duct Sizing by Velocity & Noise Criteria (NC)
Duct sizing by velocity and noise criteria (NC) represents a fundamental HVAC design methodology that determines appropriate duct dimensions based on maximum acceptable air velocities and noise
HVAC 管道设计：通过等摩擦法确定管道尺寸
The Equal Friction Method represents a fundamental HVAC duct sizing approach that maintains constant pressure loss per unit length throughout the main duct runs, providing a systematic
HVAC 管道设计：管道尺寸 SMACNA 建议
SMACNA (Sheet Metal and Air Conditioning Contractors’ National Association) duct sizing recommendations represent fundamental HVAC design methodologies for calculating appropriate duct dimensions to deliver required airflow while
HVAC Ventilation Design: Staircase Pressurization + Relief Vent Sizing
Staircase pressurization and relief vent sizing represent critical life safety HVAC design requirements for maintaining protected egress routes during fire emergencies through systematic air pressurization and controlled
HVAC Ventilation Design: Tobacco/Smoking Area Ventilation Rates
Tobacco and smoking area ventilation represents specialized HVAC design requirements for controlling cigarette smoke, odors, and harmful contaminants to protect non-smoking occupants while accommodating designated smoking spaces.
HVAC 通风设计：按速率和 ACH 进行排气通风
Exhaust air ventilation requirements represent essential design parameters for maintaining indoor air quality by removing contaminated air, moisture, odors, and pollutants from building spaces. Professional standards provide
数字工具和资源
暖通空调设备预期寿命计算器
我们创建了专业的暖通空调设备预期寿命计算器。该应用程序提供了全面的计算，用于确定各种 HVAC 设备类型的剩余使用寿命。
适用于现代 HVAC 应用的 BIM 软件解决方案
As the HVAC industry continues to evolve in 2025, Building Information Modeling (BIM) has become an indispensable tool for professionals seeking to optimize design, installation,
McQuay软件下载
Explore a comprehensive guide on locating and downloading McQuay software tools to streamline your HVAC system design and selection processes.
Bell & Gossett 选择软件
Streamline your HVAC system design process by exploring the advanced capabilities and features of Bell & Gossett selection softwares.
大金 Revit 文件
Access and download Daikin Revit files to seamlessly integrate accurate 3D BIM models into your HVAC design and engineering workflows.
Cooltools软件下载
CoolTools is modern adaptation of CoolPack. CoolTools is a collection of simulation models for refrigeration systems and each of them has a specific purpose e.g. cycle analysis, sizing of main components, energy analysis and optimization.
Refrigerant Ph Diagram (Part 2)
Learn how to effectively read and utilize a refrigerant pressure-enthalpy (Ph) diagram to analyze and optimize HVAC system performance.
Coolselector Download
Coolselector®2 (from Danfoss company) helps to optimize energy consumption and increase efficiency in any HVACR system. Run unbiased calculations based on a set of operating conditions — such as cooling capacity, refrigerant, evaporation, and condensation temperature — and then select the best components for your design.
Air Conditioning Condensate calculator
Learn how to accurately determine HVAC drainage requirements with our easy-to-use Air Conditioning Condensate calculator.