工程与知识

基础与工程

直接芯片液体冷却:高密度数据中心热管理的未来

数据中心的功率密度已飙升至每个机架 12-30 kW,因此液体冷却至关重要。了解单相和两相直接芯片系统的工作原理、制冷剂选择标准以及现代高密度数据中心中软管、管道和接头的关键设计注意事项。

风扇:第一道冷却线

风扇,就像冬天的风寒一样,流动的空气会迅速降低我们的皮肤温度,尤其是当包括汗液的蒸发时。即使使用空调的家庭也可以从使用风扇中受益。用风扇给我们的身体降温意味着我们可以调高空调的温度,从而整体节省能源。不同类型的风扇:便携式风扇、箱式或窗式风扇、吊扇、全屋风扇、阁楼风扇。 #粉丝 #Portablefans #盒子粉丝 #CeilingFans #WholeHouseFans #AtticFans #Destratification

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.

暖通空调职业机会

The HVAC/R (heating, ventilating, and air conditioning / refrigeration) industry is rapidly changing due to advancements in technology being spurred on by the need for increased energy efficiencies. Accordingly, the career opportunities open to an individual seeking employment in HVAC fields can be divided roughly into four categories, each dependent upon a different type or degree of education and/or training.

阀门特性

为什么我们需要了解阀门特性?液体循环加热系统中的每个组件都会对液体循环加热系统的控制和性能产生一定程度的影响。阀门很关键,因为它们是传热关键区域的控制装置。

谷轮制冷手册下载

这是一个由五个系列的出版物组成的艾默生气候技术公司制冷手册。尽管每个单独的部分都涵盖了制冷理论和实践的特定领域,但每个后续出版物都假定您对前面各节中介绍的材料有基本的了解。

主要暖通空调系统和设备

所有主要 HVAC 系统类型和相关设备的综合列表

冰蓄冷系统

Thermal energy storage (TES) involves adding heat (thermal) energy to a storage medium, and then removing it from that medium for use at some other time. This may involve storing thermal energy at high temperatures (heat storage) or at low temperatures (cool storage).

制冷剂管道要求

This guide focuses on systems that use Refrigerant-22 (R-22). While the general requirements are the same for systems that use other refrigerants, velocities and pressure drops will differ.

生命周期成本分析法

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.


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 Duct Design – Sizing Contaminant-Extraction Ducts (Smoke | Grease | Gases | Dry & Moist Dust)

ASHRAE’s Pocket Guide lists minimum conveying velocities that keep contaminants airborne while they travel through exhaust ductwork. Table 2.9 (2013 edition, Ch. 02, pp. 60

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

Belimo SelectPro – 免费下载

免费下载 SelectPro 桌面应用程序。使用导出构建器、报价生成器和集中参考文档来调整和选择阀门、执行器和传感器。适用于 HVAC 工程师和承包商。

常见管道材料的热膨胀率

使用我们的交互式计算器轻松计算常见管道材料的热膨胀率。获取金属和塑料的准确数据、设计见解和可操作的表格,这对于关注系统可靠性和能源效率的 HVAC 工程师、设计师和顾问至关重要。

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, and maintenance processes. For HVAC engineers, contractors, and technicians, selecting the right BIM software can significantly impact project efficiency and outcomes. Let’s explore the most effective BIM solutions for HVAC applications.

McQuay软件下载

McQuay (As part of Daikin Industries) is one of the largest air conditioning, heating, ventilating and refrigeration companies in the HVAC/R industry. Therefore, we decided to make some softwares that this company has introduced to the industry based on their experience and knowledge available for download.

暖通空调职业机会

The HVAC/R (heating, ventilating, and air conditioning / refrigeration) industry is rapidly changing due to advancements in technology being spurred on by the need for increased energy efficiencies. Accordingly, the career opportunities open to an individual seeking employment in HVAC fields can be divided roughly into four categories, each dependent upon a different type or degree of education and/or training.

Bell & Gossett 选择软件

#Xylem Bell & Gosset #Selection、#Sizing & #CAD 工具和 #Softwares

管道时间表表

Pipe Schedule (SCH) is a standard that measures the nominal wall thickness of a pipe. The pipe schedule number is non-dimensional and depends on the nominal pipe size, internal pipe working pressure, and the material used for the pipe wall.

Piping Tools (Excel Files)

More than 165 spreadsheets (excel xls files) for a comprehensive range of calculation in Fluid, Thermal and piping engineering.

大金 Revit 文件

大金应用资源库 – REVIT 文件 屋顶系统 空气处理器 – 室外风冷式冷水机 水冷式冷水机 风机盘管 自给式水源热泵机组 通风机