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。

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

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。

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

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.

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