基礎とエンジニアリング
パイプ圧力降下計算：必須式とガイドライン
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 設計のベスト プラクティス
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.
Sensible, Latent, and Total Heat
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.
R-Value and U-Value in HVAC
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 における水流量の計算
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.
空冷チラーと水冷チラー: 選択基準
Compare air-cooled vs. water-cooled chillers. Understand selection criteria to make the best choice for your cooling needs.
地区の暖房の理解：持続可能な都市アプリケーションのための効率的なエネルギー分布システム - HVAC-Rの専門家の技術的概要、設置、メンテナンス、および標準
HVACシステムにおける地区暖房の利点を発見する：効率的なエネルギー分布、コストの削減、および持続可能な都市開発のための再生可能源との統合。
冷却/加熱システムの設計手順
Design Procedures for Cooling/Heating Systems: A Comprehensive 9-Step Approach
冷却専用システムの設計手順: 8 ステップの方法論
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.
標準とコンプライアンス
HVAC 換気設計: リフト/エレベーターの加圧
Complete guide to HVAC lift/elevator pressurization design using BS 5588-4 standards covering pressure control, airflow calculations, and elevator system integration for effective emergency vertical transportation protection.
HVAC 換気設計: 階段加圧 + リリーフベントのサイジング
Complete guide to HVAC staircase pressurization and relief vent sizing design using ASHRAE and BS standards covering pressure control, airflow calculations, and relief system integration for effective emergency egress protection.
HVAC換気設計: 廊下/エレベーターロビー/アトリウムメイクアップ/加圧
Complete guide to HVAC corridor, lift lobby, and atrium make-up air and pressurization design using CIBSE and ASHRAE standards covering pressure control, airflow calculations, and fire safety integration for effective emergency protection.
HVAC 換気設計: アトリウム煙抽出物
Complete guide to HVAC atrium smoke extraction design using CIBSE and ASHRAE standards covering smoke layer management, extraction calculations, and advanced fire safety integration for large-volume space protection.
HVAC 換気設計: 廊下/エレベーター ロビーの煙抽出
Complete guide to HVAC corridor and lift lobby smoke extraction design using CIBSE fire engineering standards covering smoke removal, pressure management, and life safety system integration for effective emergency ventilation.
HVAC 換気設計: 駐車場 CO システム
Complete guide to HVAC car parking CO detection systems using NFPA 720 standards covering carbon monoxide monitoring, alarm systems, ventilation integration, and safety protocols for parking facility protection.
HVAC 換気設計: 速度別の駐車場メイクアップ換気率
Complete guide to HVAC car parking make-up ventilation design using ASHRAE velocity-based methods covering air movement calculations, system integration, and performance optimization for effective parking facility ventilation.
HVAC 換気設計: 駐車場の換気率を抜粋
Complete guide to HVAC car parking extract ventilation design using CIBSE and BS standards covering CO control, air change rates, and specialized applications for safe and efficient parking facility ventilation systems.
HVAC Ventilation Design: Commercial Kitchen Ventilation Rates (Hood/Canopy, Ceiling Extract/Makeup)
Complete guide to HVAC commercial kitchen ventilation design using ASHRAE, CIBSE, and VA standards covering hood exhaust rates, makeup air requirements, and specialized applications for effective contaminant control and energy efficiency.
HVAC 換気設計: タバコ/喫煙エリアの換気率
Complete guide to HVAC smoking area ventilation design using CIBSE standards covering high-performance ventilation rates, specialized system requirements, and health protection strategies for tobacco use areas.
デジタルツールとリソース
Cooltools ソフトウェアのダウンロード
- サイクル分析（プロセス設計） - 1つの段階の直接拡張サイクルと1つのステージの浸水サイクルの比較。 - システムサイジング - 一般的な基準からのコンポーネントサイズの計算。 - システムシミュレーション - 既知のコンポーネントを持つシステムの動作条件の計算。コンポーネントの計算 - 計算 - コンポーネントの効率と出口条件。 - 動作の評価 - システム効率の評価。 - プロセス調査 - 湿った空気計算など。
冷媒のpH図（パート2）
This article is a continuation of our older article, which was well received by users, so we decided to update the P-H Diagram list and provide you with a more complete list of the world’s commercial refrigerants. You can easily access the high quality refrigerant chart by clicking on the refrigerants listed in the table.
キャリア Plv プロのダウンロード
Carrier’s PLV Pro is a software tool that empowers consulting engineers to make objective and informed decisions about their chiller plant design that go beyond Full Load and IPLV metrics. Results are provided in a professional report or .csv format for further analysis. The tool is for professionals who need a quick and free-of-charge alternative to detailed energy modeling analyses.
クールセレクターのダウンロード
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.
エアコン凝縮液計算機
空調凝縮液は、空調システムでの冷却プロセスの結果として生成される水です。エアコンシステムが建物内の空気を冷却すると、空気から水分が除去され、エアコンシステムの冷たいコイルに凝縮します。この凝縮は収集され、凝縮液ドレンパイプから排出されます。凝縮液の排水に採取される水は、通常、エアコン凝縮液と呼ばれます。
パイプ圧力降下計算：必須式とガイドライン
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.
マッキーダクトサイザー ダウンロード
The McQuay Duct Sizer is a specialized software tool designed for HVAC professionals to assist in the accurate and efficient sizing of air ducts. This tool is essential for ensuring optimal performance and energy efficiency in HVAC systems. The McQuay Duct Sizer is available for free download.
HVAC システムにおけるスペースおよびゾーンのエアフロー サイズの計算
Following our previous discussion on the systematic 9-step procedure for designing cooling and heating systems, it’s essential to understand the technical aspects of airflow sizing
HVAC-CX：The Essential Building HVAC Systems Commissioning Toolをダウンロードします
As buildings continue to evolve toward higher efficiency and more sophisticated control strategies, tools like HVAC-Cx become increasingly valuable. The software’s ability to systematically detect faults, prioritize issues, and assist with active commissioning represents a significant advancement in building operations technology.