基礎とエンジニアリング
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HVAC ダクト設計: ダクト継手の摩擦損失
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ダクト設計：ダクトラウンドから長方形の同等物
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ダクト設計：ダクト摩擦損失
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ダクト設計：ダクト圧力分類
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ダクト設計：速度とノイズ基準（NC）によるダクトサイジング
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ダクト設計：等しい摩擦法によるダクトサイジング
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ダクト設計：ダクトサイジングSmacnaの推奨
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 換気設計: 階段加圧 + リリーフベントのサイジング
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 換気設計: タバコ/喫煙エリアの換気率
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 換気設計: レートおよび ACH による排気換気
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
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Expansion Tank Sizing Calculator
Size bladder, diaphragm, or plain-steel expansion tanks for closed hydronic systems in seconds. This calculator applies thermal-expansion and pressure-ratio principles from Steven T. Taylor’s ASHRAE-referenced sizing method and the ASME Boiler and Pressure Vessel Code, Section VI, to compute the minimum required tank acceptance volume for hot water, chilled water, and mixed-temperature systems. Supports US and SI units, all four major tank styles, an optional piping-expansion credit, and a built-in ASME/UMC/IMC cross-check for 170–230°F systems — with clear pass/warning/invalid status and next-step guidance for tank selection and precharge verification.
Critical Radius of Insulation Calculator
Determines the critical radius (and critical thickness) of insulation for a cylinder or sphere — the outer radius at which heat loss is maximum — and compares heat‑loss rates before and after insulation.
HVAC機器寿命計算機
プロのHVAC機器の寿命計算機を作成しました。このアプリケーションは、さまざまなHVAC機器タイプの残りの耐用年数を決定するための包括的な計算を提供します。
最新のHVACアプリケーション向けのBIMソフトウェアソリューション
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ソフトウェアのダウンロード
Explore a comprehensive guide on locating and downloading McQuay software tools to streamline your HVAC system design and selection processes.
ベル＆ゴセットセレクションソフトウェア
Streamline your HVAC system design process by exploring the advanced capabilities and features of Bell & Gossett selection softwares.
ダイキン Revit ファイル
Access and download Daikin Revit files to seamlessly integrate accurate 3D BIM models into your HVAC design and engineering workflows.
Cooltools ソフトウェアのダウンロード
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.