Engineering & Knowledge - HVAC-R & Solar Engineering Resource

Pump Construction (Part1)

Learn the essential components and engineering principles behind pump construction in this foundational guide.

腐食とは？

Gain a foundational understanding of corrosion, its underlying chemical processes, and how it impacts engineering and materials.

膨張弁の選択

Learn how to select the right expansion valves to ensure optimal efficiency and performance in your refrigeration and HVAC systems.

水管と火管ボイラー

Learn the key differences between water tube and fire tube boilers to choose the right system for your industrial steam and heating needs.

Water Hammer (Part1)

Master the fundamentals of fluid mechanics by understanding the causes, effects, and prevention of the water hammer phenomenon in piping systems.

キャピラリーチューブ冷凍

Learn the fundamental principles and engineering behind capillary tube refrigeration systems to effectively optimize cooling performance and efficiency.

冷蔵式と計算

Master essential refrigeration formulas and calculations to solve fundamental engineering challenges efficiently.

The coefficient of velocity (Cv)

Learn what the coefficient of velocity (Cv) is and how it impacts fluid dynamics and engineering calculations.

パイプ断熱ガイドライン

Learn the essential standards and best practices for proper pipe insulation to maximize thermal efficiency and prevent condensation in engineering systems.

冷媒配管 – パート 2

Learn the critical steps and best practices for installing and maintaining refrigerant piping systems to ensure optimal HVAC performance and efficiency.

前

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：ダンパー、減衰器、コイル摩擦損失

Dampers, attenuators, and coils friction loss represents specialized HVAC design calculations that determine pressure drops through control devices, sound attenuation equipment, and heat transfer coils within ductwork

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 - 汚染物質抽出ダクトのサイジング（煙|グリース|ガス|乾燥＆湿ったほこり）

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ダクト設計：商業用キッチンダクトサイジング

Commercial kitchen duct sizing represents a specialized HVAC design discipline that addresses the unique requirements of grease-laden vapor removal, high-temperature exhaust, fire safety, and code compliance in

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

デジタルツールとリソース

Belimo SelectPro – 無料ダウンロード

SelectPro is a quick and simple tool for accurately sizing and selecting valves, actuators, sensors and replacement solutions for HVAC systems. Table of Contents Key

一般的なパイプ材料の熱膨張速度

In modern HVAC, energy, and process industries, pipe material selection is not just about cost or standard practices—it’s about anticipating expansion and contraction risks driven by a dynamic climate and extreme operational temperatures. Understanding the rates of thermal expansion for common pipe

エンジニアリングと知識

基礎とエンジニアリング