Engineering & Knowledge - HVAC-R & Solar Engineering Resource

Pump Construction (Part1)

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

What Is Corrosion?

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

Expansion Valves Selection

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

Water Tube Versus Fire Tube Boilers

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.

Capillary Tube Refrigeration

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

Refrigeration Formulas and Calculations

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.

Pipe Insulation Guideline

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

Refrigerant Piping – part2

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

以前

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 管道设计：阻尼器、衰减器和线圈摩擦损失

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 管道设计：圆形管道与矩形管道等效

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 管道设计：管道摩擦损失

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 管道设计：管道压力分类

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 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

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 Duct Design: Duct Sizing by Velocity & Noise Criteria (NC)

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 管道设计：通过等摩擦法确定管道尺寸

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 管道设计：管道尺寸 SMACNA 建议

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

数字工具和资源

Belimo SelectPro – 免费下载

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

常见管道材料的热膨胀率

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

工程与知识

基础与工程