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What are the methods that are used for duct design?

specify the methods used for duct design

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تم إضافة السؤال من قبل Mohamed Yassin , مهندس تصميم لانظمة اطفاء الحريق , شركة الرحمة
تاريخ النشر: 2013/07/24
Sherif Mohammed Ibrahim
من قبل Sherif Mohammed Ibrahim , Senior Mechanical Technical engineer , Al-Latifia Trading & Contracting Company

Equal friction method

- Velocity reduction method

- Velocity regain method

Muhammad Arsalan Siddiqui
من قبل Muhammad Arsalan Siddiqui , Associate Director (MEP) , JLL

Equal Friction Method Velocity Method Pressure method

Mohammad shad
من قبل Mohammad shad , Principal Mechanical Engineer , Jacobs

There are3 methods of duct Designing as under:1.
Equal friction method2.
Velocity reduction method3.
Velocity regain method

هبة الله ادريس محمد سكر الخباني
من قبل هبة الله ادريس محمد سكر الخباني , snior of hvac & Plumbing desin , استشارات الكتروميكانيك

Equal Friction method

Jayakrishnan V G
من قبل Jayakrishnan V G , Project Engineer , Future World Electromechanical LLC

Equal friction method - Where a constatnt "Head Loss in inches of wg per100 ft" is taken and duct sizes are taken considering this constant loss throughout the ducting. Most commonly used method because of easier calculation.

Velocity Reduction Method : Here duct sizing is done by varying the velocity in the main and bracnch ducts.

Static regain method : Here the total frictional drop and fitting pressure drop is calculated for the ducts, and the line with the biggest pressure drop is taken. This method is the most accurate but take lots of time for calculation.

abdo alkhuder
من قبل abdo alkhuder , Project coordinator- mechanical engineer , EMTECH ELECTRO-MECHANICAL TECHNOLOGY CO.sarl

1-Equal friction method.

2-Velocity Reduction method.

3- Static regain method. Most popular one is the equal friction method normally used in low pressure duct sizing.

THERE IS READY RULER TO DO THAT.

Ahmad Imran
من قبل Ahmad Imran , Senior Mechanical Engineer , Saudi Arabian Baytur


1- equal friction
2- static regain

Prabhakar Naik
من قبل Prabhakar Naik , Engineering Manager , VASTU & ENGG CONSULTANCY DMCC, JLT

Equal friction method, Velocity Reduction method and Static regain method.
Most popular one is the equal friction method normally used in low pressure duct sizing.

Rafeek Rahim
من قبل Rafeek Rahim , Production & Maintenance Engineer , SASCO Air Conditioning Industry

There are basically three types of duct design, they are1)equal friction method2)velocity reduction method  3)static regain method.
 The first one is the widely used and simplest one.

Mujahid Ahmed Mohammed
من قبل Mujahid Ahmed Mohammed , Site Engineer , Aikah Establishments

WE HAVE2 METHODS FOR CALCULATION1) EQUAL FRICTION &2)EQUAL VELOCITY.
IN THIS THE POPULAR METHOD USED IS EQUAL FRICTION FOR LOW PRESSURE DUCTS.

ibrahim medany
من قبل ibrahim medany , HVAC TEAM LEADER & MEP COORINATOR , RAKA DESIGN GROUP ENGINEERING CO.

constant velocity or pressure

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