opening remarks - oryx chapter · 2016. 12. 11. · •put this language in your office and project...

• Opening Remarks

Fady Abu Jamra, President of ASHRAE Qatar Oryx Chapter

Mark Stevens, Executive Director, AMCA International

Welcome!

• Maico Gulf Diamond Sponsor

• Hira Walraven Emerald Sponsors

• Ruskin Titus Gulf Sapphire Sponsor

• Aero Foam Ruby Sponsor

• Hammam Industries & Co. Gold Sponsor

• Multi-Wing Booklet Sponsor

Thank you, sponsors!

• Air Movement and Control Association International

• Not-for-profit manufacturers association first established in 1917

• More than 360 member companies worldwide

• Mission is to promote the health, growth and integrity of the

industry

An Overview of AMCA

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An Overview of AMCA

5

27

6

23

165129

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AMCA Scope of Products

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Air curtains

Air handlers

Energy recovery ventilators (ERVs)

Evaporative coolers

Fans for residential, commercial, and fire/smoke control

Fans for industrial processes and power-plant applications

Heat recovery ventilators (non-residential)

Fire and smoke dampers

Fixed and adjustable louvers

Gravity roof ventilators

Heavy duty dampers

Range hoods (non-residential)

Spiral duct

AND MORE…

AMCA’s member products are used in

Commercial ventilation systems

Industrial facilities and processes

Data centers and high-tech facilities

Power plants

Gas, oil, mining and other heavy industries

Food processing

Waste water treatment

… and more

Applications of AMCA Products

7

AMCA Serves Through Programs

• Certified Ratings Program

• Laboratory Testing for Product Rating

• Laboratory Accreditation (worldwide)

• Rating-Test Standards

• Library of Application Guides, White Papers, and more

• Engineering Seminars

• Engineering Conferences

• Helps ensure honest and accuracy in product ratings

• Ratings based on data from approved test standards

• Ratings presented based on approved data

interpretations and formatting

• Enables easy and accurate comparison of products

from different manufacturers

• You’ll hear about the sand louver certification from

Saad Ali later

The AMCA Certified Ratings Program

9

• www.amca.org/

certified

How to find…

http://www.amca.org/certified

• Put this language in your office and project specifications:

• (Product) shall be licensed to bear the AMCA Certified Ratings

Program seal for (license type/s) in accordance with AMCA

Publication (Number). The (Product) shall be tested according to

(reference standard).

• AMCA White Paper Library has three publications on AMCA

Certified Ratings Program that helps you fill in the red text.

How to Specify…

• Materials from the Hira Walraven

• AMCA white paper library

• AMCA publications for the Certified Ratings Program

• 10 Years of AMCA inmotion magazine

• AMCA brochures

• Please feel free to store on company libraries

What’s on the USB Drive?

For more information about AMCA, visit:

1. www.amca.org

2. www.amca.org/store

Whitepapers and CRP publications are free

3. www.amca.org/certified

Search for certified product worldwide

4. www.amca.org/whitepapers

13

Resources

http://www.amca.org/

http://www.amca.org/store

http://www.amca.org/certified

http://www.amca.org/whitepapers

• System Design for Tunnel-Smoke Exhaust

Roberto Arias, Metro Doha Project Director, Zitrón S.A

• Avoiding Fan System Effect

Mark Stevens, Executive Director, AMCA International

• 10:30 – 11:00 Break and Sponsor Expo

• Introducing the Fan Energy Index

Michael Ivanovich, Senior Director, Industry Relations AMCA International

• Sizing & Selection of Sand Louvers

Saad Ali, Group General Manager – Middle East/North Africa, Ruskin Titus Gulf

• Car Park Ventilation Design as Per QCDD

Arun Thakur, CFD Analyst, Maico Gulf

• 13:00 – 14:00 Networking Luncheon

Agenda

©2016 Air Movement and Control Association. All Rights Reserved.

Roberto Arias

ZITRON Metro Doha Project Director ZITRON, [email protected]

FANS FOR FIRE TUNNEL VENTILATION

• Learn about the types of fans used for smoke tunnel ventilation

• Aerodynamic and mechanical design of a fan for tunnel-fire ventilation

• Temperature certification process for this type of fan

• Correct installation tunnel fans

Learning Objectives



TYPE OF FANS USED IN FIRE TUNNEL VENTILATION

TYPES OF FANS USED IN FIRE TUNNEL VENTILATION

TYPE OF FANS USED IN FIRE TUNNEL VENTILATION

• JET FANS

• AXIAL FANS IN VENTILATION ROOMS




•Jet fans: Generate air movement in the tunnel,

ensuring a minimum speed throughout the entire section

•Axial fans: Ensure a minimum extraction flow

overcoming the load losses of the circuit


TYPE OF FANS USED IN FIRE TUNNEL

VENTILATION

JET FANS



• In the first case, they control the fumes and extract them

by a portal



JET FANS

They are used in longitudinal ventilation, and in somecases, as support for the semi-transversal or transversal ventilation

• In the second case, they help axial fans of the semi-

transversal or transversal ventilation to guide the smoke

Backlayering

Insufficient ventilation

Adequate ventilation

No

Backlayering


JET FANS


SMOKE CONTROL


JET FANS


“CRITICAL VELOCITY”

Vc : Critical velocity

g : Gravity

H : Height of tunnel section

Qa : Fire power

A : Tunnel section area

Cp : Specific air heat

ρ0 : Air fresh density

To : Ambient temperature

Smoke temperature

Froude Number

Et = PTS

Et : Necessary thrust in the tunnel (N)

S : Tunnel section (m2)

Pt : Total pressure loss in the tunnel (Pa)

x

MINIMUM AMOUNT REQUIRED IN CASE OF FIRE


JET FANS


TOTAL PRESSURE LOSS IN THE TUNNEL

PT = Pf

Pf : Friction losses

Ps : Portal losses

Pb Pw

Pw: Wind losses

Pveh

Pch : Chimney effect

Pch+ + + +


Pveh : Vehicle/Train losses


JET FANS


• Friction losses (Pa)

Pf =L ρ vc

2

Dh2

Dh = 4S/P

Pf : Friction losses

L : Tunnel length (m)

Vc : Critical velocity (m/s)

Dh : Hydraulic tunnel diameter (m)

ρ : Air density (Kg/m3)

lλ : Coefficient of friction

S : Tunnel section

P : Tunnel perimeter



JET FANS


• Portal losses (Pa)

PS : Portal losses

ρ : Air density (Kg./m3)

Vc : Critical velocity (m/s)



JET FANS


Ps =ρ vc

2

2

• Wind losses (Pa)

Pw =cos2 αρex vv

2Pw: Wind losses

Vv : Wind velocity (m/s)

cosα : Angle of incidence of the wind

ρex : External air density (Kg/m3)



JET FANS

2




JET FANS


• Vehicle/Train losses (Pa)

Pveh =( V-Vc )

2

2

Pveh : Vehicle/Train losses N : Number of vehicles in the tunnel

ρ : Air density (Kg./m3)

ρNS

Cw Sv

Cw : Aerodynamin coefficient

Sv : Vehicle section V : Vehicle/Train velocity (m/s)

Vc : Critical velocity (m/s)S : Tunnel section

• Chimney effect (Pa)

Pch = (ρex1 – ρex2)Dc9.81

Pch : Chimney effect

ρex2 : External air density 2 (Kg/m3)

Dc : Difference in height between portals (m)

ρex1 : External air density 1 (Kg/m3)



JET FANS


F1 = Critical velocity

Velocity fan discharge1 -

N vent =Needed thrust in the tunnel

Jet fan thrust F1x



JET FANS


F2

= 0.7 fan in a corner

= 0.8 fan ½ f roof tunnel

= 0.9 fan 1 f roof tunnel

Fan in a corner

1 f roof tunnel


Jet fan thrust F1 F2x x

½ F roof tunnel


JET FANS




Jet fan thrust F1 F2x x

Ejf = VVQ

Ejf : Individual jet fan thrust (N)

Q : Jet fan flow (m3/s)

VV : Velocity fan discharge (m/s)

x x ρ

ρ : Air density (Kg/m3)



JET FANS


Ejf = VVQ x x ρ

Jet fan working at

standard densityJet fan destroyed by fire Jet fan working at

low density



JET FANS


AXIAL FANS




AXIAL FANS


SEMI TRANSVERSAL

They are used for the ventilation:


AXIAL FANS


TRANSVERSAL

They are used for the ventilation:

Qh : Smoke flow

Qc:Section x Critical velocity

• Q = Qh + Qc + Qs

• Tunnel pressure losses

• Q ?? • Pt ??

Ptunel = Pf + Pb + Pw + Pveh + Pch

• Pressure losses in fan rooms and ducts

Prooms = Ducts + Fan ancillaries + Bends…..

Qs : Section x 1 m/s

WORKING POINT CALCULATION

AXIAL FANS




WORKING POINT CALCULATION

AXIAL FANS



FAN DESIGN

FAN DESIGN


• JET FAN

• AXIAL FAN

Technical

requirements

- Q (m³/s)

- Pt (Pa)

- Øfan (m)

- Øventilador (m)

- n (r.p.m)

- Ønucleo (m)

- Blade profile

- Guide vane profile

Technical

requirements

- E (N)

- Øfan (m)

- Øfan (m)

- n (r.p.m)

- Øhub (m)

- Blade profile

FAN DESIGN

FAN DESIGN


GUIDE VANES

BLADES

HUB

r=d/D

n rpm

FAN DESIGN

FAN DESIGN


AERODYNAMIC DESIGN

SIMULATION CFD STEPS:

Meshed of the Geometry

FAN DESIGN

FAN DESIGN



FAN DESIGN


AERODYNAMIC DESIGN



Calculation

FAN DESIGN

FAN DESIGN


FAN DESIGN

Calculation

Calculation

FAN DESIGN



AERODYNAMIC DESIGN



Calculation

Postprocess

FAN DESIGN

FAN DESIGN


FAN DESIGN

Postprocess


AERODYNAMIC DESIGN



Calculation

Postprocess

Optimization

FAN DESIGN

FAN DESIGN


FAN DESIGN

Optimization


FAN DESIGN

MECHANICAL DESIGN

FAN DESIGN


FAN DESIGN

MECHANICAL DESIGN

FAN DESIGN

MECHANICAL FEA STEPS:



FAN DESIGN



FAN DESIGN

MECHANICAL DESIGN

FAN DESIGN



Stresses and deformation of the blade


FAN DESIGN

Stresses and deformations of the blade


FAN DESIGN

MECHANICAL DESIGN

FAN DESIGN




Natural frequency of the blade



FAN DESIGN

1ª Natural

Frequency


FAN DESIGN


2ª Natural

Frequency


FAN DESIGN


3ª Natural

Frequency


FAN DESIGN

MECHANICAL DESIGN

FAN DESIGN





Other Mechanical Calculations


FAN DESIGN

Other mechanical calculations

opening remarks - oryx chapter · 2016. 12. 11. · •put this language in your office and project...

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