EXPERIMENTAL AND NUMERICAL INVESTIGATION OF

AIRFLOW WITHIN TURBINE VENTILATOR-EXHAUST

HOOD NOZZLE TYPE

By :Abel RASAMIMANANA

NRP:210 9202 702

Supervised by:

Prof.Dr.Ir.Triyogi Yuwono, DEA

Dr.Ir. Wawan. ST.MT

(Energy Conversion)

Department of Mechanical Engineering

Institute Technology Sepuluh Nopember

( Case Study For β = 18°, 9°, 6°

)

BACKGROUND

Impact of fossil

in environment is

problem also in

word

Evolution of fluid

dynamic has

increased to solve this

problem

Wind technologies

Increase the price

of energy is

particularly

problematic in the

word

Turbo-vent-exhaust hood

Introduction of turbine ventilator

The turbo-vent is a wind driven ventilator that is installed on the

roof top to provide effective ventilation for all kind of industries

Role:

Bring the air contaminated from inside the

building and replacing stale air with fresh

and clean breeze

Applications:

Industrial;

School, building;

Factories, warehouses, workshops….

Advantages

Doesn't require power or electricity

No Operating Cost

Totally Economical, environment & Eco –

Friendly

Introduction of Duct

The duct is the pipe system connecting hood smoke stack through other system

components

Application:

Fan;

Motor for aircraft….

Role:

transport polluted air;

transfer of air between spaces in a structure.

Role:

System to capture pollutants and/or

excessive heat

Introduction of hood

Application:

Industrial;

kitchen , Chemical laboratories ….

Partial extraction is used frequently in industrial processes to

reduce the concentration of toxic particles and/or toxic gases to an

acceptable level

turbine

Assembly Turbine ventilator - Exhaust

hood

duct

hood

[1]Shane West (2005) Natural ventilation flow rate performance and

product development

Previous Works

Previous Works

[2] Naghman Khan (2008) Performance testing and comparison of

turbine ventilators

Previous Works

[3 ] Chi-ming Lai (2003) Experiments on the ventilation

efficiency of turbine ventilators used for building and factory

ventilation

D = 6’’, 14’’, 20’’

Problem Statement

What is the effect exhaust hood nozzle type

in performance turbine ventilator?

Can we create a consumable energy from

rotation of the turbo-vent?

What is the result analysis airflow from CFD

Objectives of Research

Find flow rate of the turbo-vent;

Measure the rotational speed of the turbo-vent;

Measure power of the turbo-vent;

Visualization airflow from CFD modeling;

Validate experimental from CFD modeling.

Methodology

Experiments

Measuring pressure across the duct;

Measure rotational speed of turbo-vent;

Measure power of turbo-vent by using small

generator.

Numerical

CFD Modeling (Fluent 6.3)

Experimental Setup for airflow forced

Turbine

Plenum

Hood

Duct

Experimental Setup for natural airflow

Detail Dimension of exhaust hood nozzle type

turbine

generator

hood

d

L

Lo

β h

D

Size Case I Case II Case III

L [cm] 58.76 71.80 84.84

h [cm] 13.72 26.42 39.35

β [deg] 18 9 6

d/D [cm] 45.72/54.2

Calibrate pressure transducer with manometer

P1

P2

Mano

P = ρg h

P = Po – Ps (Pa)

V

ρ

ΔP 2U

Research Procedure

Measure dynamic pressure across duct

P = f(P[mAh]) [Pa]

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