experimental and numerical investigation...
TRANSCRIPT
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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