A CASE STUDY ON CERAMIC INDUSTRY OF BANGLADESH.pptx
oteccommonseminarb.pdf
1.
2. Introduction
The ocean cover 70% of the earth surface means ocean is
the world largest solar energy collector & energy stored
system.
So, it possible to generate electricity from the oceanic
thermal energy?
3. (Ocean thermal energy conversion)
Jacques Arsene d’Arsonval (1881)
Energy convert –ocean solar radiation to electric power
Renewable energy(clean & green power)
Hydro energy thermal conversion system
Use temp. differences
What is OTEC..???
4. How does it work..???
Fuel of OTEC..
25-4 degree c (20 degree c differences)
Used to drive steam cycle that turn to turbine
Part of OTEC
Require large volume
Ex-100MW
20,000,000 gallon water
Pump use 30% electricity
5. Type of OTEC-
1) Closed Cycle OTEC
2) Open Cycle OTEC
3) Hybrid Cycle OTEC
6. 1) Closed Cycle OTEC
Warm & cold water
Ammonia as working
fluid
Generate electricity not
fresh water
7. 2) Open Cycle OTEC
Seawater is working fluid
Vacuum
0.3 psia –22 degree c
(boiling point of water)
Boiling water drive to turbine
Give Production of electricity
& fresh water
16. 1) Electricity
Able to provide continuously electricity
Energy losses 20%-30%
100MW -33,000,000 cubic mt per yr
2) Fresh water
17. 3) Mari-culture (fish production)
SWAC require 1 cold pipe to reduce temp.
Resort, Hotels, Hospitals, malls….
Reduce electricity uses
80%-90% (AC)
Concentration of minerals, nutrients
Artificial pond
Very large profit
4) SWAC (Sea Water Air condition)
18.
19.
20. OTEC Plant in World
Installed-
Hawaii 1 MW -OTEC International and NELHA
Japan/Nauru 120 kW- Japan Institute for Ocean Energy Research
South Korea 20 kW- Installed in 2013. KISOT
Japan/Okinawa 50 kW- XenesysIncorporated, IHI,and Yokogawa
Developing Stage-
Hawaii 10 MW- Lockheed Martin Naval Facility Engineering Command
Southern China 10 MW- Lockheed Martin, Reign wood Group
(India-Tuticorin 1 MW -Ammonia-based closed cycle, started in 2000, but not
completed due to problems with the pipes for pumping the seawater;floating
plant.(IIT))
21. Advantages
Use clean, renewable, natural resource
“0” Carbon emission (sometime little)
Produce electricity as well as fresh water
Reduce dependency on fossil fuel (1.3million barrel p/ye)
Produce 120,000,000 litter fresh water p/day(100MW)
Mariculture -70 tons of shellfish meat grow each
day(100MW)
(Johnson 2013)
22. Disadvantages/Limitations
OTEC produced electricity at present some time cost more
than electricity
OTEC plant not working further 40 degree latitude
The pipe used in OTEC nearly up to 10 mt diameter, there is
animal are sucked into the OTEC system.
Risk of the leakage of Ammonia
Cold water discharge on surface water it dangerous for
marine life ex- Coral reefs
OTEC –Experimental Stage
23. Ocean Thermal Energy Conversion (OTEC) is a technology solution
that directly addresses the key concerns of energy security, global
warming, pollution and depletion of nonrenewable fossil resources.
OTEC provides a clean, reliable energy solution for many areas of the
world.