Suez University
Faculty of Technology and Education
Program of Renewable Energy






Mahmoud Ahmed Abdullah Eid
Ziyad Ahmed Ahmed Abdo Ghazal
Kareem Amr Elshbrawi Ali
Hala Mohammed Fawzi
Nawal Amged Ali
Menna alla Abdllh shalaby
Dr. Nader M. A. Ibrahim
Contents :
1- What is thermal energy

2-Component.

3- Block diagram

4-How OTEC works

5-Advantages & Disadvantages

6-Atlas OTEC for worled

7- Example

8-Watch a video
1-What is thermal energy?

Thermal energy is the energy that comes from the
temperature of matter. The hotter the substance, the
more is the vibration of molecules and hence the
higher is the thermal energy.
2-Component

1- Evaporator

2- Condencer

3- Turbine

4- Generator

5- pump
Block diagram
𝑠𝑡𝑒𝑎𝑚
𝐴𝑚𝑚𝑜𝑛𝑖𝑎 𝑁𝐻
Turbine
Generator
Electrical Energy
𝑠𝑡𝑒𝑎𝑚
Evaporator
Condenser
𝑀𝑖𝑥𝑒𝑑 𝑤𝑎𝑡𝑒𝑟 16℃
𝐿𝑖𝑞𝑢𝑖𝑑
pump
Cold 𝑤𝑎𝑡𝑒𝑟 5℃
pump
𝑤𝑎𝑟𝑚𝑒 𝑤𝑎𝑡𝑒𝑟 25℃
pump
Advantages of OTEC system

1.This plant can supply steady power without any fluctuation.

2. This plant needs very less no of equipment.

3. The plant can be constructed on the shoreline or on floating platform.

4. The plant of any size and capacity can be constructed at a suitable site.

5. Clean source of energy.
Disadvantages of OTEC system

1- Low efficiency

2- High installation cost

3- Maintenance hazards
𝑠𝑜𝑙𝑢𝑡𝑖𝑜𝑛
𝑃 = 8𝑀𝑊
𝑇 = 25 ℃
𝑇 = 5℃
𝑆. ℎ = 4200𝐽/kg-k
𝜌
P=
∴Q=
= 1026𝑘𝑔/𝑚
𝑄 = ??
𝑄=
∗
∗ . ∗∆
∗
∗ . ∗∆
8 ∗ 10 ∗ (25 + 273.15)
1026 ∗ 4200 ∗ 20
∴ Q = 1.4 𝑚
/s
𝐾 = ℃ + 273.15
ATLAS OF OTEC
Distribution of annual average temperature difference between 1000 m
deep water and surface water
Thank you