for100

Question 1

Large hydro

Answer 1

100mw or more

Question 2

Medium hydro

Answer 2

20 mw to 100 mw

Question 3

small hydro

Answer 3

1 mw to 20 mw

Question 4

mini hydro

Answer 4

100 kw to 1 mw

Question 5

micro

Answer 5

5kw to 100 kw

Question 6

pico hydro

Answer 6

few hundred watts up to 5kw

Question 7

Run of river scheme/system?

Answer 7

Hydroelectric systems that harvest energy from flowing water to generate electricity IN THE ABSENCE of a large dam and reservoir - which is how they are different from the conventional hydroelectric facilities.

Question 8

What does the eqaution mgH^g and PE stand for?

Answer 8

1. Potential Energy (Joules)
2. Mass(Kg) Volume (m^3) * Density (Kg/m^3)
3. g= acceleration due to gravity.

Question 9

Head in Hydropower?

Answer 9

The vertical height measured between the hydro intake water level and water level at the point of discharge.

Question 10

Low Head hydropower?

Answer 10

Typically less than 20 meters, (these systems are classed as small -scale hydropower. Less than 5MW
(Much better for the environment)

Question 11

Large hydraulic Head?

Answer 11

(Traditional Hydropower) - Can occur naturally (waterfall) or by constructing a reservoir. Not as good for the environment.

Question 12

Low head schemes

Answer 12

Have to handle large quantities of water. (Equipment are large in size)

Question 13

What’s the function of a reservoir?

Answer 13

To store fresh water sources behind the dam and often used to control the flow of water into the Power houses.

Question 14

Pumped storage?

Answer 14

Water is pumped from lower reservoirs into higher “. Then the pumped water flows back down to generate electricity.

Question 15

Which continents installed the least to most capacity in pumped storage?

Answer 15

In the last 5 years Asia has installed the most capacity and the least installed goes to Africa.

Question 16

What’s is the total installed capacity in GW in 2020?

Answer 16

1330 Giggwatts

Question 17

Installed in Norway 2021

Answer 17

34 075 Megawatts

Question 18

How many % of all renewable is hydropower in Norway?

Answer 18

85% is hydropower in 2021,

Question 19

Interesting point!

Answer 19

Despite the % going down from 93% in 2012 to 85% in 2021. The production of hydropower has gone up.

Question 20

Hydropower turbines are divided into 2?

Answer 20

Reaction & Impulse turbines.

Question 21

What’s the difference between the reaction turbine and the impulse turbine?

Answer 21

Reaction turbines used with lower heads and higher flows, unlike impulse turbines that require higher heads and low flows.

Question 22

What are Gravity turbines?

Answer 22

Driven by the weight of the water entering the top of the turbine and falling into the bottom.