Potential of RE Sources

Question 1

Definitions of Potential

Answer 1

1. Potential of solar radiation is much greater than other
   potentials of primary energy carrier
2. Annual primary energy demand/consumption is comparatively small

Question 2

Definitions of Potential what is McKelvey Diagram)\?

Answer 2

A McKelvey diagram or McKelvey box is a diagram that helps to explore the distinction between resources and reserves and the differences that can exist within these two broad categories. The amount of any mineral on the Earth can be explained and described in terms of their resources and reserves, thus it is important to understand what both mean in order to understand how much of this material is accessible and usable.

Question 3

1. Production
2. Reserve
3. Resource
4. Static range
5. Dynamic range
6. Variable cost

Answer 3

1. Production: Amount to cover the annual
   demand (Production increases by higher
   demand)
2. Reserve: Secured exploitation with
   conventional technology and current
   market price (Reserve can be increased by
   technology leaps and higher market prices)
3. Resource: Total amount, which can be
   exploited at higher market prices (Increase
   by new exploration)
4. Static range: R/P-ratio
5. Dynamic range: To take changes and dynamics into account, production and reserves are adapted by means of expected change rates. E.g. constant increase in demand.
6. Variable costs result in additional effects.

Question 4

4 Definitions of Potential

Answer 4

1. Accessible potential: Actual and expectable share (Consideration of e.g. lack of acceptance)
2. Economic potential: Consideration of economic boundary conditions
3. Technical potential: Fraction of the theoretical potential with the consideration of ecologic and other constraints
4. Theoretical potential = Resource: Total available substance (e.g. total biomass)