Lecture 15 Flashcards
Renewable solar power can be _____ or _____
Direct or indirect
Direct renewable solar power can be broken down into 3 categories. what are they?
a) Passive
b) Active
c) Photovoltaic
Indirect renewable solar power can be broken down into 3 categories. what are they?
a) Wind
b) Hydro
c) Biomass
What are four pros of using solar power
a) Free power
b) no pollution
c) Free to operate once built
d) The devices will produce more energy over their lifetimes than is needed to make them
What are 3 cons of using solar power/panels
a) More expensive per wattage then coal
b) During night and winter they produce slim to no power
c) Back ups are required
What are 3 reasons solar panels don’t work during night and winter?
a) Not built for weather under 0
b) Become snow covered
c) Not enough quality sun light
Describe Renewable direct passive solar power and give an example
Taking in sunlight to create energy with no machines
ex; sunspace or solar greenhouses
True or false; Renewable direct active can be scaled up into power systems if so, where are the biggest ones located
True
Spain and California
Describe renewable direct active solar power
Uses machines to track/move/distribute energy
What is one pro of using renewable direct active solar power
Low to no CO2 produced
What are 2 cons of using renewable direct active solar power
a) Need intense sunlight
b) Not a Canadian solution
Who developed the notion of photovoltaic ?
Albert Einstein
Describe renewable direct photovoltaic solar power
Machines that directly change sunlight to electricity
What percentage of efficiency do solar powers using photovoltaic need to reach to become a wide scale producer of energy
50-60%
At the current efficiency levels of photovoltaic panels, what are they good for powering
calculators and watches
