ENERGY RESOURCES. FELIX RIZK. ENERGY is the capacity to do WORK. LAW OF CONSERVATION OF ENERGY. In a closed system, energy is not created or destroyed, but simply changed from one kind of energy to another kind.
High Level Radioactive Waste (EE). – most dangerous form of nuclear waste:
Radioactive substances with high doses of radiation over short time intervals; or
Radioactive waste with low doses of radiation over long intervals of time.
In the US no official policy on disposal. Yucca Mtn. Approved in 2003.
Low Level Radioactive wastes. These are:
Radioactive substances producing small doses of radiation over short time intervals (decades).Radioactive Waste Disposal – a major drawback to nuclear energy.
Large quantity of energy produced.
Long life span (>100 years).
Used for flood control/irrigation.
No greenhouse gas emissions/acid rain.
Reservoir can be used for recreation.
Destroys large tracts of natural habitats.
Initial biomass decays produces greenhouse gases.
Decreases fish harvest/migration, and silt/sediment supply downstream.
Large amounts of consumed water in hot climates.
Provides habitat for water-borne diseases.Hydropower is indirect solar energy plus gravitational energy.
Easy to expand.
Can last 20-40 years.
Work on cloudy days.
No greenhouse gas
Low land use, if on roofs.
Need access to Sun.
Low energy efficiency.
Need battery storage systems.
DC must be converted to AC.
Large scale use needs extensive land areas.Producing Electricity by Active Solar Energy Technology