Geothermal and Tidal Energy Quiz

Geothermal and Tidal Energy: Overview, Applications, and Cost Estimation

• Geothermal energy is thermal energy within the earth's interior and is considered a renewable energy source.
• Geothermal resources are classified based on thermal and compositional characteristics, such as hydrothermal, geo-pressurized, magma, and enhanced heat recovery.
• The quality of a geothermal resource depends on its phase and temperature in the reservoir, with higher quality indicating higher work potential.
• Geothermal energy can be utilized for various applications, including electricity generation, space heating/cooling, cogeneration, and geothermal heat pumps.
• The USA generates the maximum geothermal electricity in the world, with over 3.5 gigawatts of electricity, which can supply energy to about 3.5 million homes.
• Geothermal heating can significantly reduce annual costs for common heating purposes, by more than 60%.
• The degree-day method is the simplest and most intuitive method to estimate the annual energy consumption of a building for heating purposes.
• Tidal energy is practically inexhaustible and is classified as a renewable energy resource, with only about 20 locations having good inlets and a large enough tidal range to produce energy economically.
• The largest daily tidal ranges in the world range between 23-38 meters.
• Tidal power plants are constructed in tidal areas, with turbines connected to generators that produce electricity during incoming high tides and outflowing water during low tides.
• There are different types of tidal power plants, including single-basin one-way cycle, single-basin two-way cycle, single-basin two-way cycle with pump storage, double basin natural flow, and double basin with pumping system.
• Tidal energy has not yet been operational in Pakistan, but two sites in Sindh are available to exploit tidal energy, with tidal heights of two to five meters at the Korangi Creek.