WHAT IS A GEOTHERMAL RESOURCE?
Before talking about the pros and cons of geothermal heating.
Geothermal resources are warm-water reservoirs that exist under the surface of the Earth at different temperatures and depths. A mile or deeper wells can be drilled into underground reservoirs to pump steam and extremely warm water, which can be put on the surface for use in a range of applications, As well as for power generation, specific use, ventilation, and air conditioning. Many geothermal reservoirs are in the Western States in the United States.
Geothermal energy functions to eliminate the Earth’s constant core temperature from both heat and cooling the house instead of using natural gas and oil and as an alternative for high electricity bills. At first, it would seem that incorporating geothermal energy into a home or business is no brainer and, while costs and economic benefits are a part of the process.
mile-deep wells are being drilled into underground reservoirs to generate power from geothermal energy, and control the steam and hot water used to power turbines that are connected to electricity generators. In definition, the geothermal power schemes are three kinds:
- Dry steam plant: Dry steam is the first geothermal technique to draw energy from the earth and power a turbine directly.
- Flash steam plants: flash plants use hot water at high pressure to convert it into cool, hot water at low pressure.
- Binary steam plants: differential plants move a secondary liquid with a smaller boiling point by hot water, which is converted by vapor into a turbine.
As well as, all types of renewable energies there are pros and cons of geothermal heating, Now we can ask a question about the pros and cons of geothermal heating?
Pros and cons of geothermal heating:
geothermal heating and cooling pros and cons provide numerous benefits but also obstacles that need to be overcome so that this natural resource can be used in its fullness. so, what are the advantages and disadvantages of geothermal energy?
Geothermal Energy is Environment-Friendly:
Unlike the burning of fossil fuels, geothermal energy is extracted from the surface earth crust. Geothermal areas are hardly emission-generating or have minimal emissions. In terms of advantages of up to 80% over conventional energy sources, geothermal energy may also aid.
In every megaWh of electric energy it produces, an average geothermal energy plant produces an average of 122 kg of CO2. One-eighth of CO2 emissions come usually from coal-fired power stations.
The world’s total energy consumption of almost 15 terawatts (TW) is nowhere comparable to the massive energy reserves below the planet.
The possible geothermal energy produced by geothermal power plants is projected to be between 0.035 and 2 TW. All geothermal reservoirs are not profitable, however, and only a small portion of their total potential can be used.
Geothermal Is a Reliable & Renewable Source of Energy
The advantage of geothermal energy is that it is a constant source of energy as opposed to other renewable sources, such as wind, solar and biomass. It ensures that this energy is not winding or sun-dependent and is always available.
In addition, as opposed to conventional sources such as coal and fossil fuels, geothermal is a renewable energy source that can sustain its consumption. As scientists say, energy will last trillions of years in the earth’s geothermal reservoirs.
Geothermal power is drawn from the core of the earth and remains as long as the earth exists.
Geothermal Systems are Highly Efficient
Geothermal energy is one of the leading sources of energy when it comes to efficiency. Geothermal heat pump systems consume between 25% and 50% less electricity than conventional heating or cooling systems.
Thanks to its flexible architecture, geothermal systems can also be adapted to different situations and need fewer storage space compared with traditional systems.
Geothermal Systems Need Little or No Maintenance
Geothermal systems have some moving parts inside a structure Geothermal heat pump device have a long lifetime. The warrants for the heat pump pipes are even 25 to 50 years, and the pump can remain in service for at least 20 years. Geothermal systems do not need any maintenance after installation.
A Stable Energy Resource
The output of a geothermal plant can be predicted relatively easily. It is not equivalent to wind or solar energy fluctuations. Conventional power plants depend largely on fuel, so the cost varies according to the market price of the gasoline for the electricity produced. The same goes for geothermal plants as they don’t use fuel, they don’t have to depend on the price of fuel and can provide stable electricity costs to their consumers.
Efficient for Heating/Cooling
Geothermal HVAC (heating, ventilating, and air conditioning) is an efficient system for heating and cooling. In contrast to normal heating and cooling systems, HVAC systems don’t burn fossil fuels to generate heat or cool. They move heat from and to the earth instead. Usually, only the fan, compressor and pump of the device is used with electric power.
The number of homes using geothermal heating and cooling has grown significantly in recent years.
Geothermal energy is currently being explored widely, which means that new technologies are being developed to improve the energy process. This industry sector is being improved and expanded in an increasing number of projects.
What are the Disadvantages of Geothermal Energy?
Although geothermal energy is an environmentally friendly source of energy, it still raises concerns about emissions. Geothermal energy is extracted from the earth and emissions of greenhouse gasses such as carbon dioxide, sulfide hydrogen, methane, and ammonia are created.
Geothermal Sources Can be Depleting
Although geothermal energy is considered sustainable and renewable, certain locations may take time to cool down so that more energy cannot be extracted in the future.
Constructing geothermal power plants poses a risk to the stability of the land. An earthquake of magnitude 3.4 on the Richter scale caused an ongoing geothermal construction in Switzerland in January 1997. The construction of both Germany and New Zealand geothermal power stations has contributed to the earth’s crust being shifted. Hydraulic fractures is responsible for these earthquakes and are a major component of the design of strengthened EGS power plants.
Geothermal System has High Investment Costs
Geothermal energy production will lead to high start-up costs for individual households. The procedures like drilling and construction are complicated and expensive. Even if the return on such investments is substantial and the expenditure can be recovered in 2 to 10 years, the high initial costs still often act as a deterrent.
Land Requirements for Installing the Geothermal System
In order to install geothermal systems, a piece of land is necessary next to the property. Due to limited land, it is especially difficult for homeowners in large towns. In this situation, a heat pump is required in a vertical ground source.
The Way Forward
So, as we read the pros and cons of geothermal heating are enormous, geothermal energy, in general, is a renewable and sustainable form of energy that provides a sustained supply of electricity that can be used to generate electricity and to heat or cool houses and office buildings.
Despite the risk of earthquakes, geothermal energy extraction efforts continue because of its renewable nature and are able to cope with the energy crisis of this planet. This source of energy has the major advantage that it does not depend on weather and has very high capacities.