Electricity
Electricity is the most versatile kind of energy used on Earth. It plays an important part in almost every modern technology. Electricity can be transmitted easily over a distance via cables. It can be transformed into several other energy forms. A settlement on Mars can hardly be imagined without electricity.
Contents
Generation
Electrical energy can be produced directly in several ways.
Photovoltaics
The conversion of photons to electricity.
Mechanical Generators
The interactions between moving magnets or electromagnets can be used to produce electricity.
Thermoelectric Generators
A thermoelectric generator produces electricity from differences in thermal energy between two or more areas.
Piezoelectrics
Piezoelectricity is the generation of electricity as a direct result of mechanical deformation.
Electrochemistry
Direct current can be pucdroed from solar energy.Solar cells are also called photovoltaic cells. Solar cells convert the light into direct current electricity, which is the same kind of electricity you would find in a standard battery. Once the energy is converted to electricity, it can be stored in a battery or sent through an inverter which changes the electricity to alternating current, the type of electricity that powers everyday electric items.
Significance for a Martian colony
Inevitabilities
For some settlement applications electricity can not be avoided. This is true for radio link and night time lighting.
Alternatives
Although there is some comfort in using electricity for a variety of applications, there are on the other hand some disadvantages to be considered. The storage of large amounts of electrical energy is a problem. Moreover, every transformation causes some loss of energy. The following alternatives may provide an advantage:
- Movement of machine parts can alternatively be created by muscle work, pneumatics or hydraulics. Muscle work is, for a certain degree, always available. Combination with physical exercise should be considered. Compressed-air is an easy storage for pneumatic energy.
- Heating can be avoided with a thick thermal insulation. At best the human metabolism and the lighting cause enough heat for a comfortable room temperature.
- Automation can be implemented with pneumatics.
