Geothermal energy plant 
It is likewise a thermal energy plant, however the steam required for energy technology is to be had glaringly in a few a part of the earth below the earth floor. According to severa theories earth has a molten core. The reality that volcanic motion taken region in masses of locations at the floor of earth permits those theories. 
Figure: Geo-thermal energy plant 
Steam nicely 
Pipes are embedded at locations of easy volcanic motion called steam wells, wherein the molten inner mass of earth vents to the atmospheric with very excessive temperatures. By sending water through embedded pipes, steam is raised from the underground steam garage wells to the floor level. 
Separator 
The steam is then passed through the separator wherein maximum of the dust and sand carried through way of approach of the steam are removed. 
Turbine 
The steam from the separator is passed through steam drum and is used to run the turbine which in flip drives the generator. The exhaust steam from the turbine is condensed. The condensate is pumped into the earth to take withinside the floor warmth all yet again and to get transformed into steam. 
Location of the plant, set up of device like manage unit etc., withinside the supply of warmth and the fee of drilling deep wells as deep as 15,000 metres are a number of the issues typically encountered.

Fuel mobileular with Schematic diagram 
A Fuel mobileular is an electrochemical device in which the chemical strength of a conventional fueloline is converted right now and correctly into low voltage, direct-present day electric powered powered powered strength. One of the chief benefits of this form of device is that because of the reality the conversion, atleast in theory, can be accomplished isothermally, the Carnot impediment on preferred ordinary overall performance does not apply. A fueloline mobileular is regularly described as primary battery in which the fueloline and oxidizer are stores out of doors to the battery and fed to it as needed. 
Fig. shows a schematic diagram of a fueloline mobileular. The fueloline fueloline diffuses through the anode and is oxidized, consequently liberating electrons to the out of doors circuit; the oxidizer diffuses through the cathode and is reduced through manner of way of the electrons that have come from the anode through manner of way of way of the out of doors circuit. 
The fueloline mobileular is a device that maintains the fueloline molecules from mixing with the oxidizer molecules, permitting, however, the transfer of electrons through manner of way of a metallic course that would include a load. 
Of the available fuels, hydrogen has thus far given the most promising results, irrespective of the fact that cells ingesting coal, oil or natural fueloline might be economically loads greater useful for big scale applications.