New Zealand Opens ‘World’s Largest’ Binary Geothermal Energy Plant (2)

Geothermal Power StationEach and every kind of energy has its personal positive aspects and limitations. In this article I will talk about about the pros and cons of geothermal energy.

The efficiency of a steam turbine is limited by the maximum temperature of the steam developed and is not directly a function of the fuel used. For the exact same steam circumstances, coal, nuclear and gas energy plants all have the same theoretical efficiency. All round, if a technique is on consistently (base load) it will be a lot more effective than a single that is employed intermittently(peak load).

Due to the fact this temperature is not adequate to create steam the water is pumped and transferred to a heat exchanger, where it is utilised to heat up a secondary liquid (therefore the term binary”) such as isopentane, which boils at a lower temperature. Isopentane’s boiling point is 28°C, compared to the 100°C of water. The steam made from this liquid then turns turbines like in the prior strategies.

Flash steam geothermal power plants rely on highly pressurised, superheated water as an alternative of steam. The highly pressurised liquid is pushed through a series of stress tanks. In turn, these holding tanks lower the stress of the liquid, enabling it to turn into steam. This process is repeated various occasions in various depressurised chambers with the steam then collected and ‘flashed’ through to drive a turbine generator technique to make electrical energy. As with the dry steam geothermal power technique, the excess hot liquid is cooled and / or condensed and then pumped back into the ground so the liquid is replenished.

Biomass can also be used as a transport fuel. This can be accomplished in a single of two techniques. Oil can be extracted from the fuel in a similar proces to that which is done to generate vegetable cooking oil and then immediately after a small bit of processing biodiesel is formed which can be applied in diesel engines. An option is to use the biomass to create alcohol in a comparable way to the approach which is followed to produce whisky or vodka. Pure alcohol in the form of ethanol is produced, and this is a highly flammable fuel which can be utilised in modified petrol (gasoline) engines.