ABSTRACT

In order to produce electricity by means of generators, this chapter provides a method of propulsion. Where a natural and continuous flow of water is available, its potential energy can be used to turn a waterwheel coupled to a generator. This method is obviously inexpensive due to the fact that no cost is involved in providing the propulsion. Ground source heat pumps (GSHP) work on the same principle as a refrigerator in that heat is extracted from the air inside the fridge by a heat exchanger and dissipated to the air outside. Air source heat pumps are similar to (GSHP) but in this case the heat is extracted from the outside air and either circulated via ducting (air to air) or used to heat the domestic water (air to water). Basically, Micro-combined heat and power (CHP) is an engine that drives a generator. The heat from the engine is used to heat water whist the generator produces electricity.