In this article we will discuss about the construction and working of thermionic generator with the help of a suitable diagram. i. A thermionic converter/generator comprises a heated cathode (electron emitter) and an anode (electron collector) separated by 'vacuum', the electrical output circuit being connected between the two as shown in the Fig. 9.7. ii. The heat which is [...]
In this article we will discuss about the working of electrostatic mechanical generators with the help of a suitable diagram. Electrostatic mechanical generators convert mechanical energy, usually mechanical potential energy of a fluid, directly into electrical energy. Fig. 9.27 shows the principle of working of liquid drop electrostatic mechanical generator. In this, the gravitational potential energy of water droplets is [...]
The various thermoelectric effects in relation to thermodynamic conversion of heat to work are as follows: 1. Seebeck Effect 2. Peltier Effect 3. Thomson Effect 4.Joule Effect. 1. Seebeck Effect: If two dissimilar materials are joined to form a loop and two junctions maintained at different temperatures, an e.m.f. will be set up around the loop. The magnitude of current [...]