Question

Give reasons for:

a) Charcoal is a better fuel in comparison to wood.

b) Bio- gas is considered an ideal fuel.

c) What does OTEC stand for.

Answer 1

(A). Charcoal is better fuel than wood because: When the same amount of charcoal and woodare burnt, charcoal produces almost twice the heat produced by wood. Charcoal produces much less smoke than wood. Charcoal is a compact fuel that is more convenient to handle than wood.

(B). Biogas is a methane rich flammable gas that results from the decomposition of organic waste material. Bio gas is flammable mixture of 50 to 80 percentage of methane (CH4), 15 to 45 percentage of carbon dioxide (CO2) and 5 % of water and some other trace gases. ... Because biogas consider an ideal fuel for domestic use.

(C). Ocean thermal energy conversion (OTEC) uses the temperature difference between cooler deep and warmer shallow or surface seawaters to run a heat engine and produce useful work, usually in the form of electricity. OTEC can operate with a very high capacity factor and so can operate in base load mode.