Most car engines run on petrol, which can be treated as octane (C8H18). A top fuel dragster’s fuel includes nitromethane (CH3NO2), which has complete combustion products of carbon dioxide, nitrogen and water. The fuels have calorific values of MJ/kg and 11.3 MJ/kg respectively. A common fuel in drag racing is a mixture of 10% octane and 90% nitromethane (molar fractions). (i) Write the combustion equation for the dragster fuel, including 20% excess air. (ii) If an engine running on octane produces 100 kW when running with 20% excess air, what power would it produce using the 10/90 fuel mix? Assume that the mechanical, volumetric and thermal efficiencies of the engine remain the same
Discuss the Pros & Cons of LNG as a fuel for shipping. What changes in engines (energy converters) are likely to come with the change to LNG as a fuel?
Describe the problem of acoustic pollution and the key elements of how this problem can be addressed.
Discuss the underlying principles of the alternatives to biocidal antifouling paints. 2.6 – Select a potential game changer and discuss its impact on the future of shipping.