Related Questions

A solid-oxide fuel cell is fed with carbon monoxide and reacts with air to produce CO2. This reaction will produce 2 electrons which are used to power an electric circuit external to the fuel cell. The reaction equation is shown below: 2CO(g) + O2(g) -> 2CO2(g) ΔHr° = -565.96 kJ/mol This reaction does not occur for other types of fuel cells which use a catalyst, such as polymerelectrolyte membrane or phosphoric-acid fuel cells. The presence of carbon monoxide on the anode side of these types of fuel cells will cause catalyst poisoning, reducing the efficiency and voltage of the fuel cell. Determine the rate of enthalpy change for a carbon dioxide production rate of 208 mol/hr. The extent of the reaction occurring in the fuel cell can be obtained by the following equation: where:
What is minimum amount of air required per m3 of gaseous fuel for complete combustion? m3/m3 of fuel b) 1/100 m3/m3 of fuel c) 1/21 m3/m3 of fuel d) 1/100 m3/m3 of fuel
With reference to 'fuel cells' in which hydrogen rich fuel and oxygen are used to generate electricity. Consider the following statements.
1. If pure hydrogen is used as a fuel, the fuel cell emits heat and water as by products.
2. Fuel cells can be used for powering buildings and not for small devices like laptop, computers.
3. Fuel cells produce electricity in the form of Alternating Current (AC).
Which of the statements given above is/are correct?
A draught of 15mm of water is produced by using a chimney of height 30m. The ambient air and flue gases are at 27oC and 300oC respectively. The coal burned on the grate contains 81% carbon, 5% moisture and remaining ash. Neglect the losses and assume values of burnt products equivalent to the volume of air supplied and for the complete combustion of fuel, find the percentage of excess of air supplied?
Combustion of furnace oil in a furnace (soaking pit) with preheated combustion air at 400°C results in saving of about __________ percent furnace oil as compared to its combustion with atmospheric air, if the flue gas outlet temperature from the soaking pit is 1200°C.
Find the volume of air required for complete combustion of 1 m3 of acetylene and the weight of air necessary for the combustion of 1 kg of fuel?
In this problem we wish to develop the combustion equation and determine the air-fuel ratio for the complete combustion of n-Butane (C4H10) with theoretical air.
Determine the corrections or otherwise of the following Assertion and reason : Assertion : Total fuel volume of aircraft is divided into mission or used fuel, reserve fuel and trapped fuel. Reason: Depending on type of aircraft, fuel fraction for each category will be different. and are true and is the correct reason for b) Both and are true but is not the correct reason for c) is true but is false d) is false but is true
What is the percentage of excess air if 50 grams of air is in excess and 150 grams of air enters the process?
Use of excess of combustion air in the combustion of fuels results in