A fuel cell cogeneration system is developed and it will produce 2 kW of electricity and...
A fuel cell cogeneration system is developed and it will produce 2 kW of electricity and 2 kW of hot water on a continuous basis. If the system consumed 0.6 litres of LPG/hr, what is the efficiency of this cogeneration system? [The energy content of LPG is 28.6 MJ/litre]
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A fuel cell cogeneration system is developed and it will produce
2 kW of electricity and...
Some hydrogen fuel cell vehicles fill up at a gas station that uses hydrolysis to produce...
Some hydrogen fuel cell vehicles fill up at a gas station that uses hydrolysis to produce the hydrogen gas. When hydrogen is combined with oxygen in the fuel cell, energy is released to power the car. The reaction is like hydrolysis in reverse 2H2O (liq.) + energy ← 2H2 (gas) + O2 (gas) Pick all statements which are true. Select one or more: a. using hydrogen made by electrolysis is more efficient and cleaner than using the fuel or electricity...
Some hydrogen fuel cell vehicles fill up at a gas station that uses hydrolysis to produce...
Some hydrogen fuel cell vehicles fill up at a gas station that uses hydrolysis to produce the hydrogen gas. When hydrogen is combined with oxygen in the fuel cell, energy is released to power the car. The reaction is like hydrolysis in reverse 2H2O (liq.) + energy ← 2H2 (gas) + O2 (gas) Pick all statements which are true. Select one or more: a. hydrogen is storing a fraction of the energy from the source of the electricity, which could...
Some hydrogen fuel cell vehicles fill up at a gas station that uses hydrolysis to produce...
Some hydrogen fuel cell vehicles fill up at a gas station that uses hydrolysis to produce the hydrogen gas. When hydrogen is combined with oxygen in the fuel cell, energy is released to power the car. The reaction is like hydrolysis in reverse 2H2O (liq.) + energy + 2H2 (gas) + O2 (gas) Pick all statements which are true. Select one or more: O a. hydrogen fuel cells can produce more energy than is used to create the hydrogen by...
Question 6 10 points Save A A 100-watt light bulb illuminates a solar cell. The electricity...
Question 6 10 points Save A A 100-watt light bulb illuminates a solar cell. The electricity from the solar cell operates a water pump that delivers 1 watt of power. What is the efficiency of the system? 100% 99% 1% 0.5% 0.1% uestion7 Batteries use a to produce electricity. fuel cell chemical reaction nuclear reaction solar cell We were unable to transcribe this image
A typical large coal fired electric power plant produces 1,200MW of electricity by burning fuel with...
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Hydrogen and oxygen gases are utilized as reactants for fuel cells. Hydrogen gas is oxid side to ...
Hydrogen and oxygen gases are utilized as reactants for fuel cells. Hydrogen gas is oxid side to generate protons and electrons which move to the cathode side to react with oxygen to produce electricity and water as byproduct. Molecular weight: M(H2) -2 g/mol, M(O)-32 g/mol, M(H-0) - 18 g/mol. Detailed reactions in each side are described below: ized in the anode (-) side: | (+) side: Cell: H2 → 2H+ + 2e- E" 0.00V 202 + 2H+ + 2e-→ H2O...
(2) (24 pts) A fuel cell produces electricity via a combustion reaction. A DMFC is a...
(2) (24 pts) A fuel cell produces electricity via a combustion reaction. A DMFC is a proton-exchange fuel cell that uses methanol CH3OH) as the fuel, which reacts with molecular oxygen to produce carbon dioxide and water. (a) (4 pts) Write the balanced combustion reaction for this methanol fuel cell. (b) (4 pts) Write the balanced half-reactions occurring at the cathode and anode of this fuel cell (assume standard acidic conditions) (e) (4 pts) Evaluate AGº (kJ) and AE° (V)...
(2) (24 pts) A fuel cell produces electricity via a combustion reaction. A DMFC is a...
(2) (24 pts) A fuel cell produces electricity via a combustion reaction. A DMFC is a proton-exchange fuel cell that uses methanol CH OH() as the fuel, which reacts with molecular oxygen to produce carbon dioxide and water. (a) (4 pts) Write the balanced combustion reaction for this methanol fuel cell (b) (4 pts) Write the balanced half-reactions occurring at the cathode and anode of this fuel cell (assume standard acidic conditions). (c) (4 pts) Evaluate AG° (kJ) and AE...
A fuel cell is an electrochemical device that reacts hydrogen with oxygen from the air to...
A fuel cell is an electrochemical device that reacts hydrogen with oxygen from the air to produce water and DC electricity. A proposed application is replacement of the gasoline-fueled internal combustion engine in an automobile with a 100 kW fuel cell. You are on a summer internship with a gas supplier planning to transport hydrogen to service stations for the use in cars powered by fuel cells. The hydrogen is to be transported in tube trailers, each of which has...
Here is the energy analysis of the hydronic heating system depicted in the diagram. The boiler...
Here is the energy analysis of the hydronic heating system
depicted in the diagram.
The boiler plant consists of two identical boilers, each having
the following characteristics:
• Fuel: natural gas
• Burner Type: on/off
• Rated Output = 85 kW
• Rated Efficiency, nFL = 80%
The boilers operate in a “Lead/Lag” arrangement, i.e., Boiler 1
operates first to meet the load (up to its capacity), and Boiler 2
operates as necessary to meet any remaining load.
The pump...
Some hydrogen fuel cell vehicles fill up at a gas station that uses hydrolysis to produce the hydrogen gas. When hydrogen is combined with oxygen in the fuel cell, energy is released to power the car. The reaction is like hydrolysis in reverse 2H2O (liq.) + energy + 2H2 (gas) + O2 (gas) Pick all statements which are true. Select one or more: O a. hydrogen fuel cells can produce more energy than is used to create the hydrogen by...
Question 6 10 points Save A A 100-watt light bulb illuminates a solar cell. The electricity from the solar cell operates a water pump that delivers 1 watt of power. What is the efficiency of the system? 100% 99% 1% 0.5% 0.1% uestion7 Batteries use a to produce electricity. fuel cell chemical reaction nuclear reaction solar cell We were unable to transcribe this image
Hydrogen and oxygen gases are utilized as reactants for fuel cells. Hydrogen gas is oxid side to generate protons and electrons which move to the cathode side to react with oxygen to produce electricity and water as byproduct. Molecular weight: M(H2) -2 g/mol, M(O)-32 g/mol, M(H-0) - 18 g/mol. Detailed reactions in each side are described below: ized in the anode (-) side: | (+) side: Cell: H2 → 2H+ + 2e- E" 0.00V 202 + 2H+ + 2e-→ H2O...
(2) (24 pts) A fuel cell produces electricity via a combustion reaction. A DMFC is a proton-exchange fuel cell that uses methanol CH3OH) as the fuel, which reacts with molecular oxygen to produce carbon dioxide and water. (a) (4 pts) Write the balanced combustion reaction for this methanol fuel cell. (b) (4 pts) Write the balanced half-reactions occurring at the cathode and anode of this fuel cell (assume standard acidic conditions) (e) (4 pts) Evaluate AGº (kJ) and AE° (V)...
(2) (24 pts) A fuel cell produces electricity via a combustion reaction. A DMFC is a proton-exchange fuel cell that uses methanol CH OH() as the fuel, which reacts with molecular oxygen to produce carbon dioxide and water. (a) (4 pts) Write the balanced combustion reaction for this methanol fuel cell (b) (4 pts) Write the balanced half-reactions occurring at the cathode and anode of this fuel cell (assume standard acidic conditions). (c) (4 pts) Evaluate AG° (kJ) and AE...
Here is the energy analysis of the hydronic heating system
depicted in the diagram.
The boiler plant consists of two identical boilers, each having
the following characteristics:
• Fuel: natural gas
• Burner Type: on/off
• Rated Output = 85 kW
• Rated Efficiency, nFL = 80%
The boilers operate in a “Lead/Lag” arrangement, i.e., Boiler 1
operates first to meet the load (up to its capacity), and Boiler 2
operates as necessary to meet any remaining load.
The pump...
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