You are an engineer that works in a power plant station which produce electrical energy, your...

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You are an engineer that works in a power plant station which produce electrical energy, your manager asked you to do a tour for grade 10 school students to explain the fundamentals of thermodynamic systems, discuss the following questions with students: Q1. Describe the three main types of thermodynamic systems? provide an example on each system type? Q2. What is a thermodynamic property? give an example of a thermodynamic property and generally describe how can you determine a thermodynamic property? Q3. Explain the first law of thermodynamics? How is the first law different from the second law of thermodynamics? Give an example of the first law of thermodynamic from your daily life. Q4. What are the different mechanisms for transferring energy to or from a control volume? Q5. Discuss the following scenarios related to the first law of thermodynamics: a) On a hot summer day, a workshop employee turns his fan on when he leaves the room in the morning. When he returns in the evening, will the room be warmer or cooler than the neighbouring rooms? Why? Assume all the doors and windows are kept closed. b) A water pump that consumes 5 kW of electric power when operating is claimed to take in water from a lake and pump it to a pool whose free surface is 50 m above the free surface of the lake at a rate of 70 L/s. Determine if this claim is reasonable. c) A pump increases the pressure from 10 kPa to 70 kPa. Determine the power input required, to pump 2 m³/s of water, given the inlet temperature of 15 °C. Does the inlet temperature have any significant effect on the required power? You are an engineer that works in a power plant station which produce electrical energy, your manager asked you to do a tour for grade 10 school students to explain the fundamentals of thermodynamic systems, discuss the following questions with students: Q1. Describe the three main types of thermodynamic systems? provide an example on each system type? Q2. What is a thermodynamic property? give an example of a thermodynamic property and generally describe how can you determine a thermodynamic property? Q3. Explain the first law of thermodynamics? How is the first law different from the second law of thermodynamics? Give an example of the first law of thermodynamic from your daily life. Q4. What are the different mechanisms for transferring energy to or from a control volume? Q5. Discuss the following scenarios related to the first law of thermodynamics: a) On a hot summer day, a workshop employee turns his fan on when he leaves the room in the morning. When he returns in the evening, will the room be warmer or cooler than the neighbouring rooms? Why? Assume all the doors and windows are kept closed. b) A water pump that consumes 5 kW of electric power when operating is claimed to take in water from a lake and pump it to a pool whose free surface is 50 m above the free surface of the lake at a rate of 70 L/s. Determine if this claim is reasonable. c) A pump increases the pressure from 10 kPa to 70 kPa. Determine the power input required, to pump 2 m³/s of water, given the inlet temperature of 15 °C. Does the inlet temperature have any significant effect on the required power?

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Q1 Thermodynamic systems are classified into three main types each with distinct characteristics These systems are defined based on the exchange of energy and matter between the system and its surroun... View the full answer