![(a) Thermal energy is supplied continuously to a material initially in the solid state till it reaches well into the gaseous state. With the help of a schematic diagram discuss the change in temperature with the addition of thermal energy in the form of heat. 9 marks) (b) For a thermodynamic system explain what is meant by isothermal process, adiabatic process, and cyclic process. If the system consists of an ideal gas, state the relationship between internal energy, heat and work in each of these processes. 8 marks] (c) A container has 0.02 kg of ice and 0.1 kg of water. Steam at 100 °C is passed 8 marks] through the container until all the ice has just melted. How much water is there in the container now?](http://img.homeworklib.com/questions/cc779be0-73ef-11ea-ab9d-ef2420725e8c.png?x-oss-process=image/resize,w_560)
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(a) Thermal energy is supplied continuously to a material initially in the solid state till it...
1. 600 J of work are done on a system in a process that decreases the system's thermal energy by 300 J . How much heat e...
1. 600 J of work are done on a system in a process that decreases the system's thermal energy by 300 J . How much heat energy is transferred? 2. An open container holds ice of mass 0.565 kg at a temperature of -16.6 ∘C . The mass of the container can be ignored. Heat is supplied to the container at the constant rate of 890 J/minute . The specific heat of ice to is 2100 J/kg⋅K and the heat...
1. What is the purpose of a constant volume gas thermometer. How does it work? 2. What is the difference, if any, betwee...
1. What is the purpose of a constant volume gas thermometer. How does it work? 2. What is the difference, if any, between a isothermal and adiabatic thermodynamic process. Draw them on a pV diagram. 3. Does the First Law of Thermodynamics apply to solids and liquids? Why or why not. 4. What is the most important heat transfer mechanism on earth where there is an atmosphere? Explain how this can cool a nuclear or coal fired power plant, and...
MATERIAL AND ENERGY BALANCE
a) Superheated steam at 300°C and 5.0 bar absolute is used to heat a counter-currently flowing stream of propylene gas in an adiabatic heat exchanger. The propylene gas enters the heat exchanger at 40°C and 250 kPa and leaves at 250°C. All of the steam condenses and emerge from the heat exchanger as a saturated liquid at the same pressure. i) Taking a basis of 100 mol/s of the feed gas, draw a...
2. Write and simplify the closed-system energy balance for each of the following processes, and state...
2. Write and simplify the closed-system energy balance for each of the following processes, and state whether heat and work terms positive or negative or zero. Begin by defining the are system. Indicate why each term in the energy balance is neglected. The contents of an agitated, sealed flask are heated from 25°C to 80 °C.. a. b. A chemical reaction takes place in a closed adiabatic (perfectly insulated) rigid container. Repeat part (b), only suppose that the reactor is...
1) Use the Energy-Interaction Model to explain whether the following statement is true or false
1) Use the Energy-Interaction Model to explain whether the following statement is true or false: "A quantity of ice at 0℃ must contain less total energy than the same quantity of water at 0℃.2) According to the definition of heat in the online reading, can an energy system contain a certain amount of heat? Explain.3) Imagine that you place a piece of copper with an initial temperature of 20℃ in contact with some liquid water with an initial temperature of...
please show work = The use of rock pile thermal energy storage systems has been considered...
please show work
= The use of rock pile thermal energy storage systems has been considered for solar energy and industrial process heat applications. A particular system involves a cylindrical container, 2 m long by 1 m in diameter, in which nearly spherical rocks of 0.03-m diameter are packed. The bed has a void space of 0.42, and the density and specific heat of the rock are p = 2300 kg/m and cp = 879 J/kg-K, respectively. Consider conditions for...
Q1 a) Company A designed a heat pump to supply heat into a library in Canada during...
Q1
a) Company A designed a heat pump to
supply heat into a library in Canada during
winter, so that the library can maintain to be at 20°C. The heat
pump utilizes
12,000 L/min of Refrigerant-134a as the working fluid and absorb
heat from an
industrial water stream. The water stream enters the evaporator at
50°C and exits
at 25°C. The refrigerant enters the evaporator at 10°C with 90%
moisture content
and leaves at 20°C. There is no pressure drop in...
Thermal question A 60-kg hiker plans to climb Mt Kosciuszko (2228 m) starting from Thredbo (1365m). Assume that she is 25% efficient at converting chemical energy from food into mechanical work,...
Thermal question
A 60-kg hiker plans to climb Mt Kosciuszko (2228 m) starting from Thredbo (1365m). Assume that she is 25% efficient at converting chemical energy from food into mechanical work, and that essentially all the work goes into the vertical climb. (a) (3 marks) With reference to the data above, how many servings of Nutrigrain should she eat to provide enough energy for the climb? (b) (6 marks) Climbing a mountain warms you up, and makes you sweat one...
9) An insulated container contains V liters of hot water at temperature T. If M kg...
9) An insulated container contains V liters of hot water at temperature T. If M kg of ice at 0 °C is added to the water, what is the temperature of the system when it reaches equilibrium? Reminder, for water: 1L = 1 kg Cwater = 4190 Cice = 2100 ROK Lboll = 2.26 x 106 steam kg = 2000 .,Lmelt = 3.33 x 105 kg kg kg 10) In an engine, after the fuel is ignited, there is a...
24. The energy rewed during the splining or 10. Which of the ding material transform fusing...
24. The energy rewed during the splining or 10. Which of the ding material transform fusing of atomic aclelis cecelery to hestene a) Chemical egy by Electrical energy het bell e) Noclear en electrice Heather d) Electric guitar 25. Which of the following appliances changes 31. Which of the following appliances asform electrical energy to und energy! (s) clectrical energy to sound energy Refrigerator motor It Electric guitar a) Cooker b) Guia Il Radio Microwave a) I only d) Electricire...
2. Write and simplify the closed-system energy balance for each of the following processes, and state whether heat and work terms positive or negative or zero. Begin by defining the are system. Indicate why each term in the energy balance is neglected. The contents of an agitated, sealed flask are heated from 25°C to 80 °C.. a. b. A chemical reaction takes place in a closed adiabatic (perfectly insulated) rigid container. Repeat part (b), only suppose that the reactor is...
please show work
= The use of rock pile thermal energy storage systems has been considered for solar energy and industrial process heat applications. A particular system involves a cylindrical container, 2 m long by 1 m in diameter, in which nearly spherical rocks of 0.03-m diameter are packed. The bed has a void space of 0.42, and the density and specific heat of the rock are p = 2300 kg/m and cp = 879 J/kg-K, respectively. Consider conditions for...
Q1
a) Company A designed a heat pump to
supply heat into a library in Canada during
winter, so that the library can maintain to be at 20°C. The heat
pump utilizes
12,000 L/min of Refrigerant-134a as the working fluid and absorb
heat from an
industrial water stream. The water stream enters the evaporator at
50°C and exits
at 25°C. The refrigerant enters the evaporator at 10°C with 90%
moisture content
and leaves at 20°C. There is no pressure drop in...
Thermal question
A 60-kg hiker plans to climb Mt Kosciuszko (2228 m) starting from Thredbo (1365m). Assume that she is 25% efficient at converting chemical energy from food into mechanical work, and that essentially all the work goes into the vertical climb. (a) (3 marks) With reference to the data above, how many servings of Nutrigrain should she eat to provide enough energy for the climb? (b) (6 marks) Climbing a mountain warms you up, and makes you sweat one...
9) An insulated container contains V liters of hot water at temperature T. If M kg of ice at 0 °C is added to the water, what is the temperature of the system when it reaches equilibrium? Reminder, for water: 1L = 1 kg Cwater = 4190 Cice = 2100 ROK Lboll = 2.26 x 106 steam kg = 2000 .,Lmelt = 3.33 x 105 kg kg kg 10) In an engine, after the fuel is ignited, there is a...
24. The energy rewed during the splining or 10. Which of the ding material transform fusing of atomic aclelis cecelery to hestene a) Chemical egy by Electrical energy het bell e) Noclear en electrice Heather d) Electric guitar 25. Which of the following appliances changes 31. Which of the following appliances asform electrical energy to und energy! (s) clectrical energy to sound energy Refrigerator motor It Electric guitar a) Cooker b) Guia Il Radio Microwave a) I only d) Electricire...
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