An electric heater is immersed in a well-stirred tank. Solvent at 19°C, which has a heat...
An electric heater is immersed in a well-stirred tank. Solvent at 19°C, which has a heat capacity of 2.1 kJ/(kg°C), is fed at a speed of 11 kg/h. The hot solvent is discharged at the same rate. The tank initially contains 180 kg of cold solvent at 10°C. The heat flow of the electric heater is 884 W. Do the following:
a) Draw the system with all its variables.
b) Write the differential equation along with its initial
condition.
c) Calculate the time for the temperature of the solvent being
discharged to be 63°C (write the answer in hours and with two
decimals)
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An electric heater is immersed in a well-stirred tank. Solvent
at 19°C, which has a heat...
An electric heater is immersed in a well-stirred tank. Solvent at 19°C, which has a heat...
An electric heater is immersed in a well-stirred tank. Solvent at 19°C, which has a heat capacity of 2.1 kJ/(kg°C), is fed at a speed of 11 kg/h. The hot solvent is discharged at the same rate. The tank initially contains 180 kg of cold solvent at 10°C. The heat flow of the electric heater is 884 W. Write the differential equation along with its initial condition.
An electric heater is immersed in a well-stirred tank. Solvent at 19°C, which has a heat...
An electric heater is immersed in a well-stirred tank. Solvent at 19°C, which has a heat capacity of 2.1 kJ/(kg°C), is fed at a speed of 11 kg/h. The hot solvent is discharged at the same rate. The tank initially contains 180 kg of cold solvent at 10°C. The heat flow of the electric heater is 884 W. Calculate the time for the temperature of the solvent being discharged to be 63°C (write the answer in hours and with two...
An electric heater is immersed in a well-stirred tank. Solvent at 17 ° C, which has...
An electric heater is immersed in a well-stirred tank. Solvent at 17 ° C, which has a heat capacity of 2.1 kJ / (kg ° C), is fed at a rate of 15 kg / h. The hot solvent is discharged at the same rate. The tank initially contains 120 kg of cold solvent at 6 ° C. The heat flow of the electric heater is 886 W. Do the following: Draw the system with all its variables Write the...
2. In the constant volume, stirred-tank heater shown in the figure below, the flow rates and...
2. In the constant volume, stirred-tank heater shown in the figure below, the flow rates and material properties are held constant. The tank contains a heating element, which is initially off and the tank is the same temperature as the inlet stream. When t=0, the heater is turned on to a constant heating rate Q. For this material, assume C = C = Cp = Cy. m,Ti P,V,C, T(t) ń, r(t) o a. Write a transient thermal energy balance to...
Please answer question 6. thanks 1. A 7 kg lead sphere that has 35 °C temperature...
Please answer question 6. thanks
1. A 7 kg lead sphere that has 35 °C temperature falls through the air. When the sphere is 15 m above the ground, its speed is 20 m/s. Suppose that when the sphere hits the ground, 75% of its kinetic energy converts to heat that raises its temperature. Specific heat capacity of lead c = 128 J/kg.°C, g=9.8 m/s. A. Setup with a labeled diagram. b. Write down in symbols the energy equation. c....
Two large parallel plates with surface conditions approximating those of a blackbody are maintained at 800°C...
Two large parallel plates with surface conditions approximating those of a blackbody are maintained at 800°C and 100°C, respectively. Determine the rate of heal transfer by radiation between the plates in Wim and the radiative heat transfer coefficient in W/m K ) 12 Write down the one-dimensional sent heal conduction equation for a plane wall with constant thermal conductivity and heat generation in its simplest form, and indicate what each variable represents 13 Write down the one-dimensional transient heat conduction...
summatize the following info and break them into differeng key points. write them in yojr own...
summatize the following info and break them into differeng key points. write them in yojr own words
apartus
6.1 Introduction—The design of a successful hot box appa- ratus is influenced by many factors. Before beginning the design of an apparatus meeting this standard, the designer shall review the discussion on the limitations and accuracy, Section 13, discussions of the energy flows in a hot box, Annex A2, the metering box wall loss flow, Annex A3, and flanking loss, Annex...
summarizr the followung info and write them in your own words and break them into different...
summarizr the followung info and write them in your own words and break them into different key points. 6.5 Metering Chamber: 6.5.1 The minimum size of the metering box is governed by the metering area required to obtain a representative test area for the specimen (see 7.2) and for maintenance of reasonable test accuracy. For example, for specimens incorporating air spaces or stud spaces, the metering area shall span an integral number of spaces (see 5.5). The depth of...
2. In the constant volume, stirred-tank heater shown in the figure below, the flow rates and material properties are held constant. The tank contains a heating element, which is initially off and the tank is the same temperature as the inlet stream. When t=0, the heater is turned on to a constant heating rate Q. For this material, assume C = C = Cp = Cy. m,Ti P,V,C, T(t) ń, r(t) o a. Write a transient thermal energy balance to...
Please answer question 6. thanks
1. A 7 kg lead sphere that has 35 °C temperature falls through the air. When the sphere is 15 m above the ground, its speed is 20 m/s. Suppose that when the sphere hits the ground, 75% of its kinetic energy converts to heat that raises its temperature. Specific heat capacity of lead c = 128 J/kg.°C, g=9.8 m/s. A. Setup with a labeled diagram. b. Write down in symbols the energy equation. c....
Two large parallel plates with surface conditions approximating those of a blackbody are maintained at 800°C and 100°C, respectively. Determine the rate of heal transfer by radiation between the plates in Wim and the radiative heat transfer coefficient in W/m K ) 12 Write down the one-dimensional sent heal conduction equation for a plane wall with constant thermal conductivity and heat generation in its simplest form, and indicate what each variable represents 13 Write down the one-dimensional transient heat conduction...
summatize the following info and break them into differeng key points. write them in yojr own words
apartus
6.1 Introduction—The design of a successful hot box appa- ratus is influenced by many factors. Before beginning the design of an apparatus meeting this standard, the designer shall review the discussion on the limitations and accuracy, Section 13, discussions of the energy flows in a hot box, Annex A2, the metering box wall loss flow, Annex A3, and flanking loss, Annex...
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