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 differential equation along with its initial condition
Calculate the time for the temperature of the solvent being discharged to be 63 ° C (write the answer in hours and with two decimals in the space of this question) (20 points)
Homework Answers
![Isugih Sd Given 17°C M = 1800g (Mossinton) m, amo=m= 15kg/h c=2014]/ngoci 120g. 1 Ishlah T at Tiensed Refeence OS 8061 Apply](http://img.homeworklib.com/questions/41517640-e4dc-11ea-9d6d-3df47fc2211d.png?x-oss-process=image/resize,w_560)
using energy balance and given data we can find the time
for any doubts write in comments
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An electric heater is immersed in a well-stirred tank. Solvent
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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 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)...
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...
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An engineer is developing an
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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...
Question 2 2.1 Consider a stirred tank heater which is characterised by the following equation: z4 pCpE The tank has a constant liquid volume V, 50 litres and a constant volumetric flow rate of F 10 litres/minute. For liquid water, the other parameters are pCp 1 kcal/ litre.°C. Determine the process gain and time constant of the system. 2.1.1 2.1.2 Write down the transfer function of the process. (9) 2.1.3 Determine the time-domain output of this process to a step...
Exercise 10 Consider a 2-m-high electric hot water heater that has a diameter of 40 cm and maintains the hot water at 55°C. The tank is located in a small room whose average temperature is 27°C, and the heat transfer coefficients on the inner and outer surfaces of the heater are 50 and 12 W/m2.°C, respectively. The tank is placed in another 46-cm-diameter sheet metal tank of negligible thickness, and the space between the two tanks is filled with foam...
An engineer is developing an
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of hot water. One trial design isshown in the figure. Water is
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Assume that the heat capacity of water is C and that the heat
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