At time = 0, a constant heating power of 100 kW is applied to a boiler that intends to raise the temperature of the fluid inside to 100 °C. The initial temperature of the fluid is 25 °C. Temperature is taken every 2 minutes, starting at t = 0. The log after 1 hour is shown below. The x-axis is time (in minutes) while the y-axis is the temperature T. The system may be assumed to be of first order.

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Chapter29: Dc Generators
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At time = 0, a constant heating power of 100 kW is applied to a boiler that intends to raise the temperature of the
fluid inside to 100 °C. The initial temperature of the fluid is 25 °C. Temperature is taken every 2 minutes, starting at t
= 0. The log after 1 hour is shown below. The x-axis is time (in minutes) while the y-axis is the temperature T. The
system may be assumed to be of first order.
110.00
100.00
90.00
80.00
70.00
60.00
50.00
40.00
30.00
20.00
Answer:
0
0.75
3
10
What is the DC gain of the system,
O 1
1.333
20
Let 8(t) be the function describing the temperature increase, i.e. 8(t) = T(t) - 25, where T is the actual temperature.
The input power is p(t) = 100 u(t) kW.
What is a feasible time delay, in minutes, for the system?
What is the transfer function
e(s) =
P(s)
30
e(s)
P(s)
40
50
(in C°/kW)?
60
e(s)
-? Provide at least 6 significant digits for the numerical coefficients.
P(s)
Transcribed Image Text:At time = 0, a constant heating power of 100 kW is applied to a boiler that intends to raise the temperature of the fluid inside to 100 °C. The initial temperature of the fluid is 25 °C. Temperature is taken every 2 minutes, starting at t = 0. The log after 1 hour is shown below. The x-axis is time (in minutes) while the y-axis is the temperature T. The system may be assumed to be of first order. 110.00 100.00 90.00 80.00 70.00 60.00 50.00 40.00 30.00 20.00 Answer: 0 0.75 3 10 What is the DC gain of the system, O 1 1.333 20 Let 8(t) be the function describing the temperature increase, i.e. 8(t) = T(t) - 25, where T is the actual temperature. The input power is p(t) = 100 u(t) kW. What is a feasible time delay, in minutes, for the system? What is the transfer function e(s) = P(s) 30 e(s) P(s) 40 50 (in C°/kW)? 60 e(s) -? Provide at least 6 significant digits for the numerical coefficients. P(s)
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