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  • License: Freeware
  • Last update: 6 years ago
  • Total downloads: 176
  • Price: Free |
  • Operating system: Linux, Mac OS X, Win All, BSD, Solaris
  • Publisher: Housam Binous (70 other programs)
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scripts default iconTemperature Control of a Water Tank (Scripts) Publisher's description

We would like to rise water temperature with a heater

We would like to rise water temperature with a heater. Oulet temperature must be equal to the set point temperature (80В°C). Proportional (P), Proportional-Integral (PI) and Proportional-Integral-Derivative (PID) control are used and the respective results are compared. Inlet water temperature is equal to 20В°C. Water flow is equal to 10 m3/hr. Tank volume is equal to 100 m3. Water density and heat capacity are 1 Kg/m3 and 4.19 KJ/(Kg В°C). The heater and the temperature measurement device have a first order delay with a time constant equal to respectively TauQ and TauSens. Initial heat input and tank temperature are equal to 2500 KJ/hr and 20В°C. This problem is solved using Berkeley-Madonna in Chemical Engineering Dynamics by J. Ingham et al. (second edition, Wiley-VCH, 2000). The solution using MatLab is present in this page. Sensor temperature lags slightly behind tank temperature. P control gives a small characteristic offset, PI control shows oscillations and PID control gives best control with no offset and quickly damped oscillations.

A similar program using Mathematica 6.0 is available at the following link:


Please also visit an earlier version using Mathematica 5.0 available at the Wolfram Library Archive:


System Requirements:

MATLAB 6.0 (R12)
Program Release Status: New Release
Program Install Support: Install and Uninstall

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