Dynamic modeling and control of plate heat exchanger

Al-Dawery, Salam K.; Al-Rahawi, Ayham M. Ismail; Al-zobai, Khalid M. Mousa

doi:10.1016/j.ijheatmasstransfer.2012.06.094

Cited by 44 publications

(16 citation statements)

References 12 publications

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“…The nonlinear heating substation control system composed of plate heat exchanger, equal percentage valve and PI controller was also established in Simulink with the mathematical models Eq. (5), (6), (10) and (11). The dynamic responses of the heating substation control system were calculated with Simulink.…”

Section: Control and Stability Of Heating Substationmentioning

confidence: 99%

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Operation stability analysis of district heating substation from the control perspective

Wang

You

Zhang

et al. 2017

Energy and Buildings

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Section: Control and Stability Of Heating Substationmentioning

confidence: 99%

“…Al-Dawery [10] established a first order model with time delay to suggest the transient responses of a plate heat exchanger, and a fuzzy logic controller of the plate heat exchanger was designed to achieve less settling time and oscillatory behavior.…”

Section: Introductionmentioning

confidence: 99%

Operation stability analysis of district heating substation from the control perspective

Wang

You

Zhang

et al. 2017

Energy and Buildings

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“…The transient dynamics of forced convections for the system can then be analyzed using classical frequency response analysis in control. 11 The heat transfer process is presumably incompressible for the heater and the specimen. The process is described by the heat diffusion equation,…”

Section: B Control-oriented Modelmentioning

confidence: 99%

Dynamic Modeling and Numerical Simulation of Acoustic-Thermal-Fluid Coupling for Hypersonic Vehicle Fatigue Test

Wang

Zhong

Huang

2013

19th AIAA/CEAS Aeroacoustics Conference

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A control-oriented dynamic model for acoustic-thermal-fluid coupling problem in thermalacoustic fatigue testing facility was presented in this paper. By this control-oriented model, transient dynamic process of multi-physics coupling problem in a progressive wave tube could be approximately studied. The proposed model is verified by comparing to computational results using acoustic and fluid computational tools. We found that the proposed modeling method is much faster than classical acoustic and fluid computational methods. The modeling result agrees largely well with the computational results. The potential reasons of the modeling errors are discussed in this paper. Then, the model should be useful in fatigue testing preparation and evaluations.

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“…et al [7][8][9][10][11] used high-power laser to generate a rapid temperature rise on the thermocouple surface and obtained the time constant. In addition, there are other methods for dynamic excitation and calibration of thermocouple [12][13][14][15].In the measurement methods and systems for time constant, how to produce stable temperature field and step excitation is the main research content when the system is established. In the above measurement methods, the measurement systems under water flow and air flow environments were constructed for different heat transfer environments.…”

mentioning

confidence: 99%

mentioning

confidence: 99%

A Measurement System for Time Constant of Thermocouple Sensor Based on High Temperature Furnace

Zhang

Hao

et al. 2018

Applied Sciences

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In dynamic temperature measurement, thermocouple sensors are widely used, and their dynamic characteristics directly affect the accuracy of the test results. So before applying thermocouple sensors to dynamic temperature measurement, their dynamic characteristics should be obtained, and their dynamic performance parameters should be analyzed. The time constant is the most important dynamic parameter, which reflects the response speed of a thermocouple sensor. Therefore, it is necessary to measure the time constant. The time constant is closely related to the heat transfer mode, so the heat transfer environment of the time constant measurement system should be similar to the application environment of thermocouple sensor. When using the thermocouple to measure the temperature in various kilns, the heat transfer is mainly through the radiative mode, and existing equipment, such as constant temperature water/oil tank, shock wave tube and other devices, cannot be used to measure the time constant to reflect scenarios in actual measurement applications. Therefore, this paper proposed a new method to measure the time constant of the thermocouple by improved high temperature furnace. In the system, the high temperature furnace was used to generate the stable temperature field, and the fast feed device was used to insert the thermocouple into the high temperature furnace and generates the ramp temperature excitation. The temperature can reach 1500 • C in the furnace, and the temperature error in uniform temperature field is ±1 • C. Finally, the time constant of a K-type thermocouple was measured, and the uncertainty of the measurement result was analyzed.2 of 12 transfer mode. At present, there are many kinds of measurement methods and devices of time constant, such as constant temperature water/oil tank, hot wind tunnel, shock tube, laser, and so on.Stable temperature fields in water flow and airflow environments are generated by constant temperature water/oil tank and hot wind tunnel respectively. The thermocouple is inserted into the stable flow field rapidly, and the thermocouple is excited by step temperature. The time constant is obtained by the thermocouple response. Xiong J. and Wang X.N. [1,2] measured the response time and delay time of the thermocouple by constant temperature water/oil tank, and the dynamic error was corrected. Zhao S.A. [3] developed a hot wind tunnel with the temperature range from 1000 • C to 1700 • C, and the step response of the thermocouple was obtained. Shock tube is used to generate step pressure, which is usually used for dynamic calibration of pressure sensors. After breaking the film, the gas in the high pressure chamber compresses the gas in the low pressure chamber to produce the shock wave. The step pressure is generated on the pressure sensor by the shock wave and used to excite the pressure sensor. At the same time, due to the gas compression, there is also a temperature step behind the shock wave, which can be used to excite the thermocouple. Meng X.F. et al. [4,5] modified ...

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Dynamic modeling and control of plate heat exchanger

Cited by 44 publications

References 12 publications

Operation stability analysis of district heating substation from the control perspective

Operation stability analysis of district heating substation from the control perspective

Dynamic Modeling and Numerical Simulation of Acoustic-Thermal-Fluid Coupling for Hypersonic Vehicle Fatigue Test

A Measurement System for Time Constant of Thermocouple Sensor Based on High Temperature Furnace

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