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The objective of this study is to simulate and analyze the effects of fuzzy logic based tuning of PID controllers for a heating and cooling energy system, while accounting for the dynamics of the major system components. A that a less amount of control signal, interpreted as cooling or heating energy fed into the system, shows the appropriateness of the controller, and the simulation results represent...
Heat exchanger is a key component in aircraft engine bleed air temperature regulation systems. A potential fault associated with heat exchanger is fouling, which reduces the heat transfer efficiency and introduces additional resistance to flow, causing extra drag and fuel consumption. This paper proposes a heat exchanger fouling detection method based on the valve control command of normal engine...
The objective of this work is the development of DMC for a shell and tube heat exchanger and to address the difficulties in tuning a DMC. Although the PID controller is widely used for these types of applications there is still a need for optimization of conservation of energy. In this paper a model based predictive algorithm is used for controlling a temperature of a fluid stream using the shell...
The objective of this work is the development of predictive controller of heat exchanger and addresses the difficulties in tuning a predictive control, predictive control and state feedback controller is used to regulate the temperature of a heat exchanger. The identification of the heat exchanger is done by using the step identification technique. Although the PI controller is widely used for these...
This paper presents an advanced switched model approach for vapor compression cycle (VCC) systems with shut-down and start-up operations. Building upon recent work [2], a full dynamic system model with switched moving-boundary components is presented that is able to accommodate severe transients in heat exchanger dynamics. These new switched heat exchanger models are created with uniform model structures,...
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