The Galway aquarium have asked you to build an energy model for a new tropical f
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The Galway aquarium have asked you to build an energy model for a new tropical fish-tank that they propose installing. See Fig. 1. This model will be used to assess the total electrical energy requirements to maintain tank temperature over the course of a year. The following inputs/assumptions are known: Tank initial Temp T-tank = 25 C Tank desired temperature is between 24C and 26C -Predicted air temperature T_air for the aquarium building is to be modelled by a square wave where temperature is 21 C during the opening hours of 6am-18:00pm and 15 C otherwise. See below Fig.2. Mass of water in tank M kg, specific heat capacity of water c_water J/KgK Thermal Resistance for the tank structure = R equiv Heating system pump delivers M kg/sec of water at 35 C to heat tank as required (ignores density changes) Assumption: The electrical power (J/s) needed to drive the pump can be approximated as P = M g h where is efficiency (-0.7), M is mass flowrate of water, g is gravity (9.8 m/s, and h= head of water in m (=1) Develop a high level Simulink model of the system and show separately the details of any subsystem. You should also develop a script that sets model parameters. Explain how you will feed these parameters into the model. The primary output of your model will be the accumulated energy (thermalpump electrical) in kWHr, needed to maintain the tank at the desired temperature over the yearExplanation / Answer
System Modeling Approach From the perspective of system engineering, physical system models are not the unique concern. Though a lot of complex and completed model libraries and model management platforms already exist, it’s also different for system designers in each layer to understand the whole physical system model and share the model information with each other except for documents or reports. This leads to a need for an information model for information exchange and function descriptions. In this part, several system modeling languages, (e.g., SysML, EAST-ADL, etc.) are investigated. 1) SysML SysML is a general-purpose modeling language for systems engineering with a subset of UML2 and additional extensions to satisfy the demands of the language description. SysML provides constructs for modeling systems engineering problems including requirements, structure, behavior, allocations, and constraints [6]. 2) EAST-ADL EAST-ADL is a language to describe automotive electrical and electronic systems; it relates closely to SysML and can be seen as a domain specific tailoring for automotive systems. It enables to capture detailed information for documentation, design, analysis and synthesis from the top level characteristics to tasks and interface &communication framework) ARCADIA Arcadia / Capella is a field-proven domain specific modeling solution for system engineering. It has an open source framework to define operation, system, logic and physical system [8]. d in autobreaking system design. The verification purpose is to test if the new autobreaking controller can satisfy the ‘3- second rule’, which is a measurement on the time interval for the vehicles to pass the same fixed point on road. If a vehicle reaches such a point within 3 seconds after its foregoing vehicle, then the following distance is too short. For icy or snow-covered road, the corresponding interval can be 7~8 sec
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