COMP32412: The Internet of Things - Energy Demand Active Management For Domestic Use - IT Assessment Answer

Internal Code: 1AGIJE Code: COMP32412

IT Assessment Answer

Assignment Task: We study the case of energy demand active management for domestic use. In this context we consider the case of ? identical homes. This implies identical thermal insulation properties and an identical heating energy demand. These homes have their thermostats remotely controlled and participate in a demand control response program by controlled switching of the heating systems. We make the following assumptions: 1. The external temperature ???? is assumed constant throughout the simulation. COMP32412 2. The thermostats are not correlated. This implies that at a particular time the temperature at each home has a random value within the prescribed boundaries and that the thermostat can either be switched on or off (i.e. the home is either heating up or cooling off). COMP32412 We study two different strategies for reducing the temperature in all homes to a new range: COMP32412 1. Complete switch off. All homes are switched off simultaneously at ?=0 and allowed to cool down to the new lowest temperature ?????. After that, each home continues its own heating/cooling cycle. COMP32412 2. Partial switch off. For this case, we assume that ?>????. Then all homes can be divided into two groups, depending on their temperature at ?=0. In the first group are the homes with the temperatures in the range [????,????+???????] (the purple stripe in the Figure). For such homes there is a choice whether to heat them first to the maximum new temperature ?????+?, or to leave them to cool down to the minimal temperature ?????. For the homes in the second group, i.e. the homes with temperatures in the range [?????,????] (the green stripe in the Figure), we assume that they are cooled down first to the new low temperature ?????. COMP32412 TASKS - COMP32412 The code int_heat.m is written in Matlab and produces the energy demand profile of a set of ? identical homes. The input parameters to the code are: the interior temperature ???? [?], the thermostat constant ? [?], the cooling temperature difference ????? [?], the heating constant ?? [?/?], the cooling constant ??[?/?], the total time interval to be simulated ?[?], the total number of homes in the system ?, and a sample home ??[1,?], which temperature profile is displayed at the end of the computation. The code generates a set of random temperatures for each home in the range [????,????+?] and a random status for its thermostat (on/off) at ?=0. Then the heating/cooling cycles for each home are computed, and, based on that data, the current (E) and cumulative (P) power demand are evaluated. COMP32412 ? Your task is to upgrade this code to be able to handle the two strategies described above for reducing the power demand. COMP32412 ? Once you completed this task, you should compare the current and the cumulative power demand with the original case when no power management is introduced. Consider the time interval of 24h, and experiment with the values of ?,?????,??, and ?? (within reasonable and realistic bounds – for example, ??[2,5][?], ?? should be considerably larger than ?? (because of the insulation efficiency of a modern home). COMP32412 ? Report several different scenarios and discuss the effects that changing the parameters have on the energy savings. How can the external temperature change be incorporated into the current model? COMP32412

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