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PhD Thesis - Energy Systems Research Unit - University of Strathclyde

PhD Thesis - Energy Systems Research Unit - University of Strathclyde

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As it would be too confusing to show the pr<strong>of</strong>ile <strong>of</strong> use graphs, for each load<br />

following supply being considered, all in the one graph, a button has been<br />

placed above this graph area to allow the different graphs to be ‘toggled’<br />

between. The name <strong>of</strong> each load following supply appears above the relevant<br />

graph, as shown in Figures 4.10 and 4.11, and the type <strong>of</strong> graphical information<br />

given depends on the type <strong>of</strong> plant used (see Chapter 5). Other relevant process<br />

information, including the number <strong>of</strong> engines used where multiple sets have<br />

been defined, is given in the Auxiliary Supply Performance box above the<br />

graphs. The engine being used in this example has been set to follow both the<br />

electricity and heat demand.<br />

The fuel storage graphs may be seen in the first graph area on the matching<br />

procedure window (see Figure 4.12), along with the energy demand and supply<br />

graphs, and can be ‘toggled’ between using the button above. From these it can<br />

be seen whether the production rate is appropriate, and the required size <strong>of</strong><br />

storage tank can be ascertained, as shown in Figure 4.13. If the excess is<br />

substantial, and each production period increases it (as can be seen in the second<br />

graph), it would be wise to decrease the amount being produced. If a fuel is<br />

available, and none has been used, the production from one timestep is still<br />

added to the next to produce a storage pr<strong>of</strong>ile.<br />

The total amount <strong>of</strong> each fuel used is given in the Match Results box, and,<br />

again, the different fuel types can be ‘toggled’ between. This is useful when the<br />

same fuel is being used in different plants, and can be an important<br />

consideration when comparing different scenarios. If seasonal representative<br />

time periods are being used, an estimated annual overall consumption for each<br />

fuel is also given below this.<br />

97

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