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6.2.2. Fuels and electricity

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6.2.4. Schedules

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6.2.3. Processes

6.2.3.1. Maintenance of Temperature and Start-up

still to be written.

6.2.3.2. Incoming flows

still to be written.

6.2.3.3. Outgoing flows

still to be written.

6.2.3.4. Process Schedules

For each process its schedule may be defined in one of the following ways:

6.2.3.4.1. Simple Schedule

With only four parameters it is possible to define the times of activity of a process. The effective hours of operation per day, the number of cycles per day, the duration of each cycle and the days of operation per year ar these parameters. As the first three are actually redundant, it is enough to enter two of them.
../_images/screenshot_simple_schedules.png

6.2.3.4.2. Detailed schedule

In a much more detailed fashion, the detailed schedule offers the definition of running times per week day and these weekly profiles may again be choosen for freely choosen periods within the year.

Choose the Detailed schedule checkbox and define a detailed schedule.

6.2.3.4.3. Fit to Data (EINSTEIN plus only):

Process schedules can be obtained automatically by fitting to monitoring data.

Choose the Fit Schedule to Data checkbox and define an appropriate set of monitoring data.

6.2.3.4.4. Selection of schedule type

To define a schedule for a process it first must be selected from the Process list on tab Process data in the Process data section of EINSTEIN.

../_images/TimeSchedules_1.png

6.2.3.4.5. Process Schedule Parameters

Additional global parameters for process scheduling are specified on the tab Operation in the Process data section of EINSTEIN. There are three global parameters for the schedule of a process:

  1. Startup time specifies the duration of the process startup phase.
  2. Inflow time specifies the duration of the process charging phase.
  3. Outflow time specifies the duration of the process discharging phase.
Phase \Delta t Process type
batch continuous
Operation [t_0,T]
Startup [t_0,t_0+\Delta t]
Inflow [t_0,t_0+\Delta t] n.a.
Outflow [T,T+\Delta t] n.a.
../_images/process-times.png