We can start exercise four by saving exercise three and naming it exercise four. You should be familiar with this by now. The first thing we're going to do is create the security lighting schedule. As we know, the stinking kids have no respect these days and keep destroying property. Keep it at utilization schedule, select new schedule, give it the name ‘security lighting,’ keeping it at reduced year, since there’s no difference on any of the weekdays. Remember, a reduced year schedule will work for any file, whether it's run in full year weather, or reduced year. However, a full year schedule will not quite work on a reduced year simulation.
We're going to start by creating a new definition, leaving at cooling design to cooling design, midnight to midnight, 100%. Then, we're going to make another definition where it's automatically going to fill in weekday to Sunday. Midnight to 6:00 a.m. is 50%, 6:00 a.m. to 6:00 p.m. is 0%, and 6:00 p.m. to 12:00 a.m. is 100%. The order of day types in TRACE 700 tells us that heating design is last, so we know when we click new definition that heating design is going to be the last A type. We also know that heating design is midnight to midnight, 0%. To save ourselves a few mouse clicks, we're going to copy the cooling design schedule and change the 100 to 0. Now we can save our security lighting schedule. Close this, we don’t have to leave the library, go to libraries and select base utilities.
Create a new base utility calling it ‘security lights.’ Give it in an hourly demand of five kilowatts. We can also put in our comments. Set the schedule to security lighting and leave the energy type as electricity. Note that there are several energy types we can select. There’s even a domestic hot water temperature for entering and leaving. That field will be enabled when we change the unit to units to units of GPM. The reason is that it can calculate the delta t across this field, knowing the flow right, and can convert that into an energy rate. And then it can burn whatever type of energy it needs. That’s just an additional detail, FYI.
Now that this base utility is completed, let’s save it and close out. Close the library and go back into alternatives one and two. Since alternative two is using alternative one at the moment, we can add the base utility miscellaneous accessory to alternative one, set security lights, leaving the inputs as it. Alternatively, you could have selected parking lot lights, knowing that the parking lot lights use electricity, overriding the hourly demand, and overriding the schedule. This would accomplish the exact same thing as setting security lighting to the type. We can apply this and close.