ENTERING DATA

After weather, space and HVAC system data has been gathered, it is entered into HAP. This is the third step in the design process. The procedure for entering data into HAP is presented below in a tutorial format.

1. Create a New Project

 (Optional) If you only wish to view this example rather than entering all the data yourself, you can use archive data for the example problem which is provided on the HAP CD. To use this archive file:

Run HAP. Use the New option on the Project Menu to create a new untitled project. Then choose the Retrieve option on the Project Menu. In the Retrieve window choose the archive file containing the HAP example problem and click the Open button. On the next window click the Retrieve button. Finally after data has been retrieved use the Save option on the Project Menu to save the project. Use the project name “Example Problem”.

Skip to step 3 below. =OR=

 If you will be entering example problem data yourself, choose New on the Project menu. This creates a new project. A project is the container which holds your data. The new project you create will contain data for the example problem.

 Then choose Save on the Project menu. Because you are saving the project for the first time, you will be asked to specify a name for the project. Use “Example Problem” as the project name. From here on, save the project periodically.

2. Enter Weather Data

 Click the “Weather” item in the tree view in the main program window. A “Weather Properties” item appears in the list view.

 Double click on the “Weather Properties” item in the list view. The Weather input window will appear.

 From the drop-down lists on the Weather window, choose data for United States / Illinois / Chicago IAP. Also select design cooling months of May through November, and specify daylight savings time from April 7 through October 26. Design parameter input data for the example problem is shown in Figure 3.2.

 When finished entering this data, press the OK button on the Weather input window to save the data and return to the main program window.

3. Enter Space Data

Entering space data is the most labor-intensive phase of data entry. By using the program’s “duplicate” feature input effort can be minimized. First enter data for the “D101- Typical Classroom” space:

 Click the “Space” item in the tree view in the main program window. Space information will appear in the list view.

 Double-click on the “<new default space>” item in the list view. The Space input window will appear.

 Enter data on the General tab of the space input window using data shown in Figure 3.8.

schedule. This can be done “on-the-fly” without leaving the space input window. Simply choose the “<create new schedule>” item in the schedule drop-down list. This will launch the schedule input window. Enter data for the appropriate schedule shown in Figure 3.5. If you are new to the Schedule window, make frequent use of the help features on this window to learn about the many ways in which schedule data can be entered. When finished, press the OK button to save the schedule and return to the space window. When you do this, the schedule you created will be assigned to the space automatically. For example, if you chose “<create a new schedule>” from the drop down list for overhead lighting schedule, the schedule you create will be assigned to overhead lighting automatically.

 Switch to the Walls, Windows, Doors tab on the space input window and enter the data shown in Figure 3.8. As you enter this data it will be necessary to create wall, window, door and external shade constructions. For example, while the desired exposure line in the table is highlighted, you can create the wall construction for that exposure by choosing the “<create a new wall>” item in the wall drop-down list. Similar procedures are used for creating window, door and external shade constructions. Wall, window and shade construction data is shown in Figures 3.3, 3.4, 3.6 and 3.7 respectively.

 Switch to the Roofs, Skylights tab on the space input window and enter the data shown in Figure 3.8. As you enter this data it will be necessary to create a roof construction. With the desired exposure row in the table highlighted, you can create a roof construction for that exposure by choosing the “<create a new roof>” item in the roof drop-down list. Roof construction data is shown in Figure 3.6.

 Switch to the Floors tab on the space input window and enter the data shown in Figure 3.8.  At this point, press the OK button to save data for space D101 and return to the main program

window.

D102 and D103 are identical to D101, so the next space we enter will be “D104 - Classroom”. The “duplicate” feature can be used to minimize input effort:

 Right-click the “D101 - Typical Classroom” space item in the list view portion of the main program window. On the pop-up menu that appears, select the “duplicate” option. A duplicate of “D101 - Typical Classroom” will be created, the space input window will be launched and data for the new space will be displayed. Because this new space is a copy of D101, we will only need to modify items which differ from D101.

 On the General tab of the space input window change the space name to “D104 - Classroom” and specify its floor area as shown in Figure 3.9.

 Switch to each of the other tabs on the space input window in succession and enter the data shown in Figure 3.9. Note that many of the default values for this space will not need to be changed since much of the space data is common among spaces. By making duplicates of successive spaces, the number of items which need to be modified will be minimized.

Chapter 3

System Design Example Problem

4. Enter Air System Data

 Click on the “System” item in the tree view in the main program window. System information will appear in the list view.

 Double-click on the “<new default system>” item in the list view. The System input window will appear.

 Enter data for the “VAV Rooftop” air system shown in Figure 3.18. If you are new to the air system window, make frequent use of the help button or the on-line help features (F1 key) to learn about operation of this window.

 As you enter data you will need to create a fan/thermostat schedule for the air system. This is done in a manner similar to creating schedules “on-the-fly” for spaces. In the Thermostats data view on the Zone Components tab, choose the “<create a new schedule>” item in the schedule drop-down list. This will launch the Schedule input window. Use this window to enter the fan/thermostat schedule data shown in Figure 3.5. Be sure to specify the schedule type as “fan/thermostat” instead of “fractional”. When finished, press the OK button to save the schedule and return to the air system window. The schedule will be assigned to the air system automatically.

 When finished entering air system data, press the OK button on the System window to save your data and return to the main program window.

At this point all input data has been entered and we’re ready to design the system. Procedures for generating system design reports will be discussed in Section 3.5.