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Using HAP 4.4 for System Design Loads

In document HAP44 Advanced Manual 10-08-08 (Page 169-172)

This is a quick tutorial on using HAP to estimate heating and cooling loads and design systems and plants. It is designed for readers who want a quick description of how to use the program and are already familiar with the design load process, HAP terminology and the basic principles of operating Windows programs.

When you start HAP, the main program window appears. At this point, the design process involves the following five steps to design systems and two additional steps to design plants:

1. Create a New Project

• Choose New on the Project menu. This creates a new project. A project is the container which holds your data

• Choose Save on the Project menu. You will be asked to name the project. From here on, save the project periodically.

2. Enter Weather Data·

• Click on 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 form will appear.

• Enter weather data.

• Press the OK button on the Weather input form to save the data and return to the main program window.

3. Enter Space Data

• Click on 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 form will appear.

• Enter data for your first space. While entering spaces, you may need to create schedules, walls, roofs, windows, doors or external shades. You can do this by choosing the "create new …" item in drop-down selection lists. For example, when entering overhead lighting data, you must choose a schedule. In the schedule drop-down list, choose the "create new schedule" item to create a schedule and automatically assign it to overhead lighting. Similar procedures are used for walls, roofs, windows, doors and external shades. An alternate approach is to create schedules, walls, roofs, windows, doors and external shading before entering space data.

• Press the OK button on the Space input form to save your data and return to the main program window.

• To enter another space, in the list view right-click on the name of the space you just created. The space pop-up menu appears.

• Choose the Duplicate option on the pop-up menu. A copy of the original space will be created and its input form will appear. This is a quick way of generating new spaces based on defaults from the previous space.

• Enter data for this new space.

• Press the OK button on the Space input form to save your data and return to the main program window. · Repeat the previous four steps to enter data for as many spaces as you need.

• 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 form will appear.

• Enter data for your first system. While entering the system, you will need to create a fan/thermostat schedule. You can do this by choosing the "create new schedule" item in the fan/thermostat schedule drop-down list. This will create a schedule and automatically assign it to your system. An alternate approach is to create this schedule before entering air system data.

• Press the OK button on the System input form to save your data and return to the main program window.

• To enter another system, in the list view right-click on the name of the system you just created. The system pop-up menu appears.

• Choose the Duplicate option on the pop-up menu. A copy of the original system will be created and its input form will appear. This is a quick way of generating new systems based on defaults from the previous system, if successive systems are similar. If they are not, use the "new default system" option to create each new system. · Enter data for this new system.

• Press the OK button on the System input form to save your data and return to the main program window.

• Repeat the previous four steps to enter data for as many systems as you need. 5. Generate System Design Reports

• Click on the "System" item in the tree view in the main program window. System information will appear in the list view.

• Select the systems for which you want reports.

• Choose the "Print/View Design Data" option on the Reports menu. • On the System Design Reports form, choose the desired reports. • To view the reports before printing, press the Preview button. • To print the reports directly, press the Print button.

• Before generating reports, HAP will check to see if system design calculations have been performed. If not, HAP automatically runs these calculations before generating the reports.

6. Enter Plant Data (if necessary)

• Click on the "Plant" item in the tree view in the main program window. Plant information will appear in the list view.

• Double-click on the "<new default plant>" item in the list view. The Plant input form will appear.

• Enter data for your first plant. For plant design load purposes users will only need to select from the first three plant types (Generic Chilled Water, Generic Hot Water, Generic

Steam). HAP users have additional options for specific types of chilled water, hot water and steam plants, but these require extra data not relevant to the design load calculation. Therefore, it is best to use the Generic plant types for design loads. Later Generic plants can be converted into specific plant types without loss of data.

• Press the OK button on the Plant input form to save your data and return to the main program window.

• To enter another plant, in the list view right-click on the name of the plant you just created. The plant pop-up menu appears.

• Choose the Duplicate option on the pop-up menu. A copy of the original plant will be created and its input form will appear. This is a quick way of generating new plants based on defaults from the previous plant, if successive plants are similar. If they are not similar, use the "new default plant" option to create each new plant.

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• Press the OK button on the Plant input form to save your data and return to the main program window.

• Repeat the previous four steps to enter data for as many plants as you need. 7. Generate Plant Design Reports (if necessary)

• Click on the "Plant" item in the tree view in the main program window. Plant information will appear in the list view.

• Select the plants for which you want reports.

• Choose the "Print/View Design Data" option on the Reports menu in the menu bar. • On the Plant Design Reports form, choose the desired reports.

• To view the reports before printing, press the Preview button. • To print the reports directly, press the Print button.

• Before generating reports, HAP will check to see if plant design calculations have been performed. If not, HAP automatically runs these calculations before generating the reports.

In document HAP44 Advanced Manual 10-08-08 (Page 169-172)