Project Info

The Project Info command is used to set the main information for the project used during load calculations.

To the project information, go to

DM HVAC->Building Definition->Project Info

Project Information Dialog Box

Building Definition--Project Information dialog box

Project Name: The name of the project.

City: The city where the project is located. Changing the value in this field does not change any of the other location dependant values in the dialog box. The Select City button will set this value based upon the chosen city.

Select City: Press this button to select the city where the project is located. When a city is selected, the City, Latitude, Elevation, and Outside Air Temperature values are set. See the City Definitions section for more information on setting city-related values.

Latitude: The latitude where the project is located. Choose the latitude closest to the actual location of the city. Only north latitudes are available. The Select City button will set this value based upon the chosen city.

Elevation: The elevation where the project is located. The Select City button will set this value based upon the chosen city.

Floor Heat Loss Coefficient: The heat loss coefficient of the floor. See Table 16 in the Residential Cooling and Heating Load Calculations chapter of ASHRAE Fundamentals Handbook. This value is used to calculate the heat loss through an unheated concrete slab floor.

Select Floor Heat Loss Coefficient: Press this button to set the Floor Heat Loss Coefficient based upon Table 16 in the Residential Cooling and Heating Load Calculations chapter of ASHRAE Fundamentals Handbook.

Ventilation Calculation Method: The method used to calculate the ventilation required in zones. Setting this value does not change the ventilation rates in rooms. Those values need to be properly specified in the Room Project Schedule.

Minimum: No adjustment is made to the ventilation rate in the zones. The ventilation is strictly the sum of the ventilation in the rooms that make up the zone.
2006 International Mechanical Code: The ventilation rate is adjusted based upon 2006 International Mechanical Code.
2009 International Mechanical Code: The ventilation rate is adjusted based upon 2009 International Mechanical Code.
ASHRAE 62.1-2004: The ventilation rate is adjusted based upon ASHRAE 62.1-2004.

Allow Fractional People: Whether or not fractional people are used when calculating loads. When not checked, the number of people in a room is rounded up to the nearest whole person.

Print System Loads for Rooms: Whether or not system loads will be printed for rooms. This value can also be set when printing the loads. See the Print Load Calculations section for more information.

Edit Default Zone Information: Press this button to edit the top zone in the project. The top zone will be opened in the Zone List command. If multiple top zones exist in the project, the first one that was created will be selected. The top zone in a project sets default values for many load calculation settings. Changes to the top zone impact the whole project unless other zones and rooms specifically override the zone settings.

Safety Factors

Heating Safety Factor--Room (%): A safety factor for heating load values in rooms. All the room heating loads are increased by this amount.

Heating Safety Factor--Ventilation (%): A safety factor for heating ventilation loads in the project. The heating ventilation loads are increased by this amount.

Cooling Safety Factor--Room (%): A safety factor for cooling load values in rooms. All the room cooling loads are increased by this amount.

Cooling Safety Factor--Ventilation (%): A safety factor for cooling ventilation loads in the project. The cooling ventilation loads are increased by this amount.

Outside Air Temperatures

OSA Low Temperature Dry Bulb: The outside air temperature on the coldest night of the year. The Select City button will set this value based upon the chosen city.

OSA Daily Range: The outside air temperature range used to adjust the temperature when calculating cooling loads. The Select City button will set this value based upon the chosen city.

January: Whether or not cooling loads are calculated for the month of January. Calculating loads in more months allows you to find peaks that happen outside of the normal summer months. Calculating loads in fewer months is faster.

February: Whether or not cooling loads are calculated for the month of February. Calculating loads in more months allows you to find peaks that happen outside of the normal summer months. Calculating loads in fewer months is faster.

March: Whether or not cooling loads are calculated for the month of March. Calculating loads in more months allows you to find peaks that happen outside of the normal summer months. Calculating loads in fewer months is faster.

April: Whether or not cooling loads are calculated for the month of April. Calculating loads in more months allows you to find peaks that happen outside of the normal summer months. Calculating loads in fewer months is faster.

May: Whether or not cooling loads are calculated for the month of May. Calculating loads in more months allows you to find peaks that happen outside of the normal summer months. Calculating loads in fewer months is faster.

June: Whether or not cooling loads are calculated for the month of June. Calculating loads in more months allows you to find peaks that happen outside of the normal summer months. Calculating loads in fewer months is faster.

July: Whether or not cooling loads are calculated for the month of July. Calculating loads in more months allows you to find peaks that happen outside of the normal summer months. Calculating loads in fewer months is faster.

August: Whether or not cooling loads are calculated for the month of August. Calculating loads in more months allows you to find peaks that happen outside of the normal summer months. Calculating loads in fewer months is faster.

September: Whether or not cooling loads are calculated for the month of September. Calculating loads in more months allows you to find peaks that happen outside of the normal summer months. Calculating loads in fewer months is faster.

October: Whether or not cooling loads are calculated for the month of October. Calculating loads in more months allows you to find peaks that happen outside of the normal summer months. Calculating loads in fewer months is faster.

November: Whether or not cooling loads are calculated for the month of November. Calculating loads in more months allows you to find peaks that happen outside of the normal summer months. Calculating loads in fewer months is faster.

December: Whether or not cooling loads are calculated for the month of December. Calculating loads in more months allows you to find peaks that happen outside of the normal summer months. Calculating loads in fewer months is faster.

OSA High Dry: The outside air dry-bulb temperature for the specified month used when calculating cooling loads.. The Select City button will set this value based upon the chosen city.

OSA High Wet: The outside air wet-bulb temperature for the specified month used when calculating cooling loads.. The Select City button will set this value based upon the chosen city.


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