Currently there are many articles on how to use the Trace 700 software online, but if you do not understand this software, it is very difficult to enter the correct parameters. In this article, I go into more depth and detail to make it easier for you when you first get acquainted with this software.
- Calculate the cold load for air conditioning projects.
- Calculate and analyze energy consumption and costly costs for the operation of the works as well as calculate the economic parameters of the works. The software is built based on ASHRAE standard
- The resulting parameter table outputs many parameters to suit the needs of the user to easily choose the equipment to suit each person's requirements.
- The cost calculation section gives related to the density of building users according to a typical schedule of the day.
- Can easily create many different options to compare the economics and techniques of solutions so that users can easily choose the optimal plan thanks to the analytical calculation results obtained from this software.
II. Instructions for installing and importing weather library for the software
After completing the installation.
Go to file / customized settings… /
- In the Units select "metric"
- In the item Default map choose "Word"
Enter the library for the software.
You must have a weather library file named “library.exp” and the steps to install the library are as follows:
- Open the program
- Select open / Trace700.trc
- Go to libraries / weather… / then turn off the dialog box "Weather Library - General Information"
- In the dialog box "Library / Template Editors" select "file / import /" then find the file library.exp / ok
Open the software up, you follow the steps from top to bottom to complete the data entry process for this software.
- The first step:
Enter information for the project being calculated for easy management later.
- Step 2:
Select weather data corresponding to the project, weather data in Vietnam, you must update it based on international weather data files.
- Step 3:
Enter parameters for Template section. This is one of the differences of the Trace 700 compared to HAP or Heat Load, thanks to this feature you can significantly shorten the input time for large projects with many small rooms in it, when changing parameters. It's also much easier to manage with this feature.
- Step 4: Create separate rooms: This section gives detailed parameters for each room such as room area, walls, partitions (partitions), glass, construction direction ...
- Step 5: Choosing the wind system: In this section, you need to first determine what kind of system your project is suitable for: FCU, AHU, Terminal Reheat, VAV Box ...
- Step 6: Put rooms into the appropriate wind distribution system: this step is simply drag and release rooms into the systems created in the previous step.
After these 6 steps, data entry for Trace 700 software has been completed. The next 3 steps below are for economical calculation and calculation of power consumption, these are 2 separate parts of the software. Right after entering the data of these first 6 steps, you can go down to the last step (step number 10) to run the software without inputting data for the next 3 steps (steps 7,8,9). *
Instructions for entering weather data into Trace 700 software (step 2):
Now we will go step by step from top to bottom
Step 1: Enter information for the project
Step 2: You look at the picture above to follow
Step 3: Create Template.
In this software, Template is also a strength of it, because with already created Templates, the fact that you just need to assign any room with properties for each created Template will greatly shorten a lot of time and errors for you. during the software data entry. Or when you need to adjust the parameters for about 100 rooms with the feature of the office changing from 24 to 26 degrees C, for example, you only need to switch once in the Template and automatically the other 100 offices are using Office Template. that will also convert so that we don't need to switch hands up to 100 times for these rooms.
In this Template section divided into 4 main parameter areas
3.1. Internal Load:
Will include heat from people, lights, auxiliary equipment (such as computers, printers, engines, heat from machines ...)
With these heat sources, in the software we are available ready-made models according to Ashrae standards, we can either use these parts or can completely modify to suit the preferences of the importer. Whether.
The amount of people in the cooling space, the amount of human heat (visible heat and latent heat). You can select a ready-made space type in Type. Or import from the Ashrae standard.
Are machinery equipment accompanying people used in the air-conditioned space such as computers, phones, ... ... You can choose many different units such as: m2 / equipment, equipment / person, or how many devices (if specific)
First of all, it is necessary to select the correct type of lamp used in the cooling space of the Type section:
The commonly used lamps commonly used in air-conditioned spaces in Vietnam are Recessed fluorescent - not vented (without ventilation holes) and the 80% radiated heat is in the air-conditioning space, the remaining 20% is in the ceiling.
3.1.4. Miscellaneous loads
The heat is radiated by other miscellaneous devices such as printers, office equipment ....
- In the section Creates room more details on Workstation and Miscellaneous loads
3.2. AirFlow of Template:
3.2.1. Main Cooling Supply Value & Units:
Usually this item we leave blank and the software will calculate to give us the amount of the air volume needed. However, we can manually enter according to our requirements depending on the space we calculate the load.
For the pharmacy, this is where the standard parameter of the lowest amount of Air Changes of that space (probably 20 air chages / hr). The rest of the parameters are unusual, Trace is not necessary. Heating zones are not necessary because in Vietnam only focuses on cooling.
You can enter values in units: number of air exchanges / hour, cfm / sq ft, L / s / sq m, person / cfm, or L / s / person. This is the minimum amount of air flow to be supplied to an air-conditioning space. If the calculated value of the software is less than the required flow value, choose the minimum air flow rate, and vice versa.
This is the amount of fresh air to be supplied to the space to be cooled.
Remember that the amount of air you specify here can be entered according to reality or standard, depending on the choice of units. (May be 7.5l / s / person for normal office space. ).
Human ventilation is available if you select “Yes” to apply ASHRAE Std 62.1-2004 on the Room tab of the Create Room. This value should be used only when determining ventilation requirements that comply with ASHRAE 62.1-2004.
The amount of air leaking from the outside into the room through the windows, through the construction structure and through the main door. This is only calculated carefully for the Pharmaceutical factory, while the space is normally left blank.
3.2.4. Auxiliary supply:
Auxiliary supply air flow. Usually you should let the software calculate these values.
3.2.5. Distribute the cooling air to each area effectively (Ez CLG).
This value is not required in calculating refrigerant capacity.
3.2.6. Room exhaust:
It is understood as the amount of air emitted from the room into the atmosphere. Typical examples are bathroom, laboratory, and kitchen exhaust
So this is not necessary in the calculation
3.2.7. VAV minimum:
The default for this item is dependent on the selected system type and is read from the System Type Library. For most types of systems the default is 0 % of the design cooling room airflow, but for some types of systems (BPVRH and VRH) the default is 30 %.
You should leave this item as default if the terminal box room for the System Type is constant volume.
3.3. Thermostat template
This section specifies the temperature parameters to be set for the design in the room. In this case, we only pay attention to the Cooling Dry Bulb, the Heating Dry Bulb and the Relative Humidity.
In this you set up the structure for the project as:
- Structure of wall type, how thick, what is the material .. Similar to floor structure, roof structure, partitions between rooms in the cooling zone
- Glass type used for windows, doors to get sunlight, doors
- Height of wall, height of floors, height of false ceiling (Plenum).
The values for the texture and glass in the image above are software defaults
The textures in the software are available in the library, but it is completely possible to create new types of materials to take into the calculation if the software does not have parameters of the actual materials.
3.5. Room Template
In this part, it is just the place to summarize the 4 Templates that you created before. In this section, it is divided according to each characteristic of the room in the building. So before you want to calculate the load for the project, you need to consider the drawing to decide how many types of properties this project has or what is the room type to be able to decide how many Templates are enough. Maybe while creating the details of the room (step 4), if we see the lack of Template, go back to step 3 to create more Template.
4.0. Create Room:
Step 4 is to create Detail Rooms for the calculation. After step 3 is creating Template, you need to go to step 4 to know how the Template works.
When you open the Create section, the software will automatically create a new room for you, we can rename this room as you like. Then notice that the parameters of the room such as People, Lighting ... are initially 0 values, but you notice that the upper left hand side has the Template box, just specify which room to use the newly created Template in In the third step, all the parameters declared in the Template are updated in this Room, we do not take time to re-declare, this means extremely important when the work has hundreds of rooms. and design parameters must change continuously, just go to the Template in step 3 to change immediately the rooms using the Template will automatically jump to the new value. However, we can still change the parameters in step 4- Room, but this value will change to black and still not affect the opposite of step number 3- Create Template.
- Floor parameters: There are Length and Width sections to enter the length and width of the room, but the software only cares about the total area, so there is a simpler way for rooms without a rectangular shape, which is to sum area (by measuring on CAD drawing it is simple) then give 1 side 1, the other side to total the measured area.
- Roof: If it is the top floor, there will be roof, if the roof is flat, choose Equal Floor.
- Wall: measure on the CAD drawing of the length of the wall (which is the wall edges in direct contact with the outside environment), enter the length in the Wall box. Direction; is the direction of the wall declared, this direction is measured in the standard direction (0) is the north.
+ North direction 0 degrees
+ East direction 90 degrees
+ South direction 180 degrees
+ West direction 270 degrees
Determine the angle from the north / south axis:
Wall 1 facing northeast = 45 °
Wall 2 facing southwest = 225 °
%Glass: Roughly calculate the percentage of glass occupying the declared wall area. Or how much glass (Qty) corresponds to length size (length) and height (height)
The parameters in the internal loads and airflows tabs will automatically update when you select the template in the Templates section.
- With the tabs Room, Roofs, Walls, Int Loads, Air Flow: almost declare the parameters done in the Template front. However, this section will be useful if a room has its own unique characteristics, then we can fix it directly in that room without affecting the Template created in front of it.
- Partition: is the partition between rooms when the wall is not in direct contact with the sun and there is a temperature difference between two rooms, such as an elevator contact room, a buffer room.
Download software 700: https://secufiles.com/F1e/Trace_700_Setup.rar
Download user manuals for 700 people: