CAMEL+ Help Centre
  • General
  • Project
  • Schedules
  • Shading
  • Windows
  • Walls
  • Chillers Boilers & Circuits
  • Preconditioners
  • AHU
  • AHU Coil
  • Zones and rooms
  • External
  • Partitions
  • Internal
Yes. If you set up one or more chilled water sub-circuits, various FCUs can be connected to each and are still included in the chiller total. This can be managed on the Chiller, Boiler & Circuits Screen.
Outside Air can be entered in two places: either the AHU Screen, (if a fixed L/s or % of Supply Air is used) OR the Zone & Rooms Screen if L/s/person or/m², air changes or fixed L/s for each room is required.
Yes. If the ‘Direct to Room’ box is in the Outside Air section on the AHU Screen, then the Outside Air is supplied direct to the room. If a heat exchanger or preconditioner is associated with the AHU, the Outside Air will pass through this (but not the AHU coil) before being supplied to the rooms.
Yes. This calculation option can be selected on the AHU Screen, however, it cannot be used with VAV systems as the calculation can give unusual results and is not well defined in AS1668.2. It is common to do two runs of CAMEL⁺ – one with AS1668.2 compartment formula and one without, to demonstrate what the calculation is achieving. Note it will only work if each compartment (as per AS1668.2) is a separate room on the AHU in CAMEL⁺.
Red crosses mean that invalid data has been entered into one or more cells on the associated screen. If you click on the red cross it will take you to the screen where there is an error.
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By clicking the Configuration button on the left menu pane you can set the default location, plant operating times, room design conditions and default settings for the storage mass calculator.
Click the Shadow button on the left menu pane. You can then select the ‘Room’ and ‘Surface Number” required and the time and month. You can also run an animation, so it steps through the months at a set time of day, or steps through the hours of the day for a set month.
On the Project Screen, there is a Notes / Comments field. Any comments entered here will appear on the project details output. Alternatively, you can export the selected results to a word document that will allow you to add any comments as required.
Primarily locations throughout Australia and New Zealand, but also Papua New Guinea, the Pacific Islands, China and a number of locations in South East Asia. The weather location is selected on the Project Screen. All locations are also shown on a map, accessed via the Select on Map button on the Project Screen.
Comfort conditions are based on the 3 pm design temperature which is exceeded on 10 days/year (including one standard deviation) and is typically used for comfort applications. Critical conditions are based on the 3 pm design temperature exceeded once in two years in that month. For example, for 10 years’ worth of weather data it would be the Jan temp exceeded 5 times, and so on for each month. Critical conditions are generally used in applications where more stringent design requirements are warranted.
The locations where weather data is measured change over time. The before 1990 data set was in an earlier version of Camel, whereas the after 1990 data was updated based on weather data ranging from 1990-2012/13. The majority of locations are in both, but some are only in one data set. Many locations have also shifted the measuring point from the town centre (typically the post office) to the local airport, so this also has an effect on the temperatures recorded.
To use design conditions not natively available in CAMEL⁺, select the User Defined Monthly option in the Location dropdown list. Once selected, an Add New button appears, which will open a new form where you can enter the ASHRAE or other monthly weather data. This can then be saved for use as a new preset in future projects. Alternatively, the simplified Enter 3pm Summer option is available, which can generate monthly design temperatures based on a single Summer Design °CDB and °CWB using an inputted Yearly Range °C.
Selecting the User Defined Monthly option from the Location dropdown list, click the Add New button to create a new design condition. The Camel Design Condition option allows you to copy the data from an existing location, and from there you can manually change any entries as required. For example, you could apply +0.5 for all CDB, and then save the design condition with a new name (eg. Sydney +0.5).
As an example, let’s assume that the North wall in your project is facing 15° west of North, i.e you’ve entered an angle of 345° for the Building Rotation on the Project Screen. The input data for this external wall would then just be entered as Exposure N or 0° on the External Screen.
In the results, on the room load chart for that room, the wall should show exposure of 345° (0° plus 345°). Correspondingly, E would show 75°, S would show 165° and W would show 255°.
The Shading Effectiveness options are only used to calculate equivalent shading dimensions for use in the NCC 2016 Section J Glazing Calculator. As it can slow down the calculations significantly, it should normally be left blank.
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For many projects, setting up schedules may not be necessary, because when calculating peak loads it is common to assume all lights and equipment are running at 100%, and all people are in the space during the nominated operating hours. In CAMEL⁺ this is the default if schedules are not entered for people, lights and equipment. If loads are not 100% all the time, then schedules should be used.
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The diagrams are indicative only of the shading scheme since the actual shades are a function of the window or wall dimensions (height and width) to which the shading scheme is applied later on the external tab. One shading scheme could and often does, have different appearances as it is applied to several (different sized) windows and walls. The shading schemes are displayed to scale on the external surfaces on which they are used. To see the actual shadows on the surface – view the surface using shadow (button) on the front screen.
All overhangs and reveals (fins) are by default perpendicular to the surface. Angles can be incorporated using the ‘ROTATIONS ’ at the bottom of the Shading tab.
Window and Wall shading on the Shading tab page has a factor for overhangs, drop panels and L & R Reveals (fins). The factor 0 – 1.0 represents the fraction of Radiation which passes through the shade. So, if shade cloth is 50% set the factor to 0.5. [Totally transparent is 1.0 and opaque is 0 or blank]
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No. It is only the top 7 rows of the data that are used in the calculations and must therefore be completed. The lower 7 rows are simply an aid (based on selecting a glass number by right clicking on the glass number line) to obtaining this data.
If the Glass Number is entered or selected in row 9:

a. and the ‘U Value for CAMEL⁺’ cell is right clicked, it then replaces the final U-Value in row 4. If a Frame U-Value Correction has also been entered in row 15, then the ‘U-Value for CAMEL⁺’ will be multiplied by this factor before it is input as the final U-Value on row 4.

2. and the ‘Shade Coeff. For CAMEL⁺’ is right clicked, it the replaces the Shade Factor on row 5. If the ‘Internal Shading’ in row 7 is entered as YES, the Int Solar Atten Coeff can be entered in row 14, and will be multiplied with the ‘Shade Coeff. For CAMEL⁺’ before it is input as the final Shade Factor in row 5.
Shade Factor the overall shade coefficient for the glass only, modified by any internal curtains or blinds. It is defined as the ratio of the Solar Heat Gain for the actual window glass, to Solar Heat Gain for reference glass (taken as 3mm clear glass). Since the SHGC for 3mm clear glass is approximately 0.87, the shade coefficient for glass is often taken as SHGC divided by 0.87. Having said this, different sources report that the true value could be anywhere from 0.86 – 0.89, so engineering discretion is advised when using this conversion.
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CAMEL⁺ includes some 130 wall types and some 87 roof types. If your walls and roofs can be represented by these, then there is no need to enter the wall or roof types on the Walls Screen. Instead you will be able to enter the reference number directly into the External Screen for the relevant walls or roofs. However, if you want walls or roofs of different construction or insulation values, then they need to be entered on the Walls Screen and then referenced with your custom Wall Type reference on the external tab. Note the U-Value includes the inside and outside film coefficients.
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On the Chillers, Boilers and Circuits Screen, chiller diversity factors for people, lights and room equipment (sensible and latent) can be entered from 0.25-1.0. This will not affect the AHU peak loads, but will reduce the total chiller load components for people, lights and equipment.
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If the heat exchanger only serves one AHU then it may instead be entered on the AHU tab page. If it serves multiple AHUs, then it should be entered on the Preconditioners Screen, and then referenced on each connected AHU.
If the Desiccant Humidity Control Unit only serves one AHU then it may be entered on the AHU Screen. If it serves multiple AHUs, then it should be entered on the Preconditioners Screen, and then referenced on each connected AHU
This is a current limitation in the CAMEL⁺ calculation engine, but since cooling and heating calculations are done independently in CAMEL⁺, there is a workaround: You can set the cooling preconditioner leaving air temperature to the correct value and the heating just below this. The cooling results will be correct but not the heating. Then do another run where you set the heating correctly and the cooling above this, producing correct heating results.
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VRF indoor units are entered as AHUs and each must be connected to a VRF outdoor unit circuit. The results then include the total load on each outdoor unit.
The default values for the room design conditions are set by clicking the Configuration button in the left menu pane on the Summary Screen. Note that these only apply when starting a new data set. If you wish to change the room design conditions for AHUs that have already been entered in, use the ‘Show All’ mode on the AHU Screen, change the first value then use the fill down function to apply it to all rooms (only available in CAMEL⁺).
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Whatever is most appropriate and you understand. In either case, it is simply a means to estimate the required leaving coil conditions, and these need to be checked for practicality and compared with possible unit capabilities. This may result in the need to adjust these values in subsequent runs.
Fan Heat Gains do add a load to the coil but in many smaller units – particularly those that are MEPS rated – the rating has already been discounted by the fan heat, so act accordingly.
Safety factors are to allow for the uncertainty in the data entered including, variation in weather data, estimates of number of people, equipment in use, wall U-values, wall colours etc. It is the designer’s responsibility to ensure that he has a realistic and honest estimate. CAMEL+ simply adds together the Load from the entered data then applies the entered safety factors.
Yes. On the AHU Coil Screen, the Load Chart Printout for each room on that AHU can be set to the Room Peak, Zone Peak or to a set time and month. (The user must pick the time and month – typically the time of the AHU peak.)
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The Ceiling Height parameter is only used in CAMEL⁺ to calculate internal volumes for air change volumes, so the ceiling height should be the height of the occupied space (with air movement) where appropriate.
On the Zones and Rooms Screen, the Storage Mass can be entered directly by the user. Alternatively, it can be calculated by right-clicking in the Storage Mass Calc cell. Note that the form which then appears will only have the required data filled in (for walls, floors, roofs etc.) after the external and partitions tabs have been filled in. Therefore the storage mass calculation should be done after the rest of the data is completed.
This allows for air extraction from the room (e.g. via a fume cupboard, exhaust hood or general exhaust), provided that the exhaust volume does not exceed the Outside Air. This will also reduce the Return Air exhausted at a Heat Exchanger, which may adversely affect the efficiency of the Heat Exchanger.
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Shading schemes entered on the Shading Screen can be applied to either windows, walls, or both. These can include any combination of overhangs, drops and left and right side reveals. The other means of adding shading is via the Adjacent Shading section on the External Screen, which allows you to account for shading from an adjacent building or structure.
Can a wall (or roof) have more than one window type?
Yes. A roof or external wall can have many different window types. Each extra window type is added by clicking the “Add Window” button, which adds an additional column (or row, if in Show All mode) of window data for that wall. Note that each external wall or roof must have a window added before a second window can be added to that surface.
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A P flag with a Value of 1 is equal to the ambient temperature, so by entering P 0.75 you are saying that the adjacent space is closer to the ambient temperature than the conditioned room temperature.
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The current options are based on the 3rd Edition of the AIRAH DA09 Application Manual Table 11 and are used when it comes to considering storage load factors. We will be updating this in CAMEL⁺ to include an option for LED lights when the upcoming DA09 4th Edition is released.
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The user interface for HYENA+ is much cleaner and more user friendly than the UI used for the original HYENA program. This makes the experience more enjoyable, easy, and less taxing when using the program for long periods of time. HYENA is an excellent tool to have and its now web-based nature with HYENA+ has allowed it to become even more beneficial.

– M. Cummings

It has always been a pleasure dealing with ACADS-BSG team due to their helpful nature and quick response time to any inquiries and technical issues. Camel\Hyena works out of the box and install time is in seconds, I cannot recommend any other company that provides better customer service other than Catherine and her team.

– Marvin D

Catherine and the team at ACADS provide customer service of the highest standards always offering the best solutions for our business with fast response times. I would highly recommend ACADS-BSG.

– Amy

The ACADS BSG suite of software has been used by VOS Group for 30 years. We as a company have grown as the software capabilities have changed with usability and technology. The support from head office has always been quick and accurate, with a resolve to overcome any obstacles. We have always found the outputs to be accurate and reliable and a good basis for good engineering design.

– Shayne C

Moving to a cloud based platform has improved the overall performance of the software. [being able to log in from any device] has improved my overall productivity as I only need to carry my smart phone or a tablet, and I can do my job remotely. Tools and functions are clearly organised within the new interface reducing any confusion for a new user. Copy+ Paste option saves a lot of time for Engineers like me. It just works like an Excel Sheet, where you can copy items and paste them somewhere else. It saves a lot of time especially if you are working on a single project and you want to do multiple calculations.

[HYENA+] allows me to quickly switch from one calculation to another without losing any data. This has reduced the overall lead time in doing calculations. I am sure [HYENA+] will have a positive impact on the Fire Industry.

– Ahkil M