Product turnover (Total Product introduced into the Coldroom in the specified (time) cycle can be selected from a drop down menu in commonly used terms of kilograms per cubic metre of space. Typical turnover rates are listed on the menu and the option exists to enter a different rate by selecting 'Other'; when you will be prompted to enter a figure from 0* to 500 kg/m³. Alternatively, turnover can be entered as a total weight (in kilograms) for the room. Program logic prevents entry of an impractical turnover. For this reason, if Coldroom dimensions are changed after turnover has been entered then the entered turnover will be deleted and you will be prompted to enter turnover again. The risk of a 'Paradox' (computing with physically impossible conditions) is thus avoided.
* 0 product turnover is not as illogical as it appears. The input error trap limit (fixed and not dynamic) was originally set at 2 kg per cubic metre of room volume. However this frustrated attempts at adding relatively low turnover product items such as packaging, pallets and stillages etc. Items which might have had only an insignificant effect on the total product load for smaller cold rooms but which are far more important for large distribution centres for example. Naturally negative values cannot be entered.
The above example where although the principal product load might be attributed to wine, calculation accuracy would be enhanced by simultaneous calculation of the load for the bottles in which the wine is contained, the cartons in which the bottles are contained and finally the pallets or stillages on which the wine cartons are placed. There are of course hundreds more product storage situations where this applies.
Although probably not making much difference for a 1,000 cubic metre cold store, experience has shown this calculation enhancement becomes much more important in examples of super sized distribution centres of 40,000 cubic metres, 80,000 cubic metres and more recently some of even more than 120,000 cubic metres.