Determine the surface reserve

If a fixed capacity is given, the GPC offers the possibility to search for the so-called surface reserve. For this purpose, go to the input mask Input data and activate in the tab thermodynamics the calculation mode state fixed capacity (adjust surface reserve). After entering the capacity, the GPC will determine the required heat exchanger surface via the thermodynamic calculation of the heat transfer coefficient (U value). If you compare the calculated surface with the actual surface of the selected unit, you will obtain the value for the surface reserve that is in general higher than the performance reserve.

Share this page

If you can't find the answer you're looking for, e-mail: or contact your consultant at Güntner.

We continuously work towards improving the GPC program and our support so that you are always informed about the latest features and extensive program functionalities.

Your Güntner Software Team