BHEDesigner 8: the web-app
This tool carries out the sizing (overall length calculation) of the BHE field according to the "Ashrae-Tp8" algorithm. The nomenclature of symbols is shown at the bottom of the page.
Regarding the input related to the number of boreholes (N, M and hence Ntot), it is advisable to refer to the precalculatedvalue available in cell Ntot,suggested (Red Cell). In such a way the iterative calculation performed by this app can be fast in convergence.
The correct functioning of the calculation code necessarily depends on the correctness and reasonableness of the input values (boxes in yellow).