These calculations are based upon heat transfer area. kaori does not guarantee performance of the alternative heat exchangers. Many factors affect performance such as but not limited to: fluids, plate types and thermal case. You are also welcome to contact your local sales representative for further assistance. Please note that Configurator can not be used for 2-phase applications (e.g. evaporators or condensers). We invite all users to read our Configurator white paper to obtain more information on Configurator. Contact kaori