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At this moment, the Hysopt software only supports pipe sizing based on maximum velocity, maximum pressure drop per meter or target pressure drop per meter. However, in the Cibse guide, the CIBSE CP1 recommends pipe sizing is done based on typical (or target) velocity which is currently not supported by the Hysopt software.
As a workaround to size pipes according to the recommendations from CIBSE CP1 (2020), we have created excel sheets to design pipes based on the max velocity method, providing very similar results as with the typical velocity calculation presented in the CIBSE CP1 (2020) guide.
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