METHOD FOR CALCULATING INSTALLATION PERFORMANCE OF REVERSE OSMOSIS MEMBRANE, APPARATUS FOR CALCULATING INSTALLATION PERFORMANCE OF REVERSE OSMOSIS MEMBRANE, AND ITS PROGRAM

PROBLEM TO BE SOLVED: To enable an easy selection of layout or operation requirements of a constitution of a suitable membrane matching with purposes at the development and design phase of a reverse osmosis membrane installation.SOLUTION: An apparatus 10 for calculating the installation performance of a reverse osmosis membrane comprises an input conditioning part 110, a list generating part 120 of calculation requirements, a calculation part 130 of operation performance, and a calculation result display part 140. The input conditioning part 110 displays an input conditioning screen to set input requirements necessary for the calculation of installation performance of a reverse osmosis membrane on a display device 400; the list generating part 120 of calculation requirements generates data of calculation requirements for a plurality of cases as a list on the basis of the input requirements set via the input conditioning screen; the calculation part 130 of operation performance executes the calculation of operation performance with respect to the calculation requirements by repetition for a plurality of cases while sequentially taking out the calculation requirements for one case from the calculation requirement list; and the calculation result display part 140 displays a list of calculation results for a plurality of cases acquired by the calculation of operation performance on the display device 400.