METHOD FOR SELECTING HEAT MEDIUM OF USE-SIDE HEAT EXCHANGER DURING CONSTRUCTION OF AIR CONDITIONING SYSTEM

摘要

A method for selecting a heat medium of each use side heat exchanger in installing an air-conditioning system includes: a first step of determining power required for use side heat exchangers corresponding to a plurality of air-conditioned spaces; a second step of calculating a total refrigerant amount required when a refrigerant is circulated through all the use side heat exchangers having the determined power; a third step of calculating a refrigerant concentration when the total refrigerant amount leaks to each air-conditioned space using the refrigerant, for each air-conditioned space; a fourth step of determining the refrigerant concentration for each air-conditioned space exceeds a predetermined limit concentration; a fifth step of, when there are any air-conditioned spaces exceeding the limit concentration in the fourth step, selecting, as a nontoxic medium, the circulation heat medium of the use side heat exchanger installed in one of the air-conditioned spaces; and a sixth step of calculating a total refrigerant amount required when the refrigerant is circulated through all the use side heat exchangers other than the use side heat exchanger selected for the nontoxic medium, as the total refrigerant amount in the third step.