Common air conditioner operating system having billing calculation function

A common air conditioner operating system having a billing calculation function, comprising:

• at least one outdoor unit and a plurality of indoor units, at least one heat transfer unit configured to selectively transfer production heat in a cooling/heating state generated from the outdoor unit to the plurality of indoor units, and a system operating apparatus configured to entirely control the heat transfer unit, the outdoor unit and the indoor unit, and the heat transfer unit, and calculate billing corresponding to use energy of each indoor unit,
• wherein the system operating apparatus sums a first amount, which is obtained by multiplying a summed amount of a total heat production cost Cprod generated from the outdoor unit and a total heat transfer cost Ctrans generated from the heat transfer unit by a ratio of corresponding indoor unit supply heat si to a total supply heat S of all the indoor units, and heat supply costs cisupply of the corresponding indoor unit to calculate billing for each indoor unit, and performs billing calculation based on Equation
• C
• i
• =
• (
• C
• prod
• +
• C
• trans
• )
• ×
• s
• i
• S
• +
• c
• i
• supply
• ,
• and
• the total heat production cost Cprod is calculated by multiplying heat production energy generated to drive the outdoor unit by energy cost, the total heat transfer cost Ctrans is calculated by multiplying heat transfer energy generated to drive the heat transfer unit by the energy cost, and the heat supply cost cisupply is calculated by multiplying heat supply energy generated to drive the corresponding indoor unit by the energy cost.