How to calculate the energy consumption index of the three a review

Three A review of energy consumption refers to a general hospital through the research to give a variety of energy consumption, HVAC accounted for 65%, lighting accounted for 9%, living hot and cold water 8%, medical equipment accounted for 10%, elevators accounted for 2%, and others accounted for 6%. A specialized hospital HVAC accounted for 70%, lighting accounted for 4%, domestic hot water accounted for 11%, and others accounted for 15%. The hospital HVAC system, lighting consumes electricity, various medical equipment, electric water boilers and elevators, and other integrated service systems consume electricity. Gas is consumed for heating, domestic hot water, processes and cooking.