An energy auditor proposes to replace the existing split-type and window-type air conditioners by an air-cooled chiller as one of the Energy Management Opportunity (EMO) in the energy audit report. According to the information provided in Table Q1, calculate the annual energy saving in kWh. (correct the answer to integer) (5 marks) Table Q1. Data for question 1(e) Number of window-type air-conditioner Cooling capacity of each window-type air-conditioner COP of each window-type air-conditioner Number of split-type air-conditioner Cooling capacity of each split-type air-conditioner COP of each split-type air-conditioner Number of air-cooled chiller COP of air-cooled chiller Annual operation hour 40 5 kW 2.8 20 9 kW 3.1 2 3.5 1,600