I. Introduction
Renewable energy such as solar can reduce the need to burn fossil fuels and in turn reduce the amount of greenhouse gasses being released into the atmosphere. To promote the use of solar energy, new innovative solutions must be created in both engineering and policy. Air conditioners are becoming more common and are a major strain on energy demands especially in tropical climate countries like Indonesia where air conditioning is used all year round. Up to 50% of buildings energy can be from air conditioning in subtropical regions [1].