Energy-Efficient Cooling Systems for Buildings: an Analysis of Solutions Using the Example of the Equatorial Climate

The article is devoted to selecting the most efficient cooling system for public buildings in an equatorial climate, using Colombia as an example. Both traditional energy sources and renewable sources are considered. Special attention is paid to solar energy use. Equatorial countries have abundant solar resources (4.5 – 6 kWh / m2 per day), but most electricity is still generated by thermal power stations, which has a negative impact on the environment. The main goal of the study is to find methods to reduce energy use and operating costs for refrigeration systems in air conditioning systems. After economic analysis, an integrated system including an absorption chiller and solar thermal installation was found to have a 40 percent increase in capital expenditure compared to traditional chillers. However, absorption chillers have a significant 78 percent reduction in energy use compared to their traditional counterparts. This is a significant improvement, confirming the effectiveness of this system in minimizing energy costs.