Design of a variable refrigerant flow air conditioning system based on solar energy

Authors

Peralta, Juan

Delgado, Emerita

Abad, Jorge

Coello, Bryan

Arevalo, Danilo

Sosa, Ian

Flores, Marco

Abstract

The city of Guayaquil has registered an increase in environmental temperature with 34 ° C and maximum of 38 ° C in recent years. This increase in temperature in practice directly affects the design and installations of systems that allow maintaining the thermal comfort of existing buildings in the city. The present article shows a case study of design to satisfy the need for cold through an air conditioning system for a building of the ESPOL Polytechnic University, through the design of a hybrid Variable refrigerant flow (VRF) system based on solar energy using the cooling load temperature difference method to calculate building thermal loads. Subsequently, the design of the hybrid system was carried out, based on the meteorological data of the area , due to area limitations it was not possible to fully supply the energy demand of the air conditioning system, so we proceeded to calculate the quantity of solar panels and photovoltaic system energy production Finally, it was determined that the hybrid air conditioning system will be profitable, obtaining an NPV greater than zero, estimating a saving of $ 21,821.27, during the useful life of the installation, in addition to an estimated reduction of CO2 emissions of 1,111.16 Tons