DESIGN OF AN INTEGRATED ENERGY SUPPLY SYSTEM FOR A HOTEL BUNGALOW IN CAYO SANTA MARÍA

Abstract

Introduction:
The current global and Cuban energy situation is marked by dependence on fossil fuels for electricity generation. The isolated energy system of Cayo Santa María faces difficulties in electricity generation due to its high cost.
Objective:
This work designs and evaluates an integrated energy system through energy modeling and simulation to guarantee the energy sustainability of a bungalow at the Iberostar Selection Ensenacho hotel. The system will generate electricity using a photovoltaic system, utilizes centralized vapor-compression systems for heating, cooling, and domestic hot water, and includes chilled- and hot-water storage.
Materials and Methods:
The bungalow's energy performance was modeled and simulated using SketchUp, Open Studio, and EnergyPlus software. The system was evaluated by comparing the current system with a system that combines renewable energy sources with efficient thermal systems and energy storage.
Results and Discussion:
The bungalow currently consumes 246 000 kWh/year. With the proposed system, the proposed system would save 203 000 kWh/year of grid electricity, in addition to generating 193 010 kWh/year of surplus energy produced by the photovoltaic system. Its economic viability is demonstrated, with the investment recovered in 7.5 years, and it guarantees more than 10 years of economic benefit. The proposed system would prevent the emission of 3,769 tCO2-eq over 20 years.
Conclusions:
These results demonstrate that the integration of the proposed systems guarantees energy sustainability in the hotel sector and offers economical profitability and significant emission reductions.