Eventos Anais de eventos
COBEM 2019
25th International Congress of Mechanical Engineering
ECONOMIC ANALYSIS OF A CO2 SMALL DIRECT ASSISTED SOLAR HEAT PUMP FOR A DOSMESTIC WATER HEATING
Submission Author:
Fernando Silva , MG , Brazil
Co-Authors:
Fernando Silva, Rodrigo Alonso Pires Júnior, Tiago de Freitas Paulino, Sabrina Nogueira Rabelo, Luiz Machado
Presenter: Fernando Silva
doi://10.26678/ABCM.COBEM2019.COB2019-0502
Abstract
Water heating for bath occupies a large portion in energy consumption in Brazil since the most used device for this application is the electric water heater. In the past decades, several researches have been investigated as alternatives to reduce the consumption of electric energy. In that context, heat pumps are proven to be an effective option to heat water, since they use in the most part the free energy available in the environment. Then, this paper presents an economic analysis of a small DX-SAHP operating with CO2 for water heating. With a solar collector size of 1.57m², this heat pump uses solar energy as a heat source to improve the performance of this equipment. The experimental tests were conducted in Belo Horizonte (Brazil) from April to June of 2018. In that way, with the data collected, it could take the average temperature and radiation for each day to estimate the payback period of this device. A survey of the prices of the components needed to make the DX-SAHP was also carried out. The results obtained were a payback period of 240 months to water heater of four people in a family and 134 months for six people in a family.
Keywords
heat pump, CO2 heat pump, Economic analysis
