Please use this identifier to cite or link to this item: http://hdl.handle.net/1843/58542
Type: Artigo de Evento
Title: Distributed mathematical model and experimental validation for a CO2 heat pump assisted by solar energy
Authors: Humberto de Oliveira Reis
Tiago de Freitas Paulino
Luiz Machado
Willian Moreira Duarte
Abstract: A use of CO2 operating in a transcritical cycle has been proven for heat pumps is a demonstrably viable and considerably interesting option due to the environmental advantages of CO2 over other refrigerant gases. In order to improve the energy performance of systems that use heat pumps, integrating a type of energy such as renewable geothermal, solar, wind and bio-fuels must be available. In this scenario, a mathematical model with experimental validation of the components that allows the modeling of the heat pump system to vary the input parameters and determine the outlet water temperature and the coefficient of performance (COP) of the heat pump. This article approaches the modeling of the DX-SAHP, in order to obtain the profile of temperature and pressure distribution along the gas cooler, and the values of heat exchange and pressure in collector solar/evaporator. The model was validated with experimental data from 88 tests performed under different operating conditions, even the DX-SAHP in question. In the experimental the radiation incidence range in the study environment was from 0 to 845 W/m² and at an ambient temperature of 21°C to 33°C. The maximum difference between the theoretical results and experimental results was 9.5%.
Subject: Evaporadores
language: eng
metadata.dc.publisher.country: Brasil
Publisher: Universidade Federal de Minas Gerais
Publisher Initials: UFMG
metadata.dc.publisher.department: ENG - DEPARTAMENTO DE ENGENHARIA MECÂNICA
Rights: Acesso Aberto
Atribuição 3.0 Portugal
metadata.dc.rights.uri: http://creativecommons.org/licenses/by/3.0/pt/
URI: http://hdl.handle.net/1843/58542
Issue Date: 2022
Appears in Collections:Artigo de Evento

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