6533b7d6fe1ef96bd1265d97

RESEARCH PRODUCT

Energy and economic analysis of air-to-air heat pumps as an alternative to domestic gas boiler heating systems in the South of Italy

Guido AlaA. Di GangiAldo Orioli

subject

020209 energyTariff02 engineering and technologyIndustrial and Manufacturing Engineeringdomestic gas boilers systemsBoiler (water heating)law.invention020401 chemical engineeringlaw0202 electrical engineering electronic engineering information engineeringASHRAE 90.10204 chemical engineeringElectrical and Electronic EngineeringCivil and Structural EngineeringSettore ING-IND/11 - Fisica Tecnica AmbientaleWaste managementEnergy and economic analysibusiness.industryMechanical EngineeringBuilding and ConstructionCoefficient of performancePollutionair-to-air heat pump systemSettore ING-IND/31 - ElettrotecnicaGeneral EnergyHeating systemEnvironmental scienceElectricitybusinessThermal energyHeat pump

description

Abstract According to the electricity tariff recently issued by the Italian government for the domestic heating systems fed with heat pumps (HP), an energy and economic analysis was carried out with the aim of investigating the effectiveness of the air-to-air heat pump systems (HPS) as an alternative to the traditional heating using domestic gas boilers systems (GBS). For the purpose of this study, the apartments of three residential buildings were examined. The hourly heating loads were calculated with the ASHRAE radiant time series and the coefficient of performance (COP) of the HPs was evaluated for each operating condition. The costs for the heating system installation and electricity and/or gas bills were combined with the benefits, related to the current promoting tax credit program. The study turned out that the time when the GBS convenience surpasses the HPS mainly depends on the amount of thermal energy consumed in the year, although other important features, such as the domestic electricity consumption and the kind of energy used to supply the domestic hot water system and the cookers, play a relevant role in making the best choice between HPS and GBS.

yearjournalcountryeditionlanguage
2019-04-01Energy
https://doi.org/10.1016/j.energy.2019.02.011