Eventos Anais de eventos
COBEM 2023
27th International Congress of Mechanical Engineering
Strategies to Operate a Thermal Storage Device Integrated into an Air-Source Heat Pump for Residential Space and Water Heating
Submission Author:
Conrado Ermel , RS , Brazil
Co-Authors:
Conrado Ermel, Marcus Bianchi, Paulo Smith Schneider
Presenter: Conrado Ermel
doi://10.26678/ABCM.COBEM2023.COB2023-1302
Abstract
Thermal energy storage has been integrated into Heat Pumps (HP) in a variety of applications, including residential space heating. It is commonly used to shift the load from peak to off-peak periods, and various control strategies can be used for this purpose. This study explores different control logics for residential space heating systems consisting of air-source heat pumps integrated with a 10 kWht TES. Computational simulations are conducted under various conditions, emulating a standard dwelling. Three control logics are explored: i) avoiding operation in cold temperatures, ii) avoiding operation during expensive electricity periods, and iii) avoiding operation when the grid CO2 emission factor is high. Preliminary results indicate that energy savings are not achieved independently of the control algorithm. Addition- ally, compared to the standard system (without TES) economic savings of 5.5 % can be achieved with the second logic, while the third logic reduces emissions by 7 % while providing 2 % economic savings. Although a hybrid cost-emission algorithm proved to be the best option with improvements across all the parameters, the study emphasizes the need for further research on smart control algorithms that consider system characteristics and integrate weather, energy demand, and renewables dispatch forecasts.
Keywords
Thermal Energy Storage, heat pump, performance metric, control logic
