engleski

Energetic and Economic Analysis of Solar and Air to Water Heat Pump System for Sanitary Hot Water Heating in Tourist Camps

In the paper an energetic and economic analysis of sanitary hot water (SHW) heating systems was performed. Three types of SHW heating system have been analysed: first with flat plate solar collectors, second with air-water heat pump and third with electric heater. The input parameters for the analysis have been used from measured meteorological data for the Adriatic Coast climatic conditions. The possible utilization of night off-peak electrical energy, using heat storage was analysed as well. The paper deals with dynamic models for energetic balances of mentioned systems. As referent value for system control, hot water temperature changes in a storage tanks, have been taken. These temperature changes are due to heat gain and thermal energy accumulation. The heat storage model was developed using the “stirred tank” approach with variable temperature during a certain time. The numerical model takes into account the influence of temperature difference in a heat exchanger to heat flux and SHW temperature in storage tanks. This model enables system optimisation and gives energetic balances necessary for energetic and economic optimisation.

sanitary hot water heating; energetic and economic analysis; numerical modelling; air-water heat pump; solar collector

nije evidentirano