engleski

Numerical Simulation of Heating and Cooling System with a Heat Pump

A dynamic numerical simulation model of a heat pump system for a building heating and cooling is developed. Numerical system model comprises subroutines that represent a heat pump, heat storage, temperature controllers and heat exchangers. Model is suitable for simulation of various system configurations and it is aimed to be used during the system design for making decision on optimal system configuration and control strategy. It makes possible different analyses of energy consumption and temperature changes in system or influence of different control actions on system behavior. Numerical simulations of a heat pump heating and cooling system for a building with 125 kW heating and 105 kW cooling load are performed. Control strategies comprising constant supply water temperature and variable supply water temperature that depends on outside ambient temperature are investigated. Two-position action and step controllers are used for the heat pump control. Influence of the control strategy on energy consumption and system temperature changes is pointed out.

modeling; heat pump; system; control

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