The Dynamic Simulation And Energy Efficiency Analysis Of Sea Water Source Heat Pump Units Of Marine

Energy has an important influence on the sustainable development of society which is closely related to the survival and development of human society. It is not only the important foundation of the national economic construction, but also the main source of modern production power.Sea water has strong ability of self balancing and a strong natural resilience and high quality of low energy, and is not only a kind of green energy, but also a kind of renewable energy. That is the reason why it has a kind of broad market for energy applications. Sea water source heat pump system of marine is one of important solutions to Marine energy consumption in the future. It uses sea water as its cooling and heat sources, supplying the needed energy for Marine refrigeration, heating and domestic hot water, since it has a characteristic of relatively stable temperature.Research and analysis respectively and established the mathematical model of the main parts of heat pump system; Finally, using Simulink software to write each model simulation program, through the relationship between each model, then the simulation program of the whole heat pump units,Firstly, this paper uses SWHP of the Marine as the research object, combined with the characteristics of the Marine air conditioning, carrying on designing calculation of the heat pump system and analyzing the temperature change of the heat source of heat pump; then, it calculates refrigerant thermodynamic parameters using a model of Cleland, and analyzes and establishes the mathematical model of the main parts of heat pump system respectively based on the Law of Conservation of Mass and the Law of Conservation of Energy. Finally, it writes simulation program of each model, and gets the whole simulation program of heat pump through the relationship of the models by Simulink. Once the relevant parameters is set up, we can run its dynamic simulation to the working condition of the summer, getting the results of simulation and analyzing kinds of factors affecting the performance of heat pump system, analyzing its energy efficiency in heat pump system, to provide the reference for SWHP for ship design research and the theoretical basis for optimization design of heat pump system.