Research On Design,Selection And Optimal Control Of Air-Conditioning System For Polar Cruise Ship

With the development of global polar tourism,polar cruise ships have attracted people’s attention.As a key system to meet the comfort standard of living,the air-conditioning system design,equipment selection and control mode directly determine the comfort of the thermal environment of the cabin and the economy of the polar cruise ships.With the high-end of polar cruise ships,theirs air-conditioning system has also become large and complex,and the design,selection and optimal control of the air-conditioning system need to form a system to solve a series of complex problems in the system design,equipment selection and optimal control of air-conditioning system for polar cruise ships.Aiming at the complex problems of system design,equipment selection and optimal control of air-conditioning system for polar cruise ships,this paper proposed a set of overall solution of air-conditioning system including air-conditioning system parameter design,working condition design,load and air volume balance calculation,application of equipment configuration scheme selection method,cabin airflow organization mode design and selection analysis method,and variable air volume air-conditioning terminal device control strategy optimization.The main work of this paper is as follows:(1)According to the parameters of the actual polar cruise ship,the theoretical calculation of the air-conditioning working condition design,load and air volume was carried out.(2)This paper designed two air-conditioning equipment configuration schemes for actual polar cruise ship.In order to select the best equipment configuration scheme,a selection evaluation index system was proposed as a selection evaluation hierarchy model based on factors such as cost,energy saving,environmental protection,comfort and classification society specifications.Aiming at the complexity,ambiguity and subjectivity of the selection of air-conditioning system equipment configuration schemes,The fuzzy comprehensive evaluation method based on Analytic Hierarchy Process and Entropy weight Method to the selection of equipment configuration schemes for polar cruise ships air-conditioning systems was proposed,and this paper have verified the selection methods for the application of actual polar cruise ship.(3)In this paper,two airflow organization schemes were proposed for the contradiction among the comfort of the air-conditioned cabin and the maintenance and cost of equipment.Airpak was used to simulate the cabin airflow organization schemes,and the comfort indicators were quantified,and finally the advantages and disadvantages of each scheme were analyzed.(4)In this paper,aiming at the problem that the load change of the variable air volume air-conditioning system in public areas has uncertainty and the regulation time delay,the mechanism model of the variable air volume terminal device system was established,and the simulation experiment was carried out on the Matlab/Simulink simulation platform,and the differences in control effect between the traditional PID control strategy and the fuzzy PID control strategy were compared.In this paper,for the polar cruise ships,the research on the system design,selection and optimal control of the air-conditioning system was carried out.A systematic solution to the air-conditioning system of polar cruise ships was proposed.The calculation analysis,scheme design,application of selection method and optimal control had been verified on the actual polar cruise ship parameters.The work of this paper has reference value for the design and selection of air-conditioning system in the design and construction process of polar cruise ships in the future.