| With the development of shipbuilding industry,people pay more and more attention to the comfort of cabin environment.Radiant heating and fresh air system can not only improve the thermal comfort of living environment,but also meet the requirements of indoor air quality because of its comfort and energy saving.There have been many application examples and related research in land buildings,but the application research of this system in cruise cabins is relatively few.Therefore,this paper mainly takes the cruise cabin as the research object,and simulates the indoor airflow distribution when applying radiant heating and fresh air system.The main work is as follows.Firstly,the radiation heating and fresh air system is tested in the artificial environment laboratory,and the experimental results are compared with Airpak simulation results,and the turbulence model and radiation model with higher simulation accuracy are selected for the simulation of this paper.Then,taking a cruise ship cabin as the research object,the influence of radiant panel position,radiant panel temperature,air supply mode,air supply speed and air supply temperature on cabin environmental comfort is analyzed by orthogonal test method.The results show that radiation mode and air supply mode are the top two significant factors.On this basis,ten combination schemes of five radiant panel positions with two different air supply modes were studied.Taking PMV,temperature unevenness coefficient,air age,ventilation efficiency,CO2 concentration and ventilation efficiency as evaluation indexes,the air flow environment and air quality in the cruise cabin were comprehensively analyzed by AHP,and two better combination schemes were given.Finally,the design parameters of these two combined schemes are compared and analyzed,and the suitable design parameter range is given by TOPSIS method,which provides suggestions for the selection of design parameters of radiant heating plus fresh air system. |
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