Research Of Dehumidify And Air Supply Technology In Platform Public Aear Of Subway

Subway is an important traffic tool for its obvious advantages, such as big capacity,safety, high efficiency, stable, low pollution, savefloor space, ease traffic pressure andso on. With the improvement of people’s life quality, They put forward higherrequirements for comfort of the subway environment when they take the subway. As thenecessary part of environment control system of subway station, the ventilation and airconditioning system of public area of the subway station undertake the task of providingsuitable environment for passengers, and it is also as a major energy consumption ofenvironment control system of subway, so it becomes an important research point ofsaving energy and improving air quality in subway.The main goal of the ventilation and air conditioning system of public area of thesubway station is to control the environment’s temperature, humidity and air velocity.The current environmental control system of public area of the subway adopts the wayof temperature and humidity joint processing, by which to achieve the purpose ofcooling, dehumidification. This method is simple and easy to implement, at the sametime, it is also with shortcomings such as inefficient, huge energy consumption; On theway of ventilation, the public area of the subway station is still use conventional mixingventilation, which provides poor air quality. The temperature and humidity independentcontrol air conditioning system is a new form of air conditioning system, and it has anessential difference with the traditional air conditioning system. It’s main idea is toprocesss the current environment temperature and humidity separate ly, and it uses twosets of independent dehumidification and cooling air conditioning system, which avoidsthe unnecessary lose in the temperature and humidity joint processing way.The ventilation and air conditioning system of platform public area of the subwayis the research object in this paper. On the way of dehumidity, the paper uses liquiddesiccant to remove the humidity load in it, and the liquid desiccant is based on thereflux packing-type liquid desiccant system. This paper analysis the output airtemperature and humidity characteristics of the system above on. On the way of airsupply, This paper uses the displacment ventilation which could supply more efficientand better air quality. Based on the actual coolingand humidity load, the paper solvedthe corresponding air supply parameters of displacement ventilation, it used theprofessional analysis software Fluent-Airpak to model and simulation, analysisd thetemperature field and humidity field, velocity field and the average age of the platformpublic area the subway station, and compaired with traditional mixing ventilation.