| With the development of human's living standard and the rise of skating,there is a new development opportunity for the construction of indoor ice rink.What makes the ice rinks unique in comparison with other public buildings no matter in developed or developing countries is the refrigeration system ?heating system? ventilation system?dehumidification system and lighting system run at the same time.As one of the most energy consumption of public buildings,reasonable design system and energy-saving research is very important.High air humidity indoors brings on corroding problems with steel structures,decay in wooden str uctures and destroy the construction of the building.Another problem with too much water vapour content in the air is the fog created over the ice that makes it hard to play or control the movements.It also brings indoor air quality problems like fungi a nd mold which will influence the air quality and human comfort.Therefore,the main purpose of this study is to design a reasonable air distribution form according to the requirements of the dehumidification system,and analysis of energy saving efficiency for different dehumidification system in different climate zone.The main contents include the requirements of the air dehumidification system in indoor ice rink,simulation of the air distribution for different dehumidification system and analysis of the energy saving efficiency for different dehumidification system in different climate zone.First of all,the air dehumidification system design requirements for temperature,humidity,cleanliness and minimum fresh air to prevent the air from dew or flog indoors,then analyze the reasons of the fog by the psychrometric chart.Secondly,simulating for the indoor temperature and humidity distribution under different airflow organization forms by using Fluent software.Discoveries as follows:(1)When the inlet and outlet of air designed on both sides of the ice rink,indoor air temperature appeared reasonable stratified in the vertical direction,with the increase of vertical height,the air temperature is also increasing.And in the horizontal direction,the indoor air temperature and humidity distribute evenly;(2)When the inlet and outlet of air designed on just one side of the ice rink,the indoor air distribute unevenly and fog happens near the wall;(3)The indoor temperature rises with the increase of the supply air temperature,the relative humidity reduces with the increase of the supply air temperature,therefore,the higher supply air temperature,the lower possibility of fogging.Then,three energy-saving dehumidification system are designed,they are cooling dehumidification system with waste heat recovery,wheel dehumidific ation system with heat recovery and low temperature-regenerate heat pump wheel dehumidification system.Last,discusses the energy saving efficiency of the three kinds of dehumidification system combined with different characteristics of the dehumidification system and the outdoor climatic parameter in the four typical urban in different climate zone.The result shows that low temperature-regenerate heat pump wheel dehumidification is the best system for the city Hangzhou ?Xi'an and Lanzhou which represent humid?semi-humid and semi-arid region.And the higher of the water content in the outdoor air,the greater of the energy saving efficiency.It saves about more than 60% energy consumption compared with the cooling dehumidification system with the waste heat recovery.The best system for the arid region like Wulumuqi is the wheel dehumidification system with heat recovery,which saves 48.5% energy consumption.The study of this article provides a reasonable solution for the design of the air dehumidification system in indoor ice rink,and gives a reference for reducing energy saving operation cost in the future. |
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