南方用土壤能新风除湿可行性及通风装置研究

The research on fresh air dehumidification using soil energy in south and ventilation device

根据南方热湿地区室外气象资料,分析了其室外气候特点,提出了南方热湿地区新风除湿的要求与条件.以重庆地区为例,根据土壤能的特点分析其在4~10月的部分时间有除湿能力,将其用于新风除湿是可行的.同时,试制了土壤能新风除湿通风装置,并进行了夏季运行实验,在实验新风量120 m3.h-1时,装置出口空气温度在23℃时,含湿量稳定在17 g.kg-1左右,表明利用土壤能对南方热湿地区进行新风除湿能基本达到新风处理要求.讨论土壤能新风除湿装置实验条件下的除湿性能和经济型,并将此装置与传统3种除湿方式进行技术经济比较,单位功率除湿量可达最低,但是由于初投资较大使得单位价格除湿量最小.

In this paper,according with outdoor weather date in the South hot-wet areas analyze the characteristics of the outdoor climate,proposed the requirements and conditions of fresh air dehumidification in the these areas.Take the city of Chongqing for example,according to the characteristics of the soil energy in Chongqing,it has dehumidifying ability from April to October,which includes the humidification period.Therefore,using soil energy for fresh air dehumidification is feasible.At the same time,made a fresh air desiccant device using soil energy beside the experimental building of urban construction and environmental engineering in Chongqing university,and carried out summer experiments.when the handle fresh air volume is 120 m3·h-1,the air temperature of outlet of equipment was about 23 ℃,the air humidity ratio of the outlet of the device is about 17 g·kg-1,the results show that the use of soil for fresh air dehumidification in hot-wet areas could make the fresh air reach the basic comfortable requirements.Discuss the device dehumidifying capacity and economic performance under the experiment condition,though the techno-economic comparison between the desiccant device with the other three traditional dehumidification methods,the specific power dehumidifying quantity of the device using soil earth can be reach the lowest,for the bigger initial investment,its specific power dehumidifying quantity is also the lowest.