Research Of Evaporative Cooling With Meteorological Parameters

With the improvement of people’s living standard, people have a higher request to the requirement of indoor thermal environment. The widespread promotion of energy conservation for building thermal environment not only satisfy people’s comfort but also energy saving, moreover,comfort and energy saving has become research’s main goal.Because of its energy-saving and environmentally friendly features the evaporative cooling air conditioning gets more and more attention of people. Studies have shown that indoor setting temperature and humidity relatively about evaporative cooling air conditioning are closer to outdoor meteorological parameters compared to traditional, so the evaporative cooling air conditioning system can be adopted to reduce cooling load and energy consumption of air conditioning. Therefore, it is necessary to adopt relatively energy-efficient evaporative cooling air conditioning scheme to meet the thermal comfort of human body.This paper firstly introduces the different combinations of evaporative cooling air conditioning, and the efficiency of different combination was calculated, using the weather tool to obtain the thermal comfort rate of four different partitions, in the end, Through the adoption of natural ventilation and night ventilation Jiulong area can obtain higher thermal comfort rate; Hami and Tulufan are suitable for indirect-direct evaporative cooling air conditioning scheme; Because of Nanchang city is located in high humidity areas, so need the evaporative cooling and traditional mechanical processing form.Then based on IPLV parameters to evaluate the performance of evaporative cooling air conditioning unit, and compared with COP, SEER,SPLV and IPLV, Studies have shown that the running efficiency of evaporative cooling air conditioning unit remains at around 50% to 75% of its capacity. In addition, based on the second law of thermodynamics to analysis the applicability of indirect/direct evaporative. finally,results show that these two ways are mainly concluded that entropy efficiency of indirect evaporative cooling process,the irreversible loss and the position relation of indoor and outdoor state points on the psychrometric chart.Secondly, statistics the Cooling Degree Days in Hami, Tulufan and Nanchang areaabout 60 years from 1954 to 2013, then divide 10 a as a computing unit, according to the regression curve to forecast the future number of the CDD in 120 years, the results show that with the gradual increase of the average outdoor temperature, the CDD is rising. In addition, analysis the relation between average outdoor temperature departure and the number of CDD, the results show that a good linear relation between these two quantities,and the higher the average outdoor temperature, the smaller the number of CDD variation,namely, the less sensitive.Finally, using the multiple linear regression to analysis the relationship between Energy consumption of air conditioning and the temperature, relative humidity,wind speed,using the F test and correlation coefficient R to test the results. Finally, the results consistently show that : for the design II, influence degree of temperature for air conditioning energy consumption is the largest, followed the influence of wind speed, and relative humidity is minimum;for the design III,influence degree of relative humidity for air conditioning energy consumption is the largest,followed the influence of wind speed,and temperature is minimum; for the design V, the effects of temperature on air conditioning energy consumption is the largest, followed the influence of wind speed, and the impact of relative humidity is the minimum.