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 Wysłany: Nie 2:50, 08 Maj 2011 Temat postu: oakley solbriller Metro Station environmental cont |
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Metro Station environmental control of temperature field
Staircase to the entrance increasing tendency, found in tests, because the closest entrance outside, the temperature is not only the highest of all units, but also the same as the outdoor temperature trend; no air-conditioning system in winter the average temperature is lower than the closed system ,[link widoczny dla zalogowanych], platform and stairs the most obvious temperature field, two of which the average temperature in summer environmental control system 1.6 ~ C, the maximum temperature difference 4.43 ~ C; winter mean temperature 3.59 ~ C, the maximum temperature 5.6 ~ C. This is mainly because the platform door on the station Piston Wind blocked the adverse effects of environmental control to reduce the station's cooling and heating loads. + Closed system ■ + Screen Door System . . . / '. i / '/ factory-1. , A, system, station temperature of the unit into the main train station and the heat on the temperature field developed from the site, stairs, station hall, entrance gradually decreased, the temperature remains out of the population close to the outdoor temperature, the trend has the same. Testing also found that the platform screen door system platform level, concourse level and stairs temperature less affected by the outdoor temperature, small changes in any segment, mainly wind screen door blocking the piston of each unit on the results of the station . Figure 3b) as a closed system, the temperature field in different seasons curves, closed system and door systems in summer temperature changes in the temperature difference is the higher the site, mainly in summer by the Pistons closed system platform layer over wind Great results. Pistons open air shaft in transition seasons,[link widoczny dla zalogowanych], stations of the unit by the outdoor temperature change significantly, close to the cell temperature. Winter site, station hall, the stairs by the outdoor temperature is higher than the population of the larger temperature, the unit can be seen in winter by the train station and the piston cooling effects of wind, temperature conditions can be maintained better. Emerged in the transition season and winter temperature is higher than environmental control station features the outdoor temperature. The summer due to 37.5O32.5O27.5O22 · 50 gift 1750l2.5O7.5O_ ◆ _ summer + winter / ', a' -, ◆ a '-. . --. . . . . 3O28 Chi 2318138. /. / BU -,,_- 1 - ten in winter - and ten transition quarter -a) b) Figure 3 in different seasons with different loop temperature control system compared a) PSD system temperature field b) closed system temperature field The role of iron air-conditioning system, the outdoor temperature is higher than the station of the cell temperature. 2.1.2 Closed systems and door systems compare temperature field can be seen from Figure 4,[link widoczny dla zalogowanych], the outdoor temperature is close to the case, platform screen door system l9.2l7.2l5.213 · 2 gift l1.29.27.2 - - . 1I . . A,,-h_ '- closed system, + PSD Fan site landing system entrance hall floors outdoor b) Figure 4 closed systems and door systems seasons temperature compared a) summer b) Winter 2 - 2 metro ring temperature control characteristics of each cell site 2.2_1 piston temperature 2.2.1.1 Wind on a section of the site no matter what the season, the site has a section of the total layer the higher the temperature, mainly the piston effect of wind on the characteristics of the site due. Through the platform layer temperature field analysis, the Pistons at both ends of the wind speed and wind in the platform than the larger sites at both ends of the summer the hot air into and out of many, resulting in the site ends at stop, a station under the vehicle condition, high temperature; winter due to the piston into and out of the wind tunnel and the main cooler outdoor air, causing both ends of the lower temperature, resulting in the Q at higher temperatures. Figure 5 for the same station platform surface temperature in summer and winter stop,[link widoczny dla zalogowanych], a station vehicle condition, the section of the temperature distribution. 2.2.1.2 Site of temperature field by the vehicle in site temperature changes with vehicle speed with the vehicle in the main with the piston the variation of the wind and outdoor temperature is related to the piston stop the wind into the platform under the vehicle condition, vehicle condition piston wind sucked out of station walk the site of air, making the station hall and the outdoor air into the platform layer to add. Summer, as the tunnel and outdoor air temperature is higher, so the inbound and outbound such as vehicle condition, the temperature gradually rising temperature field site, see Figure 6a); winter, the train stops, the piston inside the tunnel the train winds heat that site temperature rise, out of station, station more cold air into the room and the outdoor site, the site temperature decreased. Temperature under different vehicle in 0.17 ~ 0.81 ℃ in the Q, the average temperature difference of 0.42 ~ C, see Figure 6b). 2.2.2 concourse level temperature field and temperature field site compared to the train station hall temperature conditions affected by the reduction in import and export more vulnerable position, the internal structure of the station stairs and other features of the location and the outdoor temperature changes. 2.2-2.1 concourse level changes in temperature at any section of the Office of the temperature field station segment changes at any time with the traffic and the outdoor temperature changes 1133,[link widoczny dla zalogowanych],1 the first of 28 total crude j
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