On July 22, the waiting hall of Hangzhou East Railway Station (source: The Paper)
"Sweat is raining down in the waiting room of Hangzhou East Railway Station" "Doesn't the train station turn on the air conditioning?" ”…… Recently, there have been many posts on the Internet complaining that the waiting hall of Hangzhou East Railway Station is too hot.
"The sun shines through the skylight, and it's hot." On the morning of July 22, Xiaoma arrived at Hangzhou East Railway Station by train from Zhengzhou, preparing to go to Tongxiang from Hangzhou East Railway Station in the afternoon. He told reporters that while waiting for the bus, he began to sit on the seat next to the 18B ticket gate, with his head facing the roof skylight, and at about 11 o'clock, the sun shone on him through the skylight. Sweating profusely, he got up and sat down on the floor by the ticket gate.
"When I entered the waiting hall, I was sweating and my clothes were wet." Mr. Zheng from Taizhou took his children to Hangzhou last weekend to visit relatives, and planned to return from Hangzhou East Railway Station at 15 o'clock on the 22nd, and took the train one hour earlier on the same day. He told reporters that after he entered the station from the east entrance, he did not find a seat in the waiting hall, so he sat in the business district on the second floor on the left side of the east entrance, and began to sweat after a while. He was slightly chubby and afraid of heat, so he wanted to go to a restaurant to cool down, but he saw that the clerk was too hot to do so, so he dismissed the idea.
At 13:22 on July 22, at the No. 18 and No. 19 ticket gates of the East Entrance Station of Hangzhou East Railway Station, the thermometer showed that the temperature at the location was 34.4 °C (source: The Paper)
At noon on July 22, the temperature in Hangzhou was 38 °C. The surging news reporter measured the temperature at five locations inside and outside the waiting hall of Hangzhou East Railway Station: 36.5 °C outside the east entrance, 30.7 °C at the security checkpoint at the east entrance, 31.3 °C at the back of the business district on the first floor on the left side of the east entrance, 33.2 °C in the business district on the second floor on the left side of the east entrance, and 34.5 °C at the ticket gates 18 and 19 in the waiting hall.
Of the five locations mentioned above, the temperature at the security checkpoint at the east entrance is the lowest, and here you have to pass through the entrance to the station, where there is a row of air conditioners installed above the gate, and the cold air is constantly sinking. The hottest ones are at the 18th and 19th ticket gates, which are in the center of the hall and have a lot of traffic and rows of transparent skylights overhead.
The relevant person in charge of Hangzhou Railway Station said that netizens reported that they attached great importance to the stuffiness of the East Railway Station, and also took relevant measures, adding 27 air coolers in the waiting hall, and installing 4 air curtain machines at the ticket gate of Nanjing-Hangzhou-Ningbo Field with more dense personnel, and will be installed in the future. The air conditioning in the waiting hall has been running overnight, but the high temperature in Hangzhou continues, and the entrance and ticket gates are open again, and the air conditioning is lost, and some passengers still feel hot.
"The waiting hall is stuffy" is not an isolated case
According to reports, the phenomenon of "stuffy waiting halls" in the mainland has also occurred in many places across the country before.
Last summer, the central waiting area of the waiting hall on the second floor of Beijing South Railway Station opened a "sun umbrella flower", and more than 100 parasols were set up for the first time to shade and block the light for waiting passengers.
Beijing South Railway Station (Source: Beijing Youth Daily)
The waiting hall on the second floor of Beijing South Railway Station adopts a vaulted glass roof design, which is full of natural lighting. However, when summer comes, the glass roof can't stop the hot sun, and the sun will shine on the seats. It is understood that during the summer of 2019, Beijing South Railway Station had upgraded the vaulted glass roof of the waiting hall. The glass roof is newly painted with a nano material to block ultraviolet rays, infrared rays and some visible light, and play a certain role in heat insulation.
"The opening and closing of the parasols are dynamically adjusted according to the weather, and the parasols will all be closed after continuous rain in Beijing a few days ago, so that the natural light in the station will be more sufficient, and the parasols will be all opened when the weather is hot." The relevant person in charge of Beijing South Railway Station said.
It is understood that many railway stations design the top floor of the railway station as transparent glass for reasons such as lighting and energy saving, and Shijiazhuang Station, Tianjin West Railway Station and other railway stations are designed in this way. In 2021, during the renovation of Nanning Railway Station, the originally closed top floor was specially rebuilt into transparent glass.
On July 5 last year, Changsha South Railway Station used ice cubes to cool down. Many netizens posted videos saying that a large amount of ice cubes were placed in the waiting hall of Changsha South Railway Station to cool down. In the video, in the center of the waiting hall, there are blue boxes containing large ice cubes.
Changsha South Railway Station of Guangzhou Railway Group said that because the station is a semi-open design, the air conditioning effect is not very good, and ice cubes will be placed once a day in the morning and afternoon to cool down.
On July 2 last year, netizens reported that Shangqiu Railway Station was "as hot as a steamer", and a number of large fans were added to the waiting hall, large ice cubes were added, and two air conditioning equipment were also added. The station said that the station will be renovated in the future, and the problem of poor air conditioning in the waiting hall will be solved.
Can the roof of the waiting hall be designed with both daylighting and thermal insulation?
(Source: Beijing Youth Daily)
According to a CCTV news "Newsweek" report last year, the waiting hall of Beijing South Railway Station has a vaulted glass roof, and although there is air conditioning under the sun, the temperature in the hall still rises significantly. To alleviate the sweltering heat, dozens of parasols were erected in the waiting hall. In this regard, the host Bai Yansong proposed that the airport, railway station and other public buildings use glass domes in a large area, and the lighting has become better, but the overall view is energy saving or energy consumption, I really hope that the architectural community will think about this problem.
A senior practitioner in the field of architectural design also said that these problems are actually common problems in the construction of a specific period, once, in the design of some public buildings, due to the one-sided understanding of the concept of green building, in order to meet the aesthetic needs and reduce lighting power consumption, a large number of glass light-transmitting materials are used in the design of ceilings and roofs, which also leads to the situation that the air conditioner is still stuffy at full power in public buildings in summer.
The reporter searched and found that Wang Li, the architect of Zhongnan Architectural Design Institute, who participated in the architectural design of Hangzhou East Railway Station, was the third author in 2014 and published the paper "Analysis of the Design of the Sunshade of the Roofs of Large Space Lighting - Taking the Sunshade Design of the Lighting Roof of Hangzhou East Railway Station as an Example", mentioning that the thermal comfort of large-space buildings such as Hangzhou East Railway Station using skylights for lighting has deteriorated, and the air conditioning load has increased, and one of the improvement measures is to add a sunshade structure.
He said that the indoor space of Hangzhou East Railway Station is large, and if only side lighting cannot meet the indoor illumination needs, the top lighting skylight is indispensable. However, from 1981 to 2010, Hangzhou had the third highest temperature days above 35°C in China's provincial capitals, and the summer was hot, and the solar radiation caused a large amount of solar radiation heat to the light-transmitting part of the roof, which directly affected the thermal environment of the internal space of the building, reduced the thermal comfort and increased the air conditioning load. In this regard, he suggested that a suitable shading structure could be designed on the skylight. Since the roof is a curved roof, considering factors such as cost, routine maintenance, machine failure and construction, it is recommended to choose fixed shading louvers.
Source: Jimu News