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The FIFA 22 World Cup is now in full swing. Qatar has built seven new soccer stadiums in preparation for the World Cup, which is said to be one of the most ambitious.
Located on the southwest coast of the Persian Gulf, the Qatar Peninsula is a tropical desert with long, hot summers and cool, dry winters. But even in winter, the daily temperature can exceed 30 degrees Celsius. To keep everyone comfortable, the World Cup organizers also installed the first air conditioning for the stadium.
With its large population, small land area and high energy consumption, will it have an impact on Qatar’s air pollution problem?
First, since the construction of the theater, the theater looks like a cold air bubble, and the open top looks closed. This not only reduces solar radiation, but also keeps the cool air in the stadium. Some theaters are equipped with removable roofs, which can adjust the amount of light input depending on the weather conditions, and the roof can be closed in case of bad weather. The tops of the areas are mostly made of transparent materials to increase the reflection of the sun’s radiation and avoid excessive heat, said Dr. Saud Abdulaziz Abdul Ghani, Professor, Faculty of Engineering, Tar University.
Ghani said there is nothing to worry about because each cooling system only works in specific areas at specific times. The cooling technology is 40 percent faster than before, and the theater only needs to be cooled two hours before the event, significantly reducing the energy consumption of the venue. In addition, the energy used in the Qatar World Cup, from a solar panel farm outside Doha, is clean and environmentally friendly.
Wang Fei, an employee of China Haier Air conditioning R&D Department, said that the translators of the Qatar stadium will convert from solar energy to electricity, and then the electricity will drive the air, this clean energy, compared to home air conditioners that depend on the electricity grid. the energy is very good.
In the past, refrigerators used Freon as a coolant, which was cost-effective, but when used, Freon is released into the atmosphere and causes significant damage to the ozone layer, because A fluorine atom can destroy thousands of ozone. molecules. After the destruction of the ozone layer, the weak effect of ultraviolet rays weakens, and more heat from the sun reaches the earth, causing global warming. This is why the use of Freon as a refrigerant in air conditioners has been abandoned today, Wang said.
“I think we should also consider the environmental friendliness of the resource. After all, the construction process is polluting and wasteful, and we should also consider whether Qatar is using 100 percent of solar energy to provide electricity for this wind. Generally, we design solar wind chillers to use a part of the sun’s energy and the rest to use the normal electricity schedule. Because solar energy is not always available, it has some degree of volatility,” Wang said.
This may be similar to the air conditioners in our homes, the constant use of which creates a heat island effect and also contributes to global warming. As with energy conservation, when the air cools the room, the radiator pushes the heat out. The heat island effect is very bad in cities due to the large number of buildings and the difficulty in removing the heat, so the temperature varies, the temperature in the city is much lower than in the city much.
Air quality affects the design of the air and its use, but also in the building, clean energy, transportation, resource saving and many other areas. Wang said that the air pollution is very low, but the group should work hard to develop low-carbon, better environmental protection, and people should understand the importance of protecting your environment.
(If you are interested in contributing and have specific expertise, please contact us at nature@cgtn.com.)
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