Why is the temperature of the Qatar World Cup stadium so cold?

2386

Published by
Jimmy at
November 25, 2022

Qatar is a country of deserts. The desert is characterized by the fact that it is very hot when the sun shines, and it is very cold without the sun. The World Cup used to be held in August. Why did Qatar put it in November to avoid the unbearable heat of the desert in August?

But even though it's winter now, it's still very hot in Doha under the sun. The outdoor temperature is around 30°C, the sun is hot, and ordinary people will sweat when wearing a short-sleeved T-shirt. In the evening, it is relatively better and the temperature has dropped, but there will be some "greenhouse effect" when tens of thousands of people gather in the stadium.

In order to solve this problem, Qatar began to study outdoor air conditioning systems several years ago. After researching and researching, the best way is to force refrigeration. Fortunately, Qatar has money, then find a way to make air conditioners with more power and function, and let these air conditioners blow cold air from different positions and angles. Bring the temperature down abruptly.

The world's first "air-conditioned stadium" officially unveiled in the World Cup is the Gulf Stadium. A reporter specially visited the air conditioning system of the stadium.

It turned out that on the side of the outermost corridor in the stadium, there is a pipeline for conveying air-conditioning, and there is an air-conditioning air outlet jet diffuser not far away. Standing under the tuyere jet diffuser, you can clearly feel the strong cold wind; standing in the field, at the highest point of the ceiling, there is also a dense circle of small holes, blowing cold wind from top to bottom.

This type of jet air diffuser is specifically designed for applications requiring high airflow capacity and long-distance supply systems. Airflow can be easily adjusted from jet to diffuse mode, and the direction of airflow can be adjusted by moving the inner core

Hundreds of jet air diffusers are also "hidden" under the seats of the auditorium. They are like the small nozzles of the shower head. They will blow out a small but dense cold air from the height of the audience's ankles, allowing the air to circulate gently. When you get up, it feels cool and not icy.

Below the stands, at intervals, there will be groups of four large nozzles. The wind is very strong, bringing air conditioning to the players and referees in the stadium. During the game, it can create a 2-meter-high, "completely isolated" cooling bubble.

The data shows that there are at least 3,000 jet air diffusers such as large and small air outlets in a stadium, and the temperature adjustment effect is very obvious. Many people who went to watch the ball deliberately put on long-sleeved jackets.

Dr. Jani, a professor of mechanical engineering at Qatar University, said they began designing and installing an innovative cooling system for the World Cup stadium several years ago. The design of the cooling technology was inspired by research into automotive air conditioning - "The cooling of these stadiums is like the cooling of motor vehicles, and we use the same tools and principles in the cooling technology, but on a huge scale." Jani said.

The technology combines thermal insulation with "targeted cooling" - meaning that cooling is applied to the areas where people actually appear, making the stadium a barrier, containing a "cold bubble".