Green Building: Cool Without Air Conditioning.

A group of small tourists took a nap in the sample room of the Hamburg case hall. They were impressed by the temperature conditioned non air conditioned buildings.

London zero carbon Museum promotes building airtightness and collection.

Standing on the top floor of the Hamburg house in Hamburg, Germany, it is the landmark of the city's best practice area, a huge chimney thermometer.

The number is striking -- 34 degrees Celsius.

At that time, it was 12 hours yesterday, and the highest temperature on that day exceeded 35 degrees.

Today, Shanghai will usher in "great heat".

The best practice area with low carbon and energy saving will face many consecutive high temperature exams.

The number of cases that originally claimed "no heating in winter and no air-conditioning in summer" can really make "cool summer"? In modern cities with reinforced concrete forests, if we want to prevent heatstroke, do we have to sacrifice environmental protection at the cost?

Yesterday, reporters held a thermometer measured, a "Hamburg home" and other urban cases cool cool summer secret.

Hamburg case sealed building heat insulation breathability

In the glare of the sun, the Hamburg house has not yet come to the "Hamburg house", and visitors are heard on the footbridge. "Let's go to Hamburg. I've been there once. Don't be too comfortable."

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As soon as he entered the door, more than 10 pupils from Chongqing shouted at the same time, "Whoa". The little faces on the sun were full of smiles.

Reporters observed at the door, the museum every 7 minutes or so released 20 people, the total number of people within 200 people, which is to ensure that "passive room" to maintain the constant temperature of one of the knack.

Many visitors stopped immediately when they entered the hall.

"Hamburg house" is like a "sealed" four storey building with compact structure, good thermal insulation and air tightness.

Usually, in order to cut off the "heat exchange" with the outside world, when the tourists enter the tour, the staff must first shut the first door outside and then open the second door.

According to the visiting route, the reporters measured the temperature by layer by layer: first floor, 27 degrees, two floors, 25.5 degrees, third floor, 25 degrees, four floors, 28.5 degrees Celsius.

The commentator explained that the temperature in the museum was kept at around 25 degrees Celsius, but because the tourists entered the hall from the first floor, the temperature was also higher. As for the four building, the "high temperature" appeared.

In addition to closing doors, there are many high-tech elements in the building itself: the roof has 18 centimeters thick insulation walls; the outer walls are not ordinary wall tiles, with 20 cm thick insulation polystyrene in the middle; and the ordinary windows are more doorways, each of which is made of three layers of glass made of special materials.

Reporters also found the air supply device on the ground near each floor. The device provided a fresh air for dehumidification and recovered the heat inside the house. The recovery rate was at least 90%.

London case capillary wall reduces room temperature

Mr. Wang, a tourist in Guangdong, strode into the zero carbon bar in London. He sat down and breathed in. He hurriedly ordered a beer and repeated "ice on more".

When the reporter told the museum that there was no air conditioning equipment, he stared in amazement - "how could it be!"

This is the noon of the dog days, and the indoor temperature of the zero carbon bar is 25 degrees.

As the first zero carbon dioxide emission public building built in China, the zero carbon Museum of London also maintains "cool summer and warm winter" by improving the air tightness of buildings, collecting solar energy and human body heat.

The temperature of the lecture hall is the lowest in the whole hall. The measured temperature is 23 degrees.

In addition to solar energy, ventilation devices and cooling water in the Huangpu River, the staff also added capillary radiation cooling system. The low-temperature water produced by the river water source heat pump was directly pferred to the formwork installed in the wall through the pmission system, just like the capillary tube, which directly cooled the walls and indoor environment.

Similarly, a cool world in the ROA case in France is at 12:30 yesterday. The temperature is as low as 21 degrees Celsius.

The museum also mentioned to the reporter the environmental protection technology of the river water source heat pump.

In short, the water from the Huangpu River will be cooled through the exchange cycle, which will greatly reduce carbon dioxide emissions.

In fact, the number of cases that claimed that "summer does not use air conditioning" do not use air conditioning in the usual sense.

It is understood that in the whole urban best practice area, the Shanghai World Expo organizer has installed the river water source heat pump for all the venues.

Reporters in the "Hamburg house" basement heat pump room noticed that in addition to collecting ground up to 35 meters of ground source heat pump device, there is a set of river water backwater and water supply equipment.

The museum admits that during the Expo period with a large number of people, such as relying solely on ground source heat pump, the cooling effect is unlikely to achieve such a "cool summer".