Why can an igloo be heated? Doesn t making a fire in an igloo to warm it melt?

The main reason is that the igloo blocks the invasion of the cold outside to a certain extent, and the temperature difference between the outside temperature and the inside temperature will gradually appear, and the inside of the igloo will not be too cold; It won't melt the cold outside, and it will protect the whole house.

First of all, ice is a bad thermal conductivity, which can play a good role in thermal insulation, and it is difficult for indoor heat to reach the outside through the ice wall. When the Inuit cave in the igloo, they built the hole very low so that the hot air in the house would rise and collect on the roof, and the cold air would descend and collect in the lower part of the cave to ensure that no heat was lost inside. Secondly, in the cold season, people need to dress a little thicker, so there is a simple and practical way:

Tie the hole with a rope. Hanging a hide curtain at the entrance of the hole can further prevent cold air from entering the room.

Winters in the Arctic are very cold, and while there are fires inside, they don't generate enough heat to melt the igloos. In the beginning, the temperature in the house rises slowly, and the heat can melt some of the snow brick surface. Over time, the indoor temperature gradually decreases, and when the indoor temperature drops below freezing, the phenomenon of freezing occurs.

At this point, the snow needs to be thawed with ice water. But the rate of melting can't keep up with the rate of condensation. The liquid melts at the surface and then slowly freezes into a smooth solid ice crust, which then melts and freezes in a freeze cycle, finally forming an ice crust that melts by fire alone.

Because the space of the igloo is still relatively small, if you heat the fire in it, he can achieve the effect of keeping warm, and the ice will not melt, it will be more solid.

Because the igloo is a solid substance, the igloo's burning point is actually below the burning point of the fire, so it will not melt.

I believe that many friends, in the ** documentary or related reports, will find that in the Antarctic or the North Pole, people are used to build igloos to preserve temperature, and even some local residents sleep directly in igloos. So why does an igloo keep you warm and lighting a fire inside doesn't cause it to melt? What kind of secret is there.

Today, I will talk to you in detail about why igloos have so many miraculous effects. <>

To understand why an igloo is able to preserve temperature, we need to understand the local conditions. Under the harsh conditions of the polar regions at that time, it was often possible to reach minus 40 or 50 degrees Celsius outdoors, and the local residents, based on such conditions, chose the right ice and snow to preserve the hot air and ensure that the air did not flow. When they build an igloo, they also use various tools to make up for the gaps in the igloo construction, so as to ensure that there is a temperature difference between indoor and outdoor.

Sometimes it is often tens of degrees below zero, and the indoor temperature can reach above zero. In order to keep warm in an igloo, it is generally important to choose the place where the igloo is built, because the hot air will float upwards. Therefore, in this case, people will choose to build the door as low as possible, so that the cold air will flow out of the door, and the hot air generated by the ignition will be retained in the room, so that the indoor temperature can be well maintained.

The reason why a fire is lit indoors does not cause the snow and ice to melt is mainly due to the temperature difference between indoor and outdoor areas. Even if the indoor temperature reaches minus 10 degrees Celsius, the snow begins to melt gradually, but due to the effect of the cold air outside, the snow will be frozen again the moment it melts. As a result, the snow and ice are melting all the time, but they are freezing faster than they are melting, so the igloo can be preserved for a long time.

To sum up, in the polar regions, people combine local conditions and natural environment to build igloos to keep warm in order to keep warm. And because of the temperature difference between indoor and outdoor, the igloo will not melt even if you light a fire indoors to keep warm.

Igloo fire does not melt.

When the temperature inside the igloo is high, the inner layer of the igloo will melt, and the water will flow from top to bottom, and the temperature of the ice cubes in the lower layer of the igloo will be below 0 degrees, so the water that flows down will freeze into ice, and in the long run, it will not collapse, but will become stronger and stronger.

Of course, if the temperature in the igloo continues to rise, then the igloo is still at risk of collapsing, but the key is that there is a vent above the igloo, where there is an alternation of hot and cold air, which is enough to ensure that the temperature of the igloo does not meet the standard of collapse. In this way, the igloo is naturally warm and safe.

The principle of the igloo.

Ice can actually insulate the heat, so there is no way to conduct the heat in the igloo to the outside through the ice wall, so the heat is accumulated in the room to keep the room warm.

In addition, igloos are more impermeable than some other building materials, so the Arctic region.

can be completely blocked by ice.

And the igloo is basically only hung with animal skin curtains at the door, and there are no windows in other positions, etc., which are frozen into one, so that the sub-god can reduce the convection of the air inside and outside the house, and the Inuit people also made very clever use of the air flow when building the igloo, so that the heating can gather in the house without dispersing, and under the action of outdoor cold air, the heat in the house will not melt the ice.

First of all, igloos were built in an original way. They all use a strange dome. The Eskimos of Greenland and northern Canada cut thick snow into large thick snow bricks with long knives and built circular foundations on the foundation with snow bricks about 3 meters in diameter.

People stood inside and built them layer by layer with bricks. When they are built up to two or three floors, a door opens on one side for temporary entry. Each layer of masonry shrinks inwards a little, leaving only a small hole at the top.

Due to the heat conduction effect, the inside of the SnowRoom will melt a little first, and then an ice crust will form inside it, which is very hard and will not melt again. Then it will reach minus 20 or 30 degrees, and people can live in it.

Secondly, the Arctic region is extremely cold. Temperatures rise above 0 for only a short period of time throughout the year. Winters are long, cold, and dark.

From November, the temperature will drop to minus 50 degrees Celsius for half a year. Although there is fire in the house, the heat does not melt the ice house。At first, the heat can melt the surface of the snow bricks, but only a small layer, and then slowly freeze into a smooth and solid ice shell, and the heat of the fire can no longer melt the ice shell and the snow bricks outside the ice shell.

Although the indoor temperature of the igloos built by the Eskimos is above 20 degrees, the air above 20 degrees does not come into contact with the ice. The air near the ice is still below zero. This phenomenon is caused by the fact that the ice melts at an external temperature (above 0 degrees) at a slower rate than at an internal cooling temperature (below 0 degrees).

However, if the temperature difference is small (in this case, cutting off the power to the refrigerator or lowering the cooling temperature), the ice may slowly melt. Just like a water container made of paper can boil water, but the paper itself does not burn.

The igloo is the embodiment of the ingenuity of the industrious and brave Eskimos of Greenland and northern Canada, who can live comfortably in extreme conditions despite the harsh living conditions.

I think the igloo can be built because of his certain stability.

This is because the ice used in igloos is very hard and does not melt easily.

For this kind of thing, it usually doesn't play a factor in this.

This is because the inside of the igloo is very stable, so it will not melt.