Why is the water heated in the morning in winter and cool in the morning in summer? 5

The Earth's surface is directly affected by sunlight and air currents, and the temperature varies greatly, with summers always being much hotter than winters and nights always colder than daytime. Soil in the ground cannot absorb heat directly from the atmosphere, nor can it directly dissipate heat into the atmosphere, and the soil transfers heat very slowly, so the change in underground temperature always lags behind the ground. The deeper you go underground, the more pronounced this backwardness becomes.

Well water is water that collects deep underground, and its temperature is about the same as that of the soil deep underground. In summer, when the sun comes out, the temperature of the ground rises quickly, but the temperature of the underground always does not rise so quickly, and the temperature of the well water is always lower than the temperature of the air above the ground, and we feel that it is very cold to the touch. In winter, the temperature of the ground drops quickly, but the temperature of the ground does not drop so quickly, and the temperature of the well water is higher than the temperature of the air above the ground.

As a result, the well water is warm in winter and cool in summer.

Not only does the well water feel warm in winter and cool in summer, but so does the cellar. Storing fruits and vegetables in the cellar in winter can prevent freezing, and storing fruits and vegetables in the cellar in summer can prevent corrosion. Beneath the streets of the city, there are buried water pipes that do not freeze even in the harsh winter when the water drips into ice.

It's just a feeling, in fact it's still the summer when the water temperature is relatively high. Because the weather is cold in winter, the coldest at night, and the specific heat capacity of water is larger, so the temperature of water is not as cold as the temperature of air, so that you feel that the temperature of water is higher than the surrounding environment, and it is naturally closer to the temperature that the human body thinks is comfortable; The answer is similar in summer. Specific heat capacity refers to the amount of heat absorbed or lost by a change of one degree Celsius in a certain medium.

A large specific heat capacity means that a lot of energy is absorbed or lost, and the change in temperature is very small.

The water used in the morning is basically in the pipes, and in the winter, the water in the pipes passes through thousands of households because the room temperature must be hot, and the same is true in summer.

Because the air temperature is low in winter, it will feel warm compared to water, and in summer, when the air temperature is high, it will feel cool.

Relative to the temperature, the water is warm in the morning in winter and cool in the morning in summer.

Because the outside temperature is low in winter, the water temperature is felt.

In summer, the outside temperature is high and the water feels cool.

Groundwater is at constant temperature.

It is related to the specific heat capacity of the land, the specific heat capacity, also known as the specific heat capacity, referred to as specific heat, is the heat capacity of a unit mass of a substance, even if the unit mass of the object changes the unit temperature when the internal energy is absorbed or released. Specific heat capacity is a physical quantity that represents the thermal properties of a substance. The specific heat capacity of the soil may be larger, so it has a thermal insulation effect in winter, and the temperature of the water is hotter than the outside temperature below zero, and in the summer it is just the opposite.

Here's my thoughts, hehe, together**!

The well water is warm in winter and cool in summer, so people think that the well water temperature is higher in winter than in summer, but in fact it is the opposite. If you use a thermometer to measure the well water temperature in winter and summer separately, it is 3-4 lower in winter than in summer. What's going on?

People felt that the well water was warm in winter and cool in summer, relative to the temperature on the ground at that time. In the hot summer, the earth's surface is directly affected by the sun's irradiation and air currents, and the temperature rises quickly. The soil in the ground can only absorb heat from the atmosphere through the upper layer of soil, and because the soil transfers heat very slowly, the temperature in the deep underground is lower than the temperature in the ground, so the temperature of the well water is lower than the temperature on the ground.

If you lift the well water to the ground, it feels very cold. In the cold winter, the temperature on the ground drops quickly, often below 0, and the water on the surface of the lake freezes. Since the soil deep underground cannot dissipate heat directly into the air, the temperature of the underground does not change much, and the temperature of the well water is higher than that on the ground.

At this time, when the water is lifted to the ground, it feels hot. Wells, there have been since ancient times. In the countryside, in small towns, there are many wells, which are a sign of people's use of groundwater.

Of course, well water can not be directly drunk (except for washing), it contains a lot of impurities, and must be precipitated with alum before it can be boiled and drunk. Anyone who has used well water has had the experience that the well water is "warm in winter and cool in summer". Does the well water automatically adjust the temperature?

No, the well water is warm in winter and cool in summer, and it is not that the well water itself is really warmer in winter and cooler in summer. In fact, the temperature of the well water does not change much throughout the year. The main reason is that the water under the ground is very little affected by changes in the temperature above the ground.

The temperature of the well water in summer and the well water in winter varies between 3 and 4 degrees Celsius at most. On the ground, the temperature in summer and winter varies greatly. In winter, the temperature on the ground drops very low, and the well water, which does not change much, is much warmer than the air on the ground, so when we touch it, we feel that it is warm.

On the other hand, in the summer, when the temperature on the ground rises very high, the well water is much cooler than the air on the ground, so when we touch it, it feels cool. It's not just well water that gives people a feeling of being warm in winter and cool in summer. It's the groundwater, the caves, the cellars, it's all like this.

Taking advantage of this, fruits and vegetables can be stored in the cellar in the winter to prevent frost damage, and in the summer to prevent corrosion.

In fact, the reason is very simple, that is, what you feel is your direct feeling, because the water temperature is higher than the air temperature in winter, so your hand that has adapted to the temperature feels that the temperature of the water is hot, and in summer it is just the opposite!

Because you are using groundwater, the specific heat of the earth is smaller, that is, the change with temperature is not obvious, and the change of groundwater blocked by it with temperature is not obvious In summer, the surface temperature is high, and the underground well water is more than ten degrees lower than the surface temperature, so it feels cool to the touch; In winter, the surface temperature is very low, and the underground well water does not change much by the surface temperature, so it will be more than ten degrees higher than the outside temperature, and it feels warm

The temperature difference between the ground and the ground does not change much, in fact, the temperature in summer and winter is about the same, but because the surface is hot in summer, you will feel that the well water is cold, and when the surface is cold in winter, you will feel that the well water is hot. Hope it helps.

Water also has a temperature, it is hot in summer, and the temperature of the water is low, so it feels like the water is cold, and in winter, the weather is cold, and the air temperature is lower than the water temperature, so it feels like the water is hot in winter.

Because the surrounding temperature is different, the surrounding temperature is hot in summer, so it feels like the water is cold, and in the winter, it feels cold, so it feels like the water is warm.

The well has a certain depth, like a protective film to prevent heat from entering from the outside, and vice versa in winter. This is the same as the cave.

In fact, the water temperature of the well water remains the same, about 20 degrees Celsius. In summer, when the outside temperature is high, through heat transfer, the temperature of our hands is also high, and of course the water feels cold at that time! In winter, the outside temperature is very low, and in the same way, when the temperature of the hand is low, it feels warm! 1

Because the temperature of the well water is constant. It's usually 4 degrees. So in the summer, the outside temperature is high, so it feels cold. In winter, the outside temperature is low, so it feels warm.

Answer: The temperature of the ground is not always consistent with the temperature on the ground, it should be said that the difference is too big, the temperature of the ground is due to the reception of the sun's light and heat, and at a certain depth of the ground (especially at the depth of the well water), the heat generated by the internal movement of the earth is not yet able to be conducted here, the temperature rise here is mainly dependent on the heat of the sun received by the surface, so it takes a long time for this heat transfer to be fully realized, that is to say, the surface is summer. It's still a harsh winter for the underground, and it's relatively good to wait until the underground"Summer"It was already winter on the ground, so it would appear"The well water is hot in winter and cool in summer"Thing.

Netizen opinion: Because the groundwater has a constant temperature all year round - 4, the water temperature is higher than the air temperature in winter, which makes people feel cool, and the opposite is true in summer.

Netizen insight: In the middle of summer, the sun is scorching and the heat is unbearable, but the deep underground is cool and comfortable.

Why is the temperature different above ground and underground? This is mainly related to the poor function of the soil to transfer heat. In the hottest part of summer, heat waves on the ground cannot be transmitted quickly to the deep layers of the soil, but can only be transmitted slowly downward.

The underground layer is close to the ground, and the arrival of the hottest period is close to the occurrence time of the hottest period on the ground. The farther away from the ground, the greater the difference between the time of the hottest period and the ground. In the same way, when the ground is the coldest, the cold wave cannot affect the deep soil layer very quickly, so the coldest period that occurs under the ground is much later than the ground, because the hottest time on the ground, the depth of the soil layer is cool and fast, and when the ground is the coldest, the deep soil layer is warm and pleasant, so the well water and the deeper groundwater are warm in winter and cool in summer.

Well water is groundwater, the temperature of winter and summer water is about the same, in winter the temperature on the ground is lower than the underground, so you feel hot, in the summer the temperature on the ground is higher than underground, so you feel that the water is cooler!

The specific heat of the earth is smaller, that is, the change with temperature is not obvious The groundwater blocked by it does not change significantly with the temperature The surface temperature is high in summer, and the underground well water is more than ten degrees lower than the surface temperature, so it feels cool to the touch; In winter, the surface temperature is very low, and the underground well water does not change much by the surface temperature, so it will be more than ten degrees higher than the outside temperature, and it feels warm

The temperature of the well water has not changed, but the outside temperature has changed, and it is more than 30 degrees Celsius in summer, and it is below 10 degrees or 0 degrees in winter, and the well water is about 10 degrees Celsius, so it is warm in winter and cool in summer.

It is an illusion of human sensation, the well water is 2 degrees Celsius, it feels cool in summer, and the temperature is low in winter, and the water at 2 degrees Celsius feels warm.

I came up with this question.

How dare you post on the Internet and ask?

Come to my office tomorrow.

It is because it is cold in winter, but not so cold that it freezes the groundwater, so the well water pumped up is much warmer than the weather, and the opposite is true in summer.

The temperature of the well water is relatively stable, the outside temperature is low in winter, the water will feel warm, and when there is no day in summer, the outside temperature in the spring is high, and the well water will feel cold.

In winter, when the air temperature is low, it feels warm, and in summer, when the air temperature is high, it feels cooler.

The water pipe is exposed to the air, and the temperature inside the water pipe drops quickly, so when you wake up in the morning and open the faucet, you find that the water is cold.

The water pumped from the groundwater to the water tower is warm, and the water tower also has a certain thermal insulation effect, and if the water flow in the water pipe is pointed to the nuclear loss, the water will not be so cold.