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Heating, as an indispensable heating device in cold regions, did not take shape until the end of the 19th century.
Prior to this, the northeast of our country was still using ondols for indoor heating, Northern Europe.
Use fireplaces more often as heating facilities. By the end of the nineteenth century, radiators.
The predecessor, the iron relief radiator, began to appear. Originating in Italy, the radiator soon became popular in Europe, then spread to the Soviet Union and from the Soviet Union to China. This radiator has both practical and aesthetic functions, so it quickly became popular.
By the 20s of the 20th century, such radiators had spread all over Europe.
Later, the Industrial Revolution.
Further development, the limitation of the industrial assembly line makes the aesthetic function of the radiator forced to give way to the C position of the stage, the simple style, the practical multi-residence cast iron radiator and the multi-residence steel radiator began to fly into the homes of ordinary people, and the style of the radiator is also basically stereotyped.
World war ii. Later, the copper plate radiator has become the protagonist of the new generation of heating by virtue of its beautiful appearance, heat dissipation, moderate and so on. In the seventies and eighties of the last century, people took into account the heat transfer coefficient of aluminum.
The big feature is that aluminum began to be used as a material for radiators, but because aluminum is not corrosion-resistant, steel has regained its dominant position in the radiator industry.
In the north of our country, heating is basically central heating, which is relatively polluting and convenient, but in more southern places, heating is not central heating, or air conditioning, or floor heating, all kinds of things. In the future, solar heating or wind heating may be used, which is less polluting and more convenient.
I believe that with the progress of science and technology, people's lives will be better in the future.
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It should be that in the early days of the founding of the People's Republic of China, there was heating in China, and the specific transmission location should have started from Europe, then to the Soviet Union, and then to China.
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It should have been there for a long time, and the ancient royal family used earth dragons for heating, that is, digging a passage under the ground of the room, and then after heating it, the whole room was very warm, which is equivalent to the current floor heating.
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The Forbidden City has a heating system, but it is different from the current heating, but relies on underground tunnels to transmit heating, so it should not be later than before the Ming Dynasty.
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Underground stoves, this is the prototype of floor heating. Public baths were available in ancient Rome and in the homes of the wealthy. At the end of the 18th century, Scottish inventor James Watt installed the first water vapor heating system in his factory on the outskirts of Birmingham.
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In ancient times, people used charcoal for heating. In the past, heating was supposed to be water vapor.
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It is often performed in film and television dramas, and there are conservatories in the court, and there should have been heating a long time ago, and it is said that some rooms have flues underground for heating.
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Heating, a complete set of heating systems, is only available in modern times, and devices similar to heating were available in the Qing Dynasty, when they were used to keep warm.
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It only existed in the twentieth century, after all, a relatively complete water transmission system was needed, and in ancient times there was no running water, and heating could not be done.
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The heating should be similar to the age of the steam engine, and the ancient people used a warm kang or charcoal for heating.
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Ancient people generally burned charcoal for heating, and it should be a matter of the back of the barbarian when there was heating, and there should be no heating system in ancient times.
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October to November. China's heating demarcation line is located in the Qinling Mountains and the Huai River near 33 degrees north latitude, and its history dates back to the 50s of the last century, when China installed a central heating system for urban residents with the assistance of the Soviet Union. However, at that time, China was facing severe energy shortages, so the "Qinhuai Line", which is the dividing line between the north and south of China, became the boundary of central heating.
Introduction
On November 15, 2014, urban dwellers living north of the dividing line began to rejoice as China's largest district heating plant opened its boiler and sent a boiling stream of heat to thousands of households over the next four months. And those living south of that line – or even a stone's throw away – will experience a winter without any heating.
Today, as China's economy grows and living standards improve, the demarcation line is increasingly seen as "anachronistic" or "anachronistic." Some cities have even experienced widespread power outages due to the use of electric heaters by a large number of citizens at the same time. Some scholars believe that the outdoor temperature should be used as the decisive factor in judging whether the local area provides central heating.
Two years ago, some members of the Chinese People's Political Consultative Conference (CPPCC) also submitted proposals to expand central heating to the south, believing that China** already has the capacity to do so.
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It varies from place to place, but generally speaking, the period north of the Yellow River to within the Great Wall is from November 15 to March 15.
The specifics are different, for example:
A number of cities were selected and their heating hours are listed below.
Northeast Manchuria September 25 - May 15 7 and a half months Yichun October 1 - April 30 7 months.
Xilin Gol October 15 - May 15 7 months Tongliao October 20 - April 20 6 months.
Harbin October 20 - April 20 6 months.
Shenyang: November 1 - March 31, 5 months.
Hohhot, North China: October 15-April 5, 5 and a half months, Beijing, November 15-March 15, 4 months.
Jinan, East China: November 15-March 15, 4 months, Hefei, South China, December 5-March 5, 3 months.
Central Plains: Zhengzhou: November 15-March 15, 4 months, Northwest Gannan, October 15-May 15, 7 months, Urumqi, October 15-April 15, 6 months, Shihezi, October 15-April 15, 6 months.
Yining: October 20 - April 20, 6 months.
Bole October 15 - April 5 5 5 and a half months.
Lanzhou November 1 - March 31 5 months.
** November 1 - March 31 5 months.
Qingyang November 5 - March 25 4 and a half months.
Tianshui November 15 - March 15 4 months.
Xi'an November 15 - March 15 4 months.
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The heating time is different in different regions, with the Qinling Huai River as the geographical dividing line. Central heating is implemented in the areas north of the Huai River in the Qinling Mountains, and central heating is not implemented in the areas south of the Qinling Mountains. It is mainly related to the local latitude and the resulting temperature and climate conditions.
China's Mohe region has a long and cold winter, close to the Arctic Circle, and heating begins in early October every year.
Inner Mongolia, Heilongjiang and Jilin provinces started heating on October 20.
Liaoning, Beijing and other areas generally start heating from November 15.
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Most of them are on November 15 and March 15 of the following year, and the Northeast is longer!
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Beijing's 17-year heating time is from mid-November to mid-March, and the heating will also be different according to the weather changes at that time, for the reference of the landlord only.
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According to the normal working hours, the state regulations should be from November 15 to March 15 of the following year.
Heating refers to the supply of heat to the building and maintains a certain indoor temperature, which is a social service to solve the basic living needs of residents in northern China for winter heating. From November 7, 2020, Beijing began to start trial heating.
Hail related information:
Heating is the earliest building environment control technology developed by human beings. Since human beings know how to use fire, in order to resist the threat of cold to survival, they have invented heating methods such as ondol banquets, stoves, fire walls, and fire grounds, which are the earliest heating equipment and systems, and some are still being used today. Today, heating equipment and systems have made great progress in terms of human comfort and hygiene, the beauty and dexterity of equipment, the automatic control of system and equipment, the diversification of system forms, and the effective use of energy.
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When to heat, it needs to be based on the following conditions, as follows:
1. Central heating starts on November 15 of the current year and ends on March 15 of the following year. The specific heating regulations of the local lap shall prevail.
2. The standard temperature of central heating is 18 2; According to the physiological conditions of the human body to the temperature environment and the demand for pruning and determining, in the cold winter, due to the thermal insulation of the house, the indoor temperature is generally higher than the outdoor about 5, when the outdoor temperature is in 8, the indoor temperature can not be guaranteed to be above 12, the human body will produce a sense of cold, so our country will be the outdoor temperature boundary of heating positioning 8. When the temperature is lower than this, the central heating will be advanced or postponed free of charge, depending on the weather conditions.
3. The central heating system is huge and complex, starting and closing the heating system is a very cumbersome work, and it takes a considerable period of time for the heating to complete the system start-up gradually heating, so the heating time of the central heating can not be changed at will.
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What is the time to guess the heating time in Beijing in 2022?
Beijing heating time is expected: November 7, 2022 to March 15, 2023
In some elderly communities, schools and special places, the heating time will be appropriately extended according to the climate, so that the Dasui Pai Ran family can have a comfortable environment!
Beijing heating time.
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From 2022 to 2023, the state stipulates that the heating time is from November 15 to March 15 every year, and the start and end time of heating in each city in the national heating area, the time of early heating and delayed heating is determined by the relevant departments, according to the relevant national regulations, the people above the municipal level will judge whether to heat in advance and delay the heating according to the meteorological forecast, and the conditions for early heating are that the average daily temperature for 5 consecutive days before the start of heating is lower than 5, and heating can be provided in advance. The condition for delaying the heating shutdown is that the average temperature is lower than 8 for 5 consecutive days after the specified heating end date, and the heating shutdown can be delayed.
The following brings the heating times from 2022 to 2023 in various places as follows:
On October 10, the staff of the **** North Heat Source Plant of Xuyang Thermal Heating in Hohhot City were monitoring the heating situation. On the same day, in order to cope with the cold wave and the greatly cooled weather, the heating enterprises in Hohhot City, Inner Mongolia Autonomous Region, started heating in advance.
The start time of heating in Beijing is November 15, 2022, but I want to note that the people of the city can adjust the heating period time according to the actual situation such as meteorology. The latest news on October 11 that Beijing Heating Group, a subsidiary of Jingneng Group, has successively carried out water testing and suppression work.
Since October 9, 15 communities in Chengbei District, Xining City have been heated in advance. Combined with weather changes, the Chengbei District Urban Management Bureau encourages heating units to heat in advance, and 15 property communities such as Jinzuo Wini Valley and Jinye Family Garden will be heated from October 9. The Chengbei District Urban Management Bureau will continue to pay attention to the preheating and heating situation of the central heating community, and urge the heating unit to deal with various heating problems in a timely manner as soon as possible.
From November 15, 2022 to March 15, 2023, a total of 120 days, of which September 1 to November 10 is the normal payment time (business hours: 8:30-16:00 every day).
Legal basis
Article 27 of the Regulations on the Expropriation and Compensation of Houses on State-owned Land shall first compensate and then relocate the housing expropriation.
After the people at the city or county level who made the decision to expropriate the house compensate the expropriated person, the expropriated person shall complete the relocation within the relocation period agreed in the compensation agreement or the compensation decision.
No unit or individual may force the expropriated person to relocate by violence, threats or illegal means such as interrupting water supply, heat supply, gas supply, power supply and road traffic in violation of regulations. Construction units are prohibited from participating in relocation activities.
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Hot users in Yan'an New Area:
The heating work of the 2021 heating season has begun, and the details are as follows:
Heating period: November 1, 2020 to March 15, 2021.
Charging basis and **: Yan'an Municipal Price Bureau (2011) No. 173; 5 yuan per month for residents and January for non-residents.
2. The precautions for users who handle vacant house business are as follows (those who cannot be separated from heating will not be allowed to go through the procedures for stopping heat consumption):
Required procedures: Fill in the vacant house application and provide the original and copy of the receipt for payment of 70% of the property fee.
3. In order to alleviate the pressure of queuing for payment, our company will open online and offline payment channels from September 15, 2020, so that you can start paying without leaving home.
4. In order to ensure the normal use of heat, units and heat users with arrears hope to pay off the arrears of previous years in a timely manner, and handle the heating contract and payment matters this winter.
The above content reference: Encyclopedia - Heating.
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The state stipulates that the heating time is from November 15 to March 15 of the following year. The heating time of each province and city is different, which should be decided according to the geographical location and local regulations, and there is no heating period in the south, only in the north will there be heating. The specific heating time should be subject to the local situation.
There are the following times for reference:
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