When is the heating time in all regions of the country in 2018? The frequent activity of cold air makes the temperature of many cities drop suddenly, as if it was a cold winter overnight. Let's take a look at the latest heating schedule in 2018-2019.
Heating schedule of all regions in 2018
Generally, it is fixed from November 15 to March 15 of the next year. In case of special weather, the heating will be postponed in advance. Recently, as the weather is getting colder and colder, heating has been implemented in northern China. The specific heating schedule is as follows:
Beijing
Beijing heating water test time in 2018: mid October
Heating time in Beijing 2018-2019: November 15, 2018 to March 15, 2019 (legal heating time)
Tianjin
Expected November 15, 2018
Heating time in Anhui 2018-2019:
Normal heating on November 15, trial heating on November 7, subject to the time issued by the government.
Shandong
Heating time: November 15, 2018 to March 15, 2019.
2018-2019 Shaanxi heating time:
Heating time: November 15, 2018 to March 15, 2019.
Gansu
The legal time of heating in Lanzhou is from October 20 to April 10 of the following year, and the heating time is 6 months; the municipal government can adjust the heating time appropriately according to the weather change.
Ningxia
The legal heating time of Yinchuan, Ningxia in 2018 is from November 1, 2018 to March 31, 2019.
Heilongjiang Harbin
It is expected to be officially heated on October 20, 2018
Changchun, Jilin
It is expected that the formal heating will be completed from October 20, 2018 to April 6, 2019.
Shenyang, Liaoning
From October 20 to 24, 2018, Shenyang heat supply will be put into cold state trial operation, and from October 25 to 29, 2018, hot state trial operation will be carried out to ensure that on November 1, the hydrant will be opened on time for heat supply, and the room temperature will reach above 18 ℃.
Principle of heating supply
The heating is divided into water heating and air heating. Generally speaking, the radiator refers to water heating, that is, heating circulating water by wall mounted furnace or boiler, then connecting to the radiator through pipe material, finally outputting the appropriate temperature through the radiator, forming the indoor temperature difference, and finally carrying out the thermal circulation to make the whole indoor temperature rise evenly. And heating is heating air. As soon as the cold air comes in, it is heated into hot air by the radiator. The rising of the hot air forms convection with the cold air in the room. The cold air circulates to the vicinity of the heating and is heated into hot air. The hot air circulates in the room, and the room is warm.
The cooling procedure is mainly divided into three parts
1. The heat medium in the heating system transfers the heat to the inner surface of the radiator through convection;
2. The inner surface of the heating system transmits heat to the outer wall by heat conduction;
3. The outer wall of the heating system transfers most of the heat to the air by convection and a small part of the heat to the indoor objects and people by radiation.