Users who are closer to the heat source plant and heat exchange station get hotter, but some remote users may not meet the standard
How to solve the problem of "near hot and far cold" and "hot up and cold down" during the heating season
Heating is a topic that cannot be avoided every winter in the north.
In particular, the traditional heating system relies on hot water to circulate in the internal pipe network of residential quarters and shops. Users who are closer to the heat source plant and heat exchange station get hotter, and some remote users may not meet the standard.
How to solve the problem of "near hot and far cold" and "hot up and cold down"?
Recently, the reporter visited several heating companies in Shenyang to find solutions.
Current technology cannot achieve a unified standard temperature
"19.8℃! My home is on the first floor, and other people's homes are higher than mine." said Liu Li, a resident of Unit 1, Building 17, Jinshawan Community, Heping District, Shenyang during the heating start period on October 31.
Shenyang Xiangyun Thermal Heating Co., Ltd. is responsible for the heating of Liu Li's house.
The company’s deputy general manager Na Wei explained that only by intelligently regulating the various heating links of the heat source, heating network, and terminal can precise heating that is not too hot but cold can be achieved, and the terminal where the user’s home is located will be affected by the basic conditions of the building. .
For example, the temperature of users who have attached thermal insulation walls and cleaned indoor heating pipes will be high; affected by heat transfer between households, whether users upstairs and downstairs open the plug for heating will also affect the user's indoor temperature.
"With the current level of technology, it is impossible to adjust all houses to a uniform standard temperature." Na Wei, who has been engaged in heating for more than 20 years, said that on-demand heating requires precise heating. This is in addition to basic building conditions, In addition to the level of heating technology, it is also related to many factors such as the financial level of the heating company.
According to Wang Yi, deputy director of the Heating Development Department of Shenyang Public Utilities Development Center, the heating area in Shenyang this year is 349 million square meters, with a total of 3.59 million households.
Such a huge heat source network is provided by hundreds of heating companies. The scale and financial resources of the heating companies are different, and the new and old regional pipe networks and the maintenance progress will affect the user's room temperature.
Below 18℃, "alarm" within 20 minutes
In order to solve the problem of "near heat and far cold" and "hot up and cold down", in 2018, Shenyang launched a smart heating supervision and early warning command and dispatch platform.
Up to now, all 2,600 heat exchange stations have been monitored.
During the heating operation period, the platform can monitor the operating conditions of the heat source plant, heat exchange station (return) water temperature, pressure, etc. and the room temperature of some users online, and command and dispatch the heating work at any time based on the monitoring data.
At 17:00 on October 31, on the Shenyang Smart Heating Supervision Platform, the reporter saw that data from all the heat source plants of the heating enterprises in Shenyang was transmitted in real time.
At the same time, room temperature data of 1,710 households in Shenyang have also been uploaded.
"Data will be uploaded every 20 minutes. Once it drops below 18°C (minimum heating temperature), the early warning section will "alarm" and urge heating companies to let cool users heat up." Wang Yi said.
According to industry insiders, the smart heating big data algorithm should take into account factors such as outdoor temperature, wind, wind direction, humidity, house type, orientation, and user comfort temperature, which may need to be installed in each house. The room temperature collector accurately measures according to the current outdoor weather conditions and other factors, and obtains the heating temperature required by each building, and automatically issues instructions to adjust the valve pressure and flow rate of the heating pipe network at the entrance of each unit to achieve various The regional heat distribution is balanced, but the existing technology has not yet reached this level.
Precise heating is the future development direction
"The first thing to solve for precision heating is the quality of the heating, that is, the cooling should not be too cold. On the basis of improving the quality of heating, energy saving and environmental protection should be taken into account, and the heat should not be too hot." Deputy Liaoning Xiangsheng Energy Technology Co. General Manager Song Yongjun said.
In 2014, his research was applied to business operations. He and his team have inserted "wisdom wings" for nearly 20 heating companies in Shenyang.
The basic situation of each enterprise is different. Some have saved costs, and some have not saved, but the heating effect has been greatly improved.
Wang Yi said that Shenyang City has formulated the "Shenyang City Heating Management Department Assessment Program" and "Shenyang City Heating Unit Assessment Program" to assess the heating management departments and heating units, including basic management, heating preparation, and operation. Management etc.
Among them, the assessment results of heating units will be used as an important basis for interviews, credit information management and industry appraisals.
During the heating operation period in winter, the Shenyang municipal heating management department will conduct real-time online monitoring of the operating parameters of each heating unit, combined with the user's demand, and the heating unit that fails to meet the standard for three consecutive times and has a high demand rate Announce criticisms and rectify within a time limit; for two consecutive rectifications that are not in place, the media will be exposed; for more than three rectifications that are not in place, credit punishment will be imposed.
Na Wei said that with the development of smart heating, in the future, residents can use smart meters to adjust the indoor temperature in real time, and can also adjust the indoor temperature in advance by preset temperature.
Liu Xu