Is it difficult to install a heating meter for each household?

After reading the answers of a group of non-professionals, I found it ridiculous. Let me say something.

First of all, there is no technical difficulty in installing the heat meter. The HVAC design code for civil buildings in China has long required the design and installation of household heat meters for civil buildings in central heating cities. Just to prepare for heating metering.

Second, the heat meter can realize household heat metering. There are several heat metering methods in China: household heat meter method, switching time area method, temperature method and heat distribution method. Generally, new residential apartment buildings are built by letting users use heat meters. Each household is equipped with a heat meter, and the amount of heat used is intuitive.

Third, the heat meter cannot improve the heating effect. Many people think that installing a heat meter can make the heating company improve the heating effect, which is unrealistic. Heat metering means that heating has really become a commodity, similar to water, electricity and natural gas. But heating is a special commodity, which is different from hydropower and natural gas. As long as the control valve is disconnected, water, electricity and natural gas will stop. But the heat is different. Your control valve is closed, but because of the heat transfer between households, the heat of neighbors will be transferred to your home. This is why many homes stop heating in winter, but the temperature at home is ok. This situation is commonly known as rubbing heat. Your home doesn't have heating, but your neighbors who have normal heating are in trouble, and they spend money but can't enjoy the corresponding heating temperature.

Fourthly, the heat meter is just an instrument, which needs to be used with the heating control device. This is just like the water meter needs the electric switch of the water valve, and the user has the right to control the heat independently. There is no need to waste energy by opening windows to dissipate heat like some families with good heating effect now.

Fifth, heat metering is beneficial to heat users. But heating companies are absolutely opposed to heat metering, especially household heat metering. Why? Every winter, the most profitable period for heating companies is when heating starts and ends. Before and after the Chinese New Year, general heating companies basically don't lose money or make money to maintain stability. Once heating is metered, heating companies can't make money as they do now. So heat metering is the cake of heating company.

Sixth, China has been engaged in heat metering for many years, but it has not been widely promoted. The heating company objected and the people did not understand. Tell a joke. In a heat metering pilot community, an aunt asked the staff of the heating company: There are two people in my family and five people next door. Why does my heat meter talk more than the one next door? People say why. There used to be a deputy minister of the Ministry of Housing and Urban-Rural Development, Chou Baoxing. He is an official who really promoted heat metering, but he also retired, and now no one pushes him.

Seventh, the current situation is that many newly-built residential quarters in the north in recent years have installed household heat meters. If something happens, why pretend? Because the specification requires it to be installed. Without installation, the quality supervision station will not pass. Since it is installed, why not use it? Because the heating company objected too loudly. Heating is a livelihood project and a monopoly operation. The heating in your house is not good Can you change the heating company to serve you? Definitely not. The government cannot offend all the heating companies. And now there is only one meter without valve for household heat metering. If the house is too hot, can I adjust the temperature like a faucet? Can't!

Eighth, and most importantly, there is no heat metering and charging method that is recognized by everyone. How much is a word? Can I apply for a house without heating at no charge? I don't think the interests of all parties can be consistent. Now, some residential areas in Beijing and Tianjin have realized household heat metering and charging. In most other areas, the installed household heat meter is just a decoration. In a few years, the battery in the instrument will be exhausted. In recent years, the country has not made great efforts to promote household heat metering, but has promoted more greenhouse projects to insulate the external walls of old residential areas, reducing the heat dissipation of buildings and improving the heating level in disguise.

I hope my answer will give you an idea of the current situation of heat metering in China.

If the government does not force it, it is impossible for one household to have one meter, which involves the interests of some people. Now heating has lost the public welfare of the government, and almost all of it is contracted to individuals.

It is not difficult to install a heat meter. For example, water, electricity and gas are all one meter per household. I don't see any difficulties in these enterprises. It depends on how the national government formulates rules for enterprises. There is no heating meter installed in the new building, and there is no acceptance certificate for the developer. Sales are not allowed! The old building has not been renovated and installed with one household and one meter heating, and the heating enterprises have withdrawn from the market and replaced the enterprises that have the ability to install and renovate one household and one meter!

It is feasible to install a heating meter, which is technically no problem and requires little investment. It can solve the contradiction, but it is not good for the heating party, and it is difficult to do it without government intervention. Looking back on the past, there were many contradictions before household metering and household metering. Although the voice of the masses is high, it cannot be solved for many years. Later, after the government intervened, the meter was divided into households, and the contradiction was solved.

There is no difficulty in installing the instrument itself. Now it's all household heating, which is very simple. But it's no use installing a meter. Unlike water and gas supply, heating can be calculated by quantity. Heating needs temperature. The same amount of hot water provides different temperatures at 50 and 70, and the indoor temperature is also different. It is troublesome and contradictory to measure like that, and heating units and users have endless things to talk about all day. Moreover, it can't increase income for heating units, and it will only solve contradictions endlessly. It is better to calculate labor directly according to the area, which saves worry.

Friends who ask this question are too professional or enthusiastic, and they are probably friends from the north. Nowadays, many newly-built residential areas have realized the installation of heat meters in one household, just like our water meters, electricity meters and gas meters. From the point of view of HVAC industry, there is no problem in technical realization, but there are many difficulties in actual operation, which are mainly reflected in high investment, many heating systems, many types of houses, complicated historical problems, and the performance of corresponding heat metering equipment. Here is a brief introduction from a professional perspective for your reference:

First, the investment is high. The initial investment of heat meters such as ultrasonic or electromagnetic heat meters is relatively high, and the installation cost of each household is also relatively high.

Second, there are various heating systems, mainly in three forms. For example, according to the different circulating power of the system, it can be divided into natural and mechanical circulating heating systems. Natural circulation system is a system that uses the density difference of fluid to circulate; Mechanical circulation system is a system that circulates by external water pump force. For example, according to the different supply and return water, it can be divided into single-pipe and double-pipe systems. In the hot water heating system of high-rise buildings, single-pipe and double-pipe mixed systems are often used. For example, according to the temperature of the heat medium, it can be divided into low-temperature and high-temperature heating systems. In our country, it is customary to call the temperature higher than 100 as high-temperature water, and the hot water lower than or equal to 100 as low-temperature water. Therefore, different heating systems are used in different areas, different buildings and different buildings, resulting in the problem that heat metering cannot be unified.

Third, there are various types of families. For example, the heat metering of the first floor and the top floor of a building is complicated, the heat consumption at the end and the top floor of the building is large, the heat transfer between households is different, and the envelope design of different buildings is different, which leads to the problem of how to correct the heat consumption fairly.

Fourth, the problems left over from history are more complicated, and the new building is easier to handle. After all, household heat metering can be implemented in accordance with Technical Specification for Heating Metering (JJ173-2009). However, the transformation of heating operation in old residential areas is more complicated and difficult. For example, the relevant provisions in Technical Specification for Heating Metering (JGJ 173-2009):

It can be seen that household heat metering methods include switching time area method, radiator heat distribution table method, household heat meter method and flow temperature method. Among them, on-off time and area method, radiator heat distribution meter method and household heat meter method are suitable for indoor household independent loop heating systems in new and existing houses; Radiator heat distribution meter method and flow temperature method are suitable for single pipe system in existing residential buildings; The radiator heat distribution table method is not suitable for floor radiant heating system. In the same heating station or district, the same household heat metering method should be adopted.

Fifth, the performance of the corresponding heat metering equipment. As we know, heat metering is the measurement of heat obtained by heating medium from heat source or heat consumed by users in urban central heating system. The formula is q1-2 = m (h1-H2) = ρ qv Δ h The heat meter shall meet the product standards such as heat meter (CJ 128-2007). The heat meter shall obtain the License for Manufacturing Measuring Instruments and the Type Approval Certificate of Measuring Instruments in People's Republic of China (PRC), and be qualified for the first time before installation.

Sixth, briefly introduce the characteristics of metering methods, and you will know that it is difficult to install heat meters in one household. Installing heating meters in households can achieve multi-purpose and multi-payment, less use and less payment, and no payment, which not only saves energy and money, but also benefits the country, the people and the family. However, it is still a long-term process to fully popularize and apply.

In short, our country is also actively promoting the implementation, such as the existing energy-saving demonstration cities and demonstration communities. Nowadays, the renovation of old residential areas is also in full swing. Although it is difficult to operate in reality, all walks of life are actively promoting its application, focusing on solving problems such as high investment, diverse heating systems, diverse apartment types, complex historical problems and the performance of corresponding heat metering equipment.

Whether charging by metering or charging by area, the quality of heating depends on the capacity of heating equipment. If you build a house alone without expanding the heating equipment, it is a small horse-drawn cart. Can you heat it? Moreover, is the cross section of the heat transfer tube enough? Is it intact? This directly affects the heating effect. If you charge according to the flow (temperature difference), it is that the heating equipment itself is not capable enough or there is something wrong with the pipeline. If the incoming water temperature is 20 30, your flowmeter will fly away, and the indoor temperature will not rise. Furthermore, heating companies buy heat from thermal power plants. In order to get the maximum benefit, they always do the whole thing. The heat is not released so much, and the residents can't get the corresponding heat. Of course, the residents can't heat up. ...

It is easy to install a heating flowmeter in every household, because China is the largest processing plant in the world. If it's a small horse-drawn cart, it won't be hot when it's installed.

Everything is in the interest, the key is who made the "sacrifice"!

Heating in winter is now mostly charged by area. For example, the building area of our home is 80 square meters. If the cost per square meter is charged according to 25 yuan, the heating fee paid in each heating season is 2000 yuan. Of course, this is only calculated according to some local standards. But many friends will reflect that it is unreasonable to calculate according to the area. Because some families have high temperatures and some families have low temperatures, they all want to use heat meters. So is the heat meter feasible? In this article, the household miscellaneous altar will answer the questions of heating heat meter for everyone.

Is it difficult to install a heat meter for a household heating? The personal view given by Huzatan is that it is not difficult to install a meter heat meter for each household. Of course, this is for the new house. Small and old houses are really difficult. Why is it not difficult to use a heat meter for new commercial housing? Personal views mainly include the following points.

(1), according to the requirements of the national energy-saving code, all new commercial houses in the north must be equipped with heat meters, and one meter for each household. If you know something about commercial housing at this stage, you will find such a new regulation, that is, when the main body of commercial housing is completed and accepted, a heat meter must be installed, otherwise it will not be accepted. From this perspective, it also shows that the country is also vigorously promoting the one-meter heat meter, so it is completely feasible to install the one-meter heat meter.

(2) Installation position of heat meter. For heat meters, they are all installed on the main pipes of heating, water supply and backwater. For example, newly-built commercial housing now has public pipe wells on each floor. There is a main pipe for heating, water supply and return water for each household in the water heating pipeline well. Then at this time, we installed a heat meter on the water supply pipeline, and then installed a temperature measuring probe on the return pipeline, which realized the installation of the heat meter. Therefore, the newly-built commercial housing now meets the installation heat meter.

(3) From the working mode of the heat meter, I personally think that the heat meter with one meter per household is also completely feasible. Because each household's one-meter heat meter is installed on the main water supply pipeline, the probe is installed on the main water return pipeline. It is measured by the temperature difference between the circulating flow of supply and return water and the water temperature. Therefore, after installing the heat meter, the heating used in our home at this stage can run normally and meet the installation conditions.

(4) The installation conditions of the heat meter are also determined, which actually meets the installation requirements. For the installation conditions of heat meter, besides the main backwater pipe, it is also necessary to provide power at a certain position. After that, make sure that the blood glucose meter is connected with a data cable. Because the current heat meters are all wired devices for remote data transmission. Therefore, our pipeline well can meet the setting of remote transmission function as long as there are sockets and vertical holes. Now, as long as there are pipeline wells, this condition is basically met, and the installation of heat meters is also met.

The above introduces the situation that the newly-built commercial housing meets the requirements of installing heat meters at this stage. But many friends don't use the installed heat meter, which means they don't know what practical function it has. Below, the household miscellaneous altar will briefly introduce the function of the heat meter.

① Introduction of heat meter. The heat meter basically adopts ultrasonic heat meter. According to our water supply pipes and return pipe, they have different calibers. For example, the most common residents use dn25. The installation method can be installed horizontally or vertically. And the commonly used flow rate of heat meter is generally 3.5m? Once every hour. The temperature range of the heat meter is 2~95. So houses like ours can use heat meters. The instrument can also be measured by installation.

② Function of heat meter. The main function of heat meter is to measure the heat consumed per unit time. Because our indoor heating ultimately consumes heat, and the heat meter can measure heat. In fact, it mainly depends on the flow of supply and return water and the temperature difference between supply and return water, and finally it is calculated according to the calculation formula of heat. In this way, the heat of our home per unit time is calculated. For example, the calories consumed in a day, and then the calories consumed in a quarter can also be calculated. This is also the most fundamental purpose of installing a heat meter.

③ detection function. It is only when we find that the indoor temperature is not high after heating at home that we can use the detection function of the heat meter. For the detection function of the design table, we can first observe the water supply temperature and backwater temperature displayed on the heat meter. For example, in our household radiator, the normal water supply temperature in winter should basically reach 55℃, and the return water should reach above 45℃. And if we install floor heating in our home, the water supply temperature should basically reach above 50, and the backwater should reach above 40. The other is to observe the temperature difference between water supply and backwater. The smaller the temperature difference between water supply and backwater, the better the indoor heating effect.

④ We can also look at the indoor water supply and return circulation through the heat meter. Because the effect of indoor heating is not only related to the temperature of supply and return water, but also related to the circulating flow of supply and return water. The greater the circulating flow, the better the heating effect of our room. We can also see it on the heat meter at this time. For example, the water supply and return circulation flow of our home has reached 1.0m? Every hour, it means that our indoor heating effect is very good. If the circulation flow is less than 0.5, it means that our indoor circulation situation is very poor. So at this time, we can check the indoor heating situation in time through the heat meter.

Personally, I think it is of great significance to install heat meter in heating system. Although charging by heat has not been implemented in China at this stage, it is also a trend. Because charging by heat can make the heat more reasonable. Therefore, if our house is a newly-built commercial house, we can open the pipeline well when inspecting the house, and there is a heat meter in the pipeline well. Everyone should simply learn how to use a calorimeter. For example, as mentioned above, we can watch indoor circulating flow, supply and return water temperature and so on in real time with a heat meter. Therefore, I personally think that the heat meter is very easy to use and easy to implement.

In the past, all the places where we lived were heat metering fees, and the average heating season was around 350 yuan. First, we copied the rice before heating, and then copied the rice after heating. Deducting the data before and after the heating station is the heat metering fee, and then subtracting the prepaid heat metering fee from the heat metering fee displayed by the instrument is the money returned to the user. The specific situation is unclear, that is, the unit price of a word is unknown.

The indoor temperature of heat metering is not particularly high, so it is no problem to wear sweatshirts and long pants indoors. The first floor is cold, and a sweater vest should be added to the room when it is cold at night.

Heat metering is of great benefit to energy saving. Every household should know how to consume, and don't open the window for ventilation because it is too hot, which will cause a lot of gas loss. Heat metering has also cut off the problem that some people maliciously discharge hot water from the heat pipe.

Relevant state departments should study more policies and how these heating companies maintain the relationship between heating and interests. If metered heating is implemented, the profits of heating companies will definitely be reduced, especially now that not all communities implement heat metering, and the data will be biased. Therefore, the Ministry of Housing and Urban-Rural Development should adopt a pilot method to implement heat metering charges in all heating companies in a certain area of a city, draw a conclusion by referring to all the data, and then conduct research and analysis to find a reasonable solution. In short, in order to save energy, heat metering and charging should be implemented. Benefiting the country and the people is also beneficial to enterprises.