lrqak住宅室内采暖系统节能设计方案（Energy saving design scheme of residential indoor heating system）

1、住宅室内采暖系统节能设计方案（Energy saving design scheme of residential indoor heating system）3, the development prospect and control principle of household meteringAt present, the household metering system in our country has just started and most of them are in the trial stage. The indoor heating system for the

2、original single and vertical system, lack of independent adjustment ability, heat users is commodity without a deep understanding of heat, lack of awareness of energy saving, only the energy consumption of residential heating units in China area is about 2 times higher in advanced countries, and doe

3、s not facilitate the heating sector management. The household measurement of heating system is the direction of heat supply development, and is the only way to solve the problem of charging difficulty and realizing energy saving. With the improvement of peoples living standard, people are no longer

4、satisfied with food and clothing, but constantly pursue high-quality and high-grade life. In Jiangsu, Huaian, the annual new residential nearly one million square meters, these new residential mostly in the application of indoor heating, and Huaian city is currently the only municipal government has

5、 heating system in the West compound. As the indoor heating in this city has just started, it should be in the forefront of the promotion of heating type, and the implementation of a single household control heating mode is very promising.The characteristics of household metering heating system is c

6、ontrolled individually for each user that is independent of each household heating, using a water supply and return system, a table system, the user can separate regulation, shutdown, metering, does not affect other users. The basic method to achieve the goal of household metering is to control the

7、users independent system. The specific method is to set the regulating valve on the heat meter and radiator at each entrance of the water supply. By regulating the radiator, the room temperature of the heating room can meet the requirement of thermal comfort of the human body. The method of adjustin

8、g the radiator is mainly to control the heat dissipation of the radiator so as to meet the requirement of the room temperature. The current regulation is achieved mainly depends on individual radiator radiator hot water flow into the flow change, but must not affect the whole supply regulation metho

9、d in radiator regulation, is mainly controlled by the heat dissipation, to meet the temperature requirements. The current regulation is achieved mainly depends on the individual radiator method changes into the flow radiator water flow, but must not affect the hydraulic stability of heating system i

10、n the radiator heating system regulation, so to improve the regulation and control measures and a high level of operation and management. Otherwise, it is difficult to realize the household metering in real sense.4, suitable for household metering heating system4.1 single regulation heating system4.

11、1.1 single tube horizontal series systemSingle pipe horizontal cascade system is a common heating system. The method is to set up a total supply and return system (called large system) in each residential unit, and each layer of users is an independent small system. The total supply and return water

12、 riser pipe in the kitchen by the stairs, each layer of supply and return water in contact with the large system (each layer only households), and adjust the valve is shut off and heat metering system in the small entrance pipeline, so that the household heat metering and charging. The advantages of

13、 this system are: vertical riser wear floor, does not affect the wall decoration; the shortcoming is: can not control room temperature; each radiator shall air valve; pipeline, the balcony must pass. (4.1.2 single tube horizontal crossing systemFig. 3. The schematic diagram of the system is the same

14、 as that of the single tube horizontal series system. A large system is used to set up the supply and return risers of the system in the pipeline well. In this design, the number of three valves corresponding to the number of radiator groups shall be added, and the maximum flow to control the radiat

15、or shall be 30% of the circulating flow. The advantages of this method are: to achieve room temperature control; vertical riser, does not affect the wall decoration; the shortcoming is: ancillary equipment in the pipeline (three valve); pipeline door, balcony should handle each radiator cold air val

16、ve shall be provided.4.2 double pipe heating system4.2.1 double riser parallel systemFor the double pipe parallel system, users of any layer can adjust the medium flow as long as the regulating valve is added on the branch pipe of the radiator, so as to satisfy the requirement of the user for therma

17、l comfort and realize the energy saving. But this adjustment is in use, should consider the following questions: (a) in the number of floors too prone to the phenomenon of serious vertical imbalance, the vertical height of not more than three layers is appropriate, practical restrictions. (b) the nu

18、mber of risers across the floor increases. (c) applies only to the system adjustment for the installation of heat distribution tables, mainly by controlling the heat dissipation of the radiator to achieve room temperature requirements. The current regulation is achieved mainly depends on the individ

19、ual radiator method changes into the flow radiator water flow, but must not affect the hydraulic stability of heating system in the radiator heating system regulation, so to improve the regulation and control measures and a high level of operation and management.4, suitable for household metering he

20、ating system4.1 single regulation heating system4.1.1 single tube horizontal series systemSingle pipe horizontal cascade system is a common heating system.The method is to set up a total supply and return system (called large system) in each residential unit, and each layer of users is an independen

21、t small system. The total supply and return water riser pipe in the kitchen by the stairs, each layer of supply and return water in contact with the large system (each layer only households), and adjust the valve is shut off and heat metering system in the small entrance pipeline, so that the househ

22、old heat metering and charging. The advantages of this system are: vertical riser wear floor, does not affect the wall decoration; the shortcoming is: can not control room temperature; each radiator shall air valve; pipeline, the balcony must pass.4.1.2 single tube horizontal crossing systemThe same

23、 horizontal pipe series system, with a large system, the system can supply and return pipe set in the pipe well. In this design, the number of three valves corresponding to the number of radiator groups shall be added, and the maximum flow to control the radiator shall be 30% of the circulating flow

24、. The advantages of this method are: to achieve room temperature control; vertical riser, does not affect the wall decoration; the shortcoming is: ancillary equipment in the pipeline (three valve); pipeline door, balcony should handle each radiator cold air valve shall be provided.4.2 double pipe he

25、ating system4.2.1 double riser parallel systemFor the double pipe parallel system, users of any layer can adjust the medium flow as long as the regulating valve is added on the branch pipe of the radiator, so as to satisfy the requirement of the user for thermal comfort and realize the energy saving

26、. But this adjustment is in use, should consider the following questions: (a) in the number of floors too prone to the phenomenon of serious vertical imbalance, the vertical height of not more than three layers is appropriate, practical restrictions. (b) the number of risers across the floor increas

27、es. (c) applies only to systems that install heat distribution tables.4.2.2 horizontal dual pipe systemThe design scheme of double level, can avoid the double riser parallel system of vertical imbalance, and the system can realize an independent system for household heat meter installation, can real

28、ize the regulation of individual radiator. Any layer users can conveniently adjust the medium flow through the indoor control valve, so as to achieve a comfortable room temperature, and to achieve the purpose of saving energy, and does not affect other users of heating, but the system should be adde

29、d and the radiator group number corresponding to the number three valve. The advantages of the scheme that the problem of vertical imbalance of heating system is not easy to solve can be greatly improved; room temperature control, control performance is better than the single pipe system; wall verti

30、cal riser, does not affect the disadvantages are: indoor decoration; the lower part of the radiator for return pipe hidden door, the balcony is not difficult; pipeline good processing; cold air valve shall be installed on each radiator5, heating system design should pay attention to the problemAltho

31、ugh the household metering system has been effectively promoted in the new residential district, there are some problems in the heating system design, building design, instrument selection and management.5.1 heating system heat load calculation and indoor radiator layoutHeat load calculation is the

32、basis of heating system design, the design for fear of heating is not blindly increase the hot load value, so that the radiator installation area is too large, will not be conducive to the regulation of temperature control valve on the radiator pipe, the heat index should choose a reasonable estimat

33、ion method. The indoor radiator location to a reasonable layout, indoor level pipeline will increase, with the existing pipeline space, the influence of interior decoration, furniture layout and balcony doors, difficult to deal with such problems.5.2 requirements for heat transfer performance of bui

34、lding materialsCan the new building materials meet the requirements of modern energy-saving rooms, that is, the heat transfer performance of building materials is ideal. Heating and heat loss of buildings is mainly constituted by the heat retaining structure, accounting for about 73%77%, followed by

35、 the penetration of heat through the air gap of doors and windows, accounting for about 23%27%, in the heat wall accounted for 23%34%, thus improving the building insulation performance will reach a good energy saving effect. In addition, the calculation shows that for a non heating room from around

36、 the room to obtain the heat transfer can be maintained at 1214 at room temperature, other users have nearly 1/41/5 of the heat to the room, other users will pay more for this part of the heat fee is not reasonable. Therefore, it is necessary to strengthen the house building structure 5.3 heat insulation performance parameters correction and meter checking problem because the envelope tenants are located, different, there must