CN111926945A - Method for reducing ventilation volume of heating equipment chamber and heating equipment chamber - Google Patents
Method for reducing ventilation volume of heating equipment chamber and heating equipment chamber Download PDFInfo
- Publication number
- CN111926945A CN111926945A CN202010870387.1A CN202010870387A CN111926945A CN 111926945 A CN111926945 A CN 111926945A CN 202010870387 A CN202010870387 A CN 202010870387A CN 111926945 A CN111926945 A CN 111926945A
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- heating
- heating equipment
- wall body
- heat
- chamber
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- 238000010438 heat treatment Methods 0.000 title claims abstract description 65
- 238000009423 ventilation Methods 0.000 title claims abstract description 22
- 238000000034 method Methods 0.000 title claims abstract description 20
- 238000009413 insulation Methods 0.000 claims abstract description 61
- 230000005855 radiation Effects 0.000 claims abstract 2
- 229910000831 Steel Inorganic materials 0.000 claims description 13
- 239000010959 steel Substances 0.000 claims description 13
- 239000000463 material Substances 0.000 claims description 8
- 235000019362 perlite Nutrition 0.000 claims description 6
- 239000010451 perlite Substances 0.000 claims description 6
- 238000005253 cladding Methods 0.000 claims description 3
- 239000010410 layer Substances 0.000 claims 9
- 238000010276 construction Methods 0.000 claims 2
- 238000009434 installation Methods 0.000 claims 2
- 239000011241 protective layer Substances 0.000 claims 2
- 230000017525 heat dissipation Effects 0.000 abstract description 6
- 230000002285 radioactive effect Effects 0.000 abstract description 6
- 238000001704 evaporation Methods 0.000 description 35
- 230000008020 evaporation Effects 0.000 description 35
- 230000000694 effects Effects 0.000 description 4
- 230000001502 supplementing effect Effects 0.000 description 4
- 239000007788 liquid Substances 0.000 description 3
- 238000004321 preservation Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000004364 calculation method Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 239000012774 insulation material Substances 0.000 description 2
- 239000002925 low-level radioactive waste Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000013589 supplement Substances 0.000 description 2
- 238000002076 thermal analysis method Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000006378 damage Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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Classifications
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B2/00—Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/74—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
- E04B1/76—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls specifically with respect to heat only
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H5/00—Buildings or groups of buildings for industrial or agricultural purposes
- E04H5/02—Buildings or groups of buildings for industrial purposes, e.g. for power-plants or factories
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/02—Ducting arrangements
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F7/00—Ventilation
- F24F7/04—Ventilation with ducting systems, e.g. by double walls; with natural circulation
- F24F7/06—Ventilation with ducting systems, e.g. by double walls; with natural circulation with forced air circulation, e.g. by fan positioning of a ventilator in or against a conduit
- F24F7/08—Ventilation with ducting systems, e.g. by double walls; with natural circulation with forced air circulation, e.g. by fan positioning of a ventilator in or against a conduit with separate ducts for supplied and exhausted air with provisions for reversal of the input and output systems
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Physics & Mathematics (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Electromagnetism (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Building Environments (AREA)
Abstract
The invention discloses a method for reducing the ventilation volume of a heating equipment chamber, which comprises the following steps: the heat insulation layer (1) is laid on the inner wall of the wall body of the heating equipment chamber, so that heat radiated by a heating body in the heating equipment chamber is prevented from being absorbed by the wall body of the heating equipment chamber. Correspondingly, still disclose the heating equipment room of radioactive factory building, including the wall body, the wall body includes the concrete structure layer, still includes the insulating layer that can avoid the heat of heat-generating body radiation to be absorbed by the wall body, and the insulating layer is laid on the inner wall of concrete structure layer. By adopting the method, the ventilation quantity of the heating equipment chamber can be safely and effectively reduced, and the heat dissipation loss of the heating body can be reduced.
Description
Technical Field
The invention belongs to the technical field of nuclear industry, and relates to a method for reducing ventilation volume of a heating equipment chamber and the heating equipment chamber.
Background
In the field of nuclear industry, evaporation equipment with high heat productivity exists in evaporation equipment rooms in medium-low-level waste liquid treatment plants, and based on the requirement for rapidly finding leakage of the evaporation equipment, the existing method is that heat preservation measures are not taken for the evaporation equipment, so that a large amount of heat is released into the evaporation equipment rooms, the evaporation equipment rooms need to continuously conduct out internal heat through ventilation, otherwise, the temperature of concrete enclosing structures forming the evaporation equipment rooms exceeds the temperature resistance limit, the structural performance of the concrete enclosing structures is damaged, and potential safety hazards are caused.
At present, the ventilation of the heating equipment chamber adopts a mechanical forced ventilation cooling method, because the evaporation equipment chamber is the heating equipment chamber, in order to reduce the heat loss of the evaporation equipment, the room temperature of the evaporation equipment chamber needs to be improved as much as possible, meanwhile, the requirement that the room temperature does not exceed the temperature resistance limit value of concrete is also considered, and the ventilation volume of the evaporation equipment chamber is generally calculated and designed according to the requirement of controlling the exhaust air temperature to be 60 ℃. However, the ventilation scheme has the problems of large ventilation air quantity, large heat dissipation loss of the whole evaporation equipment chamber, large size of an exhaust air pipe, difficult pipeline arrangement and the like.
Disclosure of Invention
The invention aims to solve the technical problem of providing a method for reducing the ventilation volume of a heating equipment chamber and the heating equipment chamber aiming at the defects in the prior art.
In order to solve the technical problems, the invention adopts the following technical scheme:
a method of reducing heating equipment compartment ventilation comprising the steps of:
the heat insulation layer is laid on the inner wall of the wall body of the heating equipment chamber, so that heat radiated by a heating body in the heating equipment chamber is prevented from being absorbed by the wall body of the heating equipment chamber.
Wherein, the wall body of the heating equipment chamber adopts a concrete structure, and the insulation of the heat insulation layer can ensure that the temperature of the concrete structure is always kept not more than 65 ℃.
Preferably, the heat insulation layer can be combined with a concrete structure, the using temperature of the heat insulation layer is higher than the highest temperature of the heating body, and the heat conductivity of the heat insulation layer is not more than 0.05W/m.
Preferably, the heat insulation layer is made of expanded perlite.
Preferably, after the heat insulation layer is laid on the inner wall of the wall body of the heating equipment room, the steel laying surface is arranged on the heat insulation layer.
The invention also provides a heating equipment room of the radioactive factory building, which comprises a wall body, wherein the wall body comprises a concrete structure layer, the wall body also comprises a heat insulation layer capable of preventing heat radiated by the heating element from being absorbed by the wall body, and the heat insulation layer is laid on the inner wall of the concrete structure layer.
Preferably, the heat insulation layer is made of a material which can be combined with concrete, has the use temperature higher than the highest temperature of the heating body and has the heat conductivity not exceeding 0.05W/m DEG C.
Preferably, the heat insulation layer is made of expanded perlite.
Preferably, the wall body further comprises a steel face, and the heat insulation layer is located between the concrete structure layer and the steel face.
The method of the invention has the following beneficial effects:
the heat insulation layer is attached to the inner wall of the wall body of the heating equipment room, so that the concrete structure of the equipment room can be protected from heat insulation, heat radiated by a heating body in the heating equipment room cannot be directly absorbed by the wall body of the concrete structure, and the temperature of the concrete structure of the wall body is not more than the temperature resistance limit value of 65 ℃.
Moreover, after the heat insulation layer is added on the wall body, the heat protection capability of the concrete structure of the wall body is improved, the structural performance of the wall body is ensured not to be damaged, and the air temperature in the evaporation equipment room can be effectively improved, so that the heat dissipation loss of the heating body can be reduced; simultaneously can reduce the ventilation volume of the heating equipment room, reduce the tuber pipe size to reduce the tuber pipe and arrange the degree of difficulty.
Experiments show that the method can keep the room temperature of an evaporation equipment room (a heating equipment room) to reach 80-90 ℃, and the size of an exhaust air pipe can be reduced by 1/3.
The method is particularly suitable for the ventilation and cooling of the evaporation equipment chamber in a medium-low level waste liquid treatment plant in the nuclear industry.
Drawings
Fig. 1 is a schematic structural diagram in embodiment 1 of the present invention.
In the figure: 1-heat insulation layer, 2-steel coated surface, 3-concrete structure layer, 4-evaporator, 5-air supply pipeline and 6-air exhaust pipeline.
Detailed Description
The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
Aiming at the problems of large ventilation volume, large overall heat dissipation loss, large size of an exhaust air pipe, difficult pipeline arrangement and the like of the existing heating equipment chamber, the invention provides a method for reducing the ventilation volume of the heating equipment chamber, which comprises the following steps: the heat insulation layer is laid on the inner wall of the wall body of the heating equipment chamber, so that heat radiated by a heating body in the heating equipment chamber is prevented from being absorbed by the wall body of the heating equipment chamber. Like this, not only improved the hot protective capacities of wall body, guaranteed that the structural performance of wall body can not suffer destruction, but also can effectively improve the indoor air temperature of evaporation equipment, reduce the heat dissipation loss of heat-generating body, can also reduce the air volume of heating equipment room, reduce the tuber pipe size to reduce the tuber pipe and arrange the degree of difficulty.
Correspondingly, the invention also provides a heating equipment room of the radioactive factory building, which comprises a wall body, wherein the wall body comprises a concrete structure layer, the wall body also comprises a heat insulation layer capable of preventing heat radiated by the heating element from being absorbed by the wall body, and the heat insulation layer is laid on the inner wall of the concrete structure layer.
Example 1:
the method for reducing the ventilation volume of the heating equipment room in the embodiment is mainly applied to the heating equipment room, in particular to an evaporation equipment room, and an evaporator 4 (shown in figure 1) is arranged in the evaporation equipment room. Wherein the evaporation equipment chamber has an area of 667m2The evaporator has a (volume) surface area of 140m2The maximum temperature of the evaporator 4 was 143 ℃.
The method specifically comprises the following steps:
and S1, laying a heat insulation layer on the inner wall of the heating equipment room to prevent heat radiated by a heating body in the heating equipment room from being absorbed by the wall of the heating equipment room.
In this embodiment, the wall of the evaporation equipment chamber is of a concrete structure, and since the heat insulation layer 1 is laid on the inner wall of the wall, the heat insulation layer 1 plays a role in heat insulation and protection of the concrete structure, so that the concrete structure and the radioactive heating element (evaporator 4) can be effectively isolated, and the temperature of the concrete structure is always kept not more than the temperature resistance limit of 65 ℃.
The material of the heat insulation layer 1 is selected, the heat insulation layer 1 is required to be bonded with a concrete structure, the service temperature of the heat insulation layer 1 is higher than the highest temperature (143 ℃) of the evaporator 4, the density of the material is light, and the heat conductivity of the material is not more than 0.05W/m DEG C; in addition, because the evaporation equipment chamber has no water and the temperature in the evaporation equipment chamber is lower than the temperature of the industrial furnace and the thermal equipment pipeline, the heat preservation and insulation materials adopted by the common industrial furnace or the thermal pipeline can be used, for example, the heat insulation layer 1 can be made of expanded perlite.
The thickness of the heat insulation layer 1 can be obtained through theoretical calculation and thermal analysis of Fluent simulation software according to the performance parameters of the heat insulation layer, the surface temperature of the evaporator and the temperature of the inlet airflow. The thickness of the heat insulation layer is preferably 50-200 mm, for example, 50mm, 80mm, 100mm, 150mm, 200 mm.
And S2, laying a heat insulation layer on the inner wall of the wall body of the heating equipment room, and then arranging a steel laying surface on the heat insulation layer.
The steel facing 2 is primarily intended to facilitate collection of radioactive liquid after leakage. A thermal insulation layer 1 is arranged between the concrete structure and the steel cladding 2.
Thus, in this embodiment, the thickness of the thermal insulation layer 1 is determined as follows:
since the maximum distance between the steel-clad surface 2 and the concrete structure is 150mm, and the thermal insulation effect is more remarkable as the thermal insulation layer 1 is thicker, the thickness of the thermal insulation layer is generally determined to be 150mm, and then whether the temperature of the concrete structure exceeds the limit of 65 ℃ after the thermal insulation layer with the thickness is adopted can be calculated. If the thermal insulation layer cannot reach 150mm due to limited space or other reasons, the thickness of the thermal insulation layer is determined according to the available maximum space, and whether the temperature of the concrete structure exceeds 65 ℃ is checked.
The wall body of the evaporation equipment room is provided with an air supplementing pipeline 5 and an air exhausting pipeline 6, air quantity is introduced from an adjacent room of the evaporation equipment room through the negative pressure effect of the evaporation equipment room to supplement air for the evaporation equipment room, and the air supplementing temperature is 20-32 ℃; in addition, air is drawn from the evaporation equipment chamber through a fan so as to exhaust air, and the exhaust air temperature is 80-90 ℃.
The evaporation equipment room with the heat insulation layer can obtain higher indoor temperature under the condition of less ventilation quantity, thereby reducing the heat dissipation loss of the evaporator and achieving the effect of energy conservation. In addition, because the ventilation quantity is reduced, the diameter of the air pipe can be reduced, thereby being beneficial to the arrangement of the air pipe and reducing the model of the air exhaust filtering equipment.
The method can also be popularized and applied to ventilation of other factory buildings with larger heat productivity.
Example 2:
as shown in fig. 1, the present embodiment discloses a heating equipment room of a radioactive factory building, which comprises a wall body, wherein the wall body comprises a concrete structure layer 3 and a heat insulation layer 1, the heat insulation layer is laid on the inner wall of the concrete structure layer 3, and the heat radiated by a heating element can be prevented from being absorbed by the concrete structure layer 3, so that the temperature of the concrete structure layer 3 is always kept not more than the temperature resistance limit value 65 ℃.
The material of the heat insulation layer 1 is selected, the heat insulation layer 1 is required to be bonded with a concrete structure, the service temperature of the heat insulation layer 1 is higher than the highest temperature (143 ℃) of the evaporator 4, the density of the material is light, and the heat conductivity of the material is not more than 0.05W/m DEG C; in addition, because the evaporation equipment chamber has no water and the temperature in the evaporation equipment chamber is lower than the temperature of the industrial furnace and the thermal equipment pipeline, the heat preservation and insulation materials adopted by the common industrial furnace or the thermal pipeline can be used, for example, the heat insulation layer 1 can be made of expanded perlite.
The thickness of the heat insulation layer 1 can be obtained through theoretical calculation and thermal analysis of Fluent simulation software according to the performance parameters of the heat insulation layer, the surface temperature of the evaporator and the temperature of the inlet airflow. The thickness of the heat insulation layer is preferably 50-200 mm, for example, 50mm, 80mm, 100mm, 150mm, 200 mm.
The wall body further comprises a steel clad surface 2, and the steel clad surface 2 is arranged on the heat insulation layer 1, namely the heat insulation layer 1 is arranged between the concrete structure layer 3 and the steel clad surface 2.
The wall body of the evaporation equipment room is provided with an air supplementing pipeline 5 and an air exhausting pipeline 6, air quantity is introduced from an adjacent room of the evaporation equipment room through the negative pressure effect of the evaporation equipment room to supplement air for the evaporation equipment room, and the air supplementing temperature is 20-32 ℃; in addition, air is drawn from the evaporation equipment chamber through a fan so as to exhaust air, and the exhaust air temperature is 80-90 ℃.
It will be understood that the above embodiments are merely exemplary embodiments taken to illustrate the principles of the present invention, which is not limited thereto. It will be apparent to those skilled in the art that various modifications and improvements can be made without departing from the spirit and substance of the invention, and these modifications and improvements are also considered to be within the scope of the invention.
Claims (9)
1. A method of reducing the ventilation of a heating appliance compartment, comprising the steps of:
the heat insulation layer (1) is laid on the inner wall of the wall body of the heating equipment chamber, so that heat radiated by a heating body in the heating equipment chamber is prevented from being absorbed by the wall body of the heating equipment chamber.
2. The method of claim 1, wherein the walls of the chamber are of concrete construction, and the insulation is such that the concrete construction is maintained at a temperature of no more than 65 ℃ at all times.
3. The method of claim 2, wherein the insulating layer is capable of being bonded to a concrete structure, has a service temperature higher than the maximum temperature of the heat generating body, and has a thermal conductivity of not more than 0.05W/m.
4. The method of claim 3, wherein the insulation layer is made of expanded perlite.
5. A method according to any of claims 1-4, characterized in that after the insulation has been applied to the inner wall of the heating installation chamber, a steel application (2) is applied to the insulation.
6. The utility model provides a heating equipment room of radioactivity factory building, includes the wall body, and the wall body includes concrete structure layer (3), its characterized in that, the wall body still includes thermal-protective layer (1) that can avoid the heat-generating body radiation heat absorbed by the wall body, and the thermal-protective layer is laid on the inner wall of concrete structure layer.
7. The heating facility chamber of claim 6 wherein the thermal insulation layer is made of a material that can be bonded to concrete, has a use temperature higher than the maximum temperature of the heating element, and has a thermal conductivity of not more than 0.05W/m.degree c.
8. The heating appliance chamber of claim 7 wherein the insulating layer is made of expanded perlite.
9. A heating installation chamber as claimed in any one of claims 6 to 8, characterized in that the wall body further comprises a steel cladding (2), the insulating layer being situated between the concrete structural layer and the steel cladding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010870387.1A CN111926945A (en) | 2020-08-26 | 2020-08-26 | Method for reducing ventilation volume of heating equipment chamber and heating equipment chamber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010870387.1A CN111926945A (en) | 2020-08-26 | 2020-08-26 | Method for reducing ventilation volume of heating equipment chamber and heating equipment chamber |
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| Publication Number | Publication Date |
|---|---|
| CN111926945A true CN111926945A (en) | 2020-11-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010870387.1A Pending CN111926945A (en) | 2020-08-26 | 2020-08-26 | Method for reducing ventilation volume of heating equipment chamber and heating equipment chamber |
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| Country | Link |
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| CN (1) | CN111926945A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104818779A (en) * | 2015-04-07 | 2015-08-05 | 上海理工大学 | Ventilation heat recovery radiation external wall system |
| CN107218678A (en) * | 2017-05-10 | 2017-09-29 | 中国核电工程有限公司 | It is a kind of to strengthen the system of the aeration-cooling effect of radioactivity heater Dry storage |
| CN207812732U (en) * | 2017-12-30 | 2018-09-04 | 深圳市智信兴业科技有限公司 | A kind of alert silver-colored pavilion insulated wall of high security high heat preservation performance |
-
2020
- 2020-08-26 CN CN202010870387.1A patent/CN111926945A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104818779A (en) * | 2015-04-07 | 2015-08-05 | 上海理工大学 | Ventilation heat recovery radiation external wall system |
| CN107218678A (en) * | 2017-05-10 | 2017-09-29 | 中国核电工程有限公司 | It is a kind of to strengthen the system of the aeration-cooling effect of radioactivity heater Dry storage |
| CN207812732U (en) * | 2017-12-30 | 2018-09-04 | 深圳市智信兴业科技有限公司 | A kind of alert silver-colored pavilion insulated wall of high security high heat preservation performance |
Non-Patent Citations (1)
| Title |
|---|
| 周培: "《都市现代农业结构与技术模式》", 30 April 2014, 上海交通大学出版社 * |
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Application publication date: 20201113 |
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