CN113027710A - Double-row arrangement structure of external heat exchanger of wind driven generator - Google Patents

Double-row arrangement structure of external heat exchanger of wind driven generator Download PDF

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Publication number
CN113027710A
CN113027710A CN202110479187.8A CN202110479187A CN113027710A CN 113027710 A CN113027710 A CN 113027710A CN 202110479187 A CN202110479187 A CN 202110479187A CN 113027710 A CN113027710 A CN 113027710A
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China
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heat exchanger
wind
heat exchangers
row
catching
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CN202110479187.8A
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CN113027710B (en
Inventor
周年勇
冯浩
刘文博
郭艺星
范婕
许泓烨
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Changzhou University
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Changzhou University
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03DWIND MOTORS
    • F03D80/00Details, components or accessories not provided for in groups F03D1/00 - F03D17/00
    • F03D80/60Cooling or heating of wind motors
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03DWIND MOTORS
    • F03D80/00Details, components or accessories not provided for in groups F03D1/00 - F03D17/00
    • F03D80/80Arrangement of components within nacelles or towers
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03DWIND MOTORS
    • F03D80/00Details, components or accessories not provided for in groups F03D1/00 - F03D17/00
    • F03D80/80Arrangement of components within nacelles or towers
    • F03D80/88Arrangement of components within nacelles or towers of mechanical components
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00Energy generation through renewable energy sources
    • Y02E10/70Wind energy
    • Y02E10/72Wind turbines with rotation axis in wind direction

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  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)

Abstract

The invention relates to the technical field of wind driven generators, in particular to a double-row arrangement structure of external heat exchangers of a wind driven generator, which comprises a front row of heat exchanger groups and a rear row of heat exchanger groups, wherein the front row of heat exchanger groups and the rear row of heat exchanger groups are both fixed at the top of the outer side of a cabin; the front row of heat exchanger groups comprise a plurality of front heat exchangers which are distributed at intervals along a first straight line direction; the rear heat exchanger group comprises a plurality of rear heat exchangers distributed at intervals along a second straight line direction, an air narrow passage is formed between every two adjacent rear heat exchangers, the air narrow passages correspond to the rear heat exchangers one by one, and the air narrow passages are opposite to the rear heat exchangers corresponding to the air narrow passages.

Description

Double-row arrangement structure of external heat exchanger of wind driven generator
Technical Field
The invention relates to the technical field of wind driven generators, in particular to a double-row arrangement structure of external heat exchangers of a wind driven generator.
Background
In recent years, the domestic wind power generation industry is rapidly developed, and the technical research and development in the field of wind power continuously make a breakthrough. In order to pursue higher energy conversion efficiency, equipment manufacturers promote the increase of the installed capacity of a single machine of the wind power equipment, even reaching 6-8 megawatts. The heat dissipation problem of main equipment such as a gear box, a generator and the like in a cabin of the wind driven generator becomes a key technical problem in the aspect of environmental control in the cabin.
In the environmental control system and the control method of the wind turbine generator disclosed in chinese patent with application No. CN201611197848.3 and the cooling system of the wind turbine generator disclosed in chinese patent with application No. CN201811210361.3 in the prior art, the heat dissipation principles are as follows: the heat productivity in the engine room is transferred to an air-cooled heat exchanger outside the engine room through a liquid-cooled heat exchange system, and is transferred to the external atmospheric environment through the convection heat exchange of natural wind;
at present, the number of external heat exchangers of some manufacturers reaches several, however, how to arrange a plurality of external heat exchangers is not considered in the prior art, and actually, the arrangement mode of the external heat exchangers not only significantly affects the actual operation heat dissipation efficiency of the heat exchangers, but also finally affects the long-term safe and stable operation of the generator.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: in order to solve the problem that how to arrange a plurality of external heat exchangers of a wind driven generator in the prior art is not considered, a double-row arrangement structure of the external heat exchangers of the wind driven generator is provided.
The technical scheme adopted by the invention for solving the technical problems is as follows: a wind driven generator external heat exchanger double-row arrangement structure comprises a cabin and an internal heat exchanger positioned in the cabin, the external heat exchanger double-row arrangement structure comprises a front row heat exchanger group and a rear row heat exchanger group, the front row heat exchanger group and the rear row heat exchanger group are both fixed at the top of the outer side of the cabin, and the front row heat exchanger group is positioned at the rear side of the rear row heat exchanger group;
the front row of heat exchanger groups comprise a plurality of front heat exchangers which are distributed at intervals along a first straight line direction;
the rear row of heat exchanger groups comprise a plurality of rear heat exchangers distributed at intervals along a second linear direction, an air narrow channel is formed between every two adjacent rear heat exchangers, the air narrow channels correspond to the rear heat exchangers one by one, and the air narrow channels are opposite to the rear heat exchangers corresponding to the air narrow channels;
the inlets of all the front heat exchangers and the inlets of all the rear heat exchangers are communicated with the outlets of the inner heat exchangers through liquid inlet pipelines, the outlets of all the front heat exchangers and the outlets of all the rear heat exchangers are communicated with the inlets of the inner heat exchangers through liquid return pipelines, and circulating pumps are arranged on the liquid inlet pipelines or the liquid return pipelines.
The rear heat exchanger in the rear row of heat exchanger group is adopted to be opposite to the air narrow channel in the front row of heat exchanger group in the scheme, the air speed passing through the air narrow channel is obviously increased through the throttling effect, the head-on air speed of the rear heat exchanger is increased, and then the heat exchange capacity of the rear row of heat exchanger group is greatly improved, so that the heat exchange efficiency is improved.
Further, the width L1 of the air narrow channel is less than the length L2 of the rear heat exchanger, so that all air flow flowing out of the air narrow channel can be blown to the rear heat exchanger, and the heat exchange effect is improved.
Furthermore, the rear end of the front heat exchanger is fixed with a variable diameter pipeline, the variable diameter pipeline is internally provided with a coarse hole section and a fine hole section, the area of the cross section of the coarse hole section gradually decreases from front to back, the large end of the coarse hole section is fixedly connected with the rear end of the front heat exchanger and communicated with each other, the small end of the coarse hole section is fixedly connected with the fine hole section and communicated with each other, and the rear end of the fine hole section is positioned at the rear side of the rear heat exchanger;
the inside totally closed air runner that forms of reducing pipeline, its effect does: firstly, separating the air flow after heat exchange of the front heat exchanger from the air flow blown backwards to the rear heat exchanger by the air narrow channel, so that the temperature rise of the air facing the rear heat exchanger caused by air flow mixing is avoided, and the heat exchange temperature difference is reduced; secondly, a suction force can be formed through the reducing pipeline, the wind speed of the front heat exchanger is improved, and the convection heat transfer coefficient is increased.
Further, the coarse hole section is pyramid-shaped, and the fine hole section is square.
Furthermore, a front wind-catching cover is fixed at the front end of the front row of heat exchanger groups, a front wind-catching channel is arranged in the front wind-catching cover, the cross section area of the front wind-catching channel is gradually reduced from front to back, and all air narrow channels and all back heat exchangers are communicated with the front wind-catching channel; the front end of the front row of heat exchanger group is provided with a front wind catching cover used for collecting and guiding air in an external wind field, and the head-on wind speed of the front heat exchanger and the rear heat exchanger can be increased.
Further, the front wind catching channel is pyramid-shaped.
Furthermore, a rear wind catching cover is fixed at the front end of each rear heat exchanger, a rear wind catching channel is arranged in each rear wind catching cover, the cross section area of each rear wind catching channel gradually decreases from front to back, and the rear end of each rear wind catching channel is communicated with the rear heat exchanger where the rear wind catching channel is located; the rear air-catching cover is used for collecting airflow flowing from the air narrow passage, and the head-on air speed of the rear heat exchanger is improved, so that the heat exchange efficiency is improved.
Further, the rear wind-catching channel is pyramid-shaped.
Further, the first linear direction and the second linear direction are parallel.
Further, the front heat exchanger and the rear heat exchanger both adopt plate-fin heat exchangers.
The invention has the beneficial effects that: the double-row arrangement structure of the external heat exchangers of the wind driven generator adopts the structure that the rear heat exchangers in the rear heat exchanger group are opposite to the air narrow channels in the front heat exchanger group, the wind speed passing through the air narrow channels is obviously increased through the throttling effect, the head-on wind speed of the rear heat exchangers is increased, and the heat exchange capability of the rear heat exchanger group is greatly improved, so that the heat exchange efficiency is improved.
Drawings
The invention is further illustrated with reference to the following figures and examples.
FIG. 1 is a schematic diagram of a double-row arrangement structure of an external heat exchanger of a wind turbine in embodiment 1 of the present invention;
FIG. 2 is a schematic diagram of a double-row arrangement structure of an external heat exchanger of a wind driven generator in embodiment 2 of the present invention;
in the figure: 1. a front row of heat exchanger groups 101, a front heat exchanger 102 and an air narrow channel;
2. a rear row heat exchanger group 201 and a rear heat exchanger;
3. a variable diameter pipeline 301, a coarse hole section 302 and a fine hole section;
4. a front wind catching cover;
5. a rear wind catching cover;
6. a nacelle;
l1: the width of the air throat;
l2: length of the rear heat exchanger.
Detailed Description
The present invention will now be described in further detail with reference to the accompanying drawings. The drawings are simplified schematic diagrams illustrating the basic structure of the present invention only in a schematic manner, and thus show only the constitution related to the present invention, and directions and references (e.g., upper, lower, left, right, etc.) may be used only to help the description of the features in the drawings. The following detailed description is, therefore, not to be taken in a limiting sense, and the scope of the claimed subject matter is defined only by the appended claims and equivalents thereof.
Example 1
As shown in fig. 1, the double-row arrangement structure of the external heat exchanger of the wind driven generator comprises a cabin 6 and an internal heat exchanger located in the cabin 6, the double-row arrangement structure of the external heat exchanger comprises a front row heat exchanger group 1 and a rear row heat exchanger group 2, the front row heat exchanger group 1 and the rear row heat exchanger group 2 are both fixed at the top of the outer side of the cabin 6, and the front row heat exchanger group 1 is located at the rear side of the rear row heat exchanger group 2;
the front row of heat exchanger group 1 comprises a plurality of front heat exchangers 101 which are distributed at intervals along a first straight line direction;
the rear row heat exchanger group 2 comprises a plurality of rear heat exchangers 201 which are distributed at intervals along a second straight line direction, an air narrow channel 102 is formed between every two adjacent rear heat exchangers 201, the air narrow channels 102 correspond to the rear heat exchangers 201 one by one, and the air narrow channels 102 are opposite to the rear heat exchangers 201 corresponding to the air narrow channels 102;
the inlets of all the front heat exchangers 101 and the inlets of all the rear heat exchangers 201 are communicated with the outlets of the inner heat exchangers through liquid inlet pipelines, the outlets of all the front heat exchangers 101 and the outlets of all the rear heat exchangers 201 are communicated with the inlets of the inner heat exchangers through liquid return pipelines, and circulating pumps are arranged on the liquid inlet pipelines or the liquid return pipelines.
The width L1 of the air throat 102 is less than the length L2 of the rear heat exchanger 201, so that the air flow flowing out of the air throat 102 can be totally blown to the rear heat exchanger 201 to improve the heat exchange effect.
The rear end of the front heat exchanger 101 is fixedly provided with a variable diameter pipeline 3, a coarse pore section 301 and a fine pore section 302 are arranged in the variable diameter pipeline 3, the area of the cross section of the coarse pore section 301 gradually decreases from front to back, the large end of the coarse pore section 301 is fixedly connected with the rear end of the front heat exchanger 101 and communicated with each other, the small end of the coarse pore section 301 is fixedly connected with the fine pore section 302 and communicated with each other, and the rear end part of the fine pore section 302 is positioned at the rear side of the rear heat exchanger 201;
the inside totally closed air runner that forms of reducing pipeline 3, its effect does: firstly, the air flow after heat exchange of the front heat exchanger 101 and the air flow blown backwards to the rear heat exchanger 201 by the air narrow channel 102 are separated, so that the temperature rise of the air on the front side of the rear heat exchanger 201 caused by air flow mixing is avoided, and the heat exchange temperature difference is reduced; secondly, a suction force can be formed through the reducing pipeline 3, the wind speed of the front heat exchanger 101 is improved, and the convection heat transfer coefficient is increased.
The coarse hole section 301 is pyramid-shaped, and the fine hole section 302 is square.
The first linear direction and the second linear direction are parallel.
The front heat exchanger 101 and the rear heat exchanger 201 both adopt plate-fin heat exchangers.
The working principle of the double-row arrangement structure of the external heat exchanger of the wind driven generator in the embodiment is as follows:
the internal heat exchanger inside the engine room 6 can specifically comprise a gear box heat exchanger, a generator heat exchanger, a transformer heat exchanger and a converter heat exchanger, the working medium of the glycol solution exchanges heat with the gear box heat exchanger, the generator heat exchanger, the transformer heat exchanger and the converter heat exchanger inside the engine room 6, after the temperature is increased, the working medium of the glycol solution is conveyed to the external front heat exchanger 101 and the external rear heat exchanger 201 by the circulating pump and exchanges heat with air, and after the temperature is reduced, the working medium of the glycol solution enters the internal heat exchanger inside the engine room 6 to perform the next circulation.
When air is blown to the front row of heat exchanger groups 1, one part of air flow flows to each front heat exchanger 101, passes through the front heat exchangers 101, reaches the reducing pipeline 3, flows out from the rear end of the reducing pipeline 3, and the other part of air flow is accelerated by the air narrow channel 102, reaches the rear heat exchanger 201, and finally passes through the rear heat exchanger 201.
In the double-row arrangement structure of the external heat exchangers of the wind driven generator in the embodiment, the rear heat exchangers 201 in the rear heat exchanger group 2 are opposite to the air narrow channels 102 in the front heat exchanger group 1, the wind speed passing through the air narrow channels 102 is obviously increased through the throttling effect, the head-on wind speed of the rear heat exchangers 201 is increased, and the heat exchange capability of the rear heat exchanger group 2 is greatly improved, so that the heat exchange efficiency is improved; therefore, the heat exchange area can be reduced by improving the convection heat exchange coefficient, namely the volume and the weight of the heat exchanger are reduced, so that the construction cost is reduced.
Example 2
As shown in fig. 2, embodiment 2 differs from embodiment 1 in that: a front wind catching cover 4 is fixed at the front end of the front row of heat exchanger group 1, a front wind catching channel is arranged in the front wind catching cover 4, the cross section area of the front wind catching channel is gradually reduced from front to back, and all the air narrow channels 102 and all the rear heat exchangers 201 are communicated with the front wind catching channel; the front wind-catching cover 4 is arranged at the front end of the front row heat exchanger group 1 and used for collecting and guiding air in an external wind field, and the head-on wind speed of the front heat exchanger 101 and the rear heat exchanger 201 can be increased.
The front wind-catching channel is pyramid-shaped.
A rear wind catching cover 5 is fixed at the front end of each rear heat exchanger 201, a rear wind catching channel is arranged in each rear wind catching cover 5, the cross section area of each rear wind catching channel gradually decreases from front to back, and the rear end of each rear wind catching channel is communicated with the rear heat exchanger 201 where the rear wind catching channel is located; the rear wind-catching hood 5 is used for collecting the airflow flowing from the air narrow passage 102, and increasing the head-on wind speed of the rear heat exchanger 201, thereby improving the heat exchange efficiency.
The rear wind-catching channel is pyramid-shaped.
In light of the foregoing description of the preferred embodiment of the present invention, it is to be understood that numerous changes and modifications may be made without departing from the spirit and scope of the invention as defined by the appended claims. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.

Claims (10)

1. A double-row arrangement structure of external heat exchangers of a wind driven generator, wherein the wind driven generator comprises a cabin (6) and an internal heat exchanger positioned in the cabin (6), and is characterized in that: the double-row arrangement structure of the external heat exchanger comprises a front row heat exchanger group (1) and a rear row heat exchanger group (2), wherein the front row heat exchanger group (1) and the rear row heat exchanger group (2) are fixed at the top of the outer side of a cabin (6), and the front row heat exchanger group (1) is positioned at the rear side of the rear row heat exchanger group (2);
the front row of heat exchanger groups (1) comprise a plurality of front heat exchangers (101) which are distributed at intervals along a first straight line direction;
the rear row of heat exchanger groups (2) comprise a plurality of rear heat exchangers (201) which are distributed at intervals along a second straight line direction, an air narrow channel (102) is formed between every two adjacent rear heat exchangers (201), the air narrow channels (102) are in one-to-one correspondence with the rear heat exchangers (201), and the air narrow channels (102) are opposite to the rear heat exchangers (201) corresponding to the air narrow channels;
the inlets of all the front heat exchangers (101) and the inlets of all the rear heat exchangers (201) are communicated with the outlets of the inner heat exchangers through liquid inlet pipelines, the outlets of all the front heat exchangers (101) and the outlets of all the rear heat exchangers (201) are communicated with the inlets of the inner heat exchangers through liquid return pipelines, and circulating pumps are arranged on the liquid inlet pipelines or the liquid return pipelines.
2. The wind turbine external heat exchanger double row arrangement of claim 1, wherein: the width L1 of the air throat (102) is less than the length L2 of the rear heat exchanger (201).
3. The wind turbine external heat exchanger double row arrangement of claim 1, wherein: the rear end of preceding heat exchanger (101) all is fixed with reducing pipe (3), thick hole section (301) and pore section (302) have in reducing pipe (3), thick hole section (301) is by preceding to back cross sectional area diminishing gradually, the main aspects of thick hole section (301) and the rear end fixed connection of preceding heat exchanger (101), and communicate each other, the tip and pore section (302) fixed connection of thick hole section (301), and communicate each other, the rear end tip of pore section (302) is located the rear side of back heat exchanger (201).
4. The wind turbine external heat exchanger double row arrangement of claim 1, wherein: the coarse hole section (301) is pyramid-shaped, and the fine hole section (302) is square.
5. The wind turbine external heat exchanger double row arrangement of claim 1, wherein: the front-row heat exchanger group is characterized in that a front wind-catching cover (4) is fixed at the front end of the front-row heat exchanger group (1), a front wind-catching channel is arranged in the front wind-catching cover (4), the cross section area of the front wind-catching channel is gradually reduced from front to back, and all the air narrow channels (102) and all the rear heat exchangers (201) are communicated with the front wind-catching channel.
6. The wind generator external heat exchanger double row arrangement as claimed in claim 5, wherein: the front wind-catching channel is pyramid-shaped.
7. The wind turbine external heat exchanger double row arrangement of claim 1, wherein: the front end of each rear heat exchanger (201) is fixed with a rear wind-catching cover (5), a rear wind-catching channel is arranged in the rear wind-catching cover (5), the cross section area of the rear wind-catching channel is gradually reduced from front to rear, and the rear end of the rear wind-catching channel is communicated with the rear heat exchanger (201) where the rear wind-catching channel is located.
8. The wind generator external heat exchanger double row arrangement as claimed in claim 7, wherein: the rear wind-catching channel is pyramid-shaped.
9. The wind turbine external heat exchanger double row arrangement of claim 1, wherein: the first linear direction and the second linear direction are parallel.
10. The wind turbine external heat exchanger double row arrangement of claim 1, wherein: the front heat exchanger (101) and the rear heat exchanger (201) both adopt plate-fin heat exchangers.
CN202110479187.8A 2021-04-30 2021-04-30 Double-row arrangement structure of external heat exchanger of wind driven generator Active CN113027710B (en)

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Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2213877A2 (en) * 2009-01-30 2010-08-04 Vestas Wind Systems A/S Wind turbine having a Nacelle with cooler top
CN202117859U (en) * 2011-06-03 2012-01-18 毅科热交换器(上海)有限公司 Complete cooling system for wind generator set
US20130056989A1 (en) * 2011-09-01 2013-03-07 Gamesa Innovation & Technology, S.L. Energy efficient climate control system for an offshore wind turbine
KR20150045188A (en) * 2013-10-18 2015-04-28 대우조선해양 주식회사 Apparatus for cooling nacelle of wind power generator
CN106930906A (en) * 2017-01-19 2017-07-07 浙江运达风电股份有限公司 A kind of engine rooms of wind power generators air inducing heat abstractor
CN209743100U (en) * 2018-12-10 2019-12-06 蒋欣慰 Wind turbine generator system with protection mechanism
CN111237140A (en) * 2020-01-16 2020-06-05 浙江大学 Wind generating set
WO2020115276A1 (en) * 2018-12-07 2020-06-11 Nissens Cooling Solutions A/S A wind turbine nacelle mounted cooling system

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2213877A2 (en) * 2009-01-30 2010-08-04 Vestas Wind Systems A/S Wind turbine having a Nacelle with cooler top
CN202117859U (en) * 2011-06-03 2012-01-18 毅科热交换器(上海)有限公司 Complete cooling system for wind generator set
US20130056989A1 (en) * 2011-09-01 2013-03-07 Gamesa Innovation & Technology, S.L. Energy efficient climate control system for an offshore wind turbine
KR20150045188A (en) * 2013-10-18 2015-04-28 대우조선해양 주식회사 Apparatus for cooling nacelle of wind power generator
CN106930906A (en) * 2017-01-19 2017-07-07 浙江运达风电股份有限公司 A kind of engine rooms of wind power generators air inducing heat abstractor
WO2020115276A1 (en) * 2018-12-07 2020-06-11 Nissens Cooling Solutions A/S A wind turbine nacelle mounted cooling system
CN209743100U (en) * 2018-12-10 2019-12-06 蒋欣慰 Wind turbine generator system with protection mechanism
CN111237140A (en) * 2020-01-16 2020-06-05 浙江大学 Wind generating set

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