Intake system for a gas turbine, power plant with such and method for the conditioning of inlet air.

[0001] The herein disclosed article relates to a for heating inlet air bleed air system (inlet bleed air warming up -( [...] , Inlet bleed Heat)-system) and method for a compact gas turbine inlet. The herein disclosed and a method for compact inlet bleed air warming up system relates, in particular, to an article with improved bleed air warmth for the inlet air (inlet bleed air warmth) admixing of the gas turbine inlet.

[0002] US Patent Application inlet bleed air warming up system 2009/0 241 552 discloses a with the publication number with The a supply line, and a guide tube extending from the supply line from plurality of tubes delivering water to the supply line for receiving opposite ends of the supply pipes. The supply pipes each have a plurality of injection openings on, and the supply pipes are aligned in such a manner that the injection openings substantially into a stream of incoming air show.

[0003] in the US Patent Application inlet bleed air warming up system with the publication number Another 2013/0 115 061 is disclosed, which is transmitted to the General Electric Company with.

[0004] The in the US-patent application with the disclosed system has certain disadvantages 2009/0 241 552 publication number. A first disadvantage is that a greater channel length is required, to achieve adequate admixing of the to create inlet bleed air warmth. A second disadvantage is that the arrangement of the injection openings leads to excess noise. A third disadvantage is that the arrangement of the supply pipes requires a very high number of supply pipes, leading to high costs and high complexity of the system leads.

[0005] inlet bleed air warming up system represent solutions to one or more aspects of the problems or disadvantages described herein, are connected to the State of the type, ready.

[0006] In a exemplary, but not-restrictive aspect concerns the present disclosure an inlet system for a gas turbine. The system points to:a inlet air duct ; a noise-inferiorinlet air duct arranged in the, wherein the spaces between the panels has a plurality of panels with noise-inferior ; and a conduit with openings, into each of the spaces are arranged for injecting the inlet bleed air warmth.

[0007] In the aforementioned system can the openings are located between an upstream end and a downstream end of the panels.

[0008] In the system can be configured so the openings each one above-mentioned type that it with a first positive velocity component inlet bleed air warmth[...] a direction of an inlet air stream which by injecting the panels.

[0009] addition to or alternatively to the openings can be so oriented that it with a second positive velocity component at right angles to the direction of the inlet air stream inlet bleed air warmth by injecting the panels.

[0010] In the system each one along the conduit from the openings above mentioned type it is possible for each substantially at a midpoint between two adjacent panels of the plurality of panels be arranged.

[0011] In the system each one above-mentioned type can be aligned substantially parallel to each other the panels, and the conduit can be aligned substantially perpendicular to the panels.

[0012] The system each one above-mentioned type can further comprises a second conduit substantially parallel to and substantially have characteristics similar to those of the conduit.

[0013] In the system can be dimensioned so the openings each one above-mentioned type that they inject the inlet bleed air warmth at sonic velocity.

[0014] In the system each one an integral multiple of one a number of the above mentioned type can be number of spaces openings.

[0015] In the system each one above-mentioned type can be arranged to inject the air-warmsinlet-tap the openings in such a way that the direction of flow in the spaces inlet bleed air warmth due to the inlet air stream through the intermediate spaces the changed.

[0016] In another exemplary, but not-restrictive aspect concerns the present disclosure a power plant. The power plant comprising: a gas turbine, a compressor, a combustion system and contains a turbine section; a mechanical or electrical load; and an inlet system for the gas turbine. The Intake system points to:a inlet air duct ; a noise-inferiorinlet air duct arranged in the, wherein the several panels with spaces between the panels contains noise-inferior ; and a conduit with openings, in each of the spaces are arranged for injecting inlet-tapair-warms the.

[0017] In the aforementioned power plant of the present invention can have any of the above mentioned embodiments the intake system.

[0018] In another exemplary, but not-restrictive aspect concerns the present disclosure a process for the conditioning of inlet air for a gas turbine. The method has a flowing air through spaces between panels air-warmsinlet air duct of the gas turbine and injecting inlet-tap[...] in a a through openings and into each of the spaces on.

[0019] in the aforementioned method of the present invention can the inlet bleed air warmth are injected between an upstream end and a downstream end of the panels.

[0020] In proceedings each one above-mentioned type with a first positive velocity component opposite to a direction the inlet bleed air warmth can a inlet air stream by the panels are injected.

[0021] inlet-tapair-warms addition to or alternatively with a second positive velocity component perpendicular to the can the direction of the inlet air stream are injected by the panels.

[0022] In proceedings each one above-mentioned type can be injected upstream of the panels bleed air-warms the inlet.

[0023] The method can further comprise each one above-mentioned type that is caused that a direction, in which the flows inlet bleed air warmth , due to the inlet air stream through the intermediate spaces changed.

[0024] The method can further comprises a reversing the direction of flow of each one above-mentioned type in the spaces after leaving the openings have air-warmstap inlet.

[0025] any above-mentioned type may also some triggering each The method inlet-tapnoise-inferiorair-warms downstream of the admixing, with enforced noise-inferior and have openings upstream of the admixing, in the.

[0026] a sealing of the above mentioned type may also each The method any noise-inferior have downstream of the admixture.

[0027]

Fig. side diagram opinion of a known intake system for a gas turbine engine 1 is a simplified;

Fig. side diagram opinion for a gas turbine engine according to one exemplary 2 is a simplified, but not-restrictive aspect of the disclosure;

3 shows an enlarged detail taken from from Fig. Fig. 1;

Fig. 4 is a perspective view of a further known [...]inlet bleed air warming up system ;

Fig. partial cross section opinion[...]inlet bleed air system of 5 illustrates a horizontal 4 Fig. the;

Fig. inlet bleed air thermal conductionsnoise inferior panels and 6 illustrates a further known relationship between;

7 shows an enlarged detail taken from from Fig. Fig. 2;

Fig. noise-inferiorinlet bleed air thermal conduction 8 illustrates a known relationship between a and the representation in Fig. 7 according to;

Fig. 8 9 illustrates a isometric view of the components in Fig.;

Fig. 10 illustrates the system shown in a downstream direction with a view to the 8 in Fig. noise inferior panelsbleed air thermal conductions towards and openings of the;

11 illustrates an alternative embodiment of the components represented in Fig. Fig. 8;

Fig. 12 illustrates the components of 11 Fig., bleed air thermal conductions viewed from a direction parallel to the;

13 illustrates an alternative embodiment of the components represented in Fig. Fig. 8;

Fig. 13 14 illustrates the components of Fig., from a direction parallel to the bleed air thermal conductions

viewed;

Fig. [...]inlet bleed air warming up system 15 illustrates a portion of a is used for a fluid dynamics -calculation model;

Fig. [...]inlet bleed air warming up system 16 illustrates a known embodiment of a is used for a fluid dynamics -calculation model;

Fig. 17 illustrates a configuration of a [...]inlet bleed air warming up system , coding for a fluid dynamics -calculation model of components, similar to the 8 in Fig. is used; and

Fig. 18 illustrates results of a fluid dynamics -calculation model.

[0028] One or more specific embodiments of the present invention are given below. In the interests, a description of these embodiments to give concise , not all features of an actual implementation may be described in the specification. It should be visible that in the development of any such actual implementation, as with any technical or constructive project, numerous implementation-specific decisions need to be made, the specific objectives, such as compliance with system-related and business-referred restrictions, to achieve, which may vary from one implementation to another. Also should be visible, may be that such a complex and time consuming effort of development , but nevertheless with regard to interpretation, preparation and manufacture for the normal person skilled in the art with the benefit of this disclosure would be a task of routine.

[0029] Detailed example execution forms are disclosed herein. Structural and functional details disclosed herein are, however, for the purposes of the description of exemplary embodiments only representative. Embodiments of the present disclosure may, however, be embodied in many alternative forms and should not be considered as limited only to the embodiments shown herein.

[0030] Therefore, are, although various modifications and alternative forms can adopt exemplary embodiments, the embodiments illustrated in the context of examples in Figures and described in detail herein. It would understand, however that no intention is present on the specific forms disclosed herein a restriction of example execution forms , but, on the contrary all modifications falling within the scope of the present disclosure example execution forms , equivalents and alternatives are to comprise.

[0031] the purpose of the description of specific embodiments serves terminology used herein only The and is not intended to limit the invention. Just as used herein, "a, a, a" and should the [...] "of, the, the" also enclose the [...] with, unless the context clearly indicates otherwise not. The terms "points to", "comprising", "includes" and/or "comprising", if they are used herein, specify the presence of detected features, integers, steps, operations, elements and/or components, but the presence or addition of a/Close one or more other features, integers, steps, operations, elements, components and/or groups thereof not from.

[0032] Although the terms first, second, primary, secondary herein can be used to describe various elements, these elements should not be limited by these terms. This terms are only used to distinguish one element from another. For example, , but not limited to, a first element could be described as a second element, and also could be described as a first element a second element, without depart example execution forms from the circumference of the. Just as used herein the term "and/or" includes any and all combinations of one or more of the associated recited elements.

[0033] A certain terminology is used herein only to simplify for the reader is to be considered with respect to the periphery of the invention and not as a restriction on. For example, describe words, such as "upper", "lower", "left", "right", "front", "rear", "above", "below", "horizontally", "vertically", "upstream", "downstream", "front", "rear" and the like only the configuration in Figures represented. Indeed, can the element or elements of an embodiment of the present invention be oriented in any direction, and the terminology should therefore be understood as such variants with comprising, if not otherwise is specified.

[0034] Just as used through the entire description and the claims therethrough, "substantially" includes [...]nominal values least deviations from, the lie within test tolerances[...] /or.

[0035] The present disclosure can be applied to a diversity of burn turbine machines , the compact air drawn, such as, but not limited to, a heavy-duty gas turbine, a gas turbine and the like derived of aircraft turbine engines. A embodiment of the present disclosure can be applied to a single further burn turbine machinesburn turbine machine or more. A embodiment of the present disclosure can be applied to a burn turbine machine , operates in a simple cycle or a combination cycle.

[0036] Fig. 1 illustrates a conventional system with a 10 burn turbine machine , an intake system to heat the inlet air and a 55 bleed air system 95 (inlet bleed air warming up system ; [...] -system).

[0037] 10 has generally a compressor and turbine section on incineration gas turbine machine The. The compressor inlet contains a compressor. The compressor inletguide vanes ([...]) can contain a plurality of inlet, the 35 are arranged downstream of a inlet collecting area. The burn turbine machine 10 also includes generally a turbine section, (not shown) is connected with a flowmoderately outlet diffuser.

[0038] The Intake system 55 contains 65 arranged at an upstream end of a generally a 60 60 inlet filter housingweather hoodweather hoodinlet collecting areainlet air duct. 35 with the 70 is via a The flowmoderately connected. The inlet air duct 70 includes a first end portion 75, extending to a second end portion 85 extends 80 by an intermediate portion. The first end portion 75 in a direction substantially parallel to a center line of the compressor can be directed and defined an inlet for receiving ambient air. The second end portion 80 in a direction substantially perpendicular to a center line of the compressor can be directed and defined an outlet of the channel 70, the conducts compressor inlet towards the ambient air to the.

[0039] The Intake system 55 also contains a downstream of the 90 90 65 inlet filter housinginlet-noise-inferior arranged downstream from the 95 disposed inlet-noise-inferior[...] -system and a second end portion 80 of the channel 70 is flowmoderately. The with the diffuser and the connected compressor inlet , both of which are adjacent to the 70 inlet air duct.

[0040] 100 includes a first and second conduit 95 [...] -System The, 105, the vertical veil of heated air in the 70 generate inlet air duct. The first and second conduit 105 flowmoderatelyburn turbine machinedrawing off distributor in the can 100 and 10 with a (not shown) be connected by means of a [...] -delivery line. The line contains an associated line routing, the 100 with the first and second pipes drawing off distributor , connects flowmoderately 105.

[0041] Fig. 2 illustrates a system according to this disclosure and includes all the components of Fig. 1, so that a further description of these components is omitted. A substantially differs from the system of the disclosed system in 2 1 in the Fig. alignment and in specific details of components Fig., which are described in more detail below. The result of the differences is that the distance 1 from an inlet 90 500 in Fig. [...] up to a central point of the inlet of the combustion turbine of the significantly longer than the distance is 2 505 in Fig.. Shortening the route may be achieved at least partially due to the differences of the 95 [...] -system. In a non-limiting example is the distance 50024 foot, while the distance is 50515 Foot. Therefore, from below in detail in an exemplary reasons set out above, the overall size of an intake system by approximately 37.5% be reduced advantageously Implementation.

[0042] The system according to this disclosure, for example the system of 2 Fig., can be contained in a power plant. The nuclear plant can contain a gas turbine 10, wherein the gas turbine has a compressor, a combustion system and a turbine section has. Typically, a mechanical or electrical load with includes are.

[0043] 3 illustrates the 90 and 95 of the inlet bleed air warming up system Fig. Fig. noise-inferior 1 in greater detail, wherein a vertically oriented noise inferior panel[...] -Radiation 110 125 enter from a side view is represented from the first conduit. 100 and the second conduit 105 in a direction substantially perpendicular to a direction of the inlet air stream from. The (not visible) through openings 125 [...] -Radiation be in the first and second conduits by 100, 105 generated.

[0044] 4 illustrates a configuration according to the US Patent Application Fig. 2009/0241552. In this embodiment are a plurality of with the publication number 115 respectively, with a number of vertically aligned and laterally spaced [...] lines noise inferior panels upstream of these arranged aligned and 110. Any [...] lines 105 has a plurality of openings by the 120, which are aligned, around or upstream with respect to the direction of flow of the inlet air against the inlet bleed air warmth to inject.

[0045] 4.5 illustrates a cross-sectional view of 5 illustrates Fig. Fig. Fig. [...] lines 115 and simply the alignment between the 110 noise inferior panels. Given this relative orientation are the [...] lines 115 in a zone a relatively low inlet air flow speed. The inlet air stream has a flow rate at or almost zero at the leading edges of the 115 noise inferior panels[...] lines 110 and the turbulence and/or maximal inlet air flow speed. A maximum somewhere between the 110 reaches noise inferior panels is, since the flow surface is limited. Consequently, the minimum upstream of (in the left of 5 Fig.) the inlet flow rate[...] lines reaches 115.

[0046] The embodiment 5 has various drawbacks from Fig.. Firstly, because the the openings 120 125 within a range of injected [...] -Radiation leaving, of this section of the system has the least relative inlet air speed. Therefore, to this embodiment that the flow across the maximum possible distance [...] -Radiation 125 upstream, before the inlet air stream 125 causes [...] -Radiation the, reverse their direction of flow, to mix with the inlet air stream flow therethrough and between the noise inferior panels 110. Secondly, , [...] -Radiation 120 125 the openings when the leave at sonic velocity, nothing exists, to dampen sound. This [...] -Radiation 125 caused by the leads to an undesirable noise. Thirdly, there is a one-to-one-assignment between the 115 110 noise inferior panels[...] lines and the, leading to high costs and high complexity of the system leads.

[0047] 6 illustrates a further embodiment of the US-patent application with the Fig. 2009/0241 552 publication number. This configuration is similar to the 5 illustrated except in Fig., 115 noise inferior panels[...] lines that the downstream with respect to the 120 110 are arranged and the openings are so oriented that the 125 inlet air flow direction[...] -Radiation at the beginning are aligned at right angles to the.

[0048] 7 illustrates the 90 and 95 of the inlet bleed air warming up system Fig. Fig. noise-inferior 2 with more details. The (not visible) through-openings 120 125 [...] -Radiation be provided by in the first and second conduit 100.105 generated. The [...] -Radiation 100 105 125 enter from the first conduit and said second conduit in a direction substantially against a direction of the from air intake stream. Therefore have, as shown, the at least a portion of a positive velocity component 125 [...] -Radiation, air intake streamnoise-inferior 90 therethrough is opposite to the a direction of the by the. It may also be a positive velocity component present is at right angles to the direction of the air intake stream. The resulting vector [...] -Radiation 125 may, at a certain angle of between a perfect counterflow and a perfect rectangular flow are located. Therefore, the openings 120 so designed that the exit 125 [...] -Radiation substantially at sonic velocity noise-inferior flow and substantially against the inlet air stream and in the. A direction, into which the flows inlet bleed air warmth is changing due to the inlet air stream through the intermediate spaces and can thus, while the inlet air stream and the mixing inlet bleed air warmth , completely reverse.

[0049] 7 also represents the first and second ducts Further increasing of Fig. 100.105 noise inferior panels 110 constitute substantially perpendicular to the. Although two lines are represented, could, for example, only a single line or more than two lines as a function of factors, such as the desired size of the system and the mixing of the inlet bleed air-warms , are used. As all the way through the Figures represented, substantially equal to each other are 100.105 the first and second ducts, wherein but differences could be provided on the basis of the requirements of a specific design. One advantage, in the practice of some embodiments of the described systems and techniques can be realized is that the number of lines can be minimized, in order to reduce costs and complexity of the system, while an adequate inlet bleed air warmth admixing of the is achieved. Unlike some conventional systems It is available, the one line for each 120 require noise inferior panel.

[0050] 8 is a simplified view Fig., received from a direction perpendicular to the one edge of and perpendicular to the first conduit 110 noise inferior panelsinlet air flow direction 100 (only the first line 100 is represented, but the second conduit 105 and other lines could be provided). In this view are just a 125 and a single opening 120 to simplify represented [...] -beam. Fig. 8 illustrates, as the opening 120 to substantially a center of the space between two adjacent noise inferior panels 110 is aligned. This configuration a result, an air gap between the panels that the 110 125 [...] -beam is injected in, the (at least locally) has a region of maximum velocity of the inlet air. Even if the opening is disposed downstream of the 120 110 noise inferior panels , 125 at or almost at sonic velocity [...] -beam enters the upstream from and migrates, noise inferior panels to be injected into the region between the, start where the two streams is to mix, and reverses its flow direction from the inlet air stream and the no longer distinguishable inlet bleed air warmth finally is. One advantage, in the practice of some embodiments of the described systems and techniques can be realized is, in a region of maximum speed and/or that the turbulence is injected inlet bleed air cooling warmth , resulting in improved mixing with respect to a portion of the leads of the prior art.

[0051] 8 9 shows an isometric view of the system set in Fig. Fig..

[0052] Fig. 10 illustrates the in the direction of the system shown in Fig. noise inferior panels 8 110 and the openings 120 looking downstream. As Fig. 10 can be seen in, are all of the openings 110 aligned substantially between two noise inferior panels 120 that the inlet 110 can be injected between the noise inferior panelsbleed air-warms , wherein all noise inferior panels 110 are substantially parallel to each other. Fig. 10 illustrates two openings on each of said first and second conduits 120 100, 105 in each gap between the each of the first and second conduit 110. noise inferior panels Therefore, 120 have a number of openings, which is an integral multiple of a number of spaces between the 110 is noise inferior panels. Although with pairs of openings 120 represented, only a single aperture 120 120 or more than two openings could be provided there, where each pair is represented. If two or more openings 120 are provided at each location shown, the controller may more quickly and/or mix Distribute inlet bleed air warmth relatively, than if a single opening is provided, resulting in a relatively shorter distance can lead, and the inlet air to achieve about a complete mixing between the inlet bleed air warmth.

[0053] 11 is similar to except 8 Fig. Fig. that the first conduit (and/or the non-visible second conduit 105) 100 between the upstream and downstream ends of the 110 are arranged noise inferior panels. Alternatively, only the openings 120 110 be arranged between an upstream end and a downstream end of the noise inferior panels , wherein a part of or the entire first conduit 110 may be arranged outside of the extent of the 100 noise inferior panels. Therefore illustrates Fig. 11, could be shifted such that the first conduit 100 everywhere that the openings are located between the upstream and downstream end of the 120 110 noise inferior panels. One advantage, in the practice of some embodiments of the described systems and techniques can be realized is that, when the first conduit 105 100 and/or the second conduit are arranged that the openings are located between the 120 110 noise inferior panels , sound radiation squelches can be realized. One advantage, in the practice of some embodiments of the described systems and techniques can be realized is that an additional noise inferior panelsmixture length between the 110 can be achieved.

[0054] 12 11 with the exception is similar to the Fig. Fig. that the view is oriented perpendicular to a side of the 110 noise inferior panels.

[0055] Fig. 13 shows another implementation. Located here the first conduit 110 100 upstream of a leading edge of the represented embodiments are the openings noise inferior panels. Similar to above 120 (only one is shown for simplification) substantially centrally between two noise inferior panels 110, the advantages of the between the 110 generated noise inferior panels , to use relatively high speed.

[0056] 13 14 illustrates the embodiment of with a view similar Fig. Fig.. In this embodiment are the openings 12 by Fig. represented in pairs such 120, 125 that each individual inlet air flow direction[...] -beam is located at an angle with respect to the. As explained above, one or more than two openings 120 could be provided at each location. The openings 120 can be oriented under any angle, so as to exploit the advantage of higher speed generated between the 110 noise inferior panels.

[0057] Fig. 8-14 illustrate exemplary locations of the first and second conduit 100, 105, 110 which in the broader sense than upstream (Figures 13 and 14) or noise inferior panels a front edge of the downstream from a front edge of said 110 noise inferior panels (Fig. 8-12) can be categorized located. Whether the first and second ducts 100, 105 is located upstream or downstream from the leading edge, a relative angle of the openings can affect 120. If 100.105 said first and second leads are located upstream of the leading edge of the noise inferior panels 110, 120 can air intake direction of flow an angle with respect to the one or more openings, e.g. 90° 45 ° to an angle of, form. If said first and second leads 100, 110 are located downstream of the leading edge of the 105 noise inferior panels , can the one or more openings 120 inlet direction of flow an angle with respect to the, 60° for example, an angle of 15° to, form. In each configuration can be oriented so the openings 120, 125 [...] -Radiation in a plane parallel to the plane that the 110 are aligned the noise inferior panels. One advantage, in the practice of some embodiments of the described systems and techniques can be realized is the, [...] -Radiation 125 with respect to the that an angle of the on the basis of a position of the first and second conduit inlet air flow direction 100.105 can be optimized.

[0058] Fig. 15-18 illustrate a modeling, by the present system (see Fig. 16) and from the State of the kind has been carried out.

[0059] 15 illustrates a single flow channel 130 between two noise inferior panels. 110 Fig. noise inferior panelsfluid model cut in half for the 110 are The, so that a single channel could be modeled. A corresponding portion of the first duct 100 is also represented.

[0060] Two configurations have been modeled. The first configuration, represented in 16 Fig., illustrates [...] -Radiation 125, are aligned perpendicular to a direction of an inlet air stream, according to the state of the type. The second configuration, represented in Fig. 17, illustrates two [...] -Radiation 125, are directed in the direction of the air flow. Each [...] -Radiation is at an angle of approximately from the 15° inlet air flow direction aligned with respect to the (opposite to each other).

[0061] 18 represents the results of the numerical (CFD) Fig. model fluid dynamics --. The temperature of the 45 °F was set on- inlet stream. 632.5 °F was 6% of the total flow and. fixed on inlet bleed air stream on The AL shows the difference between the two in the 16 and 17 the configurations represented mixture length Fig., wherein the upper and the lower recording the Fig. 17 corresponds to the recording corresponds to 16 Fig.. One advantage, in the practice of some embodiments of the described systems and techniques can be realized is a much shorter mixture distance. The [...] -Radiation by optimizing the alignment of the 125 mixture distance shorter can be achieved. For example, the distance 24 500 in Fig. foot, while the distance 215 Foot is 505 in Fig., what constitutes in an exemplary implementation a distance reduction of about 37.5%.

[0062] As from Fig. can be seen 18, at a configuration according to the present disclosure is a noise-inferiorinlet bleed air warmth downstream of the admixing of the (to the or in the vicinity of the orifices 120) initiated is working away from the openings in the upstream and downstream of and somewhat noise-inferiornoise-inferior the can, substantially at the designated line in the lower picture by AL, be regarded as closed.

[0063] although the invention has been described in connection with the, what is viewed currently as the most viable and most preferential embodiment, it may be meant that the invention is not limited to the disclosed embodiments, but on the contrary, various modifications and equivalent arrangements, in the frame and scope of the accompanying claims are contained is supposed to cover.

[0064] A Intake system for a gas turbine includes: a inlet air duct ; a noise-inferiorinlet air duct arranged in the, wherein the several panels with spaces between the panels contains noise-inferior ; and a conduit with openings, into each of the spaces are arranged for injecting the inlet bleed air warmth. A method for the conditioning of inlet air for a gas turbine engine contains a flowing air through spaces between panels bleed air-warmsinlet air duct of the gas turbine and injecting inlet [...] in a a through openings and into each of the spaces into.

[0065]

10 burn turbine machine

35 inlet collecting area

55 Intake system

60 weather hood

65 inlet filter house

70 inlet air duct

75 first end portion

80 second end portion

85 intermediate portion

90 noise-inferior

95 inlet bleed air warming up system

100 first conduit

105 second conduit

110 noise inferior panel

115 [...] lines

120 opening

125 [...] -Radiation

130 individual flow channel

500 distance

505 distance