JP3541119B2 - Absorption refrigerator - Google Patents

Absorption refrigerator Download PDF

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Publication number
JP3541119B2
JP3541119B2 JP29334597A JP29334597A JP3541119B2 JP 3541119 B2 JP3541119 B2 JP 3541119B2 JP 29334597 A JP29334597 A JP 29334597A JP 29334597 A JP29334597 A JP 29334597A JP 3541119 B2 JP3541119 B2 JP 3541119B2
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Japan
Prior art keywords
absorber
evaporator
refrigerant
partition plate
heat transfer
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JP29334597A
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JPH11118277A (en
Inventor
修行 井上
利男 松原
祥治 田中
伸隆 松田
照雄 白石
純 村田
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荏原冷熱システム株式会社
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    • Y—GENERAL 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A30/00—Adapting or protecting infrastructure or their operation
    • Y02A30/27—Relating to heating, ventilation or air conditioning [HVAC] technologies
    • Y—GENERAL 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/62—Absorption based systems

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  • Sorption Type Refrigeration Machines (AREA)

Description

【０００１】
【発明の属する技術分野】
本発明は単効用又は多重効用吸収冷凍機に係り、特に吸収器の構造の改良に関するものである。
【０００２】
【従来の技術】
この種の吸収冷凍機においては、吸収器部分が最も低圧になり、吸収冷凍機内に不凝縮ガスがあれば、この不凝縮ガスは吸収器に集まってくる。この不凝縮ガスが伝熱、吸収に悪影響を与えるので、エジェクター等の抽気手段でこの不凝縮ガスを抽気タンク等に集め、不凝縮ガスが伝熱、吸収に悪影響を与えるのを防いでいる。
【０００３】
吸収器内には蒸発器から冷媒蒸気が流入するが、吸収器の側面或いは下面からこの蒸気の流入を許すと、不凝縮ガスは、吸収器伝熱管群の中心部に集まり、外部への吸引が難しくなるという問題がある。そこで、吸収器の側面及び底面を囲い、蒸発器からの蒸気の流入を上部からに規制し、不凝縮ガスの集積する部分を吸収器の下部に特定し、不凝縮ガスを吸引しやすいようにしている例がある。
【０００４】
断面が矩形状の缶胴を持つ吸収冷凍機においては、下面に受け皿を設け、該受け皿を吸収器の底面の囲いとして用い、蒸発器と吸収器を仕切る仕切り板を吸収器の側面の囲いとして用い、更に他の側面の囲いに缶胴の一側部を用いることができる。
【０００５】
【発明が解決しようとする課題】
上記のように蒸発器と吸収器を仕切る仕切り板を吸収器の側面の直接の囲いとして用いると、吸収器の熱が直接蒸発器内の冷媒に伝わり、熱損失が生じると共に、吸収器側ではこの仕切り板に接触した溶液が蒸発器の低い温度により、溶質の結晶が析出し、長時間に渡っては側面付近の流路を塞いでしまうという問題が生じる。また、結晶析出により、仕切り板等の腐食の恐れもある。
【０００６】
本発明は上述の点に鑑みてなされたもので、吸収器の熱が直接蒸発器内の冷媒に伝わり、熱損失が生じたり、吸収器側で仕切り板に溶質の結晶が析出したり、結晶析出による仕切り板等の腐食の恐れがない吸収冷凍機を提供することを目的とする。
【０００７】
【課題を解決するための手段】
上記課題を解決するため本発明は、吸収器、蒸発器、再生器、熱交換器、溶液ポンプ及び冷媒ポンプを具備する単効用又は多重効用吸収冷凍機において、少なくとも吸収器及び蒸発器を一つの缶胴に収めると共に、該吸収器と蒸発器の間に仕切り板を設け、該吸収器の伝熱管群を吸収器受け皿と缶胴と側板で囲い、該吸収器と該蒸発器との間には該側板と該仕切り板とに囲まれた吸収器側に含まれる蒸気相の空間を設けたことを特徴とする。
【０００８】
【発明の実施の形態】
以下、本発明の実施の形態例を図面に基づいて説明する。なお、本発明はこの実施の形態例に限定されるものではないことは当然である。
【０００９】
図１は本発明の吸収冷凍機の概略構成例を示す縦断面図である。図１において、Ａは吸収器、Ｅは蒸発器、Ｇは再生器、Ｃは凝縮器である。これら吸収器Ａ、蒸発器Ｅ、再生器Ｇ及び凝縮器Ｃは断面矩形状の缶胴１に収容されている。即ち、最下部に吸収器Ａを配置し、その上方に凝縮器Ｃを配置し、その上に再生器Ｇを配置し、更に吸収器Ａに隣接し且つ斜め上方に渡って蒸発器Ｅを配置している。そして吸収器Ａと凝縮器Ｃの間は仕切り板２で仕切られ、凝縮器Ｃと再生器Ｇの間は仕切り板３，３とエリミネータ５で仕切られ、吸収器Ａと蒸発器Ｅの間は仕切り板４とエリミネータ６で仕切られている。
【００１０】
吸収器Ａの下面には受け皿７が配置され、更に吸収器Ａの蒸発器Ｅの側には側板８が前記仕切り板４との間に間隔を設けて配置されている。即ち、吸収器Ａはその底面が受け皿７、その側面が前記側板８及び缶胴の一側部で囲われている。従って、蒸発器Ｅからの冷媒蒸気は仕切り板４の上部に配置されたエリミネータ６を通して、吸収器Ａ内に下方に向かって流入するようになっている。また、吸収器Ａと蒸発器Ｅの下方の冷媒収容部１６の間は側板８と仕切り板４で囲まれた吸収器Ａ側に含まれる蒸気相の空間９で仕切られている。
【００１１】
また、吸収器Ａは受け皿７の上方には不凝縮ガスを抽気するためのエジェクター１０が配置され、その上方に吸収器伝熱管群１１が配置され、その上方に濃溶液スプレー管１２が配置された構成である。また、凝縮器Ｃは凝縮器伝熱管群１３が配置された構成である。また、再生器Ｇは再生器伝熱管群１４が配置され、その上方に希溶液スプレー管１５が配置された構成である。
【００１２】
蒸発器Ｅ内は下方に冷媒収容部１６が配置され、その上方に蒸発器伝熱管群１７が配置され、更にその上方には冷媒スプレー管１８が配置された構成である。
【００１３】
上記構成の吸収冷凍機において、吸収器Ａで蒸発器Ｅからの冷媒蒸気を濃溶液スプレー管１２からスプレーされた濃溶液により吸収する。この冷媒蒸気を吸収した濃溶液は希溶液となり、受け皿７に収容される。この時不凝縮ガスはエジェクター１０で抽気され、図示しない抽気タンクに収容する。吸収器Ａの下部に溜った希溶液は溶液ポンプＳＰにより、管２０、熱交換器Ｘの被加熱側及び管２１を通り、希溶液スプレー管１５から再生器Ｇ内にスプレーされる。該再生器Ｇ内で希溶液は再生器伝熱管群１４内を流れる熱源２２により加熱され、冷媒は蒸発して濃縮される。
【００１４】
上記再生器Ｇで濃縮された濃溶液は管２３、熱交換器Ｘの加熱側及び管２４を通って濃溶液スプレー管１２から吸収器Ａ内にスプレーされ循環する。一方、再生器Ｇで蒸発した冷媒蒸気はエリミネータ５及び通路２５を通り、凝縮器Ｃに流れ込み、該凝縮器Ｃで凝縮器伝熱管群１３内を流れる冷却水２６により冷却されて冷媒液となり、管２７から蒸発器Ｅに流れ込む。
【００１５】
蒸発器Ｅでは、冷媒収容部１６内の冷媒液Ｑが冷媒ポンプＲＰにより、管１９から冷媒スプレー管１８に送られ、該冷媒スプレー管１８から蒸発器伝熱管群１７上にスプレーされる。スプレーされた冷媒は蒸発器伝熱管群１７内を流れる冷水２８から熱を奪い加熱蒸発する。そして熱の奪われた冷水２８は低温冷水となり冷房用に供給される。そして蒸発した冷媒蒸気はエリミネータ６を通って、吸収器Ａに流れ込み、上記のように濃溶液スプレー管１２からスプレーされた濃溶液に吸収される。
【００１６】
上記構成の吸収冷凍機において、もし吸収器Ａと蒸発器Ｅの冷媒収容部１６の間が仕切り板４だけで仕切られている場合（側板８が無い場合）、吸収器Ａの熱が直接冷媒収容部１６内の冷媒Ｑに伝わり、熱損失が生じると共に、吸収器Ａの側ではこの仕切り板４に接触した溶液が蒸発器Ｅの低温度により溶質の結晶が析出し、長時間に渡っては側面付近の流路を塞いでしまうという問題が生じたり、また結晶析出により、仕切り板４等の腐食が発生するという問題が起る。
【００１７】
しかしながら、本吸収冷凍機においては、吸収器Ａと蒸発器Ｅの下方の冷媒Ｑを収容する冷媒収容部１６の間は側板８と仕切り板４で囲まれた吸収器Ａ側に含まれる蒸気相の空間９で仕切られているから、吸収器Ａの熱が直接冷媒収容部１６内の冷媒に伝わりにくく、熱損失が生じることがないと共に、吸収器Ａの側では側板８に蒸発器Ｅの低温が伝わりにくく、溶液の溶質の結晶が側板８の面上等に析出することはない。
【００１８】
なお、上記実施形態例では、缶胴１内に吸収器Ａ、蒸発器Ｅ、再生器Ｇ及び凝縮器Ｃが収容されている例を示したが、本発明はこれに限定されるものではなく、少なくとも吸収器Ａ及び蒸発器Ｅが一つの缶胴に収められ、吸収器Ａの伝熱管群を該吸収器Ａの受け皿と缶胴と側板とで囲み、吸収器Ａと蒸発器Ｅとの間に側板と仕切り板で挟まれた吸収器Ａ側に含まれる冷媒蒸気相の空間を設けた構成であればその具体的構成はどのようなものであってもよい。
【００１９】
【発明の効果】
以上説明したように、本発明によれば、吸収器の伝熱管群を吸収器受け皿と缶胴と側板で囲い、該吸収器と該蒸発器との間には該側板と該仕切り板とに囲まれた吸収器側に含まれる蒸気相の空間を設けたので、下記のような優れた効果が得られる。
【００２０】
吸収器の熱が直接蒸発器内の冷媒に伝わり、熱損失が生じたり、吸収器側で側板の面上に溶質の結晶が析出したり、結晶析出による側板等の腐食の恐れがない吸収冷凍機を提供するとができる。
【図面の簡単な説明】
【図１】本発明の吸収冷凍機の概略構成例を示す縦断面図である。
【符号の説明】
Ａ 吸収器
Ｃ 凝縮器
Ｅ 蒸発器
Ｇ 再生器
Ｘ 熱交換器
ＳＰ 溶液ポンプ
ＲＰ 冷媒ポンプ
１ 缶胴
２ 仕切り板
３ 仕切り板
４ 仕切り板
５ エリミネータ
６ エリミネータ
７ 受け皿
８ 側板
９ 蒸気相の空間
１０ エジェクター
１１ 吸収器伝熱管群
１２ 濃溶液スプレー管
１３ 凝縮器伝熱管群
１４ 再生器伝熱管群
１５ 希溶液スプレー管
１６ 冷媒収容部
１７ 蒸発器伝熱管群
１８ 冷媒スプレー管[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a single-effect or multiple-effect absorption refrigerator, and more particularly to an improvement in the structure of an absorber.
[0002]
[Prior art]
In this type of absorption refrigerator, the pressure in the absorber portion becomes the lowest, and if there is non-condensable gas in the absorption refrigerator, the non-condensable gas collects in the absorber. Since the non-condensable gas adversely affects heat transfer and absorption, the non-condensable gas is collected in a bleed tank or the like by an extraction device such as an ejector to prevent the non-condensable gas from adversely affecting heat transfer and absorption.
[0003]
Refrigerant vapor flows into the absorber from the evaporator, but when the vapor is allowed to flow in from the side or lower surface of the absorber, the non-condensable gas collects at the center of the heat transfer tube group of the absorber and is sucked to the outside. There is a problem that becomes difficult. Therefore, surrounding the side and bottom of the absorber, restrict the inflow of vapor from the evaporator from the top, identify the portion where the non-condensable gas accumulates at the bottom of the absorber, and make it easier to suck the non-condensable gas. There are examples.
[0004]
In an absorption refrigerator having a can body having a rectangular cross section, a saucer is provided on the lower surface, the saucer is used as an enclosure for the bottom surface of the absorber, and a partition plate separating the evaporator and the absorber is used as an enclosure for the side surface of the absorber. One side of the can body can be used for further side enclosures.
[0005]
[Problems to be solved by the invention]
When the partition plate that separates the evaporator and the absorber as described above is used as a direct enclosure on the side surface of the absorber, the heat of the absorber is directly transmitted to the refrigerant in the evaporator, causing heat loss, and the absorber side Due to the low temperature of the evaporator, the solution in contact with the partition plate causes solute crystals to precipitate, which causes a problem of blocking the flow path near the side surface for a long time. In addition, there is a possibility that the partition plate and the like may be corroded due to crystal precipitation.
[0006]
The present invention has been made in view of the above points, the heat of the absorber is directly transmitted to the refrigerant in the evaporator, heat loss occurs, or solute crystals precipitate on the partition plate on the absorber side, An object of the present invention is to provide an absorption refrigerator having no fear of corrosion of a partition plate or the like due to precipitation.
[0007]
[Means for Solving the Problems]
In order to solve the above problems, the present invention provides a single-effect or multiple-effect absorption refrigerator including an absorber, an evaporator, a regenerator, a heat exchanger, a solution pump and a refrigerant pump, wherein at least the absorber and the evaporator are one. Along with being housed in the can body, a partition plate is provided between the absorber and the evaporator, and the heat transfer tube group of the absorber is surrounded by an absorber tray, a can body, and a side plate, and between the absorber and the evaporator. Is characterized in that a space for a vapor phase included on the absorber side surrounded by the side plate and the partition plate is provided.
[0008]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings. It should be noted that the present invention is not limited to this embodiment.
[0009]
FIG. 1 is a longitudinal sectional view showing a schematic configuration example of an absorption refrigerator of the present invention. In FIG. 1, A is an absorber, E is an evaporator, G is a regenerator, and C is a condenser. The absorber A, the evaporator E, the regenerator G and the condenser C are housed in a can body 1 having a rectangular cross section. That is, the absorber A is arranged at the lowest part, the condenser C is arranged above the absorber A, the regenerator G is arranged thereabove, and the evaporator E is arranged adjacent to the absorber A and obliquely upward. are doing. Then, the absorber A and the condenser C are partitioned by the partition plate 2, the condenser C and the regenerator G are partitioned by the partition plates 3, 3 and the eliminator 5, and the absorber A and the evaporator E are partitioned. It is partitioned by the partition plate 4 and the eliminator 6.
[0010]
A tray 7 is arranged on the lower surface of the absorber A, and a side plate 8 is arranged on the side of the evaporator E of the absorber A with an interval between the absorber and the partition plate 4. That is, the absorber A has its bottom face surrounded by the tray 7, and its side face is surrounded by the side plate 8 and one side of the can body. Therefore, the refrigerant vapor from the evaporator E flows downward into the absorber A through the eliminator 6 arranged on the upper part of the partition plate 4. Further, the space between the refrigerant storage section 16 below the absorber A and the evaporator E is partitioned by a vapor phase space 9 included on the absorber A side surrounded by the side plate 8 and the partition plate 4.
[0011]
In the absorber A, an ejector 10 for extracting uncondensed gas is disposed above the tray 7, an absorber heat transfer tube group 11 is disposed above the ejector 10, and a concentrated solution spray tube 12 is disposed above the absorber. Configuration. The condenser C has a configuration in which the condenser heat transfer tube group 13 is arranged. The regenerator G has a configuration in which a regenerator heat transfer tube group 14 is arranged, and a dilute solution spray tube 15 is arranged above the regenerator heat transfer tube group 14.
[0012]
In the evaporator E, a refrigerant accommodating portion 16 is disposed below, an evaporator heat transfer tube group 17 is disposed above the evaporator E, and a refrigerant spray tube 18 is further disposed above the evaporator heat transfer tube group 17.
[0013]
In the absorption refrigerator having the above configuration, the refrigerant vapor from the evaporator E is absorbed by the concentrated solution sprayed from the concentrated solution spray pipe 12 by the absorber A. The concentrated solution that has absorbed the refrigerant vapor becomes a dilute solution and is stored in the receiving tray 7. At this time, the non-condensable gas is extracted by the ejector 10 and stored in an extraction tank (not shown). The dilute solution collected in the lower part of the absorber A is sprayed into the regenerator G from the dilute solution spray pipe 15 through the pipe 20, the heated side of the heat exchanger X and the pipe 21 by the solution pump SP. In the regenerator G, the dilute solution is heated by the heat source 22 flowing in the regenerator heat transfer tube group 14, and the refrigerant is evaporated and concentrated.
[0014]
The concentrated solution concentrated in the regenerator G is sprayed from the concentrated solution spray tube 12 into the absorber A through the tube 23, the heating side of the heat exchanger X and the tube 24, and circulated. On the other hand, the refrigerant vapor evaporated in the regenerator G passes through the eliminator 5 and the passage 25, flows into the condenser C, is cooled by the cooling water 26 flowing through the condenser heat transfer tube group 13 in the condenser C, and becomes a refrigerant liquid. It flows into the evaporator E from the pipe 27.
[0015]
In the evaporator E, the refrigerant liquid Q in the refrigerant storage section 16 is sent from the pipe 19 to the refrigerant spray pipe 18 by the refrigerant pump RP, and is sprayed from the refrigerant spray pipe 18 onto the evaporator heat transfer pipe group 17. The sprayed refrigerant takes heat from the cold water 28 flowing in the evaporator heat transfer tube group 17 and heats and evaporates. Then, the cold water 28 from which heat has been removed becomes low-temperature cold water and is supplied for cooling. Then, the evaporated refrigerant vapor flows into the absorber A through the eliminator 6 and is absorbed by the concentrated solution sprayed from the concentrated solution spray pipe 12 as described above.
[0016]
In the absorption refrigerator having the above configuration, if the space between the absorber A and the refrigerant accommodating portion 16 of the evaporator E is separated only by the partition plate 4 (when there is no side plate 8), the heat of the absorber A is directly transferred to the refrigerant. The heat is transmitted to the refrigerant Q in the storage section 16 and heat loss occurs. At the side of the absorber A, the solution in contact with the partition plate 4 causes solute crystals to precipitate due to the low temperature of the evaporator E, and over a long period of time. This causes a problem that the flow path near the side surface is blocked, and also a problem that corrosion of the partition plate 4 and the like occurs due to crystal precipitation.
[0017]
However, in the present absorption refrigerator, the space between the absorber A and the refrigerant accommodating portion 16 for accommodating the refrigerant Q below the evaporator E contains the vapor phase contained on the side of the absorber A surrounded by the side plate 8 and the partition plate 4. Of the absorber A, it is difficult for the heat of the absorber A to be directly transmitted to the refrigerant in the refrigerant accommodating portion 16, and no heat loss occurs, and the evaporator E is attached to the side plate 8 on the side of the absorber A. The low temperature is not easily transmitted, and the solute crystals of the solution do not precipitate on the surface of the side plate 8 or the like.
[0018]
In the above-described embodiment, an example in which the absorber A, the evaporator E, the regenerator G, and the condenser C are accommodated in the can body 1 has been described, but the present invention is not limited to this. , At least the absorber A and the evaporator E are housed in one can body, and the heat transfer tube group of the absorber A is surrounded by the tray of the absorber A, the can body, and the side plate. Any specific configuration may be used as long as a space for the refrigerant vapor phase included on the side of the absorber A sandwiched between the side plate and the partition plate is provided.
[0019]
【The invention's effect】
As described above, according to the present invention, the heat transfer tube group of the absorber is surrounded by the absorber tray, the can body, and the side plate, and the side plate and the partition plate are provided between the absorber and the evaporator. Since the space for the vapor phase included in the enclosed absorber is provided, the following excellent effects can be obtained.
[0020]
Absorption refrigeration that does not cause the heat of the absorber to be directly transmitted to the refrigerant in the evaporator, causing heat loss, depositing solute crystals on the side plate surface on the absorber side, and corrosion of the side plate etc. due to crystal precipitation. Machine can be provided.
[Brief description of the drawings]
FIG. 1 is a longitudinal sectional view showing a schematic configuration example of an absorption refrigerator of the present invention.
[Explanation of symbols]
Reference Signs List A Absorber C Condenser E Evaporator G Regenerator X Heat exchanger SP Solution pump RP Refrigerant pump 1 Can body 2 Partition plate 3 Partition plate 4 Partition plate 5 Eliminator 6 Eliminator 7 Receiving plate 8 Side plate 9 Vapor phase space 10 Ejector 11 Absorber heat transfer tube group 12 Concentrated solution spray tube group 13 Condenser heat transfer tube group 14 Regenerator heat transfer tube group 15 Dilute solution spray tube 16 Refrigerant storage unit 17 Evaporator heat transfer tube group 18 Refrigerant spray tube

Claims (1)

吸収器、蒸発器、再生器、熱交換器、溶液ポンプ及び冷媒ポンプを具備する単効用又は多重効用吸収冷凍機において、
少なくとも前記吸収器及び前記蒸発器を一つの缶胴に収めると共に、該吸収器と蒸発器の間に仕切り板を設け、該吸収器の伝熱管群を吸収器受け皿と缶胴と側板で囲い、該吸収器と該蒸発器との間には該側板と該仕切り板とに囲まれた該吸収器側に含まれる蒸気相の空間を設けたことを特徴とする吸収冷凍機。In a single-effect or multiple-effect absorption refrigerator equipped with an absorber, an evaporator, a regenerator, a heat exchanger, a solution pump and a refrigerant pump,
At least the absorber and the evaporator are housed in one can body, a partition plate is provided between the absorber and the evaporator, and a heat transfer tube group of the absorber is surrounded by an absorber tray, a can body, and a side plate, An absorption refrigerator comprising a space between the absorber and the evaporator, the space for the vapor phase included on the side of the absorber surrounded by the side plate and the partition plate.
JP29334597A 1997-10-09 1997-10-09 Absorption refrigerator Expired - Lifetime JP3541119B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP29334597A JP3541119B2 (en) 1997-10-09 1997-10-09 Absorption refrigerator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP29334597A JP3541119B2 (en) 1997-10-09 1997-10-09 Absorption refrigerator

Publications (2)

Publication Number Publication Date
JPH11118277A JPH11118277A (en) 1999-04-30
JP3541119B2 true JP3541119B2 (en) 2004-07-07

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Family Applications (1)

Application Number Title Priority Date Filing Date
JP29334597A Expired - Lifetime JP3541119B2 (en) 1997-10-09 1997-10-09 Absorption refrigerator

Country Status (1)

Country Link
JP (1) JP3541119B2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1809966B1 (en) * 2004-10-13 2011-07-27 York International Corporation Falling film evaporator

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