JP2806780B2 - Absorption refrigerator and its operation control method - Google Patents
Absorption refrigerator and its operation control methodInfo
- Publication number
- JP2806780B2 JP2806780B2 JP6008331A JP833194A JP2806780B2 JP 2806780 B2 JP2806780 B2 JP 2806780B2 JP 6008331 A JP6008331 A JP 6008331A JP 833194 A JP833194 A JP 833194A JP 2806780 B2 JP2806780 B2 JP 2806780B2
- Authority
- JP
- Japan
- Prior art keywords
- temperature
- low
- heat exchanger
- circuit
- regenerator
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Classifications
-
- 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
Landscapes
- Sorption Type Refrigeration Machines (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、コジェネレーション装
置等の低温排熱と燃料熱との二熱源駆動の吸収冷凍機及
びその運転制御方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an absorption refrigerator driven by two heat sources such as low-temperature exhaust heat and fuel heat of a cogeneration system and the like, and a method of controlling the operation thereof.
【０００２】[0002]
【従来の技術】例えば図５に示すように、コジェネレー
ション等からの低温排熱すなわち加熱温水又は加熱蒸気
（以下温水という）Ｗと、高質燃料すなわち都市ガスＧ
等の二熱源駆動の吸収冷凍機においては、二熱源駆動時
の性能を確保するため、２つの低温再生器（第１再生器
１３Ａ及び第２再生器１３Ｂ）及び凝縮器（第１凝縮器
１４Ａ及び第２凝縮器１４Ｂ）を必要とする。なお、図
中の符号１１は吸収器、１２は高温再生器、１５は蒸発
器、１６は低温溶液熱交換器である。2. Description of the Related Art For example, as shown in FIG.
And the like, in order to ensure the performance at the time of driving the two heat sources, two low temperature regenerators (the first regenerator 13A and the second regenerator 13B) and the condenser (the first condenser 14A). And the second condenser 14B). In the figure, reference numeral 11 denotes an absorber, 12 denotes a high-temperature regenerator, 15 denotes an evaporator, and 16 denotes a low-temperature solution heat exchanger.
【０００３】[0003]
【発明が解決しようとする課題】したがって、構造が肥
大化すると共に、制御が複雑になる不具合がある。Therefore, there is a problem that the structure is enlarged and the control is complicated.
【０００４】本発明は、構造を小型軽量化、単純化する
と共に、制御を簡素化する吸収冷凍機及びその運転制御
方法を提供することを目的としている。[0004] It is an object of the present invention to provide an absorption chiller whose structure is reduced in size and weight and simplified, and whose control is simplified, and an operation control method thereof.
【０００５】[0005]
【課題を解決するための手段】本発明の吸収冷凍機は、
コジェネレーション装置等の低温排熱回路に設けられ低
温排熱を該低温排熱回路下流側又は後記排熱−溶液熱交
換器側に切換える第１三方弁と、吸収器、凝縮器及び蒸
発器と、該吸収器と低温再生器とを接続する回路に設け
られた低温溶液熱交換器、排熱−溶液熱交換器、高温溶
液熱交換器、高温再生器及び前記排熱−溶液熱交換器側
を低温再生器側又は高温溶液熱交換器側に選択的に切換
える第２三方弁と、前記高温再生器の燃料供給回路に設
けられた燃料流量調整弁と、前記低温排熱回路に設けら
れた第１温度センサと、前記蒸発器からの冷房回路に設
けられた第２温度センサと、第１、第２三方弁、燃料流
量調整弁、第１、第２温度センサ及び溶液ポンプがそれ
ぞれ接続された制御ユニットとを備えている。The absorption refrigerator according to the present invention comprises:
A first three-way valve that is provided in a low-temperature exhaust circuit such as a cogeneration device and switches low-temperature exhaust heat to the downstream side of the low-temperature exhaust circuit or the exhaust heat-solution heat exchanger side described below; an absorber, a condenser, and an evaporator; A low-temperature solution heat exchanger, a waste heat-solution heat exchanger, a high-temperature solution heat exchanger, a high-temperature regenerator, and the waste heat-solution heat exchanger provided in a circuit connecting the absorber and the low-temperature regenerator. A second three-way valve for selectively switching to a low-temperature regenerator side or a high-temperature solution heat exchanger side; a fuel flow control valve provided in a fuel supply circuit of the high-temperature regenerator; A first temperature sensor, a second temperature sensor provided in a cooling circuit from the evaporator, a first and second three-way valve, a fuel flow control valve, first and second temperature sensors, and a solution pump are connected respectively. And a control unit.
【０００６】本発明の運転制御方法は、コジェネレーシ
ョン装置等からの低温排熱の温度が温度設定値以上であ
るか否かを判断し、温度設定値以下の場合はガス焚モー
ドを選択して冷房負荷に応じてガス流量を調節し、温度
設定値以上の場合は冷房負荷が負荷設定値以下であるか
否かを判断し、冷水出口温度が設定値以下の場合は排熱
焚モードを選択し、冷房負荷に応じて低温排熱の低温再
生器への流量を調節し、冷水出口温度が設定値以上の場
合は排熱投入プラスガス焚モードを選定し冷房負荷に応
じてガス流量を調節することを特徴としている。The operation control method according to the present invention determines whether or not the temperature of low-temperature exhaust heat from a cogeneration device or the like is equal to or higher than a temperature set value. Adjust the gas flow rate according to the cooling load.If it is higher than the temperature set value, judge whether the cooling load is lower than the load set value, and if the chilled water outlet temperature is lower than the set value, select the exhaust heat mode. Then, adjust the flow rate of low-temperature exhaust heat to the low-temperature regenerator according to the cooling load.If the chilled water outlet temperature is higher than the set value, select the exhaust heat input plus gas firing mode and adjust the gas flow rate according to the cooling load. It is characterized by doing.
【０００７】[0007]
【作用】本発明においては、コジェネレーション装置等
からの温水を、温水の量及び温度に応じて二熱源同時駆
動時は、排熱−溶液熱交換器側へ、温水だけで駆動する
ときは低温再生器側へ切換えて運転する。According to the present invention, hot water from a cogeneration system or the like is supplied to the exhaust heat / solution heat exchanger according to the amount and temperature of the hot water simultaneously when the two heat sources are simultaneously driven. Switch to the regenerator and run.
【０００８】[0008]
【実施例】以下図面を参照して本発明の実施例を説明す
る。Embodiments of the present invention will be described below with reference to the drawings.
【０００９】図１において、コジェネレーション装置１
の温水回路Ｌ１には、温水ポンプ２、第１三方弁ＶＨ、
三方弁３及び冷却塔４が介装されている。In FIG. 1, a cogeneration system 1
The hot water circuit L1 has a hot water pump 2, a first three-way valve VH,
A three-way valve 3 and a cooling tower 4 are provided.
【００１０】他方、全体を符号１０で示す吸収冷凍機に
は、公知のように、吸収器１１、高温再生器１２、低温
再生器１３、凝縮器１４及び蒸発器１５が設けられ、そ
れぞれ回路Ｌ２〜Ｌ５で接続されている。On the other hand, an absorption refrigerator generally designated by the reference numeral 10 is provided with an absorber 11, a high-temperature regenerator 12, a low-temperature regenerator 13, a condenser 14 and an evaporator 15 in a known manner. To L5.
【００１１】前記回路Ｌ２には、吸収器１１側から順
に、溶液ポンプＰ、低温溶液熱交換器１６、排熱−溶液
熱交換器１７、第２三方弁ＶＳ及び高温溶液熱交換器１
８が介装されている。なお、符号Ｐ１は冷媒ポンプであ
る。The circuit L2 includes a solution pump P, a low-temperature solution heat exchanger 16, a waste heat-solution heat exchanger 17, a second three-way valve VS, and a high-temperature solution heat exchanger
8 are interposed. Note that reference symbol P1 is a refrigerant pump.
【００１２】前記第１三方弁ＶＨは、温水回路Ｌ１の上
流側を下流側又は排熱−溶液熱交換器１７を経由する溶
液回路Ｌ６側に選択的に接続し、第２三方弁ＶＳは、吸
収器１１側を高温再生器１２側又は低温再生器１３側に
選択的に接続するようになっている。The first three-way valve VH selectively connects the upstream side of the hot water circuit L1 to the downstream side or the solution circuit L6 side via the waste heat / solution heat exchanger 17, and the second three-way valve VS The absorber 11 is selectively connected to the high-temperature regenerator 12 or the low-temperature regenerator 13.
【００１３】他方、温水回路Ｌ１には、温度ＴＨを検出
する第１温度センサＳ１が設けられ、蒸発器１５から冷
房負荷ＣＬへの冷水回路Ｌ７には、冷水出口温度ＴＬを
検出する第２温度センサＳ２が設けられている。また、
高温再生器１２へのガス供給回路Ｌ８には、流量調整弁
ＶＦが設けられている。そして、第１、第２三方弁Ｖ
Ｈ、ＶＳ、流量調整弁ＶＦ、第１、第２温度センサＳ
１、Ｓ２及び溶液ポンプＰは、それぞれ制御ユニット２
０に接続されている。また、各回路Ｌ１〜Ｌ８には、矢
印で示すように流れるようになっている。On the other hand, a first temperature sensor S1 for detecting the temperature TH is provided in the hot water circuit L1, and a second temperature sensor for detecting the cold water outlet temperature TL is provided in the cold water circuit L7 from the evaporator 15 to the cooling load CL. A sensor S2 is provided. Also,
The gas supply circuit L8 to the high temperature regenerator 12 is provided with a flow control valve VF. And the first and second three-way valves V
H, VS, flow control valve VF, first and second temperature sensors S
1, S2 and the solution pump P are respectively connected to the control unit 2
Connected to 0. The circuits L1 to L8 are designed to flow as indicated by arrows.
【００１４】次に、運転制御の態様を説明する。Next, the mode of operation control will be described.
【００１５】図２において制御ユニット２０は、第１、
第２センサＳ１、Ｓ２からの信号に基づき、温水回路Ｌ
１の温度ＴＨ及び冷水回路Ｌ７の温度ＴＬを検出し（ス
テップＳ１）、温度ＴＨが温水回路温度設定値以上か否
かすなわち温排熱があるか否かを判断する（ステップＳ
２）。以下の場合すなわちＮＯの場合は、後記するガス
焚モードを選択し（ステップＳ３）、以上の場合すなわ
ちＹＥＳだったら、温度ＴＬが冷水回路温度設定値より
小さいか否か、すなわち冷房負荷が排熱焚モードで充分
であるか否かを判断する（ステップＳ４）。ＹＥＳだっ
たら、排熱焚モードを選択し（ステップＳ５）、ＮＯの
場合は、排熱投入プラスガス焚モードを選択する（ステ
ップＳ６）。Referring to FIG. 2, the control unit 20 comprises:
Based on the signals from the second sensors S1 and S2, the hot water circuit L
1 and the temperature TL of the cold water circuit L7 are detected (step S1), and it is determined whether or not the temperature TH is equal to or higher than the hot water circuit temperature set value, that is, whether or not there is warm exhaust heat (step S1).
2). In the following cases, that is, in the case of NO, a gas-fired mode described later is selected (step S3). It is determined whether or not the firing mode is sufficient (step S4). If YES, the exhaust heat firing mode is selected (step S5), and if NO, the exhaust heat input plus gas firing mode is selected (step S6).
【００１６】ガス焚モードすなわち温排熱がない場合
は、第１三方弁ＶＨを全閉し、第２三方弁ＶＳを高温溶
液熱交換器１８側に切換えて全開し、流量調整弁ＶＦの
開度を調節すると共に、溶液ポンプＰの流量をガス焚の
設定循環量に設定する。すなわち、図３に示すように制
御ユニット２０は、温度ＴＬを検出して（ステップＳ１
０）、温度ＴＬが冷水回路温度設定値以下か否かを判断
し（ステップＳ１１）、ＹＥＳだったら、負荷に応じて
ガスＧの流量を減少させる方向に流量調整弁ＶＦの開度
を制御し（ステップＳ１２）。ＮＯの場合は、負荷に応
じてガスＧの流量を増加させる方向に流量調整弁ＶＦの
開度を制御する。In the gas-fired mode, that is, when there is no warm exhaust heat, the first three-way valve VH is fully closed, the second three-way valve VS is switched to the high-temperature solution heat exchanger 18 side and fully opened, and the flow control valve VF is opened. The degree is adjusted and the flow rate of the solution pump P is set to the set circulation amount for gas firing. That is, as shown in FIG. 3, the control unit 20 detects the temperature TL (step S1).
0), it is determined whether or not the temperature TL is equal to or lower than the chilled water circuit temperature set value (step S11). If YES, the opening of the flow control valve VF is controlled in a direction to decrease the flow rate of the gas G according to the load. (Step S12). In the case of NO, the opening of the flow control valve VF is controlled in a direction to increase the flow rate of the gas G according to the load.
【００１７】排熱焚モード時は、第１三方弁ＶＨを溶液
回路Ｌ６側に切換えて温度ＴＨ、ＴＬにより流量を調整
し、第２三方弁ＶＳを低温再生器１３側に切換えて全開
し、流量調整弁ＶＦを全閉すると共に、溶液ポンプＰの
流量を排熱焚の溶液循環量に設定する。すなわち、図４
に示すように制御ユニット２０は、温度ＴＬを検出して
（ステップＳ２０）、温度ＴＬが冷房回路温度設定値以
下か否かを判断する（ステップＳ２１）。ＹＥＳだった
ら、負荷に応じて温水量を減少させる方向に第１三方弁
ＶＨの開度を制御し（ステップＳ２２）、ＮＯの場合
は、負荷に応じて温水量を増加させる方向に第１三方弁
ＶＨの開度を制御する（ステップＳ２３）。In the exhaust heat mode, the first three-way valve VH is switched to the solution circuit L6 side to adjust the flow rate according to the temperatures TH and TL, and the second three-way valve VS is switched to the low temperature regenerator 13 to fully open. The flow rate control valve VF is fully closed, and the flow rate of the solution pump P is set to the amount of circulating solution for exhaust heat. That is, FIG.
As shown in (1), the control unit 20 detects the temperature TL (step S20) and determines whether the temperature TL is equal to or lower than the cooling circuit temperature set value (step S21). If YES, the opening of the first three-way valve VH is controlled in a direction to decrease the amount of hot water according to the load (step S22). If NO, the first three-way valve VH is increased in a direction to increase the amount of hot water according to the load. The opening of the valve VH is controlled (step S23).
【００１８】排熱投入プラスガス焚モードすなわち二熱
源駆動時は、第１三方弁ＶＨを溶液回路Ｌ６側に切換え
て全開とし、第２三方弁ＶＳを高温溶液熱交換器１８側
に切換えて全開とし、流量調整弁ＶＦを開いて開度を温
度ＴＬにより調節すると共に、溶液ポンプＰの流量をガ
ス焚の設定循環量に設定する。In the exhaust heat input plus gas firing mode, that is, when the two heat sources are driven, the first three-way valve VH is switched to the solution circuit L6 side to be fully opened, and the second three-way valve VS is switched to the high temperature solution heat exchanger 18 to be fully opened. The flow control valve VF is opened to adjust the opening degree by the temperature TL, and the flow rate of the solution pump P is set to the set circulation amount for gas firing.
【００１９】[0019]
【発明の効果】以上説明したように本発明によれば、従
来はそれぞれ２つを必要としていた低温再生器及び凝縮
器をそれぞれ１つにし、構造を小型軽量化、単純化する
と共に、制御を簡素化することができる。As described above, according to the present invention, two low-temperature regenerators and one condenser are conventionally required, and the structure is reduced in size and weight, and the control is simplified. It can be simplified.
【図１】本発明の一実施例を示す全体構成図。FIG. 1 is an overall configuration diagram showing one embodiment of the present invention.
【図２】概略の制御フローチャート図。FIG. 2 is a schematic control flowchart.
【図３】ガス焚モードの制御フローチャート図。FIG. 3 is a control flowchart of a gas firing mode.
【図４】排熱焚モードの制御フローチャート図。FIG. 4 is a control flowchart of a waste heat heating mode.
【図５】従来の吸収冷凍機の一例を示す全体構成図。FIG. 5 is an overall configuration diagram showing an example of a conventional absorption refrigerator.
【符号の説明】 ＣＬ・・・冷房負荷 Ｇ・・・都市ガス Ｌ１・・・温水回路 Ｌ２〜Ｌ５・・・回路 Ｌ６・・・温水回路 Ｌ７・・・冷水回路 Ｌ８・・・ガス供給回路 Ｐ・・・溶液ポンプ Ｐ１・・・冷媒ポンプ Ｓ１・・・第１温度センサ Ｓ２・・・第２温度センサ ＶＨ・・・第１三方弁 ＶＳ・・・第２三方弁 ＶＦ・・・燃料流量調整弁 １・・・コジェネレーション装置 ２・・・温水ポンプ ３・・・三方弁 ４・・・冷却塔 １０・・・吸収冷凍機 １１・・・吸収器 １２・・・高温再生器 １３・・・低温再生器 １３Ａ・・・第１低温再生器 １３Ｂ・・・第２低温再生器 １４・・・凝縮器 １４Ａ・・・第１凝縮器 １４Ｂ・・・第２凝縮器 １５・・・蒸発器 １６・・・低温溶液熱交換器 １７・・・排熱−溶液熱交換器 １８・・・高温溶液熱交換器 ２０・・・制御ユニット[Description of Signs] CL: Cooling load G: City gas L1: Hot water circuit L2-L5: Circuit L6: Hot water circuit L7: Cold water circuit L8: Gas supply circuit P ... Solution pump P1 ... Refrigerant pump S1 ... First temperature sensor S2 ... Second temperature sensor VH ... First three-way valve VS ... Second three-way valve VF ... Fuel flow rate adjustment Valve 1 ... Cogeneration device 2 ... Hot water pump 3 ... Three-way valve 4 ... Cooling tower 10 ... Absorptive refrigerator 11 ... Absorber 12 ... High temperature regenerator 13 ... Low-temperature regenerator 13A: first low-temperature regenerator 13B: second low-temperature regenerator 14: condenser 14A: first condenser 14B: second condenser 15: evaporator 16・ ・ ・ Low temperature solution heat exchanger 17 ・ ・ ・ Exhaust heat-solution heat exchanger 18 ・ ・ ・ High temperature solution Heat exchanger 20 ・ ・ ・ Control unit
───────────────────────────────────────────────────── フロントページの続き (58)調査した分野(Int.Cl.6，ＤＢ名) F25B 15/00 303 F25B 15/00 306──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int. Cl. 6 , DB name) F25B 15/00 303 F25B 15/00 306
Claims (2)
路に設けられ低温排熱を該低温排熱回路下流側又は後記
排熱−溶液熱交換器側に切換える第１三方弁と、吸収
器、凝縮器及び蒸発器と、該吸収器と低温再生器とを接
続する回路に設けられた低温溶液熱交換器、排熱−溶液
熱交換器、高温溶液熱交換器、高温再生器及び前記排熱
−溶液熱交換器側を低温再生器側又は高温溶液熱交換器
側に選択的に切換える第２三方弁と、前記高温再生器の
燃料供給回路に設けられた燃料流量調整弁と、前記低温
排熱回路に設けられた第１温度センサと、前記蒸発器か
らの冷房回路に設けられた第２温度センサと、第１、第
２三方弁、燃料流量調整弁、第１、第２温度センサ及び
溶液ポンプがそれぞれ接続された制御ユニットとを備え
たことを特徴とする吸収冷凍機。A first three-way valve provided in a low-temperature exhaust circuit such as a cogeneration system for switching low-temperature exhaust heat to a downstream side of the low-temperature exhaust circuit or to a waste heat-solution heat exchanger, which will be described later; Solution heat exchanger, waste heat-solution heat exchanger, high temperature solution heat exchanger, high temperature regenerator and the waste heat-provided in a circuit connecting the absorber and the low-temperature regenerator, and the absorber and the low-temperature regenerator. A second three-way valve for selectively switching the solution heat exchanger side to the low-temperature regenerator side or the high-temperature solution heat exchanger side, a fuel flow control valve provided in a fuel supply circuit of the high-temperature regenerator, A first temperature sensor provided in a circuit, a second temperature sensor provided in a cooling circuit from the evaporator, a first and a second three-way valve, a fuel flow control valve, a first and a second temperature sensor, and a solution. A pump having a control unit connected thereto. Collection refrigerator.
熱の温度が温度設定値以上であるか否かを判断し、温度
設定値以下の場合はガス焚モードを選択して冷房負荷に
応じてガス流量を調節し、温度設定値以上の場合は冷房
負荷が負荷設定値以下であるか否かを判断し、冷水出口
温度が設定値以下の場合は排熱焚モードを選択し、冷房
負荷に応じて低温排熱の低温再生器への流量を調節し、
冷水出口温度が設定値以上の場合は排熱投入プラスガス
焚モードを選定し冷房負荷に応じてガス流量を調節する
ことを特徴とする吸収冷凍機の運転制御方法。2. It is determined whether or not the temperature of the low-temperature exhaust heat from the cogeneration device or the like is equal to or higher than a temperature set value. Adjust the flow rate.If the temperature is higher than the set temperature, determine whether the cooling load is lower than the set value.If the chilled water outlet temperature is lower than the set value, select the exhaust heat mode To adjust the flow rate of low-temperature waste heat to the low-temperature regenerator,
An operation control method for an absorption chiller, wherein when the chilled water outlet temperature is equal to or higher than a set value, an exhaust heat input plus gas firing mode is selected and a gas flow rate is adjusted according to a cooling load.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6008331A JP2806780B2 (en) | 1994-01-28 | 1994-01-28 | Absorption refrigerator and its operation control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6008331A JP2806780B2 (en) | 1994-01-28 | 1994-01-28 | Absorption refrigerator and its operation control method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH07218018A JPH07218018A (en) | 1995-08-18 |
| JP2806780B2 true JP2806780B2 (en) | 1998-09-30 |
Family
ID=11690216
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6008331A Expired - Lifetime JP2806780B2 (en) | 1994-01-28 | 1994-01-28 | Absorption refrigerator and its operation control method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2806780B2 (en) |
-
1994
- 1994-01-28 JP JP6008331A patent/JP2806780B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH07218018A (en) | 1995-08-18 |
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