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JP4693110B2 - Cold water production equipment - Google Patents

Cold water production equipment Download PDF

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Publication number
JP4693110B2
JP4693110B2 JP2005293267A JP2005293267A JP4693110B2 JP 4693110 B2 JP4693110 B2 JP 4693110B2 JP 2005293267 A JP2005293267 A JP 2005293267A JP 2005293267 A JP2005293267 A JP 2005293267A JP 4693110 B2 JP4693110 B2 JP 4693110B2
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Prior art keywords
regenerator
generator
refrigerator
cold water
compression
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JP2005293267A
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JP2007101092A (en
Inventor
義孝 坂野
陽一 藤田
俊一 江口
由実 竹内
立 本間
尚樹 刑部
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Tokyo Gas Co Ltd
Hitachi Global Life Solutions Inc
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Hitachi Appliances Inc
Tokyo Gas Co Ltd
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    • 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
    • Y02ATECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A30/00Adapting or protecting infrastructure or their operation
    • Y02A30/27Relating to heating, ventilation or air conditioning [HVAC] technologies
    • Y02A30/274Relating to heating, ventilation or air conditioning [HVAC] technologies using waste energy, e.g. from internal combustion engine
    • 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
    • Y02BCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/62Absorption based systems
    • Y02B30/625Absorption based systems combined with heat or power generation [CHP], e.g. trigeneration
    • 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
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P80/00Climate change mitigation technologies for sector-wide applications
    • Y02P80/10Efficient use of energy, e.g. using compressed air or pressurized fluid as energy carrier
    • Y02P80/15On-site combined power, heat or cool generation or distribution, e.g. combined heat and power [CHP] supply

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  • Sorption Type Refrigeration Machines (AREA)

Description

本発明は、圧縮式冷凍機と吸収式冷凍機とを組み合わせた冷水製造装置に係り、特に、空調負荷などの冷水供給負荷だけでなく電力負荷をも考慮した冷凍容量制御可能な冷水製造装置に好適なものである。   The present invention relates to a chilled water production apparatus that combines a compression refrigerator and an absorption refrigeration machine, and more particularly to a chilled water production apparatus capable of controlling a refrigeration capacity considering not only a chilled water supply load such as an air conditioning load but also an electric power load. Is preferred.

従来、圧縮式冷凍機と吸収式冷凍機を組み合わせて冷水を製造する冷水製造装置としては、特開平11−264625号公報(特許文献1)に示されたものがある。この冷水製造装置は、圧縮機、凝縮器、蒸発器を冷媒配管により接続して冷凍サイクルが構成されている圧縮式冷凍機と、蒸発器、吸収器、凝縮器、再生器を配管、流路により接続して冷凍サイクルが構成されている吸収式冷凍機とを有している。これら両冷凍機を冷水配管により直列に接続し、冷水を圧縮式冷凍機の蒸発器、吸収式冷凍機の蒸発器の順に流す。圧縮式冷凍機の蒸発器に流す冷却水の温度を冷却水入口温度センサーで検出し、この検出温度に応じて吸収式冷凍機入口の冷水の設定温度を温度調節計が設定する。そして、冷水温度を温度検出手段で検出し、この温度検出手段が検出した冷水の温度が設定温度になるように両冷凍機の冷凍容量を制御する。これにより、効率の良い圧縮式冷凍機がベース負荷に対応して制御され、吸収式冷凍機がピーク負荷に対応して制御される。   Conventionally, as a cold water production apparatus for producing cold water by combining a compression refrigerator and an absorption refrigerator, there is one disclosed in Japanese Patent Laid-Open No. 11-264625 (Patent Document 1). This chilled water production apparatus is composed of a compression refrigeration unit in which a refrigeration cycle is configured by connecting a compressor, a condenser, and an evaporator with a refrigerant pipe, and an evaporator, an absorber, a condenser, and a regenerator. And an absorption refrigerator having a refrigeration cycle connected thereto. Both these refrigerators are connected in series by cold water piping, and cold water is flowed in the order of the evaporator of the compression refrigerator and the evaporator of the absorption refrigerator. The temperature of the cooling water flowing through the evaporator of the compression refrigerator is detected by a cooling water inlet temperature sensor, and the temperature controller sets the set temperature of the cooling water at the absorption refrigerator inlet according to the detected temperature. Then, the chilled water temperature is detected by the temperature detecting means, and the refrigeration capacities of both refrigerators are controlled so that the temperature of the chilled water detected by the temperature detecting means becomes the set temperature. Thereby, an efficient compression type refrigerator is controlled corresponding to a base load, and an absorption refrigerator is controlled corresponding to a peak load.

特開平11−264625号公報Japanese Patent Laid-Open No. 11-264625

しかしながら、特許文献1には契約電力量に係る制御に関しては開示されておらず、上述した冷水温度による冷凍容量の制御では、電力負荷増減に適切に対応することが難しい、という問題があった。   However, Patent Document 1 does not disclose the control related to the contracted power amount, and the above-described control of the refrigeration capacity based on the chilled water temperature has a problem that it is difficult to appropriately respond to the increase or decrease in the power load.

本発明の目的は、発電機の排熱の利用により維持費を安く効率的に運転できると共に、契約電力量の範囲内に維持する運転と冷水供給負荷を賄う運転とを両立できる冷水製造装置を提供することにある。 An object of the present invention is to provide a chilled water production apparatus that can efficiently operate at a low maintenance cost by utilizing the exhaust heat of the generator, and that can maintain both the operation to maintain the contracted power amount and the operation to cover the chilled water supply load. It is to provide.

前述の目的を達成するための本発明の第1の態様は、発電機と、圧縮式冷凍機と、前記発電機の排熱を回収する吸収式冷凍機と、前記圧縮式冷凍機および前記吸収式冷凍機に直列または並列に接続され冷水供給負荷に冷水を供給する冷水配管と、前記圧縮式冷凍機および前記吸収式冷凍機を制御する制御装置と、を備え、前記吸収式冷凍機は前記発電機からの排熱を回収する発電機排熱用再生器と燃焼装置の燃焼により入熱する燃焼装置用再生器とを有した冷水製造装置であって、前記制御装置は、前記冷水製造装置を含む契約対象事業所内の機器の電力消費量を計測する電力量計測器により計測された電力負荷が契約電力量に近づいた際に前記電力量計測器から送信される契約電力量維持指令を受信した場合に、前記圧縮式冷凍機の冷凍容量を抑制する制御を行うと共に、前記発電機排熱用再生器及び前記燃焼装置用再生器を機能させて前記冷水供給負荷として必要な冷凍容量を賄うように前記吸収式冷凍機の冷凍容量を増大する制御を行い、前記契約電力量維持指令を受信していない場合に、前記燃焼装置用再生器よりも前記発電機排熱用再生器を優先して機能させて前記吸収式冷凍機の制御を行うものである。 A first aspect of the present invention for achieving the above object, generator and a compression refrigerating machine, the absorption chiller to recover waste heat of the generator, the compressor-type refrigerator and the absorption comprising a cold water pipe for supplying cold water to the connected chilled water supply load in series or in parallel to equation refrigerator, and a control unit for controlling the compression refrigerating machine and the absorption refrigerator, the absorption refrigerator is the A cold water production apparatus having a generator exhaust heat regenerator that recovers exhaust heat from a generator and a combustion apparatus regenerator that receives heat by combustion of the combustion apparatus , wherein the control device produces the cold water the contracted electric power amount maintaining command sent from the electric energy meter in power load measured by the energy measurement device for measuring the power consumption of the equipment contracted workplace containing device approaches the contracted power amount when receiving, frozen contents of the compression-type refrigerator Performs control to suppress increase the refrigeration capacity of the absorption chiller the generator caused to function waste heat regenerator and regenerator for the combustion device so as to cover the required refrigeration capacity as the cold water supply load When the contract electric energy maintenance command is not received, the generator exhaust heat regenerator is given priority over the combustion device regenerator to control the absorption chiller. Is what you do .

係る本発明の第1の態様におけるより好ましい具体的構成例は次の通りである。
(1)前記制御装置は、前記圧縮式冷凍機の圧縮機の吸込側流路断面積を変化させる制御弁を制御し、または前記圧縮機の回転数を制御して、前記圧縮式冷凍機の冷凍容量を制御するものであること
A more preferable specific configuration example in the first aspect of the present invention is as follows.
(1) The control device controls a control valve that changes a suction-side flow passage cross-sectional area of the compressor of the compression refrigerator, or controls the rotation speed of the compressor, Control the freezing capacity .

また、本発明の第2の態様は、原動機部および発電機部を有する発電機と、圧縮機、凝縮器、および蒸発器を冷媒配管により接続した冷凍サイクルと第1制御装置とを有する圧縮式冷凍機と、蒸発器、吸収器、凝縮器、および前記発電機の排熱を回収する再生器を配管、流路により接続した冷凍サイクルと第2制御装置とを有する吸収式冷凍機と、前記圧縮式冷凍機の蒸発器および前記吸収式冷凍機の蒸発器に直列または並列に接続され冷水供給負荷に冷水を供給する冷水配管と、前記圧縮式冷凍機および前記吸収式冷凍機を制御する制御装置と、を備え、前記吸収式冷凍機の再生器は前記発電機からの排熱を回収する発電機排熱用再生器と燃焼装置の燃焼により入熱する燃焼装置用再生器とを有した冷水製造装置であって、前記第1制御装置は、前記冷水製造装置を含む契約対象事業所内の機器の電力消費量を計測する電力量計測器により計測された電力負荷が契約電力量に近づいた際に前記電力量計測器から送信される契約電力量維持指令を受信した場合に、前記圧縮式冷凍機の冷凍容量を抑制する制御を行い、前記第2制御装置は、前記契約電力量維持指令を受信した場合に、前記発電機排熱用再生器及び前記燃焼装置用再生器を機能させて前記冷水供給負荷として必要な冷凍容量を賄うように前記吸収式冷凍機の冷凍容量を増大する制御を行い、前記契約電力量維持指令を受信していない場合に、前記燃焼装置用再生器よりも前記発電機排熱用再生器を優先して機能させて前記吸収式冷凍機の制御を行うものである。 Moreover, the 2nd aspect of this invention is a compression type which has the generator which has a motor | power_engine part and a generator part, the refrigerating cycle which connected the compressor, the condenser, and the evaporator with refrigerant | coolant piping, and a 1st control apparatus. An absorption refrigerator having a refrigerator, an evaporator, an absorber, a condenser, and a refrigerating cycle in which a regenerator for recovering exhaust heat of the generator is connected by a pipe and a flow path, and a second control device; A chilled water pipe connected in series or in parallel to the evaporator of the compression chiller and the evaporator of the absorption chiller to supply cold water to a chilled water supply load, and a control for controlling the compression chiller and the absorption chiller And the regenerator of the absorption refrigeration machine has a generator exhaust heat regenerator that recovers exhaust heat from the generator and a combustion apparatus regenerator that receives heat by combustion of the combustion device An apparatus for producing cold water comprising the first control device The contract power load measured by the energy measurement device for measuring the power consumption of the equipment contracted workplace including the cold water-producing device is transmitted from the electric energy meter when approaching the contracted power amount When the power amount maintenance command is received, control for suppressing the refrigeration capacity of the compression refrigerator is performed , and when the contract power amount maintenance command is received , the second control device is for the generator exhaust heat. Control the regenerator and the regenerator for the combustion device to increase the refrigeration capacity of the absorption chiller so as to cover the refrigeration capacity necessary as the cold water supply load, and receive the contract power maintenance command If not, the generator exhaust heat regenerator is given priority over the combustion device regenerator to control the absorption chiller .

本発明の冷水製造装置によれば、発電機の排熱の利用により維持費を安く効率的に運転できると共に、契約電力量の範囲内に維持する運転と冷水供給負荷を賄う運転とを両立できる。 According to the chilled water production apparatus of the present invention, the maintenance cost can be efficiently operated by using the exhaust heat of the generator, and the operation for maintaining the contracted power amount and the operation for covering the chilled water supply load can be achieved at the same time. .

以下、本発明の複数の実施形態について図を用いて説明する。各実施形態の図における同一符号は同一物または相当物を示す。なお、それぞれの実施形態を必要に応じて適宜に組み合わせることにより、さらに効果的なものとすることができる。
(第1実施形態)
本発明の第1実施形態の冷水製造装置を図1を用いて説明する。図1は本発明の第1実施形態の冷水製造装置の構成図である。
Hereinafter, a plurality of embodiments of the present invention will be described with reference to the drawings. The same reference numerals in the drawings of the respective embodiments indicate the same or equivalent. In addition, it can be made more effective by combining each embodiment suitably as needed.
(First embodiment)
The cold water manufacturing apparatus of 1st Embodiment of this invention is demonstrated using FIG. FIG. 1 is a configuration diagram of a cold water production apparatus according to a first embodiment of the present invention.

冷水製造システム100は、空調機器に冷水を供給するための冷水製造装置50と、この冷水製造装置50を含む契約対象事業所内の機器の電力消費量を計測するための電力消費量計測装置60とを備えて構成されている。   The chilled water manufacturing system 100 includes a chilled water manufacturing device 50 for supplying chilled water to an air conditioner, and a power consumption measuring device 60 for measuring the power consumption of the equipment in the contracted office including the chilled water manufacturing device 50. It is configured with.

冷水製造装置50は、圧縮式冷凍機51と、吸収式冷凍機52と、発電機53と、冷水配管54と、冷却水配管55と、制御装置56とを備えて構成されている。この制御装置56は、圧縮式冷凍機51に備えられた第1制御装置56aと、吸収式冷凍機52に備えられた第2制御装置56bとを備えて構成されている。なお、制御装置56は、一つの制御装置で構成された集中制御方式のものであってもよく、或いは、さらに分散された制御方式のものであってもよい。   The cold water manufacturing apparatus 50 includes a compression refrigerator 51, an absorption refrigerator 52, a generator 53, a cold water pipe 54, a cooling water pipe 55, and a control device 56. The control device 56 includes a first control device 56 a provided in the compression refrigerator 51 and a second control device 56 b provided in the absorption refrigerator 52. The control device 56 may be a centralized control method configured by one control device, or may be a more distributed control method.

また、電力量計測装置60は、契約対象事業所内の機器に電力を供給している電力配線61の供給電圧を検出して変圧する変圧器18と、電力配線61の供給電流を検出して変流する変流器19と、これらに接続されて電動機1により消費される電力量を含む事業所内全負荷により消費される電力量を計測する電力量計測器20と、を備えて構成されている。   The power amount measuring device 60 detects the supply voltage of the power wiring 61 that supplies power to the equipment in the contracted office, and transforms the power supply 61 by detecting the supply current of the power wiring 61. A current transformer 19 that flows, and an electric energy measuring device 20 that measures the electric energy consumed by the full load in the office including the electric energy consumed by the electric motor 1 connected thereto. .

冷水製造装置50における圧縮式冷凍機51は、冷凍サイクルと、圧縮機を駆動する電動機1と、第1制御装置56aとを備えて構成されている。ここで、冷凍サイクルは、冷媒を圧縮する圧縮機と、高温・高圧に圧縮された冷媒を凝縮させて冷却水配管55に放熱する凝縮器3と、凝縮された冷媒を膨張して減圧する膨張装置7と、減圧された冷媒を蒸発させて冷水配管54から吸熱(冷水配管54を冷却)する蒸発器4と、圧縮機2の吸込側流路断面積を変化させる冷媒ガス制御弁5とを冷媒配管により接続して構成されている。冷媒ガス制御弁5は弁駆動装置6により駆動される。第1制御装置56aは、電力量計測装置20による計測結果や、冷水配管54および冷凍サイクルの冷媒配管に設けられた各種センサーによる計測結果や、第2制御装置56bからの制御信号や、運転指令信号などに基づいて、電動機1および弁駆動装置6の制御を含む圧縮式冷凍機51の制御、および第2制御装置56bへの制御信号の送信を行うように構成されている。 The compression refrigerator 51 in the cold water manufacturing apparatus 50 includes a refrigeration cycle, an electric motor 1 that drives the compressor 2 , and a first controller 56a. Here, the refrigeration cycle includes a compressor 2 that compresses the refrigerant, a condenser 3 that condenses the refrigerant compressed to high temperature and high pressure and dissipates heat to the cooling water pipe 55, and expands and decompresses the condensed refrigerant. An expansion device 7, an evaporator 4 that evaporates the decompressed refrigerant and absorbs heat from the cold water pipe 54 (cools the cold water pipe 54), a refrigerant gas control valve 5 that changes the suction-side flow passage cross-sectional area of the compressor 2, Are connected by refrigerant piping. The refrigerant gas control valve 5 is driven by a valve driving device 6. The first control device 56a is a measurement result by the electric energy measuring device 20, a measurement result by various sensors provided in the chilled water pipe 54 and the refrigerant pipe of the refrigeration cycle, a control signal from the second control device 56b, and an operation command. Based on the signal etc., it is configured to control the compression refrigerator 51 including control of the electric motor 1 and the valve driving device 6 and to transmit a control signal to the second control device 56b.

吸収式冷凍機52は、蒸発器8、吸収器9、凝縮器10、再生器30、燃料制御弁13を配管、流路により接続した冷凍サイクルと、第2制御装置56bとを備えて構成されている。再生器30は、発電機53からの排熱を回収する発電機排熱用再生器(第1再生器)12と、バーナなどの燃焼装置11aの燃焼により入熱する燃焼装置用再生器(第2再生器)11とを有している。燃焼装置用再生器11には燃料配管15を通して燃料が供給される。燃料配管15には燃料制御弁13が設けられ、燃料制御弁13は弁駆動装置14により駆動される。第2制御装置56bは、冷凍サイクルの配管、流路に設けられたセンサーによる計測結果や、第1制御装置56aからの制御信号や、運転指令信号などに基づいて、弁駆動装置14の制御を含む吸収式冷凍機52の制御、および第1制御装置56aの制御を行うように構成されている。   The absorption chiller 52 includes a refrigeration cycle in which an evaporator 8, an absorber 9, a condenser 10, a regenerator 30, and a fuel control valve 13 are connected by piping and flow paths, and a second control device 56b. ing. The regenerator 30 includes a generator exhaust heat regenerator (first regenerator) 12 that recovers exhaust heat from the generator 53, and a combustion apparatus regenerator (first regenerator) that receives heat by combustion of a combustion apparatus 11a such as a burner. 2 regenerator) 11. Fuel is supplied to the combustion device regenerator 11 through a fuel pipe 15. A fuel control valve 13 is provided in the fuel pipe 15, and the fuel control valve 13 is driven by a valve driving device 14. The second control device 56b controls the valve drive device 14 based on the measurement results from the sensors provided in the piping and flow paths of the refrigeration cycle, the control signal from the first control device 56a, the operation command signal, and the like. It is comprised so that control of the absorption refrigeration machine 52 containing and control of the 1st control apparatus 56a may be performed.

発電機53は、ガスエンジンなどからなる原動機部16と、この原動機部16により駆動される発電機部17とを備えて構成されている。この発電機53は、発電した電力を所定の機器に供給すると共に、吸収式冷凍機52に排熱を供給するようになっている。原動機部16からの排熱は、吸収式冷凍機52の発電機排熱用再生器12に供給されて回収される。発電機53は、常時運転されるように用いられることが多い。   The generator 53 includes a prime mover unit 16 composed of a gas engine and the like, and a generator unit 17 driven by the prime mover unit 16. The generator 53 supplies the generated power to a predetermined device and supplies exhaust heat to the absorption chiller 52. The exhaust heat from the prime mover unit 16 is supplied to the generator exhaust heat regenerator 12 of the absorption refrigerator 52 and recovered. The generator 53 is often used so that it is always operated.

冷水配管54は、圧縮式冷凍機51と吸収式冷凍機52とに直列に接続され、冷水を圧縮式冷凍機51から吸収式冷凍機52の順に流して冷却した後に空調機器などに供給するものである。換言すれば、圧縮式冷凍機51と吸収式冷凍機52とは冷水配管21で接続されており、負荷側から戻った冷水は圧縮式冷凍機51に流入し、冷水配管21を通って吸収式冷凍機52に流入する。   The chilled water pipe 54 is connected in series to the compression chiller 51 and the absorption chiller 52, and cools water by flowing the chilled water in the order from the compression chiller 51 to the absorption chiller 52, and then supplies it to an air conditioner or the like. It is. In other words, the compression refrigerator 51 and the absorption refrigerator 52 are connected by the cold water pipe 21, and the cold water returned from the load side flows into the compression refrigerator 51 and passes through the cold water pipe 21 to absorb. It flows into the refrigerator 52.

冷却水配管55は、圧縮式冷凍機51の凝縮器3を冷却する冷却水を供給するための配管である。   The cooling water pipe 55 is a pipe for supplying cooling water for cooling the condenser 3 of the compression refrigerator 51.

かかる構成において、電力配線61を通して供給される電力消費量が契約電力量を超えそうになった場合(電力量計測器20により計測された電力負荷が契約電力に近づいた場合)には、電力量計測器20から第1制御装置56aに契約電力量維持指令信号が送信される。第1制御装置56aは、この契約電力量維持指令信号に基づいて、圧縮式冷凍機51の冷凍容量を抑制するように制御すると共に、第2制御装置56bに契約電力量維持指令信号を送信する。   In such a configuration, when the power consumption supplied through the power wiring 61 is likely to exceed the contract power amount (when the power load measured by the power meter 20 approaches the contract power), the power amount The contract power amount maintenance command signal is transmitted from the measuring instrument 20 to the first control device 56a. The first control device 56a performs control so as to suppress the refrigeration capacity of the compression chiller 51 based on the contract power amount maintenance command signal, and transmits the contract power amount maintenance command signal to the second control device 56b. .

ここで、この圧縮式冷凍機51の冷凍容量の制御は、圧縮式冷凍機51の圧縮機2の吸込側流路断面積を変化させるように冷媒ガス制御弁5の弁開度を制御することにより行うが、回転数制御可能な圧縮機を用いている場合には、圧縮機の回転数を制御するようにしてもよい。また、この契約電力量維持指令信号は、電力量計測器20から受信した契約電力量維持指令信号をそのまま転送してもよいが、第1制御装置56aの制御状態を付加して送信することが第2制御装置56bでの制御をより適切に行う上で好ましい。   Here, the control of the refrigerating capacity of the compression refrigerator 51 is to control the valve opening of the refrigerant gas control valve 5 so as to change the suction side flow passage cross-sectional area of the compressor 2 of the compression refrigerator 51. However, when a compressor capable of controlling the rotational speed is used, the rotational speed of the compressor may be controlled. Further, the contract power amount maintenance command signal may be transferred as it is from the contract power amount maintenance command signal received from the power meter 20, but may be transmitted with the control state of the first control device 56a added. This is preferable for more appropriate control by the second control device 56b.

第2制御装置56bは、受信した契約電力量維持指令信号に基づいて、冷水供給負荷、例えば空調負荷として必要な冷凍容量を賄うように吸収式冷凍機52を制御する。具体的には、第2制御装置56bは、契約電力量維持指令信号を受信していない場合には、燃料制御弁13を閉じて燃焼装置用再生器11を機能させず、発電機排熱用再生器12のみを機能させるように吸収式冷凍機52を制御すると共に、契約電力量維持指令信号を受信した場合には、弁駆動装置14を駆動して燃料制御弁13を開き、燃料配管15を通して燃料を供給して燃焼装置用再生器11を機能させ、吸収式冷凍機52の冷凍容量を増加するように制御する。   Based on the received contract power amount maintenance command signal, the second control device 56b controls the absorption chiller 52 so as to cover a refrigeration capacity required as a chilled water supply load, for example, an air conditioning load. Specifically, when the second control device 56b has not received the contract power amount maintenance command signal, the second control device 56b does not function the combustion device regenerator 11 by closing the fuel control valve 13, and for the generator exhaust heat. When the absorption chiller 52 is controlled so that only the regenerator 12 functions, and when the contract power amount maintenance command signal is received, the valve driving device 14 is driven to open the fuel control valve 13 and the fuel pipe 15 Fuel is supplied through the combustion device regenerator 11 so that the refrigerating capacity of the absorption refrigerating machine 52 is increased.

そして、電力負荷に余裕が出てきた場合には、契約電力量維持指令信号が解除されるので、第1制御装置56aは、これに基づいて、圧縮式冷凍機51の冷凍容量を増大して通常状態に戻し、効率のよい運転をするように制御すると共に、第2制御装置56bに解除信号を送信する。   Then, when there is a margin in the power load, the contract power amount maintenance command signal is canceled, so that the first controller 56a increases the refrigeration capacity of the compression refrigerator 51 based on this. The control is returned to the normal state to perform an efficient operation, and a release signal is transmitted to the second controller 56b.

第2制御装置56bは、この解除信号に基づいて、弁駆動装置14を駆動して燃料制御弁13を閉じ、燃焼装置用再生器11の機能を停止させ、吸収式冷凍機52の冷凍容量を低減するように制御する。   Based on this release signal, the second control device 56b drives the valve drive device 14 to close the fuel control valve 13, stops the function of the regenerator 11 for the combustion device, and increases the refrigerating capacity of the absorption chiller 52. Control to reduce.

かかる第1実施形態によれば、電力消費量が契約電力量を超えそうになった場合には、圧縮式冷凍機51の冷凍容量を抑制するように制御するので、事業所内全体の電力消費量を契約電力量の範囲内に維持することができると共に、圧縮式冷凍機51の冷凍容量を抑制した分を吸収式冷凍機52で賄うように制御するので、冷水供給負荷を適切に賄うことができる。   According to the first embodiment, when the power consumption is likely to exceed the contracted power amount, the control is performed so as to suppress the refrigeration capacity of the compression chiller 51, so that the power consumption of the entire office Can be maintained within the contracted electric energy range, and the absorption chiller 52 is controlled to cover the amount of refrigeration capacity of the compression chiller 51, so that the cold water supply load can be properly covered. it can.

すなわち、第1実施形態の冷水製造装置では、電力消費量が増加する夏期などに空調負荷を賄ったまま事業所内の電力消費量を削減することができるので、安定した冷水と同時に電力消費量の削減という効果を同時に提供することができる。換言すれば、事業所内の電力負荷が増加した際に圧縮式冷凍機の容量制御により電力消費量を削減することで、事業所内全体の電力消費量が契約電力量を超えないように制御することのできる冷水製造装置を提供することができる。また、圧縮式冷凍機が容量制御をしている時は吸収式冷凍機の冷凍容量を増加させるため、電力消費量を抑制したまま空調負荷を賄い、安定した冷水を供給できる冷水製造装置を提供することができる。   That is, in the chilled water production apparatus according to the first embodiment, the power consumption in the office can be reduced while covering the air conditioning load in the summer season when the power consumption increases. The effect of reduction can be provided at the same time. In other words, when the power load in the office increases, the power consumption is reduced by controlling the capacity of the compression chiller so that the power consumption of the entire office does not exceed the contracted power. It is possible to provide a cold water production apparatus capable of performing the above. In addition, when the capacity of the compression refrigerator is controlled, the refrigeration capacity of the absorption refrigerator is increased, so a chilled water production system that can supply stable chilled water by supplying air conditioning load while suppressing power consumption is provided. can do.

また、契約電力量維持指令信号を受信していない通常運転においては、発電機53からの排熱を回収する発電機排熱用再生器12を優先させて機能させているので、燃焼装置用再生器11を優先して機能させる場合に比較して、維持費を安く効率的に運転することができる。
(第2実施形態)
次に、本発明の第2実施形態について図2を用いて説明する。図2は本発明の第2実施形態の冷水製造装置の構成図である。この第2実施形態は、次に述べる点で第1実施形態と相違するものであり、その他の点については第1実施形態と基本的には同一であるので、重複する説明を省略する。
Further, in normal operation in which the contract power maintenance command signal has not been received, the generator exhaust heat regenerator 12 that recovers exhaust heat from the generator 53 is given priority to function, so that regeneration for the combustion device is performed. Compared with the case where the device 11 is preferentially functioned, the maintenance cost can be reduced and the operation can be efficiently performed.
(Second Embodiment)
Next, a second embodiment of the present invention will be described with reference to FIG. FIG. 2 is a configuration diagram of a cold water producing apparatus according to a second embodiment of the present invention. The second embodiment is different from the first embodiment in the points described below, and the other points are basically the same as those in the first embodiment, and thus redundant description is omitted.

この第2実施形態では、冷水配管54が、圧縮式冷凍機51および吸収式冷凍機52に並列に接続されているものであり、第1実施形態と同様の効果を得ることができると共に、圧縮式冷凍機51および吸収式冷凍機52のそれぞれの冷凍容量に対応して冷水供給を行うことができる。
(第3実施形態)
次に、本発明の第3実施形態について図3を用いて説明する。図3は本発明の第3実施形態の冷水製造装置の構成図である。この第3実施形態は、次に述べる点で第1実施形態と相違するものであり、その他の点については第1実施形態と基本的には同一であるので、重複する説明を省略する。
In the second embodiment, the cold water pipe 54 is connected in parallel to the compression refrigerator 51 and the absorption refrigerator 52, and the same effect as that of the first embodiment can be obtained, and the compression can be performed. Cold water can be supplied corresponding to the respective refrigeration capacities of the type refrigerator 51 and the absorption refrigerator 52.
(Third embodiment)
Next, a third embodiment of the present invention will be described with reference to FIG. FIG. 3 is a configuration diagram of a cold water producing apparatus according to a third embodiment of the present invention. The third embodiment is different from the first embodiment in the points described below, and the other points are basically the same as those in the first embodiment, and thus redundant description is omitted.

この第3実施形態では、発電機53が複数の発電機(本実施形態では、第1発電機53Aと第2発電機53B)を有し、吸収式冷凍機52は第1発電機53Aからの排熱を回収する第1発電機排熱用再生器12aと第2発電機53Bからの排熱を回収する第2発電機排熱用再生器12bとを有し、第2制御装置56bは、圧縮式冷凍機51の冷凍容量の制御に基づいて、第2発電機排熱用再生器12bを制御するものである。   In this third embodiment, the generator 53 has a plurality of generators (in this embodiment, a first generator 53A and a second generator 53B), and the absorption chiller 52 is supplied from the first generator 53A. The first generator exhaust heat regenerator 12a for recovering exhaust heat and the second generator exhaust heat regenerator 12b for recovering exhaust heat from the second generator 53B, the second controller 56b, Based on the control of the refrigeration capacity of the compression refrigerator 51, the second generator exhaust heat regenerator 12b is controlled.

この第3実施形態によれば、第1実施形態と同様に契約電力量の範囲内に維持しつつ、発電機53の排熱のみで冷水供給負荷を適切に賄う運転が可能な冷水製造装置を提供することができる。   According to the third embodiment, the chilled water producing apparatus capable of appropriately covering the chilled water supply load with only the exhaust heat of the generator 53 while maintaining within the range of the contracted power amount as in the first embodiment. Can be provided.

本発明の第1実施形態の冷水製造装置の構成図である。It is a block diagram of the cold water manufacturing apparatus of 1st Embodiment of this invention. 本発明の第2実施形態の冷水製造装置の構成図である。It is a block diagram of the cold water manufacturing apparatus of 2nd Embodiment of this invention. 本発明の第3実施形態の冷水製造装置の構成図である。It is a block diagram of the cold water manufacturing apparatus of 3rd Embodiment of this invention.

符号の説明Explanation of symbols

1…電動機、2…圧縮機、3…凝縮器、4…蒸発器、5…冷媒ガス制御弁、6…弁駆動装置、7…膨張装置、8…蒸発器、9…吸収器、10…凝縮器、11…燃焼装置用再生器、11a…燃焼装置、12…発電機排熱用再生器、13…燃料制御弁、14…弁駆動装置、15…燃料配管、16…原動機部、17…発電機部、18…変圧器、19…変流器、20…電力量計測器、30…再生器、50…冷水製造装置、51…圧縮式冷凍機、52…吸収式冷凍機、53…発電機、54…冷水配管、55…冷却水配管、56…制御装置、56a…第1制御装置、56b…第2制御装置、60…電力消費量計測装置、61…電力配線、100…冷水製造システム。 DESCRIPTION OF SYMBOLS 1 ... Electric motor, 2 ... Compressor, 3 ... Condenser, 4 ... Evaporator, 5 ... Refrigerant gas control valve, 6 ... Valve drive device, 7 ... Expansion device, 8 ... Evaporator, 9 ... Absorber, 10 ... Condensation 11 ... Combustion device regenerator, 11a ... Combustion device, 12 ... Generator exhaust heat regenerator, 13 ... Fuel control valve, 14 ... Valve drive device, 15 ... Fuel piping, 16 ... Motor unit, 17 ... Power generation Machine part, 18 ... transformer, 19 ... current transformer, 20 ... electric energy meter , 30 ... regenerator, 50 ... cold water production device, 51 ... compression refrigerator, 52 ... absorption refrigerator, 53 ... power generation , 54 ... cold water piping, 55 ... cooling water piping, 56 ... control device, 56a ... first control device, 56b ... second control device, 60 ... power consumption measuring device, 61 ... power wiring, 100 ... cold water production system .

Claims (3)

発電機と、
圧縮式冷凍機と、
前記発電機の排熱を回収する吸収式冷凍機と、
前記圧縮式冷凍機および前記吸収式冷凍機に直列または並列に接続され冷水供給負荷に冷水を供給する冷水配管と、
前記圧縮式冷凍機および前記吸収式冷凍機を制御する制御装置と、を備え
前記吸収式冷凍機は前記発電機からの排熱を回収する発電機排熱用再生器と燃焼装置の燃焼により入熱する燃焼装置用再生器とを有した冷水製造装置であって、
前記制御装置は、
前記冷水製造装置を含む契約対象事業所内の機器の電力消費量を計測する電力量計測器により計測された電力負荷が契約電力量に近づいた際に前記電力量計測器から送信される契約電力量維持指令を受信した場合に、前記圧縮式冷凍機の冷凍容量を抑制する制御を行うと共に、前記発電機排熱用再生器及び前記燃焼装置用再生器を機能させて前記冷水供給負荷として必要な冷凍容量を賄うように前記吸収式冷凍機の冷凍容量を増大する制御を行い、
前記契約電力量維持指令を受信していない場合に、前記燃焼装置用再生器よりも前記発電機排熱用再生器を優先して機能させて前記吸収式冷凍機の制御を行う
ことを特徴とする冷水製造装置。
A generator,
A compression refrigerator,
The absorption chiller to recover waste heat of the generator,
A chilled water pipe connected to the compression chiller and the absorption chiller in series or in parallel to supply chilled water to a chilled water supply load ; and
A control device for controlling the compression refrigerator and the absorption refrigerator , and
The absorption chiller is a cold water producing apparatus having a generator exhaust heat regenerator that recovers exhaust heat from the generator and a combustion apparatus regenerator that receives heat by combustion of the combustion apparatus ,
The controller is
The contract power amount transmitted from the power meter when the power load measured by the power meter that measures the power consumption of the equipment in the contracted establishment including the chilled water production apparatus approaches the contract power amount. When the maintenance command is received, control for suppressing the refrigerating capacity of the compression refrigerator is performed , and the generator exhaust heat regenerator and the combustion device regenerator are functioned to be necessary as the cold water supply load. Control to increase the freezing capacity of the absorption refrigerator to cover the freezing capacity,
When the contract power amount maintenance command is not received, the absorption chiller is controlled by causing the generator exhaust heat regenerator to function with priority over the combustion device regenerator. Cold water production equipment.
請求項1に記載の冷水製造装置において、
前記制御装置は、前記圧縮式冷凍機の圧縮機の吸込側流路断面積を変化させる制御弁を制御し、または前記圧縮機の回転数を制御して、前記圧縮式冷凍機の冷凍容量を制御するものである
ことを特徴とする冷水製造装置。
In the cold water manufacturing apparatus according to claim 1,
The control device controls a control valve that changes a suction side flow passage cross-sectional area of the compressor of the compression type refrigerator, or controls the number of rotations of the compressor, thereby reducing the refrigerating capacity of the compression type refrigerator. A cold water production apparatus characterized by being controlled.
原動機部および発電機部を有する発電機と、
圧縮機、凝縮器、および蒸発器を冷媒配管により接続した冷凍サイクルと第1制御装置とを有する圧縮式冷凍機と、
蒸発器、吸収器、凝縮器、および前記発電機の排熱を回収する再生器を配管、流路により接続した冷凍サイクルと第2制御装置とを有する吸収式冷凍機と、
前記圧縮式冷凍機の蒸発器および前記吸収式冷凍機の蒸発器に直列または並列に接続され冷水供給負荷に冷水を供給する冷水配管と、
前記圧縮式冷凍機および前記吸収式冷凍機を制御する制御装置と、を備え、
前記吸収式冷凍機の再生器は前記発電機からの排熱を回収する発電機排熱用再生器と燃焼装置の燃焼により入熱する燃焼装置用再生器とを有した冷水製造装置であって、
前記第1制御装置は、前記冷水製造装置を含む契約対象事業所内の機器の電力消費量を計測する電力量計測器により計測された電力負荷が契約電力量に近づいた際に前記電力量計測器から送信される契約電力量維持指令を受信した場合に、前記圧縮式冷凍機の冷凍容量を抑制する制御を行い、
前記第2制御装置は、
前記契約電力量維持指令を受信した場合に、前記発電機排熱用再生器及び前記燃焼装置用再生器を機能させて前記冷水供給負荷として必要な冷凍容量を賄うように前記吸収式冷凍機の冷凍容量を増大する制御を行い、
前記契約電力量維持指令を受信していない場合に、前記燃焼装置用再生器よりも前記発電機排熱用再生器を優先して機能させて前記吸収式冷凍機の制御を行う
ことを特徴とする冷水製造装置。
A generator having a prime mover part and a generator part;
A compression type refrigerator having a refrigeration cycle in which a compressor, a condenser, and an evaporator are connected by a refrigerant pipe and a first controller;
An absorption refrigerator having an evaporator, an absorber, a condenser, and a refrigerating cycle in which a regenerator for recovering exhaust heat of the generator is connected by a pipe and a flow path, and a second control device;
A chilled water pipe connected in series or parallel to the evaporator of the compression chiller and the evaporator of the absorption chiller to supply chilled water to a chilled water supply load;
A control device for controlling the compression refrigerator and the absorption refrigerator, and
The regenerator of the absorption chiller is a cold water production apparatus having a generator exhaust heat regenerator that recovers exhaust heat from the generator and a combustion apparatus regenerator that receives heat by combustion of the combustion device. ,
The first control device includes the power meter when the power load measured by the power meter that measures the power consumption of the equipment in the contract target office including the chilled water production device approaches the contract power. When the contract power amount maintenance command transmitted from is received, control to suppress the refrigeration capacity of the compression refrigeration machine,
The second control device includes:
When the contract electric energy maintenance command is received, the absorption chiller of the absorption chiller is configured so that the generator exhaust heat regenerator and the combustion device regenerator function to cover the refrigeration capacity required as the cold water supply load. Control to increase the freezing capacity,
When the contract power amount maintenance command is not received, the absorption chiller is controlled by causing the generator exhaust heat regenerator to function with priority over the combustion device regenerator. Cold water production equipment.
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JPH04106348A (en) * 1990-08-24 1992-04-08 Fujitsu General Ltd Device for limiting input current of air conditioner
JP2758517B2 (en) * 1991-07-11 1998-05-28 株式会社日立製作所 Heat source unit
JPH11264625A (en) * 1999-01-18 1999-09-28 Hitachi Ltd Cold water production apparatus and method for controlling refrigeration capacity

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