JP2015014379A - Air conditioning system - Google Patents

Air conditioning system Download PDF

Info

Publication number
JP2015014379A
JP2015014379A JP2013139803A JP2013139803A JP2015014379A JP 2015014379 A JP2015014379 A JP 2015014379A JP 2013139803 A JP2013139803 A JP 2013139803A JP 2013139803 A JP2013139803 A JP 2013139803A JP 2015014379 A JP2015014379 A JP 2015014379A
Authority
JP
Japan
Prior art keywords
heat
temperature
power generation
cooling water
air conditioning
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.)
Pending
Application number
JP2013139803A
Other languages
Japanese (ja)
Inventor
菊池 宏成
Hironari Kikuchi
宏成 菊池
宮島 裕二
Yuji Miyajima
裕二 宮島
渡邊 浩之
Hiroyuki Watanabe
浩之 渡邊
隆成 水島
Takanari Mizushima
隆成 水島
慶一 北島
Keiichi Kitajima
慶一 北島
Original Assignee
株式会社日立製作所
Hitachi Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 株式会社日立製作所, Hitachi Ltd filed Critical 株式会社日立製作所
Priority to JP2013139803A priority Critical patent/JP2015014379A/en
Publication of JP2015014379A publication Critical patent/JP2015014379A/en
Application status is Pending legal-status Critical

Links

Images

Classifications

    • 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
    • Y02A30/20Adapting or protecting infrastructure or their operation in buildings, dwellings or related infrastructures
    • Y02A30/27Relating to heating, ventilation or air conditioning [HVAC] technologies
    • Y02A30/276Relating to heating, ventilation or air conditioning [HVAC] technologies of the sorption type
    • Y02A30/277Absorption based systems
    • 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
    • Y02A30/20Adapting or protecting infrastructure or their operation in buildings, dwellings or related infrastructures
    • Y02A30/27Relating to heating, ventilation or air conditioning [HVAC] technologies
    • Y02A30/276Relating to heating, ventilation or air conditioning [HVAC] technologies of the sorption type
    • Y02A30/278Adsorption based systems
    • 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]
    • Y02B30/60Other technologies for heating or cooling
    • Y02B30/62Absorption based systems
    • 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]
    • Y02B30/60Other technologies for heating or cooling
    • Y02B30/64Adsorption based systems

Abstract

PROBLEM TO BE SOLVED: To provide an air conditioning system utilizing solar heat to supply cold heat.SOLUTION: The air conditioning system includes: a photovoltaic power generation unit having a photovoltaic power generation panel and a heat recovery device 21b recovering solar heat via a heat medium; and an adsorption-type freezer 10 having an evaporator 11c cooling cold water circulating via a first circulation flow path with evaporative latent heat of water, an adsorbent storing chamber 11a adsorbing moisture evaporated in the evaporator 11c with an adsorbent 12a, an adsorbent storing chamber 11b recycling an adsorbent 12b adsorbing the moisture by performing heat exchange of hot water absorbing heat in the heat recovery device 21b, and a condenser 11d cooling the moisture evaporated when recycled and condensing the moisture.

Description

  The present invention relates to an air conditioning system.

  A technique is known in which the energy of sunlight is extracted as heat energy and used as a heat source when performing heating operation or hot water supply operation. For example, Patent Document 1 describes a solar energy utilization system including a hybrid panel in which an air intake port is formed on one side wall and an air intake port is formed on the other side wall and a solar cell is accommodated therein. ing.

  In the solar energy utilization system described above, when the fan is driven, air is introduced through the air intake port, and when the air flows through the hybrid panel, the air absorbs heat from the solar heat and rises in temperature. The heated air is supplied into the room through the air outlet.

Japanese Patent Laid-Open No. 7-253249

  By the way, although patent document 1 describes the technique which heats air directly with solar heat (heat) and performs heating operation, when performing cooling operation (that is, supplying cold heat) It does not describe the technology that uses.

  Then, this invention makes it a subject to provide the air conditioning system which can supply cold heat using a solar heat.

In order to solve the above problems, an air conditioning system according to the present invention is installed on at least one surface of a solar power generation panel that generates power by being irradiated with sunlight and the solar power generation panel. And a regenerator for regenerating the adsorbent by exchanging heat with the heat medium absorbed by the heat recovery means.
Details will be described in an embodiment for carrying out the invention.

  According to the present invention, an air conditioning system capable of supplying cold using solar heat can be provided.

It is a lineblock diagram of the air-conditioning system concerning a 1st embodiment of the present invention. It is a block diagram containing an adsorption-type refrigerator. It is a block diagram containing the control apparatus of an air conditioning system. In the case of changing the frequency of the inverter, the generated power P s of the photovoltaic panels, explanatory view showing the power consumption P w of hot water pump, the power consumption P k of other devices, and a change in the magnitude of the evaluation function P val It is. It is a flowchart which shows the flow of the process which a control apparatus performs. It is a flowchart which shows the flow of the process which a control apparatus performs. It is a block diagram containing the control apparatus of the air conditioning system which concerns on 2nd Embodiment of this invention. It is a flowchart which shows the flow of the process which a control apparatus performs. It is a block diagram of the air conditioning system which concerns on 3rd Embodiment of this invention. When the temperature of the hot water stored in the hot water tank is used as a parameter, the generated power P s of the photovoltaic power generation panel, the consumed power P w of the hot water pump, the consumed power P c of the cooling water pump, the consumed power P t of the cooling tower, It is explanatory drawing which shows the change of the magnitude | size of power consumption Pk of other apparatuses, and evaluation function Pval . It is a flowchart which shows the flow of the process which a control apparatus performs. It is a flowchart which shows the flow of the process which a control apparatus performs. It is a block diagram of the absorption refrigerator with which the air conditioning system which concerns on 4th Embodiment of this invention is provided.

<< First Embodiment >>
<Configuration of air conditioning system>
FIG. 1 is a configuration diagram of an air conditioning system according to the present embodiment. The air conditioning system S is a system that collects solar heat when performing solar power generation and uses it as a heat source for regenerating the adsorbents 12 a and 12 b (see FIG. 2) of the refrigerator 10.
The air conditioning system S passes through the refrigerator 10, the hot water circulation system 20 that regenerates the adsorbents 12 a and 12 b (see FIG. 1) by releasing heat from the hot water, and the evaporator 11 c (see FIG. 2) of the refrigerator 10. A cooling water circulation system 30 that circulates the cooling water, a cooling water circulation system 40 that circulates the cooling water via the condenser 11d (see FIG. 2) of the refrigerator 10, and the like, and a control device 50.

(refrigerator)
FIG. 2 is a configuration diagram including an adsorption-type refrigerator. The refrigerator 10 mainly includes a housing 11, adsorbents 12 a and 12 b, and flow path switching valves 15 and 16. The housing 11 has two adsorbent storage chambers 11a and 11b, an evaporator 11c, and a condenser 11d. A predetermined amount of water (water, water vapor: second refrigerant) is stored in the housing 11.

  The flow path switching valves 15 and 16 are alternately switched in time according to a command from the control device 50 (see FIG. 1). In the state shown in FIG. 2, the moisture in the adsorbent storage chamber 11a is condensed by the cooling heat of the cooling water flowing through the heat transfer tube 13a and is adsorbed by the adsorbent 12a. Further, the adsorbent 12b is desorbed and regenerated by the warm water flowing through the heat transfer tube 13b.

That is, the adsorbent storage chamber 11a functions as an “adsorber” that adsorbs the water evaporated by the evaporator 11c with the adsorbent 12a. Further, the adsorbent storage chamber 11b functions as a “regenerator” that desorbs and regenerates the adsorbent 12b that has adsorbed moisture by exchanging heat with the hot water (heat medium) absorbed by the heat recovery device 21b.
When the flow path switching valves 15 and 16 are switched from the state shown in FIG. 2, the adsorbent storage chamber 11a functions as a “regenerator” and the adsorbent storage chamber 11b functions as an “adsorber”.
Hereinafter, the state shown in FIG. 2 will be described.

The adsorbent 12a is accommodated in the adsorbent accommodating chamber 11a so as to exchange heat with the cooling water flowing through the heat transfer tube 13a. The adsorbent 12a is, for example, a silica gel agent or a zeolite agent, and adsorbs moisture condensed in the adsorbent storage chamber 11a. Incidentally, the aforementioned “cooling water” is circulated by the cooling water pump 42 so as to pass through the cooling tower 41.
The heat transfer pipe 13a has an upstream end connected to the outlet of the cooling tower 41 via the flow path switching valve 15 and the pipe r1, and a downstream end connected to the inlet of the cooling tower 41 via the flow path switching valve 16 and the pipe r2. It is connected to the.

The other adsorbent storage chamber 11b is adjacent to the adsorbent storage chamber 11a in the left-right direction. The adsorbent 12b is accommodated in the adsorbent accommodating chamber 11b so as to exchange heat with the hot water flowing through the heat transfer tube 13b. Incidentally, the above-mentioned “hot water” is circulated by the hot water pump 22 so as to pass through the heat recovery device 21b.
The heat transfer pipe 13b has an upstream end connected to the outlet of the heat recovery device 21b via the flow path switching valve 15 and the pipe p1, and a downstream end connected to the heat recovery apparatus 21b via the flow path switching valve 16 and the pipe p2. Connected to the inlet.

  The evaporator 11c is formed adjacent to the lower part of the adsorbent storage chambers 11a and 11b, and is maintained at a low pressure (for example, 1/100 atm or less). A pipe 14 having a plurality of holes (not shown) for dripping condensed water from the condenser 11d faces in the evaporator 11c. The boiling point of water becomes lower as the pressure is lower.

  In the evaporator 11c, a heat transfer tube 13c through which the cold water from the cold water tank 31 flows is disposed below the pipe 14 described above. The heat transfer tube 13c has an upstream end communicating with the inside of the cold water tank 31 (high temperature area on the right side of the paper) via the pipe q1, and a downstream end communicating with the inside of the cold water tank 31 (low temperature area on the left side of the paper) via the pipe q2. ing. And the cold water which flows through the heat exchanger tube 13c is cooled by the evaporation latent heat of the water dripped from the piping 14.

That is, the evaporator 11c has a function of cooling the cold water (first refrigerant) circulating through the first circulation channel with the latent heat of evaporation of the water (second refrigerant) dripped from the pipe 14.
The “first circulation flow path” includes the pipes q1 and q2, the cold water tank 31, the pipe q3, the heat transfer pipe (not shown) of the indoor heat exchanger 34a, and the pipe q4.

  The evaporator 11c and the adsorbent storage chamber 11a are communicated / blocked with each other by opening / closing the opening / closing portion Kc. The opening / closing part Kc is opened by the pressure accompanying the volume expansion of the water evaporated by the evaporator 11c.

The condenser 11d is formed adjacent to the adsorbent storage chambers 11a and 11b. The condenser 11d is provided with a heat transfer tube 13d through which the cooling water from the cooling tower 41 flows, and a receiving tray R for receiving the condensed water is installed below the heat transfer tube 13d. The pipe 14 is connected to the tray R, and the water condensed in the condenser 11d is returned to the evaporator 11c via the tray R and the pipe 14.
That is, the condenser 11d has a function of cooling and condensing moisture (second refrigerant) evaporated during regeneration of the adsorbent 12b.

  The condenser 11d and the adsorbent storage chamber 11b are communicated / blocked with each other by opening / closing the opening / closing portion Kd. The opening / closing part Kd is opened by the pressure when the moisture is evaporated and the volume of the adsorbent 12b is expanded.

(Hot water circulation system)
Returning again to FIG. 1, the description will be continued. The hot water circulation system 20 has a function of performing solar power generation with the solar power generation panel 21a and regenerating the adsorbent 12b (12a) by recovering solar heat with the heat recovery device 21b. The hot water circulation system 20 includes a solar power generation unit 21, a hot water pump 22, and an inverter 23.
The solar power generation unit 21 has a solar power generation panel 21a that generates power by being irradiated with sunlight, and a heat recovery device 21b that recovers solar heat using hot water.

The photovoltaic power generation panel 21a has a plurality of solar cell modules (not shown) that convert light energy of sunlight into electrical energy. The photovoltaic power generation panel 21a is installed with a predetermined gap from the glass plate 21c that transmits sunlight. Thereby, the heat insulation of the photovoltaic power generation panel 21a can be improved (that is, the heat dissipation to the heat recovery device 21b can be improved).
The photovoltaic power generation panel 21a is electrically connected to a converter (not shown) that raises and lowers the generated voltage, a load (not shown) to which the generated power of the photovoltaic power generation panel 21a is supplied, and the like. .

The heat recovery device 21b (heat recovery means) is installed on the back surface of the photovoltaic power generation panel 21a and has a function of recovering solar heat using hot water (heat medium). The heat recovery device 21b is formed with a hot water flow path (not shown) through which hot water for recovering solar heat flows. In order to ensure the heat insulation between the hot water flowing through the hot water flow path and the outside air, the heat recovery device 21b is provided with a heat insulating material 21d.
The solar power generation unit 21 shown in FIG. 1 is an example, and other configurations may be used as long as solar power generation is possible and solar heat can be recovered.

The hot water pump 22 (first pump) is a pump that circulates hot water through the first circulation flow path according to a command from the control device 50, and is installed in the pipe p1.
The inverter 23 (first inverter) controls the frequency of a motor (not shown) of the hot water pump 22 and is driven according to a command from the control device 50.

  The temperature sensor 24 has a function of detecting the temperature of the hot water flowing out from the heat recovery device 21b, and is installed in the pipe p1. The flow rate sensor 25 has a function of detecting the flow rate of hot water flowing out from the heat recovery device 21b, and is installed in the pipe p1. The temperature sensor 26 has a function of detecting the temperature of the hot water flowing into the heat recovery device 21b, and is installed in the pipe p2.

(Cold water circulation system)
The cold water circulation system 30 has a function of cooling indoor air by circulating the cold water cooled in the refrigerator 10. The cold water circulation system 30 includes a cold water tank 31, cold water pumps 32 and 33, and an air conditioner 34.

  The cold water tank 31 is a cold storage tank that temporarily stores cold water (cold heat). The cold water cooled by the evaporator 11c (see FIG. 2) is mainly stored in the low temperature region on the left side of the paper with respect to the partition wall 31a shown in FIG. 1, and the indoor heat exchanger 34a is stored in the high temperature region on the right side of the paper. Thus, cold water that has absorbed heat from room air is mainly stored. The cold water tank 31 functions as a pipe line when the cold water flows and also functions as a buffer when supplying cold heat to the indoor air (load side).

The cold water pump 32 is a pump that pumps cold water absorbed by the indoor heat exchanger 34a to the evaporator 11c (see FIG. 2) via the pipe q1. The cold water pump 33 is a pump that pumps the cold water radiated by the evaporator 11c to the indoor heat exchanger 34a via the pipe q3.
Incidentally, since the density of water increases as the temperature decreases, it tends to settle as the temperature decreases. Therefore, in order to perform heat exchange in the indoor heat exchanger 34a with high efficiency, the downstream end of the pipe q2 and the upstream end of the pipe q3 are arranged at the lower part of the low-temperature region (left side of the paper). Further, the upstream end of the pipe q1 and the downstream end of the pipe q4 are arranged in the upper part of the above-described high temperature region (right side of the drawing).

The temperature sensor 35 has a function of detecting the temperature of cold water going to the evaporator 11c (see FIG. 2), and is installed in the pipe q1. The flow rate sensor 36 has a function of detecting the flow rate of cold water toward the evaporator 11c, and is installed in the pipe q1. The temperature sensor 37 has a function of detecting the temperature of the cold water radiated by the evaporator 11c, and is installed in the pipe q2.
The indoor heat exchanger 34a of the air conditioner 34 is a heat exchanger that exchanges heat between indoor air sucked by driving of an indoor fan (not shown) and cold water flowing through the indoor air exchanger 34a.

(Cooling water circulation system)
The cooling water circulation system 40 has a function of condensing the water vapor in the condenser 11d (see FIG. 2) with the cooling heat of the cooling water and condensing the water vapor in the adsorbent storage chamber 11a (see FIG. 2). The cooling water circulation system 40 includes a cooling tower 41 and a cooling water pump 42.

The cooling tower 41 shown in FIG. 1 has a blower 41a that blows outside air, and cools cooling water that has absorbed heat from water (second refrigerant) in the refrigerator 10 and raised its temperature. In the cooling tower 41, the cooling water is cooled by latent heat of evaporation when a part of the cooling water evaporates or heat exchange (radiation of heat from the cooling water to the outside air) accompanying direct contact between the cooling water and the outside air. The cooling tower 41 is, for example, an open type cooling tower, and is configured to flow cooling water into a filler (not shown) carried therein.
In addition, the “cooling water circulation passage” disposed so as to pass through the adsorbent storage chamber 11a and the condenser 11d (see FIG. 2) includes the pipe r1 and the heat transfer pipe 13a (or the heat transfer pipe 13b: see FIG. 2). , The pipe r2, and the heat transfer pipe (not shown) of the cooling tower 41.

The cooling water pump 42 is a pump that is installed in the above-described cooling water circulation passage (pipe r1) and pumps the cooling water that has been radiated and cooled by the cooling tower 41 toward the condenser 11d (see FIG. 2). .
The temperature sensor 43 has a function of detecting the temperature of the cooling water toward the condenser 11d, and is installed in the pipe r1. The flow sensor 44 has a function of detecting the flow rate of the cooling water toward the condenser 11d, and is installed in the pipe r1. The temperature sensor 45 has a function of detecting the temperature of the cooling water absorbed by the condenser 11d, and is installed in the pipe r2.

(Other sensors)
The solar radiation sensor 61 shown in FIG. 1 is a sensor that detects the amount of solar radiation irradiated on the photovoltaic power generation panel 21a. The temperature sensor 62 is a sensor that detects the temperature and humidity of the outside air, and the humidity sensor 63 is a sensor that detects the humidity of the outside air.

(Control device)
The control device 50 (control means) includes an electronic circuit (not shown) such as a CPU (Central Processing Unit), ROM (Read Only Memory), RAM (Random Access Memory), and various interfaces, and is set. Various processes are executed according to the program.
FIG. 3 is a configuration diagram including a control device of the air conditioning system. As illustrated in FIG. 3, the control device 50 includes a storage unit 51 and a control unit 52.

  The storage unit 51 (storage means) includes various information, mathematical formulas or databases including hot water pump characteristic information 51a, refrigerator characteristic information 51b, cooling tower characteristic information 51c, heat recovery apparatus characteristic information 51d, and power generation panel characteristic information 51e. Stored. Each characteristic information will be described later.

The control unit 52 controls driving of the device including the inverter 23 based on the detection value of each sensor described above and the information stored in the storage unit 51. Incidentally, the “other equipment” shown in FIG. 3 includes the refrigerator 10, the cold water pumps 32 and 33, the blower 41 a, and the cooling water pump 42.
In the following, the control unit 52 drives each of the above “other devices” at a constant power (constant rotation speed), and adjusts the frequency of the inverter 23 (see FIG. 1) according to the temperature and humidity of the outside air, the amount of solar radiation, and the like. It shall be.

<Evaluation function>
FIG. 4 shows changes in the magnitude of the generated power P s of the photovoltaic power generation panel, the consumed power P w of the hot water pump, the consumed power P k of other devices, and the evaluation function P val when the frequency of the inverter is changed. It is explanatory drawing which shows. When the frequency of the inverter 23 is increased, the flow rate of hot water pumped by the hot water pump 22 increases. Therefore, the amount of heat recovered by the heat recovery device 21b increases, and the amount of heat released from the solar power generation panel 21a increases.

  Here, the solar power generation panel 21a has a characteristic that, when the amount of solar radiation is constant, the power generation efficiency increases as the temperature decreases. Therefore, as shown in FIG. 4, as the frequency of the inverter 23 is increased, heat radiation of the photovoltaic power generation panel 21a is promoted, and the generated power is increased.

Further, when increasing the frequency of the inverter 23 also increases the power consumption P w of the hot water pump 22. Note that the total power consumption P k of the other devices (the refrigerator 10, the blower 41a, etc.) is constant.
Therefore, when the magnitude of the evaluation function P val obtained by subtracting the sum (or only the power consumption P w ) of the power consumption P w and P k from the power generation power P s of the photovoltaic power generation panel 21a is the maximum, It can be said that energy efficiency is maximized.

Since irradiation amount of sunlight that changes as time passes, also varies temporally generated power P w of the solar panels 21a. Moreover, the control apparatus 50 needs to control each apparatus so that the setting temperature of the room | chamber interior in which the air conditioner 34 is installed may be satisfied, respond | corresponding to the fluctuation | variation of the temperature and humidity of external air. In the present embodiment, the control unit 52 performs simulation under such conditions, and sets the frequency of the inverter 23 so as to maximize the evaluation function Pval .

<Operation of control device>
5 and 6 are flowcharts showing a flow of processing executed by the control device. In addition, at the time of “START” shown in FIG. 5, it is assumed that each pump, the blower 41a, and the like are driven at a predetermined rotational speed and are in a cooling operation. Processing for changing the frequency of the inverter 23 from this state will be described.

In step S101, the control unit 52 reads the detection value input from each sensor.
Control unit 52 in step S102 calculates the air-conditioning load Q 0 at the present time. The air conditioning load Q 0 described above is obtained based on the cold water temperature detected by the temperature sensors 35 and 37 (see FIG. 1) and the cold water flow rate detected by the flow sensor 36.

Step control unit 52 in step S103, the frequency f w of the inverter 23 connected to the hot water pump 22 and the maximum value f w (Max). The maximum value f w (Max) described above is an initial value when changing the frequency of the inverter 23 with a predetermined change width Δf (S116: see FIG. 6), and is set in advance.
In addition, the control unit 52 inputs “1” as the value k. The value k is a natural number that is incremented every time processing in steps S105 to S120 described later is performed.

Control unit 52 in step S104, the power P 1 of one of the cold water pump 32, the power consumption P 2 of the other cold water pump 33, air conditioner 34: calculating the power P A of (indoor fan or the like not shown) . As described above, the magnitude of the power consumption P 1, P 2, P A in this embodiment is constant.

The processing in steps S105 to S120 is a simulation when it is assumed that the inverter 23 is driven at the frequency set in step S103 (or S116 described later: see FIG. 6).
In step S105, the controller 52 determines the temperature of the hot water flowing through the pipe p1 (see FIG. 1) (hereinafter referred to as the hot water temperature T wH on the high temperature side) and the temperature of the cooling water flowing through the pipe r1 (hereinafter referred to as the low temperature). Side initial coolant temperature T cL ). The subscript w represents warm (warm water), the subscript c represents Cool (cooling water), the subscript H represents High (high temperature), and the subscript L represents Low (low temperature). For example, the control unit 52 inputs the outside air temperature read in step S101 as the initial value.

Control unit 52 in step S106 calculates the power consumption P w and hot water flow rate Q w of the hot water pump 22. That is, the control unit 52 refers to the hot water pump characteristic information 51a shown in FIG. 3 and calculates the power consumption P w and the hot water flow rate Q w of the hot water pump 22 corresponding to the frequency f w (Max) set in step S103. .
Here, the hot water pump characteristic information 51a (first pump characteristic information) specifies the power consumption P w and the hot water flow rate Q w of the hot water pump 22 corresponding to the frequency f w of the inverter 23 that drives the hot water pump 22. It is information to do.

In step S107, the control unit 52 calculates the power consumption P c and the cooling water flow rate Q c of the cooling water pump 42. In this embodiment, since the rotational speed of a motor (not shown) included in the cooling water pump 42 is constant, the power consumption P c and the cooling water flow rate Q c described above are fixed values.

In step S108, the control unit 52 determines the temperature of the hot water flowing through the pipe p2 (the low temperature side hot water temperature T wL ), the temperature of the cooling water flowing through the pipe r2 (the high temperature side cooling water temperature T cH ), and calculating the power P m of the refrigerator 10.
That is, the control unit 52 refers to the refrigerator characteristic information 51b shown in FIG. 3, the air conditioning load Q 0 calculated in step S102, the high temperature side was set at step S105 hot water temperature T wH and the low temperature side of the coolant temperature Based on T cL , the hot water flow rate Q w calculated in step S106, and the cooling water flow rate Q c calculated in step S107, the low temperature side hot water temperature T wL is calculated. Similarly, the control unit 52 calculates the high-temperature side cooling water temperature T cH and the power consumption P m of the refrigerator 10 based on the above-described values.

The above-described refrigerator characteristic information 51b refers to the hot water after radiating heat to the adsorbent 12b according to the air conditioning load, the temperature and flow rate of the hot water toward the adsorbent 12b, and the temperature and flow rate of the cooling water toward the condenser 11d. This is information for specifying the temperature. In addition, by referring to the refrigerator characteristic information 51b, the temperature of the cooling water after absorbing heat by the condenser 11d or the power consumption of the refrigerator 10 is specified according to each of the above-described values. You can also.
Incidentally, the power consumption of the refrigerator 10 is the power consumed by, for example, a vacuum pump (not shown) installed in the pipe 14 (see FIG. 2) and the flow path switching valves 15 and 16.

In step S109, the control unit 52 calculates the low-temperature side cooling water temperature T cL and the power consumption P t of the cooling tower 41. That is, the controller 52 refers to the cooling tower characteristic information 51c shown in FIG. 3, and the temperature and humidity of the outside air detected in step S101, the flow rate Q c of the cooling water calculated in step S107, and the high temperature calculated in step S108. Based on the side cooling water temperature T cH , the low temperature side cooling water temperature T cL is calculated.
Further, the control unit 52 refers to the cooling tower characteristic information 51c shown in FIG. 3 and calculates the power consumption P t (in this embodiment, a fixed value) of the cooling tower 41 (that is, the blower 41a).

Note that the cooling tower characteristic information 51c described above specifies the temperature of the cooling water after absorbing heat by the condenser 11d or the like, corresponding to the temperature and humidity of the outside air, the temperature and flow rate of the cooling water toward the condenser 11d, and the like. is information for or to identify the power consumption P t of the blower 41a.
Incidentally, the low-temperature side cooling water temperature T cL calculated in step S109 and the low-temperature side cooling water temperature T cL (= outside air temperature) set in step S105 are different from each other. While repeating the processes in steps S106~S111, a cooling water temperature T cL of currently calculated low-temperature side, the difference between the cooling water temperature T cL the cold side previously calculated converges smaller. The same applies to the hot water temperature T wH on the high temperature side.

In step S110, the control unit 52 calculates the surface temperature T s of the photovoltaic power generation panel 21a, the hot water temperature T wH on the high temperature side, and the generated power P s of the photovoltaic power generation panel 21a.
First, the control unit 52 refers to the heat recovery device characteristic information 51d shown in FIG. 3, and hot water flow rate Q w calculated in step S106, the hot water temperature T wL cold side calculated in step S108, based on, The amount of heat recovered per unit time by the heat recovery device 21b is calculated.
The above-described heat recovery device characteristic information 51d (heat recovery means characteristic information) is used to specify the heat recovery amount of the heat recovery device 21b corresponding to the temperature and flow rate of hot water flowing into the heat recovery device 21b. Information.

Next, the control unit 52 refers to the power generation panel characteristic information 51e shown in FIG. 3 and determines the solar power generation panel 21a based on the heat recovery amount and the solar radiation amount and the outside air temperature read in step S101. The surface temperature T s is calculated.
Further, the control unit 52 refers to the power generation panel characteristic information 51e, and calculates the generated power P s of the solar power generation panel 21a based on the surface temperature T s described above and the amount of solar radiation read in step S101. .

The power generation panel characteristic information 51e described above specifies the surface temperature of the solar power generation panel 21a corresponding to the amount of heat recovered by the heat recovery device 21b, the amount of solar radiation, and the outside air temperature. This is information for specifying the generated power of the photovoltaic power generation panel 21a corresponding to the amount.
Incidentally, the higher the surface temperature T s of the photovoltaic power generation panel 21a, the smaller the generated power P s of the photovoltaic power generation panel 21a. Further, the generated power P s of the solar panels 21a as solar radiation amount increases.

In step S111, the control unit 52 determines whether or not the hot water temperature T wH on the high temperature side and the cooling water temperature T cL on the low temperature side have converged. That is, the control unit 52, from the hot water temperature T wH on the high temperature side set in step S105 (= outside air temperature), the calculated high temperature side of the proportion prescribed value changes to the hot water temperature T wH in step S110 (e.g., 1 %) Is determined whether or not. The same applies to the cooling water temperature T cL .

When the calculations in steps S106 to S110 converge (S111 → Yes), the process of the control unit 52 proceeds to step S112 in FIG. On the other hand, when the calculations in steps S106 to S110 have not converged (S111 → No), the process of the control unit 52 returns to step S106.
In the next calculation process of steps S106 to S111, the low-temperature side cooling water temperature T cL calculated in step S109 and the high-temperature side hot water temperature T wH calculated in step S110 are used.

In step S112 of FIG. 6, the control unit 52 calculates the total power consumption ΣP of the entire system. That is, the control unit 52 calculates the power consumption P 1, P 2, P A calculated in step S104, the power P w calculated in step S106, the power P c calculated in step S107, in step S108 It calculates the power P m that, the power consumption P t calculated in step S109, the sum (i.e., total power consumption .SIGMA.P).

In step S113, the control unit 52 calculates the evaluation function P val (k). The evaluation function P val (k) is obtained by subtracting the total power consumption ΣP calculated in step S112 from the generated power P s calculated in step S110 at the time of convergence. Note that “k” shown in parentheses is the value k set in step S103 (incremented in step S117). As described above, the larger the value of the evaluation function P val (k), the higher the energy efficiency of the entire system.

In step S114, the control unit 52 determines whether or not this time is the first calculation (that is, k = 1). If it is the first calculation (S114 → Yes), the process of the control unit 52 proceeds to step S115.
Step control unit 52 in S115, the evaluation input evaluation was calculated as a function P val at step S113 function P val (1). The evaluation function P val described above is a value that is updated each time the frequency of the inverter 23 (see FIG. 1) is decreased by a predetermined value Δf w (S116).

In step S116, the control unit 52 sets the frequency f w of the inverter 23 to (f w (Max) −kΔf). The frequency f w (Max) described above is the value set in step S103 (see FIG. 1). The predetermined value Δf is set in advance in consideration of the calculation speed of the control unit 52 and the like.
In step S117, the control unit 52 increments the value k and returns to the process of step S105 in FIG.

If it is not the first calculation in step S114 of FIG. 6 (S114 → No), in step S118, the control unit 52 determines whether or not the evaluation function P val (k) is larger than the evaluation function P val described above. That is, the control unit 52 determines the maximum value P val of each evaluation function corresponding to the frequency (f w (Max), f w (Max) −Δf,..., F w (Max) − (k−1) Δf). The magnitude of the evaluation function P val (k) corresponding to the frequency (f w (Max) −kΔf) is compared.

When the evaluation function P val (k) is larger than the evaluation function P val (S118 → Yes), the process of the control unit 52 proceeds to step S119. Step control unit 52 in S119 replaces the value of the evaluation function P val the evaluation function P val (k) calculated this time in step S113. The control unit 52 replaces the frequency f w of the inverter 23, the frequency (f w (Max) -kΔf) .
On the other hand, when the evaluation function P val (k) is equal to or less than the evaluation function P val (S118 → No), the control unit 52 is maintained without replacing the value of the evaluation function P val and frequency f w, the process of step S120 move on.

In step S120, the control unit 52 determines whether or not the value k is equal to the value N. The above-described value N is a value that defines a lower limit (that is, f w (Max) − (N−1) Δf) when changing the frequency f w of the inverter 23, and is set in advance.
When the value k is equal to the value N (S120 → Yes), the process of the control unit 52 proceeds to step S121. In this case, the value of the evaluation function P val has N frequencies (f w (Max), f w (Max) −Δf, f w (Max) −2Δf,..., F w (Max) − (N−1 ) Δf) is the maximum value among the evaluation functions P val (1), P val (2),..., P val (N−1) corresponding to Δf).
On the other hand, when the value k is not equal to the value N (S120 → No), the process of the control unit 52 proceeds to step S116.

Step control unit 52 in S121 drives the inverter 23 at the frequency f w corresponding to the evaluation function P val that is finally stored. That is, the control unit 52 drives the inverter 23 at the frequency f w that maximizes the energy efficiency of the whole system, the processing is terminated (END). In addition, the control unit 52 operates other pumps, the refrigerator 10 and the like at a predetermined frequency.
Since the elevation angle of the sun changes as time passes, the control unit 52 executes the processes shown in FIGS. 5 and 6 a plurality of times per day (for example, once every several hours).

<Operation of air conditioning system>

Next, the flow of water in the refrigerator 10 when the process of step S121 described above (driving of the device including the inverter 23) is performed will be described with reference to FIG.
The cold water that has absorbed heat from the indoor air in the indoor heat exchanger 34a is pumped to the evaporator 11c via the pipe q1 when the cold water pump 32 is driven. The cold water flowing through the heat transfer tube 13 c is cooled by the latent heat of evaporation of water dropped from the pipe 14. The cooled cold water is returned to the cold water tank 31 through the pipe q2.

Further, the opening / closing part Kc is opened by the pressure when the evaporator 11c evaporates and the volume expands, and the water vapor flows into the adsorbent storage chamber 11a. In the adsorbent storage chamber 11a, water vapor dissipates heat into the cooling water flowing through the heat transfer tube 13a and condenses. The condensed water is adsorbed by the adsorbent 12a.
On the other hand, the moisture adsorbed by the adsorbent 12b absorbs heat from the hot water flowing from the heat recovery device 21b and evaporates. Thereby, the adsorbent 12b desorbs moisture and regenerates it.

The opening / closing part Kd is opened by the pressure when the adsorbent accommodating chamber 11b evaporates and the volume expands, and the water vapor flows into the condenser 11d. The steam described above is condensed by exchanging heat with the cooling water flowing through the heat transfer tube 13d in the condenser 11d. The condensed water flows into the evaporator 11c through the tray R and the pipe 14.
The control unit 52 switches the flow path switching valves 15 and 16 every predetermined time. Thereby, the adsorbents 12a and 12b can be alternately adsorbed / regenerated in time.

<Effect>
According to the air conditioning system S according to the present embodiment, solar power generation is performed using the solar power generation panel 21a, and solar heat recovered by the heat recovery device 21b is used for regeneration of the adsorbent 12b (12a). Thus, by collecting solar heat in addition to solar power generation, the energy efficiency of the entire system can be improved.
Furthermore, since the adsorbent 12b of the refrigerator 10 can be regenerated without using an electric heater or boiler, the energy efficiency of the entire system can be improved.

Further, the control unit 52 performs simulation for each of the N frequencies, and sets the frequency of the inverter 23 so as to maximize the evaluation function Pval . Therefore, the energy efficiency of the entire air conditioning system S can be maximized under the condition that the power consumption of the hot water pump 22 is variable and the power consumption of other devices is constant.

Moreover, the control part 52 can calculate the frequency of the inverter 23 appropriately with reference to the characteristic information of each apparatus containing the solar power generation panel 21a from which generated electric power changes with external temperature or the amount of solar radiation.
Furthermore, since the inverter 23 is installed only in the hot water pump 22, the amount of calculation performed by the control unit 52 can be relatively reduced, and the cost required for the entire system can be reduced.

<< Second Embodiment >>
Compared to the first embodiment, the air conditioning system S according to the second embodiment includes data stored in the storage unit 51A (see FIG. 7) and processing contents of the control unit 52A (see FIG. 7). Others are the same as those in the first embodiment, although different. Therefore, a different part from 1st Embodiment is demonstrated and description is abbreviate | omitted about the overlapping part.

<Configuration of control device>
FIG. 7 is a configuration diagram including a control device included in the air conditioning system according to the present embodiment. The control device 50A includes a storage unit 51A and a control unit 52A.
The storage unit 51A (storage means) in association with the detection value input from each sensor, the frequency f w of the inverter 23 which maximizes the evaluation function P val described above is previously detected value - the frequency table 51 g (Table ) Is stored.

  That is, regarding the solar radiation amount, the outside air temperature humidity, and the air conditioning load in the assumed range, the arithmetic processing (see FIGS. 4 and 5) described in the first embodiment is executed in advance by the control unit 52A, and the detected value-frequency. The table 51g is stored in the storage unit 51A.

<Operation of control device>
FIG. 8 is a flowchart showing a flow of processing executed by the control device.
After reading the detection value of each sensor in step S201, in step S202, the control unit 52A refers to the detection value-frequency table 51g shown in FIG. 7, and the frequency f w (inverter corresponding to the detection value read in step S201). 23 frequencies). This allows immediate obtain frequency f w which maximizes the evaluation function P val under conditions read in step S201.

That is, the control unit 52A determines the amount of solar radiation detected by the solar radiation sensor 61 (see FIG. 1), the outside air temperature detected by the temperature sensor 62, the outside air humidity detected by the humidity sensor 63, and the air conditioning load. The frequency of the inverter 23 corresponding to the included information is acquired with reference to the detected value-frequency table 51g.
The process of step S203 illustrated in FIG. 8 is the same as the process of step S121 described in the first embodiment (see FIG. 6), and thus description thereof is omitted.

<Effect>
In the air conditioning system S according to this embodiment, with respect to the inverter 23, the frequency f w which maximizes the evaluation function P val is detected values - is stored in advance in the storage unit 51A as the frequency table 51 g. Therefore, as compared with the first embodiment, it is possible to greatly reduce the calculation load of the control section 52A, can immediately obtain frequency f w that maximizes the energy efficiency of the whole system.

«Third embodiment»
Compared with the first embodiment, the air conditioning system S according to the third embodiment includes a hot water tank 27, another hot water pump 28, inverters 29, 38, 39, 46, and 47, and a control device 50. The processing contents are different, but the other processes are the same as those in the first embodiment. Therefore, a different part from 1st Embodiment is demonstrated and description is abbreviate | omitted about the overlapping part.

<Configuration of air conditioning system>
FIG. 9 is a configuration diagram of the air conditioning system according to the present embodiment.
The hot water tank 27 is a tank that temporarily stores hot water. The hot water absorbed by the heat recovery device 21b is mainly stored in the high temperature region on the left side of the drawing with respect to the partition wall 27a of the hot water tank 27. The hot water radiated by the refrigerator 10 is mainly stored in the low temperature region on the right side of the drawing with respect to the partition wall 27a. The downstream end of the pipe p1 is connected to the high temperature region described above, and the upstream end of the pipe p2 is connected to the low temperature region.
The hot water tank 27 functions as a pipe line when hot water flows, and also functions as a buffer when supplying heat to the adsorbent 12b (12a) of the refrigerator 10.

  The hot water pump 28 is a pump that pumps hot water stored in the hot water tank 27 via the pipe p3. The pipe p3 has an upstream end facing the hot water tank 27 and a downstream end connected to the flow path switching valve 15 (see FIG. 2). The temperature sensor 271 has a function of detecting the temperature of the hot water toward the adsorbent 12b (12a), and is installed in the pipe p3.

  The temperature sensor 272 has a function of detecting the temperature of hot water radiated to the adsorbent 12b (12a), and is installed in the pipe p4. The flow sensor 273 has a function of detecting the flow rate of hot water and is installed in the pipe p4. The pipe p4 has an upstream end connected to the flow path switching valve 16 (see FIG. 2) and a downstream end facing the hot water tank 27.

The inverter 29 (first inverter) drives the hot water pump 28 at a frequency according to a command from the control device 50. The inverter 46 (blower inverter) drives the blower 41 a at a frequency according to a command from the control device 50. The inverter 47 (inverter for cooling water pump) drives the cooling water pump 42 at a frequency according to a command from the control device 50.
The same applies to the inverter 38 installed in the cold water pump 32 and the inverter 39 installed in the cold water pump 33.

<Evaluation function>
FIG. 10 is an explanatory diagram showing the relationship between the generated power P s of the photovoltaic power generation panel, the power consumption of each device, and the evaluation function P val when the temperature of the hot water stored in the hot water tank is used as a parameter. What is actually operated is the frequency of each inverter. In FIG. 10, the horizontal axis represents the hot water temperature determined by the combination of the frequencies of the inverters 23, 29, 46, and 47.

The power generation efficiency of the high to the solar panels 21a hot water temperature flowing through the piping p2 falls, the generated power P s becomes smaller. Moreover, since the difference between the hot water temperature T wH on the high temperature side and the hot water temperature T cL on the low temperature side increases as the hot water temperature is increased, the flow rate (power consumption P w ) of the hot water pumps 22 and 28 and the cooling water are increased. The flow rate (power consumption P c ) of the pump 42 is reduced. Further, when increasing the above-mentioned hot water temperature, considering the heat balance in the refrigerating machine 10, the cooling water temperature becomes higher, the power consumption P t of the cooling tower 41 is reduced.
That is, the generated power P s of the solar panels 21a, hot water pump 22 and 28, cooling tower 41, and the power consumption of the cooling water pump 42, there is a trade-off between each other. Therefore, the optimal point X exists for an evaluation function P val from generated power P s by subtracting the total power consumption ΣP system-wide maximum.

<Operation of control device>
11 and 12 are flowcharts showing the flow of processing executed by the control device.
After calculating the air conditioning load Q 0 in step S102 of FIG. 11, in step S301, the control unit 52 sets the frequency of the inverters 23 and 29 to the maximum value f w (Max). In addition, the control unit 52 sets the frequency of the inverter 47 to the maximum value f c (Max) and sets the frequency of the inverter 46 to the maximum value f t (Max). Further, the control unit 52 inputs “1” as the value k. The value k is a natural number that is incremented after the process of step S304 (see FIG. 12) described later.

When the evaluation function P val (k) is larger than P val (that is, the maximum value of the evaluation function up to the value (k−1)) in step S118 of FIG. 12 (S118 → Yes), the processing of the control unit 52 is step. The process proceeds to S302. Step control unit 52 in S302 replaces the value of the evaluation function P val the evaluation function P val (k) calculated this time in step S113. Further, the control unit 52 replaces the frequency f w of the inverters 23 and 29 with the frequency f w (k). The same applies to the other inverters 46 and 47.
On the other hand, when the evaluation function P val (k) is equal to or less than P val (S118 → No), the control unit 52 maintains the evaluation function P val and the value of each frequency without replacement, and proceeds to the process of step S303.

Step control unit 52 in S303 determines the frequency f w, f c, whether to calculate the evaluation function P val for all combinations of f t. Here, “all combinations of frequencies f w , f c , and f t ” means frequencies {f w (Max), f w (Max) −Δf A ,..., F w (Max) − (N−1 ) Δf A,}, the frequency {f c (Max), f c (Max) -Δf B, ..., f c (Max) - (M-1) Δf B,}, and frequency {f t (Max), f t (Max) −Δf C ,..., f t (Max) − (K−1) Δf C } means all combinations. The values N, M, and K and the change widths Δf A , Δf B , and Δf C are set in advance.

When there is at least one frequency combination for which the evaluation function P val has not been calculated (S303 → No), the processing of the control unit 52 proceeds to step S304. Control unit 52 in step S304, as a combination that is not yet calculated evaluation function P val, change at least one of the frequency f w, f c, f t , step S105 (see FIG. 11) Proceed to processing.

Frequency f w, f c, when calculating the evaluation function P val for all combinations of f t (S303 → Yes), the control unit 52 in step S305, the evaluation function P val is the maximum frequency f w, f c , F t drive each inverter.

<Effect>
According to the air conditioning system S according to this embodiment, the evaluation function P val frequency f w of each inverter so as to maximize, f c, setting the f t. As described above, since the operation is performed at the optimum point X (see FIG. 10) at which the evaluation function P val becomes maximum with respect to the frequencies of the plurality of inverters 23, 28, 46, and 47, the energy efficiency of the entire system is improved as compared with the first embodiment. It can be further increased.

<< Fourth Embodiment >>
The air conditioning system S according to the fourth embodiment is different from the first embodiment in that an absorption refrigerator 10B (see FIG. 13) is provided instead of the adsorption refrigerator 10 described in the first embodiment. This is the same as the embodiment. The processing contents of the control device 50 are the same as those in the first embodiment (see FIGS. 5 and 6). Therefore, the structure of the refrigerator 10B different from 1st Embodiment is demonstrated, and description is abbreviate | omitted about the part which overlaps with 1st Embodiment.

<Structure of refrigerator>
FIG. 13 is a configuration diagram of an absorption chiller included in the air conditioning system according to the embodiment. As shown in FIG. 13, the absorption refrigerator 10 </ b> B includes an evaporator 101, an absorber 102, a regenerator 103, and a condenser 104.
The evaporator 101 evaporates water (second refrigerant) dripped through the pipe u1 under a low pressure (for example, 1/100 atm) and cools it with latent heat of evaporation. Inside the evaporator 101, a heat transfer tube 13c through which cold water absorbed by the indoor heat exchanger 34a flows is disposed.

  The absorber 102 absorbs water vapor (second refrigerant) flowing from the evaporator 101 through the pipe u2 with the absorbing liquid. In the absorber 102, an absorption liquid such as lithium bromide is stored, and a heat transfer tube 13a through which the cooling water radiated from the cooling tower 41 (see FIG. 1) flows is disposed. The absorption liquid regenerated by the regenerator 103 is dropped into the heat transfer tube 13a through the pipe u3.

The regenerator 103 heats the absorbing solution flowing from the absorber 102 through the pipe u4 to regenerate the absorbing solution. As shown in FIG. 13, the heat transfer tube 13b is arranged so that the hot water (heat medium) absorbed by the heat recovery device 21b exchanges heat with the absorbing liquid. Further, the lower part of the pipe u5 connected to the regenerator 103 is formed so that the regenerated absorption liquid is dropped in the absorber 102.
A pump 105 that pumps a low-concentration absorbing liquid that has absorbed moisture toward the regenerator 103 is installed in the pipe u4. The heat exchanger 106 is installed so as to exchange heat between the low-temperature absorption liquid flowing through the pipe u4 (heat transfer pipe) and the high-temperature absorption liquid flowing through the pipe u3 (heat transfer pipe).

  The condenser 104 cools and condenses moisture (second refrigerant) generated during regeneration of the absorbing liquid. The condenser 104 is connected to the regenerator 103 via the pipe u5, and guides water vapor generated in the regenerator 103 to itself. Inside the condenser 104, a heat transfer tube 13d through which the cooling water radiated from the cooling tower 41 (see FIG. 1) flows is disposed. The pipe u1 is configured to drop the condensed water toward the heat transfer tube 13c in the evaporator 101.

<Effect>
According to the air conditioning system S according to the present embodiment, solar power generation is performed using the solar power generation panel 21a, and solar heat recovered using the heat recovery device 21b is used for regeneration of the adsorbed liquid. Thus, by collecting solar heat in addition to solar power generation, the energy efficiency of the entire system can be improved.
Furthermore, since the absorption liquid of the refrigerator 10B can be regenerated without using an electric heater or a boiler, the energy efficiency of the entire system can be improved.

≪Modification≫
As mentioned above, although air-conditioning system S concerning the present invention was explained by each embodiment, the present invention is not limited to these statements and can change variously.
For example, in each of the above embodiments, the case where the solar radiation amount is detected using the solar radiation sensor 61 has been described, but the present invention is not limited thereto. That is, the solar radiation sensor 61 may be omitted, and the control device 50 may estimate the solar radiation amount based on date information and weather information.

  Moreover, although each said embodiment demonstrated the case where the heat recovery apparatus 21b with which the air conditioning system S was provided was one, it does not restrict to this. That is, the number and connection relationship of the heat recovery devices 21b (solar power generation units 21) may be changed as appropriate.

Moreover, although the control apparatus 50 demonstrated the case where the control apparatus 50 controlled the apparatus containing the inverter 23 so that the evaluation function Pval might be maximized in each said embodiment, it is not restricted to this. That is, the frequency of the inverter 23 and the like may be determined in consideration of another index (for example, power consumption of a fan that sends cold air to an indoor computer) in addition to the evaluation function Pval .

Moreover, although 3rd Embodiment demonstrated the case where the frequency of each inverter installed in each of the hot water pumps 22 and 28, the air blower 41a, and the cooling water pump 42 was changed, it is not restricted to this. In other words, at least one of the inverters may be changed so that the evaluation function P val is maximized.
Moreover, you may add the temperature control apparatus which adjusts the temperature of the hot water tank 27 (refer FIG. 9) to the air conditioning system S demonstrated in 3rd Embodiment. In this case, the control device 50 controls each pump, the blower 41a, and the temperature adjusting device described above based on the evaluation function Pval .

  Moreover, although each said embodiment demonstrated the case where the heat recovery apparatus 21b was installed in the back surface of the photovoltaic power generation panel 21a, it is not restricted to this. That is, you may install a heat recovery apparatus in at least one surface among the surface and the back surface of the photovoltaic power generation panel 21a.

Moreover, each said embodiment can be combined suitably. For example, combining the second embodiment and the third embodiment, the amount of solar radiation, the frequency of the inverter 23,29,46,47 (see Figure 9) which maximizes the evaluation function P val depending on the outside air temperature and humidity, etc. May be calculated and stored in advance in the storage unit 51A as the detected value-frequency table 51g (see FIG. 7).

  Moreover, in each said embodiment, the heat medium which heats the adsorbent 12b (12a) with the refrigerant | coolant (1st refrigerant | coolant) heat-exchanged with indoor air with the air conditioner 34, or the solar heat collect | recovered with the heat recovery apparatus 21b is water. Although the case has been described, a refrigerant other than water or a heat medium may be used.

S Air-conditioning system 10, 10B Refrigerator 11a, 102 Adsorber 11b, 103 Regenerator 11c, 101 Evaporator 11d, 104 Condenser 12a, 12b Adsorbent 21 Solar power generation unit 21a Solar power generation panel 21b Heat recovery device (heat recovery means)
22 Hot water pump (first pump, equipment)
23 Inverter (first inverter, equipment)
28 Second hot water pump (first pump, equipment)
29 Inverter (equipment)
32, 33 Chilled water pump (equipment)
34a Indoor heat exchanger 41 Cooling tower 41a Blower (equipment)
42 Cooling water pump (equipment)
46 Inverter (Inverter for blower, equipment)
47 Inverter (Inverter for cooling water pump, equipment)
50, 50A Control device 51, 51A Storage unit (storage means)
52, 52A Control unit (control means)
51a Hot water pump characteristic information (first pump characteristic information)
51b Refrigerator characteristic information 51c Cooling tower characteristic information 51d Heat recovery device characteristic information (heat recovery means characteristic information)
51e Power generation panel characteristic information 51g Detection value-frequency table (table)
24, 26, 35, 37, 43, 45, 62, 271, 272 Temperature sensor (detection means)
25, 36, 44, 273 Flow rate sensor (detection means)
61 Solar radiation sensor (detection means)
63 Humidity sensor (detection means)
q1, q2, q3, q4 piping (first circulation channel)
r1, r2 piping (cooling water circulation flow path)

Claims (8)

  1. A photovoltaic power generation unit comprising: a photovoltaic power generation panel that generates power by being irradiated with sunlight; and a heat recovery unit that is installed on at least one surface of the photovoltaic power generation panel and recovers solar heat using a heat medium. With
    An evaporator that cools the first refrigerant circulating through the first circulation flow path through the indoor heat exchanger with the latent heat of evaporation of the second refrigerant;
    An adsorber that adsorbs the second refrigerant evaporated in the evaporator with an adsorbent;
    A regenerator that regenerates the adsorbent by exchanging heat with the heat medium absorbed by the heat recovery means;
    An air-conditioning system comprising: an adsorption refrigerator having a condenser that cools and condenses the second refrigerant evaporated during the regeneration with cooling water.
  2. A photovoltaic power generation unit comprising: a photovoltaic power generation panel that generates power by being irradiated with sunlight; and a heat recovery unit that is installed on at least one surface of the photovoltaic power generation panel and recovers solar heat using a heat medium. With
    An evaporator that cools the first refrigerant circulating through the first circulation flow path through the indoor heat exchanger with the latent heat of evaporation of the second refrigerant;
    An absorber that absorbs the second refrigerant evaporated in the evaporator with an absorption liquid;
    A regenerator that regenerates the absorbent by exchanging heat with the heat medium that has absorbed heat by the heat recovery means;
    An air-conditioning system comprising: an absorption refrigerator having a condenser that cools and condenses the second refrigerant evaporated during the regeneration with cooling water.
  3. A first pump that pumps the heat medium recovered from solar heat by the heat recovery means toward the regenerator;
    The air conditioning system according to claim 1, further comprising: a first inverter that makes a frequency variable when the first pump is driven.
  4. A cooling tower having a blower for blowing outside air and cooling the cooling water that has absorbed heat from the second refrigerant;
    A cooling water pump that pumps the cooling water radiated by the cooling tower toward the condenser through a cooling water circulation passage disposed so as to pass through at least the condenser;
    The air conditioning system according to claim 1, further comprising: a cooling water pump inverter that varies a frequency when driving the cooling water pump.
  5. The air conditioning system according to claim 4, further comprising a blower inverter that varies a frequency when driving the blower.
  6. Control means for controlling a device including the first inverter so as to maximize the evaluation function calculated by subtracting the power consumption of the entire system from the generated power of the photovoltaic power generation panel. The air conditioning system according to claim 3.
  7. First pump characteristic information for identifying the power consumption of the first pump based on the frequency of the first inverter;
    Refrigerator characteristic information for specifying the power consumption of the refrigerator based on the temperature and flow rate of the heat medium flowing into the refrigerator, the temperature and flow rate of the cooling water flowing into the refrigerator, and the air conditioning load When,
    Heat recovery means characteristic information for specifying the amount of heat recovery of the heat recovery means based on the temperature and flow rate of the heat medium flowing into the heat recovery means;
    The surface temperature of the photovoltaic power generation panel is specified based on the heat recovery amount of the heat recovery means, the amount of solar radiation, and the outside air temperature, and the generated power of the photovoltaic power generation panel is determined based on the surface temperature and the amount of solar radiation. Power generation panel characteristic information to identify,
    Comprises storage means for storing at least
    The control means includes
    The amount of solar radiation detected by the detecting means, the outside air temperature humidity, the temperature and flow rate of the heat medium flowing into the refrigerator, the temperature and flow rate of the cooling water flowing into the refrigerator, and the 7. The evaluation function is calculated by executing a simulation based on the temperature and flow rate of the heat medium flowing into the heat recovery means and the respective characteristic information stored in the storage means. The air conditioning system described in.
  8. Storage means for storing the frequency of the first inverter that maximizes the evaluation function in advance as a table corresponding to the amount of sunlight irradiated to the photovoltaic power generation panel, the outside air temperature humidity, and the air conditioning load. Prepared,
    The control means includes
    The frequency of the first inverter corresponding to information including the amount of solar radiation detected by the solar radiation sensor, the temperature and humidity of the outside air detected by the temperature and humidity sensor, and the air conditioning load is acquired with reference to the table. The air conditioning system according to claim 6.
JP2013139803A 2013-07-03 2013-07-03 Air conditioning system Pending JP2015014379A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2013139803A JP2015014379A (en) 2013-07-03 2013-07-03 Air conditioning system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2013139803A JP2015014379A (en) 2013-07-03 2013-07-03 Air conditioning system

Publications (1)

Publication Number Publication Date
JP2015014379A true JP2015014379A (en) 2015-01-22

Family

ID=52436214

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2013139803A Pending JP2015014379A (en) 2013-07-03 2013-07-03 Air conditioning system

Country Status (1)

Country Link
JP (1) JP2015014379A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104596150A (en) * 2015-01-26 2015-05-06 云南师范大学 Adsorption type combined cooling heating and power system based on solar energy Stirling condensation
KR101787943B1 (en) * 2017-02-09 2017-10-19 주식회사 구성이엔드씨 Three way valve for independently controlling flow path, refrigeration apparatus of adsorption type comprising the same and refrigeration system of adsorption type

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5940745U (en) * 1982-09-08 1984-03-15
JP2002267276A (en) * 2001-03-12 2002-09-18 Takao Ishihara Solar cooling system
JP2004053127A (en) * 2002-07-19 2004-02-19 Hitachi Plant Eng & Constr Co Ltd Air conditioner and its control method
JP2008286162A (en) * 2007-05-21 2008-11-27 Nippon Telegr & Teleph Corp <Ntt> Energy system, cogeneration system, and solar battery module
JP2010190460A (en) * 2009-02-17 2010-09-02 Hitachi Plant Technologies Ltd Air conditioning system
JP2011185478A (en) * 2010-03-05 2011-09-22 Hitachi Plant Technologies Ltd Cooling system
JP2011208828A (en) * 2010-03-29 2011-10-20 Mitsubishi Chemical Engineering Corp Air conditioning system using steam adsorbent

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5940745U (en) * 1982-09-08 1984-03-15
JP2002267276A (en) * 2001-03-12 2002-09-18 Takao Ishihara Solar cooling system
JP2004053127A (en) * 2002-07-19 2004-02-19 Hitachi Plant Eng & Constr Co Ltd Air conditioner and its control method
JP2008286162A (en) * 2007-05-21 2008-11-27 Nippon Telegr & Teleph Corp <Ntt> Energy system, cogeneration system, and solar battery module
JP2010190460A (en) * 2009-02-17 2010-09-02 Hitachi Plant Technologies Ltd Air conditioning system
JP2011185478A (en) * 2010-03-05 2011-09-22 Hitachi Plant Technologies Ltd Cooling system
JP2011208828A (en) * 2010-03-29 2011-10-20 Mitsubishi Chemical Engineering Corp Air conditioning system using steam adsorbent

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104596150A (en) * 2015-01-26 2015-05-06 云南师范大学 Adsorption type combined cooling heating and power system based on solar energy Stirling condensation
KR101787943B1 (en) * 2017-02-09 2017-10-19 주식회사 구성이엔드씨 Three way valve for independently controlling flow path, refrigeration apparatus of adsorption type comprising the same and refrigeration system of adsorption type
WO2018147569A1 (en) * 2017-02-09 2018-08-16 주식회사 구성이엔드씨 Tridirectional valve for independently controlling passages, and adsorption-type freezing device and adsorption-type freezing system comprising same
CN108413643A (en) * 2017-02-09 2018-08-17 九星E&C For the triple valve of independent control flow path including its adsorption refrigerating device and adsorption refrigeration system

Similar Documents

Publication Publication Date Title
ES2683855T3 (en) Desiccant air conditioning system
CA2901483C (en) Control system and method for a liquid desiccant air delivery system
JP2019215156A (en) Method and system for mini-split liquid desiccant air conditioning
CN104169112B (en) Refrigerating circulatory device
US8943844B2 (en) Desiccant-based air conditioning system
CN102840717B (en) Heat energy recovery device
Ma et al. Performance analysis on a hybrid air-conditioning system of a green building
US8268060B2 (en) Dehumidifier system
JP4089187B2 (en) Thermoelectric supply system
JP3624910B2 (en) Humidity control device
US5966955A (en) Heat pump device and desiccant assisted air conditioning system
JP3864982B2 (en) Air conditioning system
EP1734317B1 (en) Cogeneration system
Buker et al. Recent developments in solar assisted liquid desiccant evaporative cooling technology—A review
JP2012201360A (en) Heat pump system for vehicle and control method thereof
JP4952867B2 (en) Hot water storage hot water system and its operation method
US8646284B2 (en) Heat-source system and method for controlling the same
KR101681601B1 (en) Carbon dioxide supply device
FI119705B (en) Phase change heat exchanger
Fong et al. Comparative study of solar cooling systems with building-integrated solar collectors for use in sub-tropical regions like Hong Kong
US10356949B2 (en) Server rack heat sink system with combination of liquid cooling device and auxiliary heat sink device
US7810339B2 (en) Air conditioner and method of controlling air conditioner
CN102914011A (en) Heat recovery air-conditioning machine set
KR20120121776A (en) Hybrid type cooling equipment
JP2011092163A (en) Air-conditioning system for greenhouse and method for operating the same

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20160216

RD02 Notification of acceptance of power of attorney

Free format text: JAPANESE INTERMEDIATE CODE: A7422

Effective date: 20160715

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20170228

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20170321

A02 Decision of refusal

Free format text: JAPANESE INTERMEDIATE CODE: A02

Effective date: 20171003