JP4196587B2 - Water refrigerant evaporative natural circulation cooling system with water vapor compression refrigerator - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention uses, for example, a heat exchange means such as a radiant panel for air conditioning of a building, radiantly cools with cold water from a steam compression refrigeration machine, operates the steam compression refrigeration machine with high efficiency, and cools cold water as a refrigerant. It relates to the technology of natural circulation by vaporization.
[0002]
[Prior art]
Conventionally, a pump-type circulation cooling system using this type of steam compression refrigerator has a configuration as shown in FIG. 3, for example. To explain this, reference numeral 1 denotes a steam compression refrigerator, which includes an evaporator 1a, a compressor 1b, and a condenser 1c. The evaporator 1a is provided with a forward pipe 2 and a return pipe 3. A pump 4 is interposed in the forward pipe 2 to circulate the chilled water in the forward pipe 2 and the return pipe 3, thereby cooling a building or the like. Is fulfilling. The evaporator 1a introduces the makeup water 5 and evaporates a part of the circulating cold water while maintaining the low pressure by the operation of the compressor 1b.
The condenser 1c introduces water vapor that has been pressurized by the compressor 1b to a high temperature, and cools and condenses it with cooling water 7 introduced from a cooling tower 6 installed outside through a pump 9. In the figure, 8 is a vacuum pump for discharging a part of the air contained in the water vapor and water in the condenser 1c, and 10 is a flow of cooling water from the condenser 1c to the cold water tower 6. It is a pump to do.
[0003]
Further, to explain other conventional techniques, the conventional technique is provided with a heat storage tank as a cold heat source at a high place such as outdoors or outdoors, and is used as an indoor unit in each air-conditioned room or air-conditioned area. Air conditioners are installed. And the said thermal storage tank and the said air conditioner are connected by the gravity-type heat pipe, and this gravity-type heat pipe uses refrigerant | coolants, such as Freon, By utilizing the phase change and gravity of this refrigerant | coolant. The refrigerant flows between the air conditioner in the air-conditioned room and the cold heat source to move cold.
In the prior art, during the cooling operation, the heat load in the air-conditioned room is changed from the liquid phase to the gas phase by the heat exchanger in the air conditioner, and the refrigerant is raised in the gravity heat pipe to cool the heat. It reaches the source heat storage tank. The gas-phase refrigerant is cooled and condensed in the heat storage tank, and the liquid-phase refrigerant descends through the gravity heat pipe by gravity and returns to the air conditioner.
[0004]
[Problems to be solved by the invention]
Since the conventional technology has the above configuration, the following problems existed.
(1) According to the former, since the cooling system is equipped with a pump 4 and the like, and the circulating cold water is sent to the outgoing pipe 2 and the return pipe 3 by this function, the number of man-hours for installing the pump 4 and the pump 4 etc. As well as installation costs, control switches for driving the pump, transport power or electrical energy are required, and the cooling system becomes large-scale, which increases the installation man-hours, facility costs, and running costs of the entire cooling system. It was.
(2) According to the latter, since refrigerants such as chlorofluorocarbons are used, there is a possibility of leakage phenomenon and refrigerant filling based on them is required. If this is released to the atmosphere, it is decomposed into ultraviolet rays in the stratosphere. There was a harmful effect of generating chlorine atoms and destroying the ozone layer by a chain reaction and promoting global warming.
And since the conventional technology uses a refrigerant such as chlorofluorocarbon, indirect heat exchange occurs and the cold water produced by the evaporator cannot be used directly, and the efficiency of the refrigerator is reduced. It was.
[0005]
[Means for Solving the Problems]
The present invention uses heat exchanging means for air conditioning of a building, and after the chilled water is vaporized and radiated in the heat exchanging means, the vaporized water vapor is flowed through a steam pipe to naturally circulate the cold water. It is intended to provide a system for operating a steam compression refrigerator with high efficiency, and is composed of the following configurations and means.
[0006]
According to the first aspect of the present invention, a steam compression refrigerator composed of an evaporator that guides steam, a compressor, and a condenser that takes in makeup water, and cooling that guides cooling water to the condenser of the steam compression refrigerator In an apparatus consisting of a tower, a ball tap type liquid level controller and heat exchange means are installed on each floor of the building, and a steam pipe consisting of a vertical pipe is connected to the evaporator from the bottom floor to the top floor of the building. the cold water pipe is connected respectively to the vessel, the water coolant, characterized in that the the ball tap method liquid level controller in the liquid phase to said heat exchange means and the ball tap system liquid level controller in the gas phase were connected to the steam pipe It is a vaporization natural circulation cooling system.
[0007]
According to the invention described in claim 2, a steam compression refrigerator comprising an evaporator for introducing steam, a compressor, a heat exchanger and a condenser incorporating makeup water, and a condenser of the steam compression refrigerator In the apparatus comprising a cooling tower for introducing cooling water to the building, a ball tap type liquid level controller and a heat exchange means are installed on each floor of the building , and a vertical pipe is connected to the evaporator from the bottom floor to the top floor of the building. The water vapor pipe is connected to the condenser and the cold water pipe is connected, the liquid phase in the ball tap type liquid level controller is connected to the heat exchange means, and the gas phase in the ball tap type liquid level controller is connected to the water vapor pipe. It is a water refrigerant vaporization natural circulation cooling system characterized by the above.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an embodiment of a water refrigerant vaporization natural circulation cooling system using a water vapor compression refrigerator according to the present invention will be described in detail with reference to the accompanying drawings.
[0009]
DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiment 1
FIG. 1 is a configuration layout diagram showing an example of Embodiment 1 of a water refrigerant vaporization natural circulation cooling system using a steam compression refrigerator according to the present invention.
A steam compression refrigerator 9 includes an evaporator 9a, a compressor 9b, and a condenser 9c. The evaporator 9a guides the cold water 11a and the water vapor 11b into which the makeup water 10 is taken, and evaporates a part of the cold water 11a while maintaining a low pressure by the operation of the compressor 9b. The compressor 9b pressurizes the water vapor introduced from the evaporator 9a under predetermined conditions. The condenser 9c introduces water vapor that has been pressurized by the compressor 9b and has reached a high temperature, and cools and condenses it with the cooling water 13 introduced from the cooling tower 12 installed outside. A vacuum pump 9d discharges a part of the air contained in the water vapor and water accumulated in the condenser 9c.
In the figure, reference numerals 13a and 13b denote cooling water pumps, respectively, which feed the cooling water 13 from the cooling tower 12 to the condenser 9c.
[0010]
The makeup water 10 may be various types of water such as seawater, river water, sewage treated water, wastewater treated water, industrial water or tap water.
[0011]
The cooling tower 12 is an incidental facility for the water vapor compression refrigerator 9, and the cooling water 13 guided from the condenser 9c is fed by a cooling water pump 13a. And the cooling tower 12 introduces the cooling water 13 into the condenser 9c by the cooling water pump 13b. Further, the cooling tower 12 has a function of releasing heat of the cooling water 13 whose temperature has been increased by condensing water vapor in the condenser 9c.
[0012]
Reference numeral 14 denotes a cold water pipe, in which a cold water 11a is flowed from the evaporator 9a, and a cooling water level control means 17 and a cooling radiation panel as a heat exchange means 15 installed at each level of the building are provided. Intervene. One end of the cold water pipe 14 is connected to the evaporator 9 a located above the cold water pipe 14, and the other end is connected to the water vapor pipe 16. The heat exchange means 15 may be constituted by a heat exchange coil or a general-purpose heat exchanger. The water vapor pipe 16 is connected to the cold water pipe 14 or the heat exchange means 15, and the upper end thereof is connected to the evaporator 9 a located above the water vapor pipe 16.
The cold water liquid level control means 17 is composed of, for example, a ball tap type liquid level controller, and the ball tap type liquid level controller is connected to the heat exchange means 15 in the liquid phase and the steam pipe 16 is in the gas phase. It is connected to.
[0013]
The cold water pipe 14 is continuously suspended from the top floor to the bottom floor or the basement of the building, and the steam pipe 16 is connected to the bottom floor of the building via the cold water liquid level control means 17 and the heat exchange means 15. It is erected as a vertical pipe up to the top floor. The cold water level control means 17 and the heat exchange means 15 are also installed on each floor of the building. Reference numeral 18 denotes a plurality or a single throttle mechanism provided in the heat exchanging means 15, and the flow rate of the water vapor steam pipe 16 is operated by the throttle mechanism 18 comprising a regulating valve or the like. By doing.
In the drawing, reference numeral 19 denotes a drain valve installed at the lowermost part of the cold water pipe 14 and has a function of partially discharging the cold water 11a in the cold water pipe 14.
[0014]
Next, operation | movement of Embodiment 1 of the water refrigerant natural circulation cooling system by the water vapor | steam compression refrigerator which concerns on this invention is demonstrated.
[0015]
When the compressor 9b of the steam compression refrigerator 9 is operated, the evaporator 9a causes the cold water 11a to flow to the cold water pipe 14. Here, if a radiant panel is used as the heat exchange means 15 to cool the air-conditioned rooms on each floor of the building, the water temperature of the cold water 11a from the evaporator 9a is set to about 18 ° C., for example, and the cold water 11a and the condenser 9c are cooled. By reducing the water temperature difference of the water 13, the steam compression refrigerator 9 can be operated with high efficiency. According to a trial calculation, when the outlet cooling water temperature of the steam compression refrigerator 9 is 34 ° C., the coefficient of performance of the single unit of the steam compression refrigerator 9 is about 8 to 10 from the water temperature 18 ° C. of the cold water 11a. In the system of the present invention, the cold water 11a sent to the cooling radiation panel as the heat exchange means 15 is cooled in the evaporator 9a of the steam compression refrigerator 9, and the cold water 11a is used for cooling.
[0016]
Then, when the cold water 11a flows through the cold water pipe 14 and the cold water 11a is introduced into the cooling radiation panel as the heat exchanging means 15, the cold water liquid level control means 17 causes the inside of the cooling radiation panel. By adjusting the water level, the cold water introduced into the cooling radiation panel evaporates in the cooling radiation panel, so that the heat of vaporization is taken away from the cold water 11a, and the cooling water 11a is cooled to perform the radiation cooling. Will be.
It should be noted that various distributors may be used in place of the cold water liquid level control means 17 and the water level may be adjusted by changing the mounting position thereof, and further provided with a control valve and a water pressure adjusting mechanism. The water level in the radiation panel can be adjusted.
[0017]
Further, the cold water 11a that has naturally flowed down by gravity to the cooling radiation panel as the heat exchange means 15 is radiantly cooled and vaporized and dissipated to become steam, and this steam naturally rises, and the steam compression refrigerator through the steam pipe 16 9 is returned to the evaporator 9a in the inside 9, and the natural circulation action of the cold water 11a is performed.
[0018]
Second Embodiment of the Invention
FIG. 2 is a structural layout diagram showing an example of a second embodiment of the water refrigerant natural circulation cooling system using the steam compression refrigerator according to the present invention.
A steam compression refrigerator 9 includes an evaporator 9a, a compressor 9b, and a condenser 9c. The evaporator 9a guides the cold water 11a containing the makeup water 10 and evaporates a part of the cold water 11a while maintaining a low pressure by the operation of the compressor 9b. The compressor 9b pressurizes the water vapor introduced from the evaporator 9a under predetermined conditions. The condenser 9c introduces water vapor that has been pressurized by the compressor 9b and has reached a high temperature, and cools and condenses it with the cooling water 13 introduced from the cooling tower 12 installed outside. A vacuum pump 9d discharges a part of the air contained in the water vapor and water accumulated in the condenser 9c.
[0019]
Here, reference numeral 20 denotes a heat exchanger interposed between the steam compression refrigerator 9 and the cooling tower 12, and circulates and flows the cooling water pump 13d from the cooling tower 12 while performing heat exchange. Based on the above, the cooling water 13 is sent to the condenser 9c by the cooling water pump 13c.
The makeup water 10 may be various types of water such as seawater, river water, sewage treated water, wastewater treated water, industrial water or tap water.
[0020]
The cooling tower 12 is incidental to the steam compression refrigerator 9 and circulates the cooling water 13 fed from the condenser 9c by the cooling water pump 13c by the cooling water pump 13d through the heat exchanger 20. Cooling. Further, the cooling tower 12 has a function of releasing heat of the cooling water 13 whose temperature has been increased by condensing water vapor in the condenser 9c.
[0021]
Reference numeral 14 denotes a cold water pipe, in which a cold water 11a is flowed from the evaporator 9a, and a cooling water level control means 17 and a cooling radiation panel as a heat exchange means 15 installed at each level of the building are provided. Intervene. One end of the cold water pipe 14 is connected to the evaporator 9 a located above the cold water pipe 14, and the other end is connected to the water vapor pipe 16. The heat exchange means 15 may be constituted by a heat exchange coil or a general-purpose heat exchanger. The steam pipe 16 is connected to the cold water pipe 14 or the heat exchanging means 15, and its upper end is connected to the input side of the evaporator 9 a located above the steam pipe 16.
[0022]
The cold water pipe 14 is continuously suspended from the top floor to the bottom floor or the basement of the building, and the steam pipe 16 is connected to the bottom floor of the building via the cold water liquid level control means 17 and the heat exchange means 15. It is erected as a vertical pipe up to the top floor. The cold water level control means 17 and the heat exchange means 15 are also installed on each floor of the building. Reference numeral 18 denotes a plurality of or a single throttle mechanism, which is provided with the heat exchanging means 15 and operates the throttle mechanism 18 comprising a regulating valve or the like for the flow rate of the steam pipe 16 for steam. To do.
In addition, since the other structure of Embodiment 2 which concerns on this invention is substantially the same as Embodiment 1 which concerns on the said this invention, the description is abbreviate | omitted.
[0023]
The operation of the second embodiment of the water refrigerant vaporization natural circulation cooling system using the steam compression refrigerator according to the present invention is substantially the same as that of the first embodiment of the present invention. Is omitted.
[0024]
The second embodiment according to the present invention is an embodiment in which the heat exchanger 20 is installed in the configuration of the first embodiment according to the present invention. According to the second embodiment, a closed circuit of the compressor 9b, the condenser 9c and the evaporator 9a is formed from the evaporator 9a, and the steam evaporated by the evaporator 9a of the steam compression refrigerator 9 is compressed. It is sent to the condenser 9c via the machine 9b. Then, the water condensed by the condenser 9c is sent to the evaporator 9a.
[0025]
According to Embodiment 2 of the present invention, a certain amount of water vapor or water is discharged from the condenser 9c through the vacuum pump 9d. Therefore, the evaporator 9a is replenished with the makeup water 10. The replenishing water 10 contains minerals, and the operation of the vacuum pump 9d concentrates the minerals in the system according to the present invention. As described above, compared to the configuration in which all the water evaporated in the evaporator 9a is discharged from the condenser 9c, the concentration rate of the mineral is slow, and the quality of the cold water is improved and the water quality is easily managed. The operation becomes.
[0026]
【The invention's effect】
The water refrigerant vaporization natural circulation cooling system using the steam compression refrigerator according to the present invention has the following effects because it has the above-described configuration and operation.
[0027]
According to the first aspect of the present invention, a steam compression refrigerator composed of an evaporator that guides steam, a compressor, and a condenser that takes in makeup water, and cooling that guides cooling water to the condenser of the steam compression refrigerator In an apparatus consisting of a tower, a ball tap type liquid level controller and heat exchange means are installed on each floor of the building, and a steam pipe consisting of a vertical pipe is connected to the evaporator from the bottom floor to the top floor of the building. the cold water pipe is connected respectively to the vessel, the water coolant, characterized in that the the ball tap method liquid level controller in the liquid phase to said heat exchange means and the ball tap system liquid level controller in the gas phase were connected to the steam pipe A vaporized natural circulation cooling system is provided.
With this configuration, when using a steam compression refrigerator and further cooling the air-conditioned room on each floor of the building, etc., a ball tap type liquid level controller is interposed in the path of the chilled water pipe from the condenser. In addition, the water head pressure of each floor is easily maintained regardless of the heat exchanging means, and the water level is easily maintained stably. Moreover, only the amount of cold water corresponding to the evaporation amount of each heat exchanging means can be replenished, and about 18 The water vapor compression refrigerator can be operated with high efficiency by cold water of about 0 ° C., and there is an effect of allowing natural water to circulate by incorporating cold water as a refrigerant into the water vapor pipe without using a pump. In addition, as in the system of the present invention, the facility cost and installation space for constructing a system using a natural circulation system of refrigerant water are greatly reduced, and the scale can be reduced. There is an effect that it is possible to reduce the running cost in the operation of this system.
[0028]
According to the invention described in claim 2, a steam compression refrigerator comprising an evaporator for introducing steam, a compressor, a heat exchanger and a condenser incorporating makeup water, and a condenser of the steam compression refrigerator In the apparatus comprising a cooling tower for introducing cooling water to the building, a ball tap type liquid level controller and a heat exchange means are installed on each floor of the building , and a vertical pipe is connected to the evaporator from the bottom floor to the top floor of the building. The water vapor pipe is connected to the condenser and the cold water pipe is connected, the liquid phase in the ball tap type liquid level controller is connected to the heat exchange means, and the gas phase in the ball tap type liquid level controller is connected to the water vapor pipe. A water refrigerant vaporization natural circulation cooling system is provided.
Since such a configuration is adopted, in addition to the effect of the first aspect described above, a heat exchanger is interposed between the steam compression refrigerator and the cooling tower, and the refrigeration cycle and the load side piping are sealed. Constructed in a state, there is an effect that the quality of the circulating cold water can be kept high.
[Brief description of the drawings]
FIG. 1 is a configuration layout diagram showing an example of Embodiment 1 of a water refrigerant vaporization natural circulation cooling system using a steam compression refrigerator according to the present invention.
FIG. 2 is a configuration layout diagram showing an example of a second embodiment of a water refrigerant vaporization natural circulation cooling system using a steam compression refrigerator according to the present invention.
FIG. 3 is a configuration layout diagram of a pump-type circulation cooling system using a steam compression refrigerator in the prior art.
[Explanation of symbols]
9 steam compression refrigerator 9a evaporator 9b compressor 9c condenser 9d vacuum pump 10 makeup water 11a cold water 11b steam 12 cooling tower 13 cooling water 13a cooling water pump 13b cooling water pump 13c cooling water pump 13d cooling water pump 14 cooling water pipe 15 Heat exchange means 16 Steam pipe 17 Cold water level control means 18 Throttle mechanism 19 Drain valve 20 Heat exchanger

Claims (2)

In an apparatus comprising: an evaporator for introducing water vapor; a compressor; a water vapor compression refrigerator comprising a condenser incorporating makeup water; and a cooling tower for introducing cooling water to the condenser of the water vapor compression refrigerator. A ball tap type liquid level controller and heat exchange means are installed on each floor of the building, and a steam pipe consisting of a vertical pipe is connected to the evaporator from the bottom floor to the top floor of the building , and a cold water pipe is connected to the condenser, respectively. A water refrigerant vaporization natural circulation cooling system, characterized in that the liquid phase in the system level controller is connected to the heat exchange means, and the gas phase in the ball tap system level controller is connected to a steam pipe. A steam compression refrigerator that includes an evaporator for introducing water vapor, a compressor, a heat exchanger, and a condenser that takes in makeup water, and a cooling tower that guides cooling water to the condenser of the water vapor compression refrigerator in a combination, cold water pipe steam pipe made of vertical tubes to the evaporator at the top floor from the lowest floor of該建thereof with installing the ball tap method liquid level controller and a heat exchange means in each floor of the building to the condenser Are connected to each other, the liquid phase in the ball tap type liquid level controller is connected to the heat exchanging means, and the gas phase in the ball tap type liquid level controller is connected to a water vapor pipe. system.

Images