JP3220554B2 - Ice water transfer device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to air conditioning for buildings and the like,
The present invention relates to an ice water transfer device used for food production and processing that is cooled and refrigerated at ice temperature.

[0002]

2. Description of the Related Art FIG. 13 is a block diagram showing a conventional ice water conveying apparatus disclosed in, for example, Japanese Patent Application Laid-Open No. 4-68240. In the drawing, reference numeral 1 denotes ice water generated by freezing a part of water or an aqueous solution. Reference numeral 2 denotes a heat storage tank for storing ice water 1 frozen.

[0003] Further, 3 is a heat exchanger for cooling or freezing using the ice water 1, 4 is a pump for conveying the ice water 1 to the heat exchanger 3, 5 is a concentration measuring means for measuring the concentration of water, Reference numeral 6 denotes a density adjusting means for adjusting the density.

Further, in the density measuring means 5,
0 is a sample extraction tube for extracting a part of the ice water 1 as a sample fluid, 71 is a heater as heating means for heating the sample fluid extracted from the sample extraction tube 70,
Reference numerals 72 and 73 denote thermometers as temperature measuring means for measuring the temperature of the sample fluid on the input and output sides of the heater 71.

[0005] Further, reference numeral 74 denotes a flow meter as a flow rate measuring means for measuring the flow rate of the sample fluid, and 75 denotes a heating calorie of the heating means required to heat the sample fluid to a set temperature at which the sample fluid does not contain ice. It is a calorific value calculating means. Reference numeral 76 denotes a concentration calculating means for calculating the concentration of the ice water 1 in the pipe.

Next, the operation will be described. First, the ice water 1 in the heat storage tank 2 is supplied to the heat exchanger 3 by the pump 4, and cools, freezes, or air-conditions the article by the cold heat of the ice water 1.

At this time, a part of the ice water 1 supplied by the pump 4 is supplied to the heater 71 through the sample extraction tube 70, and is heated to a state where the water 1 does not contain the ice water 1. Based on the calorific value data, the temperature of the input / output unit of the heater 71, and the flow rate of the melted water, the concentration calculating means 76 calculates the concentration of the ice water.

[0008] The concentration adjusting means 6 automatically adjusts the concentration of ice water sent from the heat storage tank 2 by the pump 4 in accordance with the above calculation result.

[0009]

Since the conventional ice water conveying apparatus is configured as described above, when the concentration measuring means 5 measures the concentration of the ice water 1 using the ice water 1 taken out of the pipe, Depending on the connection method and the connection location between the sample extraction tube 70 and the pipe, a large error occurs between the concentration of the ice water 1 taken out of the sample extraction tube 70 and the concentration of the ice water in the pipe, and the appropriate concentration of the ice water 1 is heated. It cannot be conveyed to the exchanger 3, which causes a problem that the conveyance power is increased.

Further, since the ice water 1 taken out of the sample extraction tube 70 must be heated to a state that does not contain ice by using the heater 71, when the concentration of the ice water 1 in the pipe changes, the change is not affected. It takes a long time to respond, and when a large amount of ice is conveyed to the heat exchanger 3, there is a problem that the ice water 1 becomes difficult to flow or blockage occurs.

SUMMARY OF THE INVENTION It is an object of the present invention to solve the above-mentioned problems by providing a concentration measuring means capable of accurately measuring the concentration of ice water in a pipe and having excellent responsiveness. Accordingly, it is an object of the present invention to provide an ice water transport device that can supply ice water of an appropriate concentration to a heat exchanger, can efficiently perform cooling and freezing, and can avoid clogging in piping or the like due to ice.

Another object of the present invention is to provide an ice water transport device capable of accurately measuring the concentration of ice water in a pipe by a differential pressure gauge and supplying ice water of an appropriate concentration to a heat exchanger according to the measurement result. .

A third object of the present invention is to provide an ice water transfer device capable of correcting a zero point of a differential pressure gauge and preparing for accurate differential pressure calculation.

A fourth object of the present invention is to provide an ice water transfer device capable of obtaining a differential pressure in accordance with a result measured by a flow meter and supplying ice water having an appropriate concentration to the heat exchanger based on the pressure difference.

A fifth object of the present invention is to provide an ice water transfer device which can correct a zero point of a flow meter and can prepare for accurate differential pressure calculation.

[0016]

According to a first aspect of the present invention, there is provided an ice water conveying apparatus comprising: a concentration pipe for supplying ice water in an ascending direction; continuously rising to measure the downcomer supplying the ice water in the down direction, the differential pressure between upstream and downstream of its <br/> respectively in the same height difference in the riser and downcomer A pipe differential pressure measuring means and a descending pipe differential pressure measuring means,
On the basis of the differential pressures measured by the rising pipe differential pressure measuring means and the descending pipe differential pressure measuring means, the concentration calculating means calculates the concentration of the ice water, and the calculation result is input to the concentration adjusting means. It was made.

An ice water conveying apparatus according to a second aspect of the present invention is an ice water conveying apparatus comprising: an upper and lower connecting device provided with riser pipe differential pressure measuring means and descending pipe differential pressure measuring means at predetermined intervals in each of the riser pipe and the descending pipe; And a differential pressure gauge for measuring a differential pressure between the upper and lower connecting devices, wherein the upper and lower connecting devices and the differential pressure gauge are connected by a connecting pipe.

According to a third aspect of the present invention, there is provided an ice water conveying device, wherein a bypass path for bypassing the differential pressure gauge is connected to the connecting pipe.
An on-off valve for correcting the differential pressure gauge zero point is provided in the middle of the bypass passage.

According to a fourth aspect of the present invention, there is provided an ice water transfer device comprising: a flow meter provided in a bypass passage for bypassing a part of the ice water flowing through an ascending pipe and a descending pipe; and a flow rate of the ice water measured by the flow meter. , identical with the riser and downcomer
A differential pressure calculating means for calculating a differential pressure between the upstream side and the downstream side in the height difference, from a calculation result by the differential pressure calculating means, a concentration calculating means to calculate the concentration of the ice water, The calculation result is input to the density adjusting means.

According to a fifth aspect of the present invention, there is provided an ice water conveying apparatus comprising: a flow meter provided in a bypass passage for bypassing a part of the ice water flowing through a rising pipe and a descending pipe; and a flow rate of the ice water measured by the flow meter. , identical with the riser and downcomer
A differential pressure calculating means for calculating the differential pressure between the upstream side and the downstream side in the height difference; and calculating the concentration of the ice water from the calculation result by the differential pressure calculating means, and inputting the calculation result to the concentration adjusting means. And an on-off valve for correcting the flow meter zero point is provided in the middle of the bypass.

[0021]

According to the first aspect of the present invention, the ice water conveying device accurately measures the ice concentration in the pipe from the pressure difference between the riser pipe and the downcomer pipe, and according to the measurement result, the ice water having an appropriate concentration is adjusted by the concentration adjusting means. It is supplied to a heat exchanger so that cooling and freezing can be performed efficiently.

In the second aspect of the present invention,
Accurately measure the differential pressure between the riser pipe and the downcomer pipe with a differential pressure gauge connected between the connecting devices, and even when the concentration of ice in the pipe changes, measure the change in the differential pressure according to the change. In a short time, the concentration of ice water in the pipe is accurately calculated by the concentration calculating means, and the concentration of ice water can be adjusted quickly and quickly based on the calculation result.
Be able to do it accurately.

According to the third aspect of the present invention, there is provided an ice water transport device.
By the on-off valve connected in parallel with the differential pressure gauge, each zero point of the differential pressure gauge that measures the differential pressure of the riser pipe and the differential pressure gauge that measures the differential pressure of the descending pipe can be corrected. Measurement.

According to a fourth aspect of the present invention, there is provided an ice water conveying device,
By measuring the flow rate of water flowing through the bypass connected to the riser and the flow rate of water flowing through the bypass connected to the downcomer with each flow meter, the differential pressure between the riser and the downcomer is calculated as a differential pressure calculating means. Even if the concentration of ice in the pipe changes, the change in the flow rate according to the change is measured with the above flow meter, and within a sufficiently short time, the riser and the lower pipe in the pipe are measured. The concentration of ice water is accurately calculated by the concentration calculating means.

According to a fifth aspect of the present invention, there is provided an ice water conveying device,
The on-off valve placed in series with the flow meter sets the zero point between the flow meter that measures the flow rate of water flowing through the bypass connected to the riser pipe and the flow meter that measures the flow rate of water flowing through the bypass connected to the down pipe. Correction is possible, thereby enabling high-precision measurement of the flow rate thereafter.

[0026]

[Embodiment 1] Hereinafter, embodiments of the first and second aspects of the present invention will be described with reference to the drawings. In Figure 1, 1 ice water that is generated by freezing a portion of water or an aqueous solution, 2 is a heat storage tank for storing ice water 1.

3 is a heat exchanger for cooling or freezing using the ice water 1; 4 is a pump for conveying the ice water 1 to the heat exchanger 3; 5 is a concentration measuring means for measuring the concentration of ice water; Reference numeral 6 denotes a density adjusting means for adjusting the density.

Further, 10 is a riser, 11 is two connecting devices provided on the riser 10 at a predetermined interval, 12 is a differential pressure gauge for measuring a differential pressure between the respective connecting devices 11 provided on the riser 10, Reference numeral 13 denotes a connecting pipe connecting each connecting device 11 and the differential pressure gauge 12. In addition, riser pipe 10, connecting device 11, differential pressure gauge 1
2 and the connecting pipe 13 constitute riser pipe differential pressure measuring means P;
Downcomer 14, connecting device 15, differential pressure gauge 16, and connecting tube 1
Reference numeral 7 denotes a downcomer differential pressure measuring means Q.

14 is a downcomer, 15 is a connecting device provided on the downcomer 14 at predetermined intervals, 16 is a differential pressure gauge for measuring a differential pressure between the connecting devices 15 provided on the downcomer 14, and 17 is each connection This is a connecting pipe for connecting the device 15 and the differential pressure gauge 16.

Reference numeral 18 denotes a concentration calculating means for calculating the concentration of ice water in the pipe from the differential pressure between the connecting devices 11 measured by the differential pressure gauge 12 and the differential pressure between the connecting devices 15 measured by the differential pressure gauge 16. It is.

Next, the operation will be described. In this embodiment, the concentration of the circulating ice is mainly calculated by the concentration calculating means 18 and based on the calculated value, the concentration of the ice water conveyed to the heat exchanger 3 is adjusted to a predetermined concentration. To adjust.

That is, the ice water sent to the ascending pipe 10 and the descending pipe 14 by the pump 4 flows into the connecting pipes 13 and 17, respectively, and is based on the outputs of the differential pressure gauges 12 and 16 provided in the connecting pipes 13 and 17, respectively. And the density calculating means 18
Calculates the concentration of ice water flowing through the pipe.

Then, according to the calculation result by the concentration calculating means 18, the concentration adjusting means 6 operates to automatically adjust the concentration of the ice water 1 sent from the heat storage tank 2 to the pipe by the pump 4.

Next, a method of calculating the concentration by the concentration calculating means 18 will be described.
u, the differential pressure Pd of the downcomer 14, the gravitational acceleration g, the height difference H between the connecting devices, the density ρw of the water or the aqueous solution, and the density ρ of the ice
Using i, α = ｛(Pu−Pd) / (2 · g · H) −
ρw｝ / (ρi-ρw).

Accordingly, first, the differential pressure Pu of the ascending pipe 10 and the differential pressure Pd of the descending pipe 11 measured by the differential pressure gauge 12 and the differential pressure gauge 16 provided as differential pressure measuring means provided on the riser pipe 10 and the descender pipe 14.
Is output to the density calculating means 18.

The concentration calculating means 18 calculates the differential pressure P of the riser 10.
u, the differential pressure Pd of the downcomer 14 or the density ρw of the aqueous solution and the density ρi of ice are substituted into the above equation together with the gravitational acceleration g,
Calculate the ice concentration.

In the above embodiment, the case where the pump 4 is provided between the concentration adjusting means 6 and the concentration measuring means 5 has been described. The same effect as in the above embodiment can be obtained even when provided between the containers 3.

Further, in the above-described embodiment, the apparatus in which the downstream connection device 11 provided in the riser pipe 10 and the upstream connection device 15 provided in the downcomer pipe 14 are connected by a pipe has been described. 2, the connecting device 11 and the connecting device 1
The same effect as in the above embodiment can be obtained even with a device in which 5 is continuous.

Further, in the embodiment, the downstream connection device 11 provided on the riser pipe 10 and the upstream connection device 15 provided on the downcomer pipe 14 are separately provided. However, as shown in FIG. , The same connection device 25 may be shared.
The same effects as in the above embodiment can be obtained.

In the above embodiment, the ice water 1 is supplied to the riser 1
Although the device which flows in the order of 0 and the downcomer 14 has been described,
As shown in FIG. 4, the flow may be performed in the order of the downcomer pipe 14 and the ascending pipe 10, and the same effect as in the above embodiment can be obtained.

In the above embodiment, two differential pressure gauges 12 and
Although the apparatus using 16 has been described, as shown in FIG. 5, the differential pressure measuring means is connected to the riser pipe 10 via the connection device 11 and the connection pipe 13 is connected to the downcomer pipe 14 via the connection device 15. Connecting pipes 17 and connecting pipes 13 and 17
And a three-way valve 20 for connecting the differential pressure gauge 21
The apparatus may be constituted by a connecting pipe 22 for connecting the differential pressure gauge 21 and the same effect as in the above embodiment can be obtained.

As shown in FIG. 6, the downstream connection device provided with each differential pressure measuring means in the riser tube 10 and the upstream connection device provided in the downcomer tube 14 are the same connection device 25.
Moreover, the connecting pipe 13 connected to the riser pipe 10 via the connecting device 11 and the connecting pipe 17 connected to the descending pipe 14 via the connecting device 15 are connected to the three-way valve 20, and the differential pressure gauge 21 is connected to the connecting pipe 22. The connection between the connection device 25 and the three-way valve 20 may be made via the connection device, and the same effects as those of the above embodiment can be obtained.

Further, in the above embodiment, when the riser pipe 10 and the downcomer pipe 14 are filled only with water, the differential pressure gauge 21 is corrected, so that the differential pressure can be measured with high accuracy.

Embodiment 2 FIG. FIG. 7 shows an apparatus capable of correcting the zero point of the differential pressure gauge 21 of the above embodiment. 30 is a differential pressure gauge 2
1 is a bypass which bypasses 1;
Reference numeral 32 denotes an on-off valve provided in the middle of the connecting pipe.

In the apparatus configured as described above, when measuring the concentration of ice water in the pipe, the on-off valve 31 is closed and the differential pressure gauge 2 is closed.
When correcting the zero point of 1, by opening the on-off valve 31, the zero point of the differential pressure gauge 21 can be corrected, and the differential pressure can be measured with high accuracy.

Embodiment 3 FIG. FIG. 8 is a block diagram showing an ice water conveying apparatus according to the fourth aspect of the present invention. In the figure, reference numeral 40 denotes a bypass which bypasses a part of the water in the riser pipe 10, and reference numeral 41 denotes a flow rate of the water flowing through the bypass 40. Is a flow meter that measures

Reference numeral 42 denotes a bypass for bypassing a part of the water in the downcomer 14, reference numeral 43 denotes a flow meter for measuring the flow rate of water flowing through the bypass 42, and reference numeral 44 denotes a flow meter 41 and a flow meter 43. From the flow rate, riser 10 and downcomer 14
Differential pressure calculating means 45 for calculating the differential pressure of the differential pressure calculating means 4
This is concentration calculating means for calculating the concentration of ice water in the pipe from the differential pressure calculated in 4.

In this embodiment, the differential pressure is calculated from the measurement results of the flow meters 41 and 43, and based on the differential pressure, the concentration of the ice water circulating in the pipe is calculated by the concentration calculating means 45, and the calculated value is calculated. Based on the above, the concentration of the ice water 1 conveyed to the heat exchanger 3 is adjusted by the concentration adjusting means 6 to a predetermined concentration.

In this embodiment, the apparatus in which the pump 4 is provided between the concentration adjusting means 6 and the concentration measuring means 5 has been described, but the pump 4 is provided between the heat storage tank 1 and the concentration adjusting means 6 or between the concentration measuring means 5 and the heat measuring means 5. It may be provided between the exchangers 3 and has the same effect as the above embodiment.

In the above embodiment, the ice water 1 is supplied to the riser 1
Although the device which flows in the order of 0 and the downcomer 14 has been described,
As shown in FIG. 9, a device that flows in the order of the downcomer pipe 14 and the ascending pipe 10 may be used, and the same effect as in the above embodiment can be obtained.

In the above embodiment, two flow meters 41,
Although the apparatus using 43 has been described, as shown in FIG. 10, a bypass 40 connecting each differential pressure measuring means to the rising pipe 10, a bypass 42 connecting to the descending pipe 14, 42 and a three-way valve 50 connecting the flow meter 51, a connection pipe 52 connecting each three-way valve 50 and the flow meter 51, and a differential pressure calculating means 44 for calculating a differential pressure from a flow rate measured by the flow meter 51. The device may be configured to provide the same effects as in the above embodiment.

Further, as shown in FIG. 11, the downstream side bypass path connecting each differential pressure measuring means to the riser pipe 10 and the upstream side bypass path connected to the downcomer pipe 14 are the same bypass path. The bypass passage 40 connected to the riser pipe 10, the bypass passage 42 connected to the downcomer pipe 14, and the flow meter 51 are connected to a three-way valve 50, and the three-way valve 50 and the flow meter 51 are connected by a connection pipe 52, From the flow rate measured by the flow meter 51, the differential pressure may be calculated by the differential pressure calculating means 44, and the same effect as in the above embodiment can be obtained.

Embodiment 4 FIG. FIG. 12 shows a device capable of zero correction of the flow meter. Reference numeral 60 denotes an on-off valve provided in the middle of the bypass passages 40 and 42. When the concentration in the pipe is measured, the on-off valve 60 is opened, and when the zero point of the flow meter is corrected,
By closing the on-off valve 60, the zero point can be corrected, and highly accurate ice concentration measurement can be performed.

[0054]

As described above, according to the first aspect of the present invention, the concentration measuring means for measuring and adjusting the concentration of ice water in the pipe is provided with the riser pipe for supplying the ice water in the rising direction, and the riser pipe. A downcomer that continuously supplies the ice water in the down direction, and at the same elevation difference in the ascending tube and the downcomer , respectively.
Riser pipe differential pressure measurement means and downcomer pipe differential pressure measurement means for measuring the differential pressure between the upstream and downstream sides of the Based on the differential pressure, the concentration calculating means is configured to calculate the concentration of the ice water, and the calculation result is input to the concentration adjusting means. Since the concentration can be measured accurately and the clogging of the ice water piping can be avoided,
There is an effect that ice water having an appropriate concentration is supplied to the heat exchanger, and cooling and freezing can be efficiently performed.

According to the second aspect of the present invention, the ascending pipe differential pressure measuring means and the descending pipe differential pressure measuring means are provided on the ascending pipe and the descending pipe at predetermined intervals, respectively. And a differential pressure gauge that measures the differential pressure between the connecting devices, and the upper and lower connecting devices and the differential pressure gauge are configured to be connected by a connecting pipe, so that the differential pressure between the ascending pipe and the descending pipe can be accurately measured. Yes, and even when the concentration of ice water in the pipe changes, it can be measured as a change in the differential pressure according to the change, so that the concentration of ice water in the pipe can be accurately calculated within a sufficiently short time. The effect is obtained.

According to the third aspect of the present invention, the connecting pipe is connected to the bypass which bypasses the differential pressure gauge, and the on-off valve for correcting the zero of the differential pressure gauge is provided in the middle of the bypass. The zero point of the differential pressure gauge for measuring the differential pressure of the pipe and the zero point of the differential pressure gauge for measuring the differential pressure of the downcomer pipe can be corrected, thereby providing an effect capable of realizing highly accurate concentration calculation.

According to the fourth aspect of the present invention, the flow meter is provided in the middle of a bypass which bypasses a part of the ice water flowing through the ascending pipe and the descending pipe, and the flow rate of the ice water measured by the flow meter is determined by the flow rate of the ice water. At the same height difference between the pipe and the downcomer
Differential pressure calculating means for calculating the differential pressure between the upstream side and the downstream side, and from the calculation result by the differential pressure calculating means, the concentration calculating means calculates the concentration of the ice water, and the calculation result Is input to the concentration adjusting means, so that the pressure difference between the riser pipe and the downcomer pipe can be accurately calculated based on the flow rate detection value, and even if the concentration of ice water in the pipe changes, the change is not affected. Since the corresponding change in the flow rate can be measured, there is an effect that the concentration of ice water in the riser pipe and the descender pipe can be accurately calculated within a sufficiently short time.

According to the fifth aspect of the present invention, the flow rate of the ice water measured by the flow meter provided in the middle of the bypass which bypasses a part of the ice water flowing through the riser pipe and the descender pipe is measured. At the same height difference between the pipe and the downcomer
Pressure difference calculating means for calculating the differential pressure between the upstream side and the downstream side, and the concentration of the ice water is calculated from the calculation result by the pressure difference calculating means, and the calculation result is input to the concentration adjusting means. The calculation means is provided, and an on-off valve for correcting the flow meter zero point is provided in the middle of the bypass path, so that the flow path for measuring the flow rate of water flowing through the bypass path and the bypass path connected to the downcomer pipe are provided. It is possible to correct the zero point of the flow meter that measures the flow rate of flowing water, thereby obtaining an apparatus that can realize highly accurate concentration calculation.

[Brief description of the drawings]

FIG. 1 is a configuration diagram showing an ice water transport device according to an embodiment of the present invention.

FIG. 2 is a configuration diagram showing another installation mode of the connection device in FIG. 1;

FIG. 3 is a configuration diagram showing still another installation mode of the connection device in FIG. 1;

FIG. 4 is a configuration diagram showing an example of a piping configuration of a downcomer pipe and a riser pipe in FIG.

FIG. 5 is a configuration diagram showing a configuration example of a differential pressure measuring means in FIG. 1;

FIG. 6 is a configuration diagram showing another configuration example of the differential pressure measuring means in FIG. 1;

FIG. 7 is a block diagram showing a zero point correction circuit of a rising pipe differential pressure measuring means or a descending pipe differential pressure measuring means according to the invention of claim 3;

FIG. 8 is a configuration diagram showing an ice water transport device according to an embodiment of the present invention.

9 is a configuration diagram illustrating an example of a piping configuration in FIG. 8;

FIG. 10 is a configuration diagram illustrating a configuration example of a flow rate measuring unit in FIG. 8;

FIG. 11 is a configuration diagram illustrating another configuration example of the flow rate measurement unit in FIG. 8;

FIG. 12 is a block diagram showing a zero point correction circuit of an ascending pipe differential pressure measuring means or a descending pipe differential pressure measuring means according to an embodiment of the present invention.

FIG. 13 is a configuration diagram showing a conventional ice water transport device.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Ice water 2 Heat storage tank 3 Heat exchanger 4 Pump 5 Concentration measuring means 6 Concentration adjusting means 10 Rise pipe 11,15 Connecting device 12,16 Differential pressure gauge 13,17 Connecting pipe 14 Downcoming pipe 18 Concentration calculating means 20 Three-way valve 21 Differential pressure gauge 22 Connection piping 25 Connection device 30 Bypass path 31 On-off valve 32 On-off valve 40, 42 Bypass path 41, 43 Flow meter 44 Differential pressure calculating means 45 Concentration calculating means 50 Three-way valve 51 Flow meter 52 Connecting pipe P Rising pipe differential pressure measuring means Q Downcomer differential pressure measuring means 60 Open / close valve 70 Sample extraction pipe 71 Heater 72, 73 Thermometer 74 Flowmeter 75 Required calorie calculating means 76 Concentration calculating means .

──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor: All Doi 8-1-1, Tsukaguchi Honcho, Amagasaki City Mitsubishi Electric Corporation Central Research Laboratory (72) Inventor: Naoki Tanaka 8-1-1, Tsukaguchi Honcho, Amagasaki City Mitsubishi Inside the Central Research Laboratory of Electric Machinery Co., Ltd. (72) Inventor Koichi Ohata 2-2-2 Dojima, Kita-ku, Osaka-shi Mitsubishi Electric Corporation Kansai Branch Office (56) References JP-A-4-68240 (JP, A) JP-A-6-221628 (JP, A) JP-A-5-281167 (JP, A) JP-A-2-24546 (JP, A) JP-A-4-66854 (JP, A) JP-A-4-270834 ( JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) F24F 5/00 F25D 17/02 F28D 20/00

Claims (5)

(57) [Claims] 1. A heat storage tank for storing ice water generated by freezing part of water or an aqueous solution, a heat exchanger for cooling or freezing using ice water transported from the heat storage tank by a pump, and the heat storage tank A concentration measuring means provided in the middle of the pipe from the heat exchanger to measure the concentration of ice water in the pipe, and adjusting the concentration of ice water in the pipe in accordance with a value measured by the concentration measuring means. An ice water transport device having a concentration adjusting means for performing the concentration measuring means, an ascending pipe for supplying the ice water in an ascending direction, and a descending pipe which is continuous with the ascending pipe and supplies the ice water in a descending direction, Ascending pipe differential pressure measuring means and descending pipe differential pressure measuring means for measuring the differential pressure between the upstream side and the downstream side at the same elevation difference in the riser pipe and the descending pipe; The pipe differential pressure measurement means An ice water transport device, comprising: a concentration calculating means for calculating the concentration of the ice water based on the measured differential pressure, and inputting the calculation result to the concentration adjusting means. 2. An ascending pipe differential pressure measuring means and a descending pipe differential pressure measuring means, each of which is provided at a predetermined interval in each of an ascending pipe and a descending pipe, and a differential pressure between the upper and lower connecting apparatuses. The ice water transport device according to claim 1, comprising a differential pressure gauge for measuring, and a connecting pipe for connecting the upper and lower connecting devices and the differential pressure gauge. 3. An ascending pipe differential pressure measuring means and a descending pipe differential pressure measuring means are provided on upper and lower connecting pipes at predetermined intervals, respectively, and a differential pressure between the upper and lower connecting apparatuses is provided. A differential pressure gauge to be measured, a connecting pipe connecting the upper and lower connecting devices and the differential pressure gauge, a bypass connected to the connecting pipe and bypassing the differential pressure gauge, and a differential pressure gauge provided in the middle of the bypass. The ice water transport device according to claim 1, comprising an on-off valve for zero point correction. 4. A heat storage tank for storing ice water generated by freezing part of water or an aqueous solution, a heat exchanger for cooling or freezing using ice water transported from the heat storage tank by a pump, and the heat storage tank A concentration measuring means provided in the middle of the pipe from the heat exchanger to measure the concentration of ice water in the pipe, and adjusting the concentration of ice water in the pipe in accordance with a value measured by the concentration measuring means. An ice water transport device having a concentration adjusting means for performing the concentration measuring means, an ascending pipe for supplying the ice water in an ascending direction, and a descending pipe which is continuous with the ascending pipe and supplies the ice water in a descending direction, A bypass passage for bypassing a part of the ice water flowing through the riser and the downcomer; a flow meter provided in the middle of the bypass; and a flow rate of the ice water measured by the flow meter, the riser and the lower
Differential pressure calculating means for calculating the differential pressure between the upstream side and the downstream side at the same height difference, and the concentration of the ice water is calculated from the calculation result by the differential pressure calculating means, and the calculated result is subjected to the concentration adjustment. And a concentration calculating means for inputting to the means. 5. A heat storage tank for storing ice water generated by freezing a part of water or an aqueous solution, a heat exchanger for cooling or freezing using ice water transported from the heat storage tank by a pump, and the heat storage tank A concentration measuring means provided in the middle of the pipe from the heat exchanger to measure the concentration of ice water in the pipe, and adjusting the concentration of ice water in the pipe in accordance with a value measured by the concentration measuring means. An ice water transport device having a concentration adjusting means for performing the concentration measuring means, an ascending pipe for supplying the ice water in an ascending direction, and a descending pipe which is continuous with the ascending pipe and supplies the ice water in a descending direction, A bypass passage for bypassing a part of the ice water flowing through the riser and the downcomer; a flow meter provided in the middle of the bypass; and a flow rate of the ice water measured by the flow meter, the riser and the lower
Differential pressure calculating means for calculating the differential pressure between the upstream side and the downstream side at the same height difference, and the concentration of the ice water is calculated from the calculation result by the differential pressure calculating means, and the calculated result is subjected to the concentration adjustment. An ice-water transport device comprising: a concentration calculating means input to the means; and a flowmeter zero-point correction on-off valve provided in the middle of the bypass path.