JPH0610547B2 - Temperature stratified heat storage tank - Google Patents

Description

TECHNICAL FIELD The present invention relates to a highly efficient temperature stratified heat storage tank.

(Problems to be Solved by the Related Art and Invention) Conventionally, a disk-shaped type having a large heat storage tank formed as means for delivering hot and cold water to a wide area such as district heating and cooling (DHC) and arranged in the heat storage tank It is known that the hot and cold water is distributed to and sent to a predetermined area by using the above distributor.
In this case, in order not to disturb the temperature stratification in the heat storage tank, it is necessary to suppress the flow velocity at the tip of the distributor as much as possible.
The disk diameter of the distributor is increased to weaken the flow velocity when the flow rate increases.

Then, at night, electric power is used to make cooling water or heating water with a large refrigerator or heater, and the cooling water or heating water is stored in a large heat storage tank and supplied to local customers during the daytime. .

(Means for Solving the Problem) The present invention solves the above-mentioned problems in the prior art, that is, so as to surround the blowout header 5 at the tip of the inflow pipe 3 and the delivery header 7 at the base of the delivery pipe 6. An upper distributor 2 having a blow-out / delivery pipe 4 and a lower distributor 10 provided at the ends of a feed pipe 9 and an outflow pipe 11, and the other of the delivery pipe 6 An end and the other end of the feed pipe 9 are connected to an externally installed refrigerator or heater, which is a temperature stratified heat storage tank.

(Example) Hereinafter, the Example of this invention is described based on drawing.

Reference numeral 1 denotes a temperature stratification type heat storage tank. In the heat storage tank 1, an upper distributor 2 is installed above and a lower distributor 10 is installed below, respectively, and hot water and cold water are stored by the distributors 2 and 10. It is flowing in and out.

For example, the operation of each part in the summer will be described. In the upper distributor 2, the cooled return water that has returned after finishing the district cooling for the customer flows into the heat storage tank 1 through the inflow pipe 3.

A blow-out header 5 is formed at the tip of the inflow pipe 3, and the cooled water is blown out from the blow-out header 5.
Are lined up. A can-shaped upper distributor 2 is provided so as to surround the blowing header 5 and the sending header 7. Further, an appropriate number of blowout / delivery pipes 4 are provided on the side wall of the upper distributor 2 so that cooled return water from the inflow pipe 3 and delivery water to the delivery pipe 6 come and go in the picture tube portion. Has become. The delivery pipe 6 is a refrigerator R provided outside through a branch pipe 6 '.
The cooling water connected to E and cooled there enters the inlet pipe 9 through the inlet pipe branch pipe 9 ', and the lower distributor 1
It is sent to the lower part of the heat storage tank from 0.

Further, an outflow pipe 11 is branched into an inflow pipe 9 near the lower distributor 10, and a district cooling for a customer is executed via the pipe 11.

According to the device of the present invention as described above, during the daytime, the cooling water for cooling the customer is sent through the outflow pipe 11, and at the same time, the return water from the customer is fed into the inflow pipe 3, the delivery pipe 6, It is cooled by an externally installed refrigerator RE through the delivery pipe branch pipe 6'and supplied into the heat storage tank. Thus, during the daytime, the operation of the refrigerator RE and the outflow operation of the cooling water for district cooling are simultaneously performed.

Although such simultaneous operation provides some advantages, it makes it possible to cover the capacity of the entire device with low capacity.

That is, when the simultaneous operation is not performed, for example, the cooling water for the daytime use must be produced at night by using a refrigerator with the use of late-night power, and a large-scale, large-capacity refrigeration system can be used to produce a large amount of cooling water in a short time. Machine is needed. In addition, since a large amount of cooling water for one day to be supplied to consumers during the day is required, the heat storage tank 1 must also have a large capacity. Also, in order to produce a large amount of cooling water in a short time, the operating current is high,
The contract current charge with the power company will also be high.

On the other hand, according to the simultaneous operation by the device of the present invention, it is possible to operate for a long time both during the daytime and at the nighttime. Therefore, it is possible to cover the district heating and cooling by using a small-sized low-capacity refrigerator and a heater. As a result, the price of each device can be reduced, and the contract current can be reduced, so that the contract current charge can be reduced.

Next, the stability of the temperature stratification state in the heat storage tank 1 is ensured.

The hot and cold water that has flowed in from the inflow pipe 3 flows out from the blow-out header 5 at the tip thereof, and from the blow-out / delivery pipe 4 the heat storage tank 1
At the same time, the hot and cold water in the heat storage tank 1 is sent from the blowout / delivery pipe 4 through the delivery header 7 to the refrigerator RE through the delivery pipe 6.

At the same time, since cooling water is sent from the lower outflow pipe 11 to the customer, the water level change degree between the temperature stratified water in the upper distributor 2 part and the temperature stratified water in the lower distributor 10 part (that is, the temperature stratified water). Turbulence) is caused by the inflow and outflow of both stratified water, but the difference between the inflow and outflow can be kept small by the simultaneous operation according to the present invention, and as a result, the water level change (turbulence) can be extremely reduced. Is possible.

Then, as described above, inflow and outflow of hot and cold water are simultaneously performed in the upper distributor 2, cooling water is sent out to the customer from the lower outflow pipe 9, and cooling water is sent from the lower distributor 10 into the heat storage tank 1 Therefore, the diameter of the distributor can be reduced to about 60% of the conventional diameter, and the flow velocity of water in the heat storage tank 1 can be suppressed as a whole, so that the disturbance of the temperature stratification is reduced.

The above description is mainly for the case of district cooling, but in the case of district heating, the flow of water in the heat storage tank 1 is reversed, and a heater is used instead of the refrigerator.

(Effects of the Invention) As described above, the upper distributor 2 having the blowing and sending pipe 4 provided so as to surround the blowing header 5 at the tip of the inflow pipe 3 and the sending header 7 at the base of the sending pipe 6, A delivery pipe 9 and a lower distributor 10 provided at the end of the outflow pipe 11 are provided, and the other end of the delivery pipe 6 and the other end of the delivery pipe 9 are externally installed refrigerators or According to the temperature stratified heat storage tank of the present invention which is connected to the heater, the operation of supplying the district cooling / heating water and the operation of the refrigerator or the heater can be performed at the same time during the day, so that the capacity of various equipments is reduced. Therefore, the capacity of the heat storage tank can be reduced.

Further, in the upper distributor, the inflow and outflow of hot and cold water are simultaneously performed, so that the diameter of the distributor can be made extremely small.

[Brief description of drawings]

FIG. 1 is a schematic layout sectional view of a temperature stratified heat storage tank and an external refrigerator of an embodiment of the present invention. 1 ... Temperature stratified heat storage tank, 2 ... upper distributor, 3 ... inflow pipe, 4 ... blowing / delivery pipe, 5 ... blowing header, 6 ... delivery pipe, 6 '... branch pipe, 7 ... Delivery header, 8 ... Partition plate, 9 ... Delivery pipe, 9 '... Branch pipe, 10 ... Lower distributor, 11 ... Outflow pipe,

Claims (1)

[Claims] 1. An upper distributor 2 having a blowout / delivery pipe 4 provided so as to surround a blowout header 5 at the tip of the inflow pipe 3 and a delivery header 7 at the base of a delivery pipe 6, and a feed pipe 9. And a lower distributor 10 provided at the end of the outflow pipe 11, and the other end of the delivery pipe 6 and the other end of the delivery pipe 9 are connected to an externally installed refrigerator or heater. A temperature stratified heat storage tank characterized by the following.