KR20050082395A - Heat storage system - Google Patents

Abstract

The present invention relates to a heat storage tank system, the purpose of which is to heat the night heat storage (heating) in the form of hot water or cold water or ice by driving the heat pump using the power of the late night to save heat by radiating or cooling during the day time It's about the system.

To this end, the heat storage system includes a tank 30, hot or cold water inlets 27 and outlets 28, tube groups 1, 2, 3, 4, 5, headers 20, 21, 22, 23, 24, 25) and the baffle plate 31 is installed, and in the heat storage operation (midnight), the heat exchange between the refrigerant in the tube and the water in the tank 30 is performed to heat the hot or cold water or ice, and during the cold cooling (weekly) It is configured to supply a heat pump storage tank 30 for cooling and radiating heat by directly circulating water in the tank 30.

Description

Heat storage tank system {HEAT STORAGE SYSTEM}

The present invention relates to a heat storage tank system, the purpose of which is to heat the night heat storage (heating) in the form of hot or cold water or ice in the form of hot water or cold water or ice by using the power of the late night to save heat by radiating or cooling in day time It's about the system.

The conventional heat storage system is composed of a system for passing water or brine into a tube group (1, 2, 3, 4, 5) or a system for directly passing a refrigerant into a tube. In the system for passing water or brine, there is a disadvantage in that the apparatus is large and expensive as an indirect method of refrigerant and water, and in the heat storage tank system for directly passing the refrigerant into the tube, the tube group (1, 2, 3, 4, 5) there is a problem in the distribution of refrigerant flow rate, it is difficult to install the baffle plate 31 inside the heat storage tank, it is difficult to arrange the tube inside the heat storage tank in the form of a heat storage tank of the rectangular structure, the tank 30 because of the open structure The flow rate of the fluid (water) in the inside has a disadvantage in that the size of the heat exchanger becomes large.

In addition, there is a problem that the distribution of the refrigerant in the tubes 1, 2, 3, 4, 5 nourishs the heat pump system or decreases the capacity when a mismatch occurs.

The present invention seeks the following technology to solve the above problems.

First, the inlet 27 of the tank 30 is located inside the tank 30 to control the inflow direction and flow of the internal fluid (water), and the baffle plate 31 is located inside the tank 30 so that the fluid Improves heat transfer performance by distributing (water) and vortex.

Second, the tube group 1, 2, 3, 4, 5 is located in the tank 30, so that the distribution and flow control of the refrigerant is constantly controlled through the headers 20, 21, 22, 23, 24, 25. This can improve the heat transfer effect of the heat pipe.

Third, the number of connecting tubes of the tube groups 1, 5 of the inlet header 20 and the outlet header 21 is determined in accordance with the capacity of the heat storage tank, so that the tube groups 1, 2, 3, 4, 5 with the optimal heat transfer effect. System to produce the minimum quantity.

Fourth, by using the tube group (1, 2, 3, 4, 5) as a condenser and evaporator of the heat pump system, the heat storage tank is used to accumulate hot water in winter, and to use the cold water or ice heat storage in summer to increase the annual usage time High energy savings can be achieved.

The technical problem of the present invention is to be clearly interpreted by the configuration of the preferred embodiment presented in the configuration of the invention.

In order to achieve the above object, the heat storage tank system according to the present invention changes the direction of the fluid in the baffle plate by introducing the fluid (water) into the tank, and at this time, the heat exchange with the refrigerant inside the tube group is discharged, the tube group inside Furnace is a heat storage tank system that cools and heats the water inside the tank by introducing refrigerant liquid or gas, and optimizes the quantity of tubes connected to the header of the tube to generate a refrigerant distribution and high heat transfer effect. It is done.

The features and advantages of the present invention will become more apparent from the detailed description of the preferred embodiments based on the accompanying drawings. Prior to this, terms or words used in the present specification and claims should not be construed as being limited to the common or dictionary meanings, and the inventors may properly interpret the concept of terms in order to best explain their own invention. Based on the principle that can be defined, it should be interpreted as meaning and concept corresponding to the technical idea of the present invention.

EMBODIMENT OF THE INVENTION Hereinafter, the Example of the heat storage tank system which concerns on this invention is described, referring an accompanying drawing.

1 is a cross-sectional view of a heat storage tank system according to the present invention, wherein the tank 30, the inlet 27, the baffle plate 31, the heat transfer pipe group 1, 2, 3, 4, 5 and the header 20, 21 are shown in FIG. , 22, 23, 24, 25 is a heat storage tank system (80).

Reference numerals (1, 2, 3, 4, 5) are a group of tubes (heat pipes) in which the refrigerant (gas + liquid) and the fluid (water) exchange heat, and in the form of a straight pipe, a corrugated pipe, and a spiral The processing pipe etc. which processed the inside and the outside of the back is used, and the refrigerant gas or the liquid refrigerant can pass through the inside of the tube, and the headers 20, 21, 22, 23, 24, 25 at the inlet and the middle of the fluid. By installing the control the uniform flow of fluid to the tube group (1, 2, 3, 4, 5) by the smooth distribution of the refrigerant.

1 is drawn through the fluid (water) inlet 27 in the tank 30 of the heat storage tank system according to FIG. 1 to generate heat and distribute the fluid (water) by the internal baffle plate 31 of the tank 30 to conduct heat transfer. Improve performance

At this time, the fluid (water) in the tank 30 is discharged to the outlet 28 after heat exchange with the fluid (refrigerant) in the tube group (1, 2, 3, 4, 5) installed in the tank 30. . In the case of heat storage operation (midnight), only the temperature of the fluid (water) inside the tank 30 is raised in the stopped state (no inflow and outflow).

At this time, the amount of installation of the baffle plate 31 is determined by the flow rate of the internal fluid of the tank 30 and the heat storage tank heat capacity.

In addition, the refrigerant inside the tube group (1, 2, 3, 4, 5) is introduced into the inlet header 20 and mixed in the intermediate header 23 after heat exchange in the five-row tube (5), the intermediate header (23) It is introduced into the four-row tube (4) connected to the heat exchanger is introduced into the intermediate header (24) after heat exchange and mixed, and then is introduced into the third-row tube (3) and mixed into the intermediate header (22) after heat exchange, and then the intermediate header (22) ) Is introduced into the second row tube (2) connected to the heat exchanger and then mixed into the middle header (25) after heat exchange, and is introduced into the first row tube (1) connected to the intermediate header (25) and discharged to the outlet header (21) after heat exchange. do. The intermediate headers 22, 23, 24 and 25 connect the tube rows before and after the header, and are redistributed after mixing to redistribute not only the connecting device but also the problem of uneven flow or unbalanced heat exchange. The problem can be minimized.

The number of connections of the first row tubes 1 of the inlet and outlet headers 20, 21 is determined by the capacity of the heat exchanger and the internal flow rates of the tube groups 1, 2, 3, 4, 5.

1 and 2, the structure of the heat exchanger is provided with a fluid (water) inlet 27 in the tank 30, the tank 30 is a tube group (1, 2, 3, 4, 5) and the inside The baffle plate 31 is attached in a circular shape as shown in FIG. The intermediate header 25 is connected to the tube 26 for connection of the first row tube 1 and the second row tube 2 as shown in FIGS. 1 and 2, and the intermediate header 22 is shown in FIGS. 1 and 2. It is connected by a tube 27 for connection to a two-row tube 2 and a three-row tube 3, and the intermediate header 24 is a three-row tube 3 and a four-row tube 4 as shown in Figs. The intermediate header 23 is connected to the tube 29 for connection to the four-row tube 4 and the five-row tube 5, as shown in Figs. have.

The intermediate headers 22, 23, 24 and 25 may be omitted depending on the heat exchanger type and may be configured by direct connection of the tubes 1, 2, 3, 4 and 5.

Operation modes of the present invention include heat storage operation (hot water heat storage, cold water heat storage, ice heat storage) and heat exchange operation.

First, the hot water heat storage operation is a heat storage operation by heating water in the tank 30, and the tube group (1, 2, 3, 4, 5) is used as a condenser 80 in the heat pump compressor (50). The high-temperature and high-pressure discharge gas at the outlet is introduced into the inlet header 20 to condense after heat exchange with water inside the tank 30 in the tube groups 1, 2, 3, 4, and 5, and the outlet header ( 21 is discharged to the evaporator 51 of the heat pump system.

At this time, the water in the tank 30 is configured as a structure in which the internal forced circulation of the tank 30 by the stationary state and the convection circulation pump.

Secondly, the cold water heat storage operation is an operation to cool the water in the tank 30 to accumulate the refrigerant, and the refrigerant at the outlet of the expansion valve 53 of the heat pump in the form of using a tube group (1, 2, 3, 4, 5) as an evaporator. The liquid is introduced into the inlet header 20, and after heat exchange with water in the tank 30 in the tube groups 1, 2, 3, 4 and 5, evaporates into gas and is discharged to the outlet header 21 in the gas phase. It is then introduced into the compressor 50 of the heat pump system.

At this time, the water in the tank 30 is configured as a structure that is forced to circulate into the tank 30 by the stop state and the convection circulation pump.

Third, the ice storage operation is to cool the water in the tank 30 to cool the water in the form of ice, and the tube group (1, 2, 3, 4, 5) is used as the evaporator 51, and the expansion valve of the heat pump ( 53) The refrigerant liquid at the outlet is introduced into the inlet header 20, and heat exchanges with the water inside the tank 30 in the tube group 1, 2, 3, 4, 5, and then evaporates into gas and exits into the gas phase. It is discharged to 21 and drawn into the compressor 50 of the heat pump system.

At this time, the water in the tank 30 is configured as a structure in which the tank 30 is forcedly circulated by the stationary state and the convection circulation pump.

Fourth, the heat exchange operation is an operation for cooling or heating the water in the tank 30, and the tube group (1, 2, 3, 4, 5) is used as the evaporator 51 or the condenser 80 tank ( The water inside 30 is circulated. In the heat storage operation, the water flows in and out of the inlet 27 and the outlet 28 in the heat exchange operation as compared with the up and down convection circulation of the heat storage tank.

As will be apparent from the above description, the present invention is a device for heat storage or heat storage or heat exchange, in which a refrigerant is introduced into a tube and water is introduced into a tank to exchange heat. It is a system used as an evaporator. It is a form of daytime cooling or heat dissipation operation by accumulating hot water or cold water or ice by heat storage operation at midnight electric power. Alternatively, it is economical because it can exchange heat, and it provides energy saving effect by improving the performance of heat pump by increasing the heat transfer effect for the sieve of the middle header in the tube group.

1 is a cross-sectional view of a heat exchanger system according to the present invention.

2 is a cross-sectional view taken along the line "A-A" of FIG.

3 is a heat pump system with a heat storage system attached

<Description of the code | symbol about the principal part of drawing>

1-single row tube 2-2 row tube

20-Refrigerant Inlet Header 21-Refrigerant Outlet Header

30-tank

Claims (4)

In a heat storage system composed of a tube group (1, 2, 3, 4, 5), an inlet (27), an outlet (28) and a header (20, 21, 22, 23, 24, 25) inside the tank (30). In the water inside the tank 30, the direction of the fluid is changed by the baffle plate 31, and the refrigerant is introduced from the inlet header 20 to allow the tanks 1, 2, 3, 4, 5 to be tanked. (30) The heat exchanger with the water inside the outlet header 21 is discharged to the outlet of the tube group (1, 2, 3, 4, 5) is attached to the intermediate header (22, 23, 24, 25) Heat storage system. The tank 30 has a baffle plate 31, a tube group (1, 2, 3, 4, 5), a header (20, 21, 22, 23, 24, 25), an inlet ( 27) and a system in which the outlet 28 is attached, wherein the baffle plate 31 or intermediate headers 22, 23, 24, 25 are omitted. The tube group (1, 2, 3, 4, 5) draws fluid into the inlet header (20), and the header (22) between the tube groups (1, 2, 3, 4, 5). 23, 24, 25 are attached, the header 21 is attached to the outlet in the system, the number of attachment tubes 21 and outlet header 20, the number of attachment tubes can be changed as needed System. The method according to claim 1, wherein the tube or tube is formed by processing the inner and outer tubes by straight or corrugated pipe or spiral.