JPS5826973A - Low and high temperature generator and air-conditioning system using said generator - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a heating and cooling system using the same and utilizing solar energy.

Currently, various systems for storing solar energy and using it for heating and cooling have been proposed, and some are in practical use. The method of storing solar energy is widely adopted as it is a method of absorbing solar heat into water, rocks, concrete, etc. and storing it as thermal energy, but it effectively prevents the heat dissipated during storage. Insulating materials have not yet been developed and therefore cannot be stored for long periods of time.On the other hand, when converting solar energy into electrical energy, chemical energy, etc. Since it is not needed, energy can be stored for a long time.

In particular, the present invention utilizes natural energy such as solar energy or geothermal energy to concentrate an aqueous solution of a hygroscopic substance, and if necessary, the difference in concentration between the aqueous solution of a hygroscopic substance taken out and water, that is, the vapor pressure 11, is It utilizes the exchange of latent heat of vaporization based on

The low/high temperature generator of the present invention, which generates a cold heat source and a high heat source by utilizing a concentration difference, has a high temperature side plate with good thermal conductivity and a concentrated solution retaining layer to which a concentrated solution of a hygroscopic substance is supplied. It consists of a low-temperature side plate with good thermal conductivity and has a solvent holding layer to which a solvent is supplied, and the gist is that the concentrated solution holding layer and the solvent holding layer face each other with a space provided between them.

In the apparatus of the present invention, in order to obtain a higher temperature heat source and a lower temperature heat source, between the high temperature side plate and the low temperature side plate,
An intermediate plate having good thermal conductivity and having a concentrated solution retaining layer on one surface and a solvent retaining layer on the other surface may be inserted so that the concentrated solution retaining layer and the intermediate plate face each other with a space therebetween.

How the low/high temperature generator of the present invention can replace the high heat source and the cold heat source will be described in detail later.

The present invention further provides a heat collecting device, a heat collecting device using the thermal energy collected by the heat collecting device as a heat source, and a concentrated liquid absorbing layer to which a solution of a hygroscopic substance is supplied, which is provided with a back cover with respect to the heat source. A concentrator comprising a heat source side plate having good conductivity and a low temperature side plate having good heat conductivity and having a condensate absorbing layer facing the concentrated liquid absorbing layer with a gap therebetween; A device, a means for producing a high temperature medium through heat exchange with a high temperature side plate of the low/high temperature generator and supplying the high temperature medium to the heating device, a low/high temperature generating device, supplying the low temperature medium to the cooling device through heat exchange with the low temperature side plate of the low/high temperature generator. means for storing the concentrated solution and solvent obtained by the concentrator and supplying them to the low and high temperature generator, and means for storing and supplying the diluted solution discharged from the low and high temperature generator to the concentrator. Regarding heating and cooling systems.

When using the air conditioning system of the present invention, solar energy and the like can be efficiently and stably stored as concentration difference energy for a long period of time, and a cold heat source and a high heat source can be provided whenever necessary.

As the hygroscopic substance used in the present invention, for example, lithium halides such as lithium bromide and lithium iodide, calcium chloride, ammonia, glycerin, or mixtures thereof are suitable, and the solvent is preferably water. Among these, an aqueous solution of lithium bromide is particularly preferred.

Hereinafter, the low/high temperature generating device and air conditioning system of the present invention will be described in more detail, and for ease of explanation, a case will be described in which a lithium bromide aqueous solution is used as the solution of the hygroscopic substance.

The concentrated solution retaining layer and the solvent retaining layer of the low/high temperature generator are abbreviated as a moisture absorbing layer and a water retaining layer, respectively, and the concentrated absorption layer and condensate absorbing layer of a concentrator are abbreviated as a concentrating layer and a condensing layer, respectively.

Next, the low and high temperature generating device of the present invention and its effects will be explained based on FIG.

The device of the present invention includes a water-retaining layer (3) provided on a low-temperature side plate (1) with good thermal conductivity, and a space (3) between the water-retaining layer (3) and
It basically consists of a high-temperature side plate (2) with good thermal conductivity, which is provided with a moisture-absorbing layer (4) facing each other. Boards (1) and (2) have a water retention layer (
3) and the moisture absorption layer (4) are held so as not to come into contact with each other. The water retaining layer (3) is impregnated with pure water, and the moisture absorbing layer (4) is impregnated with a concentrated aqueous solution of lithium bromide.

With this configuration, at the temperature To, the vapor pressure Pwo of the pure water impregnated in the water retention layer (3) is greater than the vapor pressure Pso of the concentrated aqueous solution impregnated in the moisture absorption layer (4). There is.

Pso = Pwo - ΔP ΔP: Decrease in vapor pressure of the solvent due to the moisture absorbent lithium bromide.

Since water vapor corresponding to ΔPK is absorbed into the concentrated aqueous solution, evaporation of pure water proceeds from the water retention layer (3), and water vapor is condensed and absorbed in the moisture absorption layer (4). Therefore, the water retention layer (3
), the latent heat of vaporization is continuously removed and the temperature decreases, and in the hygroscopic layer (4) water vapor is continuously condensed and absorbed, raising the temperature.

The generation of this temperature difference continues until the vapor pressure of pure water in the water-retaining layer (3) and the vapor pressure of the concentrated aqueous solution in the moisture-absorbing layer (4) become equal, that is, until equilibrium is reached, resulting in a temperature difference of ΔT. . As a result, the temperature axis of the water-retaining layer (3) and the temperature Ts of the moisture-absorbing layer (4) come to satisfy the following relational expression known as the Frasius-Clapeyron equation, (where λ ρV and ρV are the latent heat of vaporization and vapor density at the temperature To, respectively, and J is the Joule constant.) The effect of trying to generate a temperature difference based on the vapor pressure difference, and the reverse effect of trying to equalize the temperature based on the generated temperature difference. The temperature at which the action reaches equilibrium, i.e., Button = To - α and Ts =
To+α(α−ΔT−−T>O>.

Plate (1) therefore provides a cold source and plate (2) provides a high heat source.

In other words, the low/high temperature generator of the present invention utilizes the vapor pressure difference between a concentrated aqueous solution of hygroscopic lithium bromide and pure water, accelerates the evaporation of water through this action, and cools the water by removing the latent heat of evaporation from the water. On the other hand, the generated water vapor is absorbed by the concentrated aqueous solution and gives latent heat of condensation, which heats the concentrated aqueous solution and creates a temperature difference between the plates. It performs the heat pump function of generating .

This heat pump action is caused by (5) the temperature of the water retaining layer (3) decreasing and the saturated vapor pressure decreasing, and the temperature of the moisture absorbing layer (4) increasing and the saturated vapor pressure increasing, resulting in ΔP = 0. Or, C
B) The pure water in the water retaining layer (3) is depleted, or (
C) Stopping occurs when the concentration of the concentrated aqueous solution decreases and the vapor pressure difference with pure water disappears.

The second step is to restore the stopped heat pump function.
Using the concentrator shown in the figure, the heat source side plate (5) is heated to concentrate the diluted lithium bromide aqueous solution in the condensation layer (7),
What is necessary is to recover its moisture absorption ability, condense the evaporated water vapor in the condensation layer (8), and store pure water in the condensation layer (8). That is, the thermal energy given to the heat source side plate (5) is converted into a difference in concentration of the doctrinal substance (high concentration lithium bromide aqueous solution and pure water) and is stored as heat.

This concentrator has substantially the same structure as the low/high temperature generator of the present invention, and the heat source side plate, concentration layer, condensation layer, and low temperature side plate are respectively the high temperature side plate, moisture absorption layer, water retention layer, and low temperature side plate of the low/high temperature generator. corresponds to

The heat pump action and heat storage action are similar to the relationship between discharge and storage of electricity in a storage battery, and are reversible.

Although various heat sources can be used as the heating source for the heat source side plate (5), it is particularly preferable to use solar energy from the viewpoint of energy saving. Solar energy can be used to heat the plate (5) by absorbing direct radiation, sky radiation, diffusely reflected radiation, etc. by a selective absorption film. At that time 182
As shown in the figure, it is preferable to cover the plate (5) with a single-layer or multi-layer transparent cover (9) to prevent heat loss due to convection of heated air or wind from the outside.

Furthermore, solar heat can be used efficiently when condensing light using a flat or parabolic reflecting mirror, or a Fresnel lens.

In addition, as will be described later, the plate (5) may be indirectly heated using a heat medium heated by a solar collector.

Although the cause of the heat pump action stopping has been explained based on FIG. 1 as (C), a more efficient continuous type embodiment that eliminates these causes will be explained based on FIG. 3. In Fig. 3, the same symbols as in Fig. 1 refer to Fig. 1.
It shows the same parts as the figure.

Stoppage due to water depletion and stoppage due to decrease in moisture absorption capacity due to decrease in concentration of concentrated liquid can be resolved by continuously supplying pure water and concentrated aqueous solution to the water retention layer (3) and moisture absorption layer (4), respectively. Ru.

Pure water is supplied from the water supply port (]0), and from the drain port (1).
1) Water is drained from the water. The concentrated aqueous solution is supplied to the moisture absorbing layer (4)K from the liquid supply port (12), and the diluted liquid is discharged from the liquid drain port (13). The amount of pure water and concentrated aqueous solution supplied may be adjusted as appropriate depending on the intended heating and cooling power and ambient temperature.

In order to use the low-temperature generator of the present invention for air conditioning, cold water for cold N is transferred from the low-humidity side plate (1) and high-temperature side plate (2) to the high-temperature side heat exchanger (15) through the low-temperature side heat exchanger (14), respectively. All you have to do is extract hot water for heating.

When pouring cold water on the outside of the low temperature side plate (1),
Heat is applied to the heat exchanger plate (1) and the water retaining layer (3)
As the temperature increases, the vapor pressure of the pure water increases and the vapor pressure difference widens, promoting evaporation of the pure water and maintaining the temperature of the water retaining layer (3) at approximately the low temperature Tw#c. As a result, cold water at a constant temperature can be obtained continuously.

Similarly, high-temperature water at a constant temperature can be continuously flowed from the high-temperature side plate (2).

When using the continuous type embodiment shown in FIG. Heat is radiated to the outside world, and when heating is required, the amount of heat required for heating can be switched from the outside through the low temperature side heat exchanger (14).

In order to increase the heating and cooling capacity, it is sufficient to use multiple stages as shown in FIG.

The embodiment shown in FIG. 4 is basically a multi-stage structure in which three of the embodiments shown in FIG. 3 are stacked.

The low temperature side plate (16) and the high temperature side plate (17) are each formed integrally with each heat exchanger. The intermediate plates (18) and (19) inserted in the middle are provided with a water-retaining layer (3b) and a moisture-absorbing layer (4a), and a water-retaining layer (3c) and a moisture-absorbing layer (4b), respectively. and the hygroscopic layer is a space (Sl
), (S2), and (S3) are arranged so as to face each other. Below, the water retaining layer (3 m) forming the space (Sl) is shown below.
) and moisture absorption layer (4a) in 531 stages, space (S2)
The combination of the water retaining layer (3b) and the moisture absorbing layer (4b) forming the space (S3) is referred to as the second stage, and the combination of the water retaining layer (3c) and the moisture absorbing layer (4c) forming the space (S3) is referred to as the third stage. In this embodiment, the drain port (11) shown in FIG. 3 is not provided, and the system is designed to supply the deficient amount of pure water from the water supply ports (10a), (10b), and (10c). .

The heat pump action at each stage in this embodiment is essentially the same as that in the embodiment shown in FIG. 1, and is based on the balance between the action due to the vapor pressure difference between pure water and the concentrated aqueous solution and the reverse action due to the temperature difference.

Initially, when a concentrated aqueous solution and pure water at a temperature of To are supplied to the first to third stages of the apparatus at a temperature of To, a temperature difference occurs at each stage.

2. When the steady state is reached, the temperature of the intermediate plate (18) and the temperature T3 of the intermediate plate (19) are To-→, To, respectively.
+f, resulting in a temperature difference of β. Temperature T1 of the low temperature side plate
And the temperature T4 of the high temperature side plate is T2-α (-To-α--β) which is lower by α than the intermediate plate (18) and 73+7 which is higher by T than the intermediate plate (19) due to the same heat pump action as described above. (=To 廿/' +T). That is, a total temperature difference of α, β, and T is changed.

Furthermore, when supplying hot water to the low temperature side heat exchanger (16) to maintain the low temperature side plate at a constant temperature T1, the temperature of the high temperature side plate is T
It is possible to supply a heating heat medium with a higher temperature than 1+α+β+T. When used for air conditioning, cold water at a constant temperature is supplied to the high temperature side heat exchanger (17) to cool the high temperature side plate (14).
The temperature of the cold side plate can be maintained at T4-α-β-T.

The plate used in the present invention may be any plate as long as it has good thermal conductivity, corrosion resistance, and heat resistance, and metal plates such as stainless steel, copper, and titanium, and plastic plates such as polyester resin and phenol resin are preferable.

The moisture absorption layer and water retention layer of the low-temperature generator and the concentration layer and condensation layer of the concentrator are made of felt made of nylon fibers, vinylon fibers, etc., mats made of glass wool, ceramic wool, carbon fibers, metal fibers, etc., or polyurethane, polyvinyl. It is formed by attaching a foam sheet made of alcohol or the like to one or both sides of a board using a suitable adhesive.

The thickness thereof varies depending on the material, rough density, water retention, etc., but is about 1 to 10 mm, preferably about 3 mm.

The shorter the distance between the moisture absorption layer and the water retention layer of the low-temperature generator and the concentration layer and the condensation layer of the concentrator, the shorter the interval, usually 10 to 10
0 mm is preferred.

Each plate is held at the above-mentioned intervals using a heat insulating sealant such as neoprene hard rubber or a foam thereof, thereby forming a sealed evaporation space.

The concentrated solution of the hygroscopic substance supplied to the low-temperature generator varies depending on the type of hygroscopic substance, but in the case of an aqueous lithium bromide solution, it is about 30 to 60% (by weight, the same applies hereinafter).
, usually about 50% is preferred.

When inserting intermediate plates, the number of intermediate plates varies depending on the target temperature, concentration ratio, type of hygroscopic substance or solvent, concentration of the solution used, amount of storage, etc., and is determined by these factors.

Next, an embodiment of a heating and cooling system using the low/high temperature generator of the present invention will be described based on the schematic system diagram shown in FIG.

In Figure 5, (2o) is a heat collector, (21) is a concentrator, (22) is a low-temperature generator, (23) is a concentrated aqueous solution tank of lithium bromide, (24) is a distilled water tank, (2
5) and (26) are the dilution aqueous wave tank, (27) is the cooling heat exchanger, (28) is the heating heat exchanger, (29) and (30) are the cooling tower for the concentrator and the low-temperature generator, respectively. It is a cooling tower for use.

Low and high temperature generator (22) used in the heating and cooling system of the present invention
) is a continuous multi-stage type of the type shown in FIG. 4 using a plurality of intermediate plates.

Low and high temperature generator (22) from concentrated aqueous solution tank (23)
Pump (PI) a concentrated aqueous solution to each moisture absorption layer as necessary.
The required amount of distilled water is supplied from the distilled water tank (24) to the water retention layer by the pump (P2). A high temperature side heat exchanger (31) is integrally provided on the high temperature side plate of the low high temperature generator (22).
) is connected to the cooling tower (3o) and the heating heat exchanger (28) via switching cocks (32a) and (32b). The low temperature side heat exchanger (33), which is integrally provided on the low temperature side plate, is connected to the cooling heat exchanger (27) and the heat collector (2) via the switching cock (34b). .

The lithium bromide aqueous solution diluted in the low-temperature generator (22) is temporarily stored in a diluted aqueous solution tank (25), and pumped (ps) to another diluted aqueous solution tank (26) as needed.
) Sent by K.

The diluted aqueous solution stored in the diluted aqueous solution tank (26) is
It is appropriately supplied to the concentration layer of the concentration device (21) by a pump (P4). A heat exchanger (35) is integrally provided on the heat source side plate of the concentrator (21).
) is supplied with high temperature hot water from a heat collector (20).

A heat exchanger (36) is integrally provided on the low temperature side plate, and is connected to the cooling tower (29) via a pump (P5). The concentrated aqueous solution concentrated by the concentrator (21) is stored in a concentrated aqueous solution tank (23), and the distilled water is stored in a distilled water tank (24)K.

To obtain cold water or hot water for air conditioning or heating, it is sufficient to exchange heat with a low-temperature side heat exchanger and a high-temperature side heat exchanger, respectively, but in order to efficiently obtain cold water at a lower temperature or hot water at a higher temperature, it is necessary to The other heat exchanger can be maintained at a certain temperature using a cooling tower or heat collector, respectively.

In other words, when cooling the air conditioner, the switching cock (32 m), (
32b) to one direction of the cooling tower, and the heat exchanger (
31) to cool the hot side plate. Low and high temperature generator (2
2) has the ability to generate a temperature difference of about 30@C, when maintaining the temperature of the hot side plate at about 35@Ck, cold water of about 5'C is exchanged from the heat exchanger (33). The switching cocks (34a) and (34b) are connected to the cooling heat exchanger (27).
By switching in the direction, cold water of approximately 5° C. can be fed into the heat exchanger (27).

When providing heating or hot water supply, turn on the switching cock (34a), (
34b) towards the heat collector (20)', and a part of the high-temperature water to be sent from the heat collector (20) to the heat exchanger (35) of the concentrator (21) is switched to the high-temperature water cock (48a), (4
8b) is opened appropriately to supply water to the heat exchanger (33) of the low/high temperature generator (22) and heat the low temperature side plate. At this time, the high temperature water cocks (49s+) and (49b) connected to other heat sources are closed. The heating causes the low temperature side plate to rise to approximately 30''C.
When kept at
Approximately 65＠C hot water is obtained from the switch cock (31).
By switching 2a) and (32b) toward the heating heat exchanger (28), hot water of about 05°C can be sent to the heat exchanger (28).

In this way, when there is sunlight in the span, both the concentration of the dilute aqueous solution and the heating are performed using solar energy, but when the sunlight cannot be replaced, such as at night or on cloudy days, the concentrated aqueous solution tank (24) is used. The stored aqueous solution is sent to the low-temperature generator ff1i (22), and another heat source (such as factory exhaust heat) is used as the heating heat source, and the cock (
49a) and (49b) are opened to supply hot water to the heat exchanger (33) for heating. At this time, the cocks (48a) and (48b) for supplying high-temperature water from the heat collecting device are closed. Cock (47m), (47b) is heat exchanger (33)
This is a flow rate adjustment cock when sending water to.

The lithium bromide aqueous solution diluted by the low-temperature generator (22) is temporarily stored in a tank (25), then stored in a diluted aqueous solution tank (26) for the concentrator, and adjusted to the required concentration by the concentrator as needed. Give distilled water at the same time as it is concentrated.

In this way, the air conditioning system of the present invention has a low humidity generation device f.
It is a circulation system in which a concentrated aqueous solution is diluted with fi (22) to obtain a heat exchange medium for air conditioning and heating, and the diluted aqueous solution is concentrated using solar energy etc. in a concentrator to obtain a concentrated concentrated solution and distilled water. Since solar energy and the like are once converted into concentration difference energy and stored, energy loss during storage is extremely small, and compact and simple equipment is sufficient for maintenance.

As the concentrator used in the heating and cooling system of the present invention, a multi-stage continuous concentrator whose schematic cross-sectional view is shown in Fig. gJ6 is used. In this embodiment, the heat source side plate having the condensation layer (7a) is integrally formed with the heat exchanger (35), and the low temperature side plate having the condensation layer (8c) is integrally formed with the heat exchanger (36). Further, an intermediate plate (4) having a concentration layer (7b) and a condensation layer (8a) and an intermediate plate (41) having a concentration layer (7c) and a condensation layer (8b) are provided between the heat source side plate and the low temperature side plate, respectively. A concentrated layer and a condensed layer are inserted so as to face each other with a gap between them.The diluted aqueous solution is continuously supplied from the liquid supply port (42) to the uppermost concentrated layer (7c), and is then inserted into the intermediate plate (41).
, (4o) are each provided with a communication vibrator (44),
(43) and is supplied to the concentrated layers (71) and (7a), and is sent from the concentrated liquid outlet (45) to the tank (23) (Fig. 5), where it is condensed in the condensed layer (8a) and heats up the latent heat of condensation. give,
The intermediate plate (40) and the concentrated layer (7b) are heated. Similarly, by applying latent heat of condensation, the heat is repeatedly concentrated and condensed, and the finally transferred heat is removed by the heat exchanger (36). Condensed water, that is, distilled water, is collected from the condensed water outlet (46 m
), (46b) and (46c) and sent to the distilled water tank <24) (Figure 5).

Next, the apparatus and system of the present invention will be explained by giving examples.

Example 1 A temperature difference was generated using a low/high temperature generator of the present invention of the type shown in FIG.

The specifications of the low/high temperature generator were as follows.

Plate: 0.5m x 2m x 2mm corrosion-resistant stainless steel plate Number of stages: 3 stages Moisture absorption layer and water retention layer: 3 mm thick nylon fiber nonwoven fabric Distance between moisture absorption layer and water retention layer: 50mm Temperature of the lithium bromide aqueous solution used is 25'C.

The concentration was 50% and was supplied at a rate of 1.31 Ar.

After about 12 minutes, a steady state is reached, and the temperature of the high temperature side plate is 72＠
C. The temperature of the low temperature side plate was 7°C.

The concentration of the diluted lithium bromide aqueous solution discharged from the low-temperature generator was 26%.

The specifications of this diluted lithium bromide aqueous solution are shown below!
! It was concentrated using a concentrator of the type shown in Figure I6.

Example 2 The low/high temperature generator used in Example 1 and the concentrator of the type shown in FIG. 6 were connected as shown in FIG. 5 to construct a heating and cooling system of the present invention.

(Cooling) The switching cocks (32a) and (32b) connect the cooling tower (30) and the high temperature side heat exchanger (3) of the low/high temperature generator.
1) was connected and the hot side plate was maintained at 45@C.

A 60% lithium bromide aqueous solution and distilled water from the concentrated aqueous solution tank (23) and the distilled water tank (24) were supplied to the low-temperature generator at 1.17 // hr and 2 hr, respectively.
It was supplied at a ratio of 1/br.

Switch the switching cocks (34a) and (34b) to the low temperature side heat exchanger (
33) and the cooling heat exchanger (27), and when we continuously supplied 13°C low-humidity circulating water to the low-temperature side heat exchanger, the temperature reached 8°C at a rate of 200/hr. Cold water was changed.

The discharge concentration of the lithium bromide aqueous solution was 30%.

This diluted aqueous solution (401 kg) was introduced into a concentrator with the following specifications, and 14.6 kg of a 60% lithium bromide aqueous solution was added.
About 25 j (25 kg) of distilled water and about 25 j (251 g) of distilled water were obtained.

(Specifications) Plate: 0.5m x 2m x 2mm corrosion-resistant stainless steel plate Number of stages: 3 stages Condensation layer and concentration layer: 3mm thick nylon fiber nonwoven fabric Spacing between condensation layer and concentration layer: 50mm Heat collector 1: Parabolic type ( Made of aluminum, heat collection area 5
m2) Solar radiant heat (average supply amount 650 kcal/n2・hr
), temperature of heat medium supplied to heat source side heat exchanger = 120
°C Example 3 The heat collector and the low temperature side heat exchanger of the low/high temperature generator are connected by switching cocks (34m) and (34b), the low temperature side plate is 10"CK11m, and the switching cock (32mm) is connected. ,(
32b) connected the high-temperature side heat exchanger and the heating heat exchanger), and 60% lithium bromide aqueous solution and distilled water were supplied at 1.171 Ar # and 21/hr, respectively.

When circulating water for heating at 45°C was supplied to the high temperature side heat exchanger, hot water of 47.61/br and 66@c was obtained.

The concentration of the drained lithium bromide aqueous solution was 30%.

[Brief explanation of drawings]

Fig. 1 is a schematic cross-sectional view of an embodiment of the low-temperature generating device of the present invention, Fig. 2 is a schematic cross-sectional view of an embodiment of the shrinking device, and Fig. 3 is a continuous type low-high temperature generating device of the present invention. 4 is a schematic sectional view of an embodiment of a multi-stage continuous low-temperature generating device; FIG. 5 is a schematic system diagram of an embodiment of the air conditioning system of the present invention; FIG. The figure is a schematic cross-sectional view of an embodiment of a multi-stage continuous concentrator used in the heating and cooling system of the present invention. (Main symbols in the drawings) (1), (6): Low temperature side plate (2): High temperature side plate (5): Heat source side root (20): Heat collector (21): Concentrator (22): Low and high temperature generator ( 23) ': Concentrated aqueous solution tank (24):
Distilled water tank (27): Heating heat exchanger (28): Cooling heat exchanger (1): Interval

Claims (1)

[Scope of Claims] 1. A high-temperature side plate with good thermal conductivity having a concentrated solution holding layer to which a concentrated solution of a hygroscopic substance is supplied, and a high temperature side plate having good thermal conductivity having a solvent holding layer to which a solvent for the concentrated liquid is supplied. A low-temperature generator consisting of a low-temperature side plate with a concentrated solution holding layer and a solvent holding layer facing each other with a gap between them. 2. Between the high-temperature side plate and the low-temperature side plate, an intermediate plate with good thermal conductivity having a concentrated solution retaining layer on one surface and a solvent retaining layer on the other surface is provided to accommodate the concentrated solution retaining layer and the solvent, respectively. 2. The device according to claim 1, wherein the holding layer is inserted so as to face each other with a space therebetween. 3 The hygroscopic substance is lithium bromide, lithium iodide,
3. The device according to claim 1 or 2, wherein the device is calcium chloride or a mixture thereof and the solvent is water. 4. Claim 1 or jI, wherein the high temperature side plate and the low temperature side plate each constitute a part of a heat exchanger.
The device described in Section Z. 5 Heat collection device, a heat source with good thermal conductivity that uses the thermal energy collected by the heat collection device as a heat source, and has a concentrated absorption layer provided on the back side of the heat source to which a solution of a hygroscopic substance is supplied. A concentrating device comprising a side plate and a low-temperature side plate having good thermal conductivity and having a condensate absorbing layer facing the concentrated liquid absorbing layer at a distance, and a hygroscopic substance concentrated in the concentrating device. It consists of a high-temperature side plate with good thermal conductivity, which has a concentrated solution holding layer to which the concentrated solution is supplied, and a low-temperature steel plate with good thermal conductivity, which has a solvent holding layer to which the solvent condensed in the concentrator is supplied. A low and high temperature generator comprising a retention layer and a solvent retention layer facing each other with a space between them; A means for generating a high temperature medium through heat exchange with a high temperature side plate of the low and high temperature generator and supplying the high temperature medium to a heating device; A means for producing a low-temperature medium through heat exchange with the low-temperature side plate of the generator and supplying the low-temperature medium to the cooling device; a means for storing the concentrated solution and solvent obtained in the concentrator and supplying them to the low-temperature generator; , and means for storing the diluted solution discharged from the low-temperature generator and supplying it to the concentrator. 6 Between the heat source side plate and the low temperature side plate of the concentrator, an intermediate plate with good thermal conductivity, which has a liquid to be concentrated absorption layer on one side and a condensed liquid absorption layer on the other side, is provided, respectively. 6. The heating and cooling system according to claim 5, wherein the liquid absorbing layer and the condensate absorbing layer are inserted so as to face each other with a gap between them. 7 Between the high-temperature side plate and the low-temperature side plate of the low-temperature generator, an intermediate plate with good thermal conductivity having a concentrated solution retaining layer on one surface and a solvent retaining layer on the other surface is provided to hold the concentrated solution. 7. The heating and cooling system according to claim 5 or 6, wherein the holding layer and the solvent holding layer are inserted so as to face each other with a gap between them. 8 The hygroscopic substance is lithium bromide, lithium iodide,
The heating and cooling system according to claim 5, 6 or 7, wherein the calcium chloride or a mixture thereof is used and the solvent is water.