JP2003262360A - Air conditioning system using solar wall unit - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an air conditioning system using a solar wall unit that can use the solar wall for cooling in summer. <P>SOLUTION: This system uses a solar wall unit 17 in which a suction chamber 20 is formed on an inner side of a solar panel 19 having a number of small holes 23 on its surface, and a desiccant air conditioning device 26. In heating, outside air or return air which has been heated by the unit 17 is used for heating inside a room 10. In cooling, outside air or return air is supplied to the device 26, dehumidified and cooled. After that, the air is supplied to inside the room 10 and the outside air that has been heated by the unit 17 is used for regeneration of a dehumidifier rotor 32 of the device 26. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cooling / heating system using a solar wall unit for cooling / heating using solar heat.

[0002]

2. Description of the Related Art As a method of heating by utilizing solar heat, a heating system utilizing a solar wall has been attracting attention.

This solar wall is a solar heat collecting plate formed by forming a small hole of about 1.5 mm in a black surface formed of an aluminum plate or the like so that the opening ratio is 0.3 to 1%. By forming a suction chamber inside the room and sucking the outside air through the small holes, the air that has been heated up to a maximum of about 40 ° C in winter can be obtained, and by introducing this directly into the room, ventilation in the room And there is a merit that can be heated.

Since this solar wall can raise the temperature of the outside air to 20 ° C. or higher without using fossil fuel, it is mainly used for heating in winter and preheating of return air, so that the fuel cost for heating in winter is greatly increased. It is said that the energy consumption can be reduced and the energy can be saved.

[0005]

By the way, the present situation is that this solar wall is not useful as a solar heat collector for heating water supply, although it can obtain higher temperature air in summer.

[0006] Therefore, an object of the present invention is to solve the above-mentioned problems and to provide an air conditioning system using a solar wall unit which can utilize the solar wall even in the cooling in the summer.

[0007]

In order to achieve the above object, the invention of claim 1 uses a solar wall unit in which a suction chamber is formed inside a solar panel having a large number of small holes formed on its surface, The outside air or return air heated by the solar wall unit is supplied to the room during heating, and the outside air or return air is supplied to the desiccant air conditioner to dehumidify during cooling, and then cooled and supplied to the room. A cooling / heating system using a solar wall unit, wherein the outside air heated by the unit is used to regenerate the dehumidifying rotor of the desiccant air conditioner.

According to a second aspect of the present invention, the solar wall units are connected in two stages in series, and the outside air or return air heated in the lower stage is introduced into the upper solar wall unit to further raise the temperature. It is an air conditioning system that uses a wall unit.

According to a third aspect of the present invention, the solar wall unit is constructed such that the surface of the solar panel is covered with a transparent plate such as glass with a space between the solar panel and the heating / cooling using the solar wall unit. system.

According to a fourth aspect of the invention, the desiccant air conditioner is
The casing is divided into a cooling passage and a regeneration / heating passage by a partition plate provided in the center, and a rotatable dehumidifying rotor is provided so as to cross both passages. Is introduced into the cooling passage, is dehumidified through the dehumidifying rotor in the cooling passage, is cooled, and is then supplied indoors, while the outside air heated by the solar wall unit is regenerated and heated. The cooling / heating system using the solar wall unit according to any one of claims 1 to 3, wherein the dehumidifying rotor in the regeneration / heating passage is regenerated with the outside air.

According to a fifth aspect of the present invention, a heater is provided in the regeneration / heating passage, and outside air or return air heated by the solar wall unit is introduced into the regeneration / heating passage during heating. A heating / cooling system using the solar wall unit according to claim 4, which is heated to a predetermined temperature by a heater.

In the sixth aspect of the invention, during cooling, the outside air heated by the solar wall unit is introduced into the regeneration / heating passage to be heated by the heater to the regeneration temperature of the dehumidifying rotor, while the cooling passage is used. The cooling / heating using the solar wall unit according to claim 4, wherein the outside air or return air dehumidified through the inside dehumidifying rotor is cooled by a recooling coil using cold water of 15 to 20 ° C. and supplied to the room. System.

The invention of claim 7 uses the solar wall unit according to claim 5 in which, during heating, outside air or return air heated by the heater of the desiccant air conditioner is humidified by the humidifier and then supplied to the room. It is an air conditioning system.

[0014]

BEST MODE FOR CARRYING OUT THE INVENTION Preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

First, the outline of an air conditioning system using the solar wall unit of the present invention will be described with reference to FIG.

In FIG. 1, 10 is a factory, a supermarket,
In a room such as an office, an indoor unit 12 of a cooling device 11 is provided in the room 10, an outdoor unit 13 is arranged outdoors, and they are connected by a refrigerant pipe 14. The cooling device 11 is an air-cooled heat pump air conditioner in the figure, but may be another cooling device 11.

Warm air is supplied to the ceiling of the room 10 during heating.
At the time of cooling, a cooling / heating duct 16 that blows dehumidified air for ventilation is connected, and a return air line 15 that returns the air in the chamber 10 is connected.

Reference numeral 17 denotes a solar wall unit, in which a solar wall 19 is provided on the surface of a unit body 18 formed in a box shape, and a suction chamber 20 is formed inside the solar wall 19 to further reduce heat loss from the unit. For this purpose, a transparent plate 21 such as a glass plate or an acrylic plate is provided at a distance from the solar wall 19, and an inflow chamber 22 is provided between them.

The solar wall 19 is formed by forming a small hole 23 of about 1.5 mm in a black surface formed of an aluminum plate or the like so as to have an opening ratio of 0.3 to 1%. This solar wall unit 17 sucks outside air or return air into the inflow chamber 22 from between the transparent plate 21 and the solar wall 19 and also through the small hole 23 from the inflow chamber 22 to the suction chamber 2.
By taking the outside air or the return air into 0
The temperature can be raised to not less than ° C.

As shown in the figure, the solar wall unit 17 has a suction chamber 20 of the lower solar wall unit 17 and an inflow chamber 22 of the upper solar wall unit 17 connected in two stages in series by a duct 24 or the like. Thus, the outside air or the return air can be heated to about 50 ° C.

This upper solar wall unit 17
The suction chamber 20 is connected to the hot air inlet duct 27 of the desiccant air conditioner 26 via the duct 25.

In the desiccant air conditioner 26, a partition plate 29 is provided at the center of a casing 28 formed in a tubular shape, and is partitioned into a cooling passage 30 and a regeneration / heating passage 31, and the passages 30 and 31 are crossed. As described above, the dehumidifying rotor 32 is rotatably provided and a heater 33 such as an electric heater is provided in the regeneration / heating passage 31.

A dehumidifying agent such as silica gel is attached to the inside of the dehumidifying rotor 32, and the cooling passage 3 is rotated by the rotation of the dehumidifying rotor 32.
At 0, adsorption / dehumidification is performed, and desorption / regeneration is performed in the regeneration / heating passage 31.

An inlet side of the cooling passage 30 is connected to an outside air introduction duct 34, and a damper 36,
The air supply fan 35 is connected, and the outlet side duct 37 is connected to the cooling / heating duct 16.

A warm air inlet duct 27 connected to the duct 25 of the solar wall unit 18 is connected to the inlet side of the regeneration / heating passage 31, and an exhaust duct 38 is connected to the outlet side. In the exhaust duct 38, the exhaust fan 3
9, the damper 40 is connected.

The cooling / heating duct 16 includes a recooling coil 41.
And the humidifier 42 are connected to each other, and the recooling coil 41 and the humidifier 42 are connected.
The outlet side duct 37 is connected to the cooling / heating duct 16 between the two, and the inlet side of the humidifier 42 branches from the exhaust duct 38 between the exhaust fan 39 and the damper 40.
3 is connected, and the damper 44 is connected to the branch duct 43.

The recooling coil 41 is connected to a cold water supply pipe 45 for supplying cold water from well water, a cooling tower (not shown), etc., and a drain pipe 46 for returning the cold water. The solenoid valve 47 is connected and the other port of the three-way solenoid valve 47 is connected to the cold water supply pipe 45.

In the return air line 15, return air RA is returned to the desiccant air conditioner 26 during cooling to return to the solar wall unit 17 during heating and in order to reduce the air conditioning load during cooling and heating operation. The warm air return line 51 is connected.

That is, the cold air return line 50 is connected so as to connect the return air line 15 and the outside air introduction duct 34 between the damper 36 and the air supply fan 35, and the damper 52 is connected to the line 50. By this cold air return line 50, a part of the return air (cool air) RA exhausted from the return air line 15 after cooling the inside of the chamber 10 at the time of cooling the outside air introduction duct 3
The outdoor air OA from 4 is returned to the cooling passage 30 of the desiccant air conditioner 26 so that the cooling load can be reduced. In addition, the warm air return line 51, the return air line 15,
The solar wall unit 17 is connected so as to connect to the outside air suction duct 53, and dampers 54 and 55 are connected to the outside air suction duct 53 and the warm air return line 51, respectively. By this warm air return line 51, a part of the return air (warm air) RA exhausted from the return air line 15 during heating can be returned to the solar wall unit 17 together with the outside air OA from the outside air suction duct 53 to reduce the heating load. It is like this.

Next, an air conditioning system using the above solar wall unit will be described.

First, during the cooling operation in the summer, the air supply fan 3
5, the outside air OA or the return air RA or the air mixed with the return air RA in the outside air OA is introduced into the cooling passage 30 of the desiccant air conditioner 26 via the outside air introduction duct 34, and dehumidified through the dehumidification rotor 32, While cooling the dehumidified outside air from the outlet side duct 37 by the recooling coil 41 connected to the cooling and heating duct 16, while blowing it into the chamber 10,
The air in the chamber 10 is appropriately exhausted or returned.

In this case, the interior of the room 10 is desiccant air conditioner 2
6 and the re-cooling coil 41 alone, the re-cooling coil 41
Since the temperature of the cold water supplied to the air conditioner becomes low, it becomes necessary to operate the refrigerator, and the air conditioning energy becomes large.
Cool in 1.

In the desiccant air conditioner 26, the dehumidifying rotor 3
When 2 rotates and the dehumidifying rotor 32 rotates to the regeneration and heating passage 31, the moisture adsorbed by the dehumidifying agent such as silica gel of the dehumidification rotor 32 is generated by the hot air supplied into the regeneration and heating passage 31. It is detached and regenerated.

The warm air is first heated by the solar wall unit 17 in the lower stage to raise the outside air (about 30 ° C.) OA sucked from the outside air suction duct 53 to about 60 to 70 ° C., and the raised air is heated in the upper stage. Solar wall unit 17
Then, the temperature is raised to slightly less than 80 ° C., and the temperature of the outside air is raised by the exhaust fan 39 connected to the exhaust duct 38, and the desiccant air conditioner 26 is regenerated and heated through the duct 25 and the hot air inlet duct 27. It is introduced into the passage 31 for heating and the heater 33
Finally, hot air of 80 ° C. is passed through the dehumidifying rotor 32 to desorb the moisture adsorbed on the silica gel or the like, and the desorbed air is exhausted from the exhaust duct 38 as exhaust air EA.

Regeneration in a conventional desiccant air conditioner is
The outside air or the like is directly heated by an electric heater or the like to raise the temperature, and the hot air is used to desorb the water adsorbed in the dehumidifying agent such as silica gel. By increasing the temperature of the outside air OA and / or the return air RA by using 17, it is possible to significantly reduce the electric energy for regeneration, and effectively use the solar wall unit 17, which is unnecessary in the summer. It becomes possible to do.

Conventionally, in the case of using hot air, a desiccant air conditioner in which the feed water is heated by a solar heat collector and the temperature of the outside air is raised by this feed water has been studied, but it is necessary to exchange heat between the hot water and the air. Although the thermal efficiency and the operability are poor and the practicality is low, in the present invention, since the outside air can be directly used as the hot air, the thermal efficiency and the operability can be improved.

When heating is performed in the winter, the solar wall unit 17 in the lower stage is used to open outside air OA or return air R.
A or the mixed air of the outside air OA and the return air RA is heated to about 40 ° C., and the heated air is further heated to about 10 ° C. in the upper solar wall unit 17, and the heated outside air or the returned air is returned. The air is sucked by the exhaust fan 39 connected to the exhaust duct 38, and the duct 25 and the warm air inlet duct 2
A passage 3 for regeneration and heating of the desiccant air conditioner 26 via
1 and finally heated by the heater 33 to a desired temperature, passed through the dehumidifying rotor 32 as it is, passed through the exhaust fan 39 and the branch duct 43, supplied to the humidifier 42, and humidified there. The air is blown into the room 10 from the cooling / heating duct 16 while passing through the re-cooling coil 41 as it is, and the indoor air is exhausted or returned according to the amount of air blown.

Thus, the solar wall unit 1
It is possible to introduce the outside air heated in 7 into the regeneration / heating passage 31 of the desiccant air conditioner 26, and use the heater that was conventionally dedicated to the regeneration of the dehumidifying rotor 32 as the heating heater 33. The desiccant air conditioner 26, which was unnecessary in the winter, can be effectively used.

Next, the above-mentioned cooling and heating system will be described with reference to the psychrometric chart of FIG.

This is a conventional air conditioner (for indoor load processing)
This is an example of the case where the present system is used for outside air load processing in combination with.

During the heating operation in winter, the outside air OA (0 ° C., relative humidity 37%) has a two-stage solar wall unit 1
At 7 and 17, the air WA is raised to about 40 ° C., and the heater 33 such as an electric heater of the desiccant air conditioner 26 is operated at 5
The air HA of 0 ° C. is introduced into the humidifier 42, where it is humidified and blown out according to the lost heating load.
2 ° C., relative humidity 30%) is blown into the chamber 10 and the air RA in the chamber 10 is 22 ° C., relative humidity 50.
% And heated.

During the cooling operation in the summer, the outside air OA '(32.6
(° C, relative humidity 64%) passes through the dehumidifying rotor 32 of the desiccant air conditioner 26 and dehumidified air DA (55 ° C, relative humidity 1
2%) and the recooling coil 41 has a temperature of 26 ° C. and a relative humidity of 5
0% air CA is blown into the chamber 10 for cooling.

At this time, in the re-cooling coil 41, since the dehumidified air DA after dehumidification may be cooled to about 26 ° C., the low-temperature water (7 ° C.) necessary for cooling including the condensation heat as in normal air conditioning is used. ) Is unnecessary and only sensible heat is used for cooling, so 1
Water having a water temperature of about 5 to 20 ° C. can be used, and well water or the like can be used.

The regeneration of the dehumidifying rotor 32 is performed by the two-stage solar wall units 17 and 17 by the outside air OA '.
(32.6 ° C, relative humidity 64%) is changed to air WA 'heated to a little over 70 ° C, and further heated to 80 ° C by the heater 42.
Is introduced into the regeneration / heating passage 31 and the adsorbent such as silica gel of the dehumidifying rotor 32 located in the regeneration / heating passage 31 is regenerated. The regenerated air is exhausted from the exhaust duct 38 as exhaust air EA (50 ° C., about 42%).

In the above-mentioned embodiment, the example in which the solar wall units 17 are used in two stages in series has been described.
The solar wall unit 17 can be used in one stage or three stages. Although the recooling coil 41 has been described as an example provided separately from the desiccant air conditioner 26, it may be incorporated in the desiccant air conditioner 26. Further, during heating, an example is shown in which outside air or return air heated by the solar wall unit 17 is supplied to the chamber 10 through the regeneration / heating passage 31 of the desiccant air conditioner 26 and the dehumidification rotor 32. The heater 33 of the air conditioner 26 is used, and even if the dehumidifying rotor 26 is bypassed without passing through it, the outside air heated by the solar wall unit 17 can be directly supplied to the room. You can

[0046]

In summary, according to the present invention, the following effects are exhibited.

(1) By combining with a desiccant air conditioner, it is possible to use the solar wall unit, which was dedicated to heating, for cooling.

(2) The heater for regeneration installed in the desiccant air conditioner can be used for heating in winter.

(3) Since the solar wall unit is an air heat collecting system, it can be directly used as air for desiccant regeneration without a heat exchanger, unlike a conventional water collecting solar collector, and it can be connected in two stages in series. By this, the outside air can be heated to the temperature required for regeneration.

(4) Since solar energy can be used for both heating and cooling, energy is saved and the efficiency of the entire system is increased.

[Brief description of drawings]

FIG. 1 is a diagram showing an embodiment of the present invention.

FIG. 2 is a diagram illustrating an example of an air conditioning system on a psychrometric diagram in the present invention.

[Explanation of symbols]

10 rooms 17 Solar Wall Unit 19 solar panels 20 suction chamber 23 small holes 26 Desiccant air conditioner 30 Air conditioning passage 31 passage for regeneration and heating 32 Dehumidifying rotor 41 recooling coil

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Masahiro Sekiguchi             1-25-7 Hamamatsucho, Minato-ku, Tokyo Morning Co., Ltd.             Nikko Kogyo Technology Division F-term (reference) 3L053 BA03 BC03

Claims (7)

[Claims] 1. A solar wall unit having a suction chamber formed inside a solar panel having a large number of small holes on the surface and a desiccant air conditioner, and the outside air or the return air heated by the solar wall unit during heating. Is used for heating, and at the time of cooling, outside air or return air is supplied to the desiccant air conditioner to dehumidify it, and then it is cooled and supplied to the room and outside air heated by the solar wall unit is dehumidified rotor of the desiccant air conditioner. A heating / cooling system using a solar wall unit, which is used for recycling 2. The solar wall unit according to claim 1, wherein the solar wall units are connected in series in two stages, and the outside air or return air heated in the lower stage is introduced into the upper solar wall unit to further raise the temperature. Air conditioning system. 3. The cooling / heating system using the solar wall unit according to claim 1, wherein the solar wall unit is configured such that the surface of the solar panel is covered with a transparent plate such as glass at intervals. 4. A desiccant air conditioner has a casing whose partition is divided into a cooling passage and a regeneration / heating passage by a partition plate provided at the center, and a rotatable dehumidifying rotor is provided so as to traverse both passages. The outside air or return air is introduced into the cooling passage during cooling, is dehumidified through the dehumidifying rotor in the cooling passage, is then cooled and supplied to the room, while the temperature is raised from the solar wall unit. The cooling / heating system using the solar wall unit according to claim 1, wherein the generated outside air is introduced into the regeneration / heating passage, and the dehumidifying rotor in the regeneration / heating passage is regenerated with the outside air. 5. A heater is provided in the regeneration / heating passage, and outside air or return air heated by the solar wall unit is introduced into the regeneration / heating passage at the time of heating by the heater.
An air conditioning system using the solar wall unit according to claim 4, which is heated to a predetermined temperature. 6. At the time of cooling, the outside air heated by the solar wall unit is introduced into the passage for regeneration and heating by the heater.
The dehumidifying rotor is heated to the regeneration temperature, while the outside air or return air dehumidified through the dehumidifying rotor in the cooling passage is cooled by 15 to 15%.
The cooling / heating system using the solar wall unit according to claim 4, which is cooled by a re-cooling coil using cold water of 20 ° C. and supplied to the room. 7. The cooling / heating system using a solar wall unit according to claim 5, wherein during heating, the outside air or the return air heated by the heater of the desiccant air conditioner is humidified by the humidifier and then supplied to the room.