JP2016017648A - Air conditioning system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an efficient and economical air conditioning system showing less consumption power by using a flat plate type heat exchanger and heat exchanging means using natural energy.SOLUTION: An air conditioning system 1a comprises an air conditioning panel 4, a vertical type pipe underground heat exchanger 5 and a circulation water temperature adjusting device 6. The air conditioning panel is constructed in such a way that a heat transmitting pipe 3 where circulating water circulates is fixed to a flat panel type heat exchanger 2 having a first heat exchanging medium enclosed at a plurality of pipe passages 11 so as to perform a heat exchanging operation between the first heat exchanging medium and the circulating water. The circulation water got from the air conditioning panel is heat exchanged with the vertical type pipe underground heat exchanger and further its temperature is adjusted by the circulation water temperature adjusting device 6 to become a temperature suitable for an air conditioning performed by the air conditioning panel. Since renewable energy is utilized, a power consumption at the circulation water temperature adjusting device 6 is correspondingly reduced.SELECTED DRAWING: Figure 1

Description

  The present invention provides an air conditioning system including an air conditioning panel that does not use electric power by a flat plate heat exchanger in which a heat exchange medium is enclosed, primary heat exchange means using natural energy, and secondary heat exchange means using electric power. In particular, the present invention relates to an air conditioning system that can reduce the amount of power consumed by the secondary heat exchange means as much as possible as compared with a conventional air conditioner having equivalent air conditioning performance.

  Since the nuclear accident, the problem of power shortage has been highlighted in economic and industrial activities, and in response to this problem, efforts are being made to generate power from renewable energy sources, power machinery and equipment related to daily life and production activities, and save power Has been carried out in every direction. However, it is difficult to fundamentally solve the problem of shortage of power related to daily life and production activities only by saving power and saving power. Along with the development of economic and industrial activities, the amount of power consumption is increasing, and in particular, the proportion of power consumption by air conditioners is large. In particular, the increase in power consumption in summer increases the burden of economic and industrial activities. Therefore, in recent power shortage problems, especially the reduction of power consumption of air conditioning equipment is a problem, and the development of air conditioning equipment with low power consumption is desired.

  Against this background, in recent years, radiant cooling and heating devices have been proposed as air conditioning equipment that has reduced power consumption compared to the prior art. FIG. 18 is a diagram showing a flat type radiant cooling and heating device, and FIG. 19 is a diagram showing a stand type radiant cooling and heating device.

  As shown in FIG. 18, the flat plate type radiation cooling and heating apparatus has a radiant pipe 101 meandering in a radiant panel 100, and a circulating water temperature adjusting device (at both ends of the radiant pipe 101, the inlet side and the outlet side). It is an air conditioner connected to (not shown). An antifreeze liquid (hereinafter referred to as circulating water) is circulated in the radiation pipe 101, and the temperature of the circulating water heat-exchanged in the conditioned space is readjusted to a temperature suitable for air conditioning by the circulating water temperature adjusting device. The temperature of the air-conditioned space is adjusted by continuously exchanging heat between the air-conditioned space.

  As shown in FIG. 19, the stand-type radiant cooling and heating device includes a plurality of radiation pipes 202 along the outer periphery of a disk between a disk-shaped hollow cover member 200 and a disk-shaped hollow bottom member 201. The lid member 200 communicates with the bottom member 201 by vertically piping with a predetermined interval, and the inlet pipe of the lid member 200 communicating with the upper end of each radiation pipe 201 and the bottom member communicating with the lower end of each radiation pipe 201 An air conditioner in which 200 outlet pipes are connected to a circulating water temperature adjusting device (not shown). The circulating water is circulated in the radiation pipe 202, and the temperature of the circulating water heat-exchanged in the air-conditioned space is readjusted to a temperature suitable for air-conditioning by the circulating water temperature adjusting device, thereby heat between the circulating water and the air-conditioned space. The replacement is continuously performed to adjust the temperature of the air-conditioned space.

  The following Patent Document 1 shows an example of a radiation cooling / heating apparatus as described above.

JP-A-5-332580

  According to the conventional radiant cooling and heating device, the circulating water temperature adjustment device plays a role of re-adjusting the temperature of the circulating water that is circulated through the radiation pipe in the radiant panel and exchanged heat with the air-conditioned space to a temperature suitable for air conditioning. Usually, electric power was exclusively used as an energy source for that purpose. As mentioned above, although these radiant cooling and heating devices have been promoted to save power in response to the recent problem of power shortage, essentially relying solely on power as an energy source for heat exchange, There was a problem that I could not hope.

  For example, in a flat type radiant cooling and heating system, depending on the installation location, for example in the case of ceiling installation, the radiant pipe cannot be made thick, so the radiant pipe has to be relatively small in diameter, and therefore radiant heat is required. The amount is reduced. For this reason, in order to obtain the necessary and sufficient air conditioning performance, the capacity of the circulating water temperature control device must be increased, but this also increases the power consumption, and power saving cannot be expected.

  In the stand type radiant cooling and heating apparatus, the radiation pipe can be thickened to increase the radiation area, but the weight of the entire apparatus becomes large. And in order to circulate the necessary and sufficient temperature and quantity of circulating water in order to exhibit the corresponding heat exchange performance to the large-diameter radiation pipe with a large radiation area, the ability of the circulating water temperature control device must be increased. However, this also increases power consumption, and power saving cannot be expected.

  The present invention has been made to solve the conventional problems described above, and uses a flat plate heat exchanger that does not use electric power in which a heat conducting medium is sealed, and a heat exchanging means using natural energy. Therefore, an object of the present invention is to provide an efficient and economical air conditioning system that consumes as little power as possible.

The air conditioning system according to claim 1 is:
A flat plate type heat exchanger having a plurality of pipes in which a first heat exchange medium is sealed; and a heat transfer pipe attached to the flat plate type heat exchanger and through which a second heat exchange medium circulates, An air conditioning panel in which heat is exchanged between one heat exchange medium and the second heat exchange medium;
Primary heat exchange means using natural energy connected to the heat transfer pipe and performing heat exchange with the second heat exchange medium circulated from the air conditioning panel;
Secondary heat exchange means connected to the primary heat exchange means and adjusting the second heat exchange medium circulated from the primary heat exchange means to a temperature suitable for air conditioning by the air conditioning panel;
It is characterized by having.

The air conditioning system according to claim 2 is the air conditioning system according to claim 1,
A plurality of the flat plate heat exchangers are juxtaposed along a predetermined direction intersecting the pipe line, and the heat transfer pipes are in contact with the surfaces at both ends of the flat plate heat exchangers along the predetermined direction. The air conditioning panel is configured by mounting as described above.

The air conditioning system according to claim 3 is the air conditioning panel of the air conditioning system according to claim 2,
The heat transfer pipe has a pipe portion and a flange portion that are integrally formed,
The end portion of the flat plate type heat exchanger is fixed by being sandwiched from both sides by the flange portion and a fixing plate.

The air conditioning system according to claim 4 is the air conditioning panel of the air conditioning system according to claim 2,
The heat transfer pipe has a main body portion having an upper surface and a lower surface parallel to each other, and a pipe portion provided inside the main body portion,
The different ends of the flat plate heat exchanger are fixed to the upper surface and the lower surface of the main body.

The air conditioning system according to claim 5 is the air conditioning system according to any one of claims 1 to 4,
It is an air conditioning system for cooling provided with the primary heat exchange means using geothermal heat as natural energy.

The air conditioning system according to claim 6 is the air conditioning system according to any one of claims 1 to 4,
It is an air conditioning system for heating provided with the primary heat exchange means that uses solar heat as natural energy.

The air conditioning system according to claim 7 is the air conditioning system according to any one of claims 1 to 6,
A storage tank for storing the heat exchange medium is provided between the primary heat exchange means and the secondary heat exchange means.

  More specifically, the air conditioning system of the present invention includes an air conditioning panel having a flat plate heat exchanger in which a first heat exchange medium is enclosed, a primary heat exchange means, and a secondary heat exchange means, and a second heat exchange. It can be constituted by connecting with a circulation pipe through which circulating water as a medium circulates. At that time, as the primary heat exchange means, for example, heat exchange means using natural energy as a renewable energy such as underground heat, solar heat, groundwater heat, hot spring water heat, etc. can be used and adopted. In view of the nature of the heat source and the like, an air conditioning system suitable for cooling or heating can be obtained. In addition, as the secondary heat exchange means, a circulating water temperature adjusting device using electric power such as a commercially available heat pump can be used, and a circulation pump for circulating the circulating water is provided in the secondary heat exchange means. Also good. The operation of the air conditioning system of the present invention can be performed by a known system operation unit that adjusts the temperature and flow rate of circulating water.

  The air conditioning panel employed in the present invention circulates through the heat transfer pipe via the heat absorption function or the heat radiation function of a flat plate heat exchanger in which a first heat exchange medium is sealed in a pipe line built inside. This is a device capable of exchanging heat of the second heat exchange medium with heat in a living / production space (hereinafter referred to as air-conditioned space) to be air-conditioned, and this air-conditioning panel itself does not use electric power.

  And according to this invention, after adjusting the temperature by heat-exchanging the 2nd heat exchange medium heat-exchanged with the above air-conditioning panels with natural energy in a primary heat-exchange means, and also air-conditioning with an air-conditioning panel The temperature is readjusted by the secondary heat exchange means so that the temperature is suitable for the temperature. That is, the heat exchange medium whose temperature has been adjusted by the primary heat exchange means reduces the difference from the temperature suitable for air conditioning in the air conditioning panel, so the amount of power consumed for temperature adjustment in the secondary heat exchange means Is reduced accordingly. Therefore, if the air conditioning performance is the same, the power consumption used by the temperature control device of the secondary heat exchange means will be significantly reduced compared to the conventional radiant cooling and heating device, reducing the running cost of equipment and facilities. can do.

  Further, if a storage tank for storing the second heat exchange medium is provided between the primary heat exchange means and the secondary heat exchange means, the amount of the second heat exchange medium whose temperature is adjusted by the primary heat exchange means is checked, Excess and deficiency can be adjusted as necessary.

It is a typical lineblock diagram showing the air-conditioning system of a 1st embodiment. The partial view (a) is a front view of the air conditioning panel in the air conditioning system of the first embodiment, and the partial view (b) is a sectional view taken along the line AA of the partial view (a). It is sectional drawing in the front view of the flat plate type heat exchanger which comprises an air-conditioning panel in 1st Embodiment, and the BB cutting line and CC cutting line of a front view. A partial diagram (a) is an enlarged sectional view of an air conditioning panel in the air conditioning system of the first embodiment, and a partial diagram (b) is an enlarged sectional view of an air conditioning panel according to a modification. It is sectional drawing which shows the modification of the primary heat exchange means in the air conditioning system of 1st Embodiment. It is a top view which shows the modification of the primary heat exchange means in the air conditioning system of 1st Embodiment. It is a typical block diagram which shows the air conditioning system of 2nd Embodiment. It is sectional drawing which shows the air conditioning system of 3rd Embodiment. It is a typical top view which shows the air conditioning system of 3rd Embodiment. It is a front view which shows the air conditioning system of 4th Embodiment. It is a side view which shows the air conditioning system of 4th Embodiment. It is a top view which shows the air conditioning system of 4th Embodiment. It is a front view which shows the air conditioning system of 5th Embodiment. It is a side view which shows the air conditioning system of 5th Embodiment. It is a schematic plan view which shows the air conditioning system of 5th Embodiment. It is sectional drawing which shows the air conditioning system of 6th Embodiment. It is a schematic plan view which shows the air conditioning system of 6th Embodiment. The partial view (a) is a plan view of a flat plate type radiation cooling and heating device, and the partial view (b) is a sectional view taken along the line FF of the partial view (a). The partial view (b) is a front view of a stand-type radiant cooling and heating device, and the partial view (a) is a cross-sectional view taken along the line GG of the partial view (b).

1. First Embodiment A first embodiment of the present invention will be described with reference to FIGS.
Drawing 1 is a figure showing typically the whole air-conditioning system 1a composition of a 1st embodiment. For example, the air conditioning system 1a can be used as a cooling system that uses a relatively low temperature in the ground in a warm region.

The air-conditioning system 1a shown in FIG. 1 attaches a heat transfer pipe 3 to a flat plate heat exchanger 2 that does not require electric power, and circulates circulating water that is a second heat exchange medium in the heat transfer pipe 3 so that the flat plate heat An air conditioning panel 4 is provided that performs heat exchange between the exchanger 2 and the circulating water to air-condition the air-conditioned space. The heat transfer pipe 3 of the air conditioning panel 4 is connected to primary heat exchange means (vertical pipe type underground heat exchanger 5) using geothermal heat as natural energy, and the circulating water circulated from the air conditioning panel 4 The heat is exchanged by the primary heat exchange means. Further, the primary heat exchange means is connected to secondary heat exchange means (circulation water temperature adjusting device) using electric power as an energy source, and the circulating water circulated from the primary heat exchange means is suitable for air conditioning by the air conditioning panel 4. The temperature can be adjusted by the secondary heat exchange means so that the temperature is reached.
Hereinafter, the structure, operation, etc. will be described for each of the above components constituting the air conditioning system 1a.

  The air conditioning panel 4 will be described with reference to FIGS. The air conditioning panel 4 shown in FIG. 2 includes a flat plate heat exchanger 2 that is a high-efficiency heat exchange device that does not require electric power in order to exchange heat by vaporizing and condensing the first heat exchange medium. The flat plate heat exchanger 2 has an elongated rectangular thin plate shape and is arranged in contact with the width direction orthogonal to the longitudinal direction.

  As shown in FIG. 3, the flat plate heat exchanger 2, which is one unit constituting the air conditioning panel 4, is an aluminum plate, and the dimensions thereof are, for example, a width W of 60 mm to 90 mm and a length L. It is a thin plate having a thickness of 2000 mm and a thickness t of 5 mm or less, and a plurality of pipelines 11 are formed in the inside along the longitudinal direction at a predetermined interval in the width direction. The cross-sectional shape of the pipe line 11 may be circular or other shapes having a large inner surface area. Both ends of the pipe line 11 are closed, and inside each pipe line 11, a vaporized medium liquid as a first heat exchange medium that vaporizes in a range of about −100 ° C. to 170 ° C., for example, acetone or the like is sealed. ing. The flat plate heat exchanger 2 can conduct heat rapidly through the vaporized medium liquid sealed in the internal pipe line 11, and generally has an isothermal property of 1 ° C. to 2 ° C./m and maximum heat transport. It has functions such as a power of 400 W and an internal pressure capacity> 50 atm, and has a high-speed heat transfer function of 5000 to 8000 times compared to a solid aluminum plate of the same outer shape.

  As shown in FIG. 2 and FIG. 4 (a), the heat transfer pipe 3 is in contact with the surface of one side at both ends in the longitudinal direction of the flat plate heat exchangers 2 arranged along the width direction. Each is provided in parallel to the width direction. The heat transfer pipe 3 has a pipe portion 3a and a flange portion 3b which are integrally formed. The end portion of the flat plate heat exchanger 2 is sandwiched from both sides by the flange portion 3b and the fixing plate 12 and fixed with bolts or the like. By fixing with a tool, a large number of flat plate heat exchangers 2 are integrated. For this reason, the heat of the circulating water in the heat transfer pipe 3 is reliably transferred to the flat plate heat exchanger 2. The heat transfer pipe 3 having a round cross section in the air conditioning panel 4 is a dedicated component when only one side of the flat plate heat exchanger 2 is to be attached.

  In addition, as shown in FIG.4 (b), the shape of the heat-transfer pipe 3 can also select a square type other than the said round shape. As shown in FIG. 4 (b), the heat transfer pipe 13 of this modification has a main body portion 13b having an upper surface and a lower surface that are parallel to each other, a flat box shape in cross section, and a longitudinal shape in the direction perpendicular to the paper surface. It has a plurality of pipe portions 13a provided along the longitudinal direction inside the portion 13b. According to this rectangular heat transfer pipe 13, since it has a plurality of pipe portions 13 a that penetrate therethrough, the specific surface area that transfers the heat of the circulating water is large and the heat transfer efficiency is high. When attaching the heat transfer pipe 13 to the flat plate heat exchanger 2, the end portion of the flat plate heat exchanger 2 is sandwiched from both sides by the main body 13 a and the fixing plate 12 of the heat transfer pipe 13 and fixed by a fixture. In the example of FIG. 4B, since the flat plate heat exchanger 2 is attached only to the lower surface of the main body 13a, there are two radiation surfaces of the air conditioning panel 4, but the main body of the rectangular heat transfer pipe 13 is used. If the flat plate heat exchanger 2 is attached to the upper and lower surfaces of the part 13a, the radiation surface of the air conditioning panel 4 can be made to be four surfaces.

  As shown in FIG. 2, a plurality of flat plate heat exchangers 2 arranged in the width direction and sandwiched and joined by a heat transfer pipe 3 and a fixed plate 12 are mounted in a frame-shaped outer peripheral frame 14. The air conditioning panel 4 is configured. Specifically, the heat transfer pipe 3 is fixed to the outer peripheral frame 14 by a fixing means such as a screw (not shown) to constitute the air conditioning panel 4.

  In the example shown in FIG. 1, as described above, the heat transfer pipes 3 are provided at both ends in the longitudinal direction of the plurality of arranged flat plate heat exchangers 2 to constitute the air conditioning panel 4. A plurality of groups of the panel 4 can be connected by a pipe joint 15. FIG. 1 shows a state where two air conditioning panels 4 and 4 are connected. Thus, the air-conditioning panel 4 can arbitrarily expand and contract the area for heat dissipation and heat absorption according to the required performance. The pipe joint 15 connects the heat transfer pipes 3 and 3 of the two adjacent air conditioning panels 4 and 4 to enable continuous circulation of the circulating water, and the two adjacent air conditioning panels 4. , 4 are also mechanically integrated as a coupler. Since the configuration of the air-conditioning panel 4 is simple, the assembly process of connecting the air-conditioning panels 4 of the radix as required at the site with the pipe joint 15 is easy, and an economical and efficient construction can be performed.

  In the example shown in FIG. 1, in the two air-conditioning panels 4 and 4 connected, the path of the circulating water flowing through the heat transfer pipe 3 is a parallel system. That is, circulating water flows in from the two heat transfer pipes 3 and 3 of the upstream air conditioning panel 4 (left side in the figure), and the two heat transfer pipes 3 and 3 in the downstream air conditioning panel 4 (right side in the figure). Circulating water flows in from each upstream side, and the circulating water flows out from the downstream sides of the two heat transfer pipes 3, 3 of the air conditioning panel 4 on the downstream side. In addition, the path | route of the circulating water which flows through the heat-transfer pipe 3 may be a serial system. In that case, the circulating water flows into one heat transfer pipe 3 of the upstream air conditioning panel 4 and flows through one heat transfer pipe 3 of the downstream air conditioning panel 4 connected thereto, and further downstream air conditioning. It flows through the other heat transfer pipe 3 of the panel 4 and then flows out through the other heat transfer pipe 3 of the air conditioning panel 4 on the upstream side.

  In the above configuration, during cooling, cold water having a temperature lower than that of the air-conditioned space is circulated through the heat transfer pipe 3. The flat plate heat exchanger 2 of the air conditioning panel 4 absorbs the heat of the air-conditioned space and transfers it to the circulating water of the heat transfer pipe 3, so that the air-conditioned space is cooled. During heating, hot water having a temperature higher than that of the air-conditioned space is circulated through the heat transfer pipe 3. The flat plate heat exchanger 2 of the air conditioning panel 4 absorbs the heat of the circulating water of the heat transfer pipe 3 and transfers it to the air conditioned space, so that the air conditioned space is heated.

The primary heat exchange means will be described with reference to FIG.
The primary heat exchange means of this embodiment shown in FIG. 1 is a vertical pipe type underground heat exchanger 5 which is a renewable energy heat exchange device that does not use electric power. The vertical pipe type underground heat exchanger 5 is downstream of the air conditioning panel 4 in the flow path of the circulating water, and is connected to the circulating water pipe 7 connected to the heat transfer pipe 3. Exchange heat with circulating water. The vertical pipe type underground heat exchanger 5 is constituted by a plurality of double-pipe containers 18 including an outer cylinder 16 and an inner cylinder 17 arranged concentrically. The circulating water heat-exchanged by the air conditioning panel 4 enters the upper part of the inner cylinder 17 from the inlet 19 of the first double-pipe container 18, goes around its lower end, rises into the bottom part of the outer cylinder 16, From the water outlet 20 at the upper part of the outer cylinder 16, it passes through the communication pipe 21 and enters the upper part of the inner cylinder 17 from the water inlet 19 of another adjacent double pipe container 18. Hereinafter, the circulating water sequentially moves inside each double tube container 18 in the same flow as described above. The temperature of the circulating water exchanged by the air conditioning panel 4 is adjusted by exchanging heat with the underground heat during the time of circulation through the vertical pipe type underground heat exchanger 5.

  The vertical pipe-type underground heat exchanger 5 has an inner diameter of the outer cylinder 16 and the inner cylinder 17 larger than the cross section of the circulating water pipe 7 or a double pipe in order to obtain a necessary amount of heat exchange time for the circulating water. Although an appropriate number of containers 18 are installed, the number of the double pipe containers 18 may be only one as long as it has a capacity capable of securing the necessary amount and temperature of circulating water.

  The pipe type underground heat exchanger as the primary heat exchange means is not limited to the vertical type as shown in FIG. 1, but as shown in FIGS. 5 and 6, the heat exchange pipes are arranged in parallel in the ground. It may be a horizontal type. In this horizontal pipe type underground heat exchanger 5a, a plurality of heat exchange pipes 22 are arranged in parallel, and one end side of each heat exchange pipe 22 is connected to be an inlet side of circulating water. The other end sides of the two are connected to form the outlet side of the circulating water, and are buried in the ground at a necessary depth. In addition, as a primary heat exchange means using natural energy, a flexible pipe-type heat exchanger (not shown) that is put into a groundwater tank, a well, a pond, a river, or the like may be used. Furthermore, solar heat, underground water temperature, or hot spring water temperature can be used as a heat source of the renewable energy heat exchange device.

  As the heat source temperature of the primary heat exchange means is closer to the circulating water temperature suitable for air conditioning, the power consumption of the circulating water temperature adjusting device 6 of the secondary heat exchange means described later can be saved. As the heat source of the primary heat exchange means using renewable energy, underground heat and groundwater heat at temperatures lower than the air conditioning temperature are preferable during cooling, and solar hot water and hot spring water at temperatures higher than the air conditioning temperature are preferable during heating.

  However, the underground temperature and groundwater temperature, which are heat sources for renewable energy, vary depending on the region, for example, in the case of groundwater temperature, about 20 ° C to 24 ° C in Okinawa and about 18 ° C to 24 ° C in regions outside Okinawa Prefecture. The hot water temperature of the solar water heater is about 30 ° C to 60 ° C, and the hot spring water temperature is 25 ° C or higher.

  The temperature of the circulating water after the heat exchange by the primary heat exchanging means using such natural heat sources of various temperatures is adjusted to the circulating water temperature suitable for the air conditioning in a stable manner in the air conditioning panel 4. In order to provide, it is necessary to readjust in the circulating water temperature adjusting device 6 of the secondary heat exchange means mentioned later.

As shown in FIG. 1, the circulating water heat-exchanged by the vertical pipe type underground heat exchanger 5 is sent to a water storage tank 8 as a storage tank through a circulating water pipe 7. The water storage tank 8 has a function of automatically replenishing the amount of circulating water in the present system. A circulating water temperature adjusting device 6 as a secondary heat exchange means is connected to the downstream side of the water storage tank 8 through a circulating water pipe 7. The circulating water temperature adjusting device 6 includes a circulating water pump, and adjusts the circulating water circulated from the vertical pipe type underground heat exchanger 5 serving as the primary heat exchange means to a temperature suitable for air conditioning by the air conditioning panel 4. This is a device for sending out to the circulation system of the air conditioning system 1a, which is a heat pump sold in the general market and modified for adjusting the circulating water temperature. An operation unit 10 having a power source 9 is connected to the circulating water temperature adjusting device 6 so that the circulating water can be set to a temperature as required, and the circulating water amount can be arbitrarily set to a required amount. It has become. The downstream side of the circulating water of the circulating water temperature adjusting device 6 is connected to the most upstream side of the heat transfer pipe 3 of the air conditioning panel 4 via the circulating water pipe 7.
In addition, the circulating water pipe 7 in this apparatus 1a is providing the heat-shielding protection, the influence of outside temperature is reduced and the loss of circulating water temperature is suppressed as much as possible.

Next, the effect | action of the air conditioning system 1a of this embodiment demonstrated above is demonstrated.
According to the air conditioning system 1 a of the present invention, the circulating water circulates in the air conditioning system 1 a by the circulating water pump of the circulating water temperature adjusting device 6 and passes through the heat transfer pipe 3 provided in the air conditioning panel 4. Thereby, the heat of circulating water is heat-exchanged with the temperature of air-conditioning space via the 1st heat exchange medium of the flat plate type heat exchanger 2. The circulating water heat-exchanged in the flat plate heat exchanger 2 is heat-exchanged in the vertical pipe-type underground heat exchanger 5 as primary heat exchange means, and then stored in the water storage tank 8, and further secondary heat exchange means. In the circulating water temperature adjusting device 6, the heat is exchanged and adjusted to a temperature suitable for air conditioning. Then, the circulating water adjusted to a temperature suitable for air conditioning is continuously circulated through each device and facility again by the circulating water pump of the circulating water temperature adjusting device 6 as described above, thereby continuing air conditioning in the air-conditioned space. It will be done.

  When the air conditioning system 1a is used for cooling, at the beginning of operation, the circulating water temperature adjusting device 6 is operated with a sufficient load to lower the room temperature of the conditioned space to the target value in a relatively short time. Thereafter, it is preferable to operate in a constant state by reducing the load of the circulating water temperature adjusting device 6. In this case, since the cooling effect of the circulating water by the vertical pipe type underground heat exchanger 5 can be obtained, the temperature of the air-conditioned space that has once reached the target value can be reduced underground even if the power consumption in the circulating water temperature adjusting device 6 is reduced. Can be maintained by the effect of cold heat.

  Thus, the temperature of the circulating water whose temperature has been changed by the heat exchange with the air conditioning panel 4 is adjusted to some extent by exchanging heat using the renewable energy in the vertical pipe type underground heat exchanger 5. Therefore, the adjustment temperature difference of the circulating water performed using the electric power performed by the circulating water temperature adjusting device 6 is reduced, and the power consumption of the circulating water temperature adjusting device 6 is reduced.

2. Second Embodiment A second embodiment of the present invention will be described with reference to FIG.
FIG. 7 is a diagram schematically showing the overall configuration of the air conditioning system 1a of the second embodiment. For example, the air conditioning system 1b can be used as a heating system for a crop cultivation house using solar heat in a cold region.

  The air conditioning system 1b shown in FIG. 7 is provided with a solar water heater 25 as a primary heat exchange means using natural energy instead of the vertical pipe type underground heat exchanger 5 in the first embodiment described above. Since other configurations are the same as those of the first embodiment, description thereof is omitted. The solar water heater 25 is obtained by attaching a hot water pipe 27 to a large number of converged heat collecting pipes 26. The circulating water pipe 7 connected to the downstream side of the air conditioning panel 4 is connected to the upstream side of the hot water pipe 27 of the solar water heater 25, and the downstream side of the hot water pipe 27 is connected to the water storage tank 8. In addition, as shown as "warm water supply" in FIG. 7, the circulating water pipe 7 connected to the downstream side of the warm water pipe 27 may be branched so that a part of the warm water can be taken out and used for another purpose. Good.

  According to the present embodiment, the heat of the circulating water is absorbed by the flat plate heat exchanger 2 of the air conditioning panel 4 and is released into the air-conditioned space for heating. Then, the circulating water whose temperature has been reduced by heat exchange in the air conditioning panel 4 is heated by using the solar heat in the solar water heater 25 and is sent to the circulating water temperature adjusting device 6 after the temperature has risen to some extent. For this reason, since the temperature difference of the circulating water which should be sent to the air-conditioning panel 4 for heating again and the temperature of the circulating water heated and sent with solar heat becomes small, circulating water temperature heating apparatus 6 heats circulating water. Therefore, less power is consumed.

3. 3rd Embodiment The air conditioning system 1c as a ceiling installation type | formula air conditioning apparatus which is 3rd Embodiment is demonstrated with reference to FIG.8 and FIG.9.
The basic configuration of the air conditioning system 1c of the present embodiment is the same as that of the first embodiment. That is, the air conditioning system 1c includes an air conditioning panel 4 having a flat plate heat exchanger 2 and a heat transfer pipe 3, a vertical pipe type underground heat exchanger 5 which is a primary heat exchange means using natural energy, A tank 8 and a circulating water temperature adjusting device 6 as secondary heat exchange means are provided, and the circulating water is circulated through the circulating water pipe 7 between these components. However, the number of air conditioning panels 4 is five. 8 and 9, components corresponding to those of the other embodiments are denoted by the same reference numerals as those of the other embodiments, and the description of the other embodiments is used. Hereinafter, configurations unique to this embodiment are described. The explanation will be focused on.

  As shown in FIGS. 8 and 9, in the air conditioning system 1 c of this embodiment that is a ceiling-mounted cooling air conditioner, each air conditioning panel 4 is suspended from the ceiling 28 so as to be close to and parallel to the ceiling 28. It is installed suspended by a tool 29. During cooling, condensation may occur in the flat plate heat exchanger 2 due to the temperature difference and humidity between the circulating water temperature and the air-conditioned space. Therefore, a dew condensation water receiving plate 30 having a larger area than the air conditioning panel 4 is installed for each air conditioning panel 4 as a countermeasure for the dew condensation water treatment. The condensed water receiving plate 30 has a structure in which a drainage gradient is provided below each air-conditioning panel 4 with a hanging tool 31 and drained from the lower edge side. Specifically, the drainage pipe 32 is connected to the end of the condensed water receiving plate 30 below the gradient, and the condensed water is discharged to the outside.

  Although not shown in the drawings, as a structure for discharging condensed water, in addition to the above-described structure in which the condensed water receiving plate 30 is provided, the air conditioning panel 4 is inclined and suspended from the ceiling above the drainage gradient from which the condensed water flows out. May be installed and drained by attaching a gutter to the end of the flat plate heat exchanger 2 below the gradient.

  As shown in FIG. 9, in this embodiment, the flow of circulating water flowing into the heat transfer pipe 3 of each air conditioning panel 4 is a series system, but a parallel system may be used.

  In addition, when installing in a plant factory, an agricultural house, etc. where dripping of dew condensation water does not become an obstacle, the dew condensation water draining means such as the dew condensation water receiving plate 30 and the above-described dredging may be omitted.

4). 4th Embodiment The air conditioning system 1d as a stand type air-conditioning air conditioning apparatus which is 4th Embodiment is demonstrated with reference to FIGS.
The basic configuration of the air conditioning system 1d of the present embodiment is the same as that of the first embodiment. That is, the air conditioning system 1d includes an air conditioning panel 4 having a flat plate heat exchanger 2 and a heat transfer pipe 3, primary heat exchange means using natural energy (for example, a vertical pipe type underground heat exchanger 5), A water storage tank 8 and a circulating water temperature adjusting device 6 as secondary heat exchange means are provided, and the circulating water is circulated through the circulating water pipe 7 between these components. However, in FIGS. 10-12, only the part of the air-conditioning panel 4 is shown in figure, About the component equivalent to other embodiment, illustration is abbreviate | omitted and the description of other embodiment shall be used.

  The air-conditioning panel 4 of the air-conditioning system 1d of this embodiment has a structure similar to that of the modification of the first embodiment provided with the rectangular heat transfer pipe 13 shown in FIG. is there. That is, in the structure of FIG. 4 (b), one flat plate heat exchanger 2 is attached to one side of the rectangular heat transfer pipe 13, and the two sides are used as radiation surfaces. By attaching flat plate heat exchangers 2 and 2 to the upper and lower surfaces of the main body portion 13a of the rectangular heat transfer pipe 13 and sandwiching the main body portion 13a, and fixing with a fixing means such as a screw penetrating the main body portion 13a, Two air-conditioning panels 4 provide four radiation surfaces.

  10-12, the air conditioning panel 4 of the air conditioning system 1d of this embodiment is attached to the outer peripheral frame 14, and the four radiation surfaces of each air conditioning panel 4 are in the vertical direction (up and down direction). Are set up and fixed in the dew condensation water receiving tray 33 so as to be parallel to each other. Thus, since the air conditioning system 1d of this embodiment uses the air conditioning panel 4 while standing on the installation surface, it is referred to as a stand type as described above. The stand type is installed at the center of the air-conditioned space floor or near the wall surface. Therefore, the radiation surface of the flat plate heat exchanger 2 has many opportunities to receive artificial contact. For protection, the radiation surface in the outer peripheral frame 14 is covered with an aluminum plate (not shown). In addition, the drainage pipe 32 is connected to the dew condensation water receiving tray 33 so that the dew condensation water generated during cooling can be discharged to the outside.

  When the air conditioning system 1d of the present embodiment shown in FIGS. 10 to 12 is used as a cooling device, circulating water (cold water) sent from the circulating water temperature adjusting device 6 is introduced from one end of the upper heat transfer pipe 3, and the upper side Circulating water is circulated from the other end of the heat transfer pipe 3 to the other end of the lower heat transfer pipe 3 through the connecting pipe 34, and the circulating water is discharged from one end of the lower heat transfer pipe 3 to generate primary heat. Return to exchange means. In the case of a heating device, on the contrary, circulating water (hot water) is introduced from the lower circulating water temperature heat transfer pipe 3, and the circulating water is discharged from the upper heat transfer pipe 3 in the opposite direction to the cooling. Return to heat exchange means.

5). 5th Embodiment The air-conditioning system 1e as a stand type air-conditioning air conditioning apparatus which is 5th Embodiment is demonstrated using FIGS.
The basic configuration of the air conditioning system 1e of this embodiment is the same as that of the first embodiment. That is, this air conditioning system 1e includes an air conditioning panel 4 having a flat plate heat exchanger 2 and a heat transfer pipe 3, a vertical pipe type underground heat exchanger 5 which is a primary heat exchange means using natural energy, A tank 8 and a circulating water temperature adjusting device 6 as secondary heat exchange means are provided, and the circulating water is circulated through the circulating water pipe 7 between these components. However, the number of the air-conditioning panels 4 is one or two as shown in FIG. 13 (the W type of the modified example shown in FIG. 15), and the installation mode is not suspended from the ceiling but installed on the floor 35. And has a dew condensation water tray 33. Moreover, the air-conditioning panel 4 is the same structure as 1st Embodiment shown to Fig.4 (a), as shown in FIG. In FIGS. 13 to 15, components corresponding to those of the other embodiments are denoted by the same reference numerals as those of the other embodiments, and descriptions of the other embodiments are incorporated.

  As shown in FIG. 15, the stand-type cooling / heating air conditioner of this embodiment can be installed on the floor surface 35 of the air-conditioned space along the wall surface 36 of the air-conditioned space. Moreover, the stand type air conditioning apparatus of this embodiment differs from the ceiling installation type cooling air conditioner of 3rd Embodiment (FIG.8 and FIG.9), and the heat transfer pipe 13 of the type shown in FIG.4 (b) and FIG. It is possible to adopt a structure in which two flat plate heat exchangers 2 are attached on both sides of the plate, and the radiation surface of the flat plate heat exchanger 2 is four. Therefore, since it can also be installed at the center of the floor surface 35 away from the wall surface 36 of the air-conditioned space, it is also suitable for air conditioning in an air-conditioned space having a relatively large floor area. Moreover, this stand-type air conditioning air conditioner can be utilized also as a dehumidifier.

6). Sixth Embodiment An air conditioning system 1f as a floor-embedded heating apparatus according to a sixth embodiment will be described with reference to FIGS.
The basic configuration of the air conditioning system 1f of the present embodiment is the same as that of the first embodiment. That is, the air conditioning system 1f includes an air conditioning panel 4 having a flat plate heat exchanger 2 and a heat transfer pipe 3, a vertical pipe type underground heat exchanger 5 which is a primary heat exchange means using natural energy, A tank and a circulating water temperature adjusting device 6 as secondary heat exchange means are provided, and the circulating water is circulated through the circulating water pipe 7 between these components. However, the number of the air conditioning panels 4 is one, and the installation mode is not hung from the ceiling, but a recess 40 having a depth corresponding to the thickness of the air conditioning panel 4 is provided on the floor surface 35 as shown in FIG. It is an embedded type in which the air-conditioning panel 4 is horizontally installed in the recess 40 with the heat transfer pipe 3 facing down, and the opening of the recess 40 is covered with a covering flooring 41. Further, a filler 42 is filled between the air conditioning panel 4 and the bottom of the recess 40 to stabilize the arrangement state of the air conditioning panel 4. The air conditioning panel 4 has the same structure as that of the first embodiment shown in FIG. In FIG.16 and FIG.17, about the component corresponding to other embodiment, the code | symbol same as other embodiment is attached | subjected and description of other embodiment is used.

  According to the floor-embedded heating device of the present embodiment, the air conditioning panel 4 is disposed horizontally with the heat transfer pipe 3 on the lower side, so that the entire surface on one side of the flat plate heat exchanger 2 is the radiation surface. As shown in FIG. Therefore, the heat of the circulating water is efficiently transmitted from the floor surface 35 to the conditioned space via the flat plate heat exchanger 2.

  As described above, according to the air conditioning systems 1a to 1f of the embodiments of the present invention, the primary heat exchange means 5 effectively uses renewable energy that can be employed according to regional characteristics, such as groundwater, solar heat, and hot spring water. Therefore, the amount of power consumed by the secondary heat exchange means 6 can be reduced, and effective air conditioning can be performed economically. For example, when heating in a cold region, circulating water whose temperature has been lowered by heat exchange at the air conditioning panel 4 is circulated through the solar water heater 25 or hot spring water heat exchanger and heated and stored in the water storage tank 8. Thus, the amount of power used by the circulating water temperature adjusting device 6 can be reduced. There are no particular restrictions on the space that is subject to air conditioning, and all living and production activity spaces are covered. For example, in addition to ordinary living rooms and offices in homes, computer server rooms, agricultural houses, plant factories, temporary prefabricated houses Etc. can be air-conditioned economically.

7). Example An example of power consumption reduction when air conditioning is performed by the air conditioning system of the embodiment will be described.
1. Conditioned space is surrounded by the walls of the concrete structure, floor area 32m ^2, 30% of the wall area 59.3m ² (17.8) is a window. However, direct sunlight should not be inserted into the floor.
2. The outside air temperature during air conditioning is a maximum of 32 ° C., and the air conditioning set temperature of the air conditioned space is 27 ° C.
3. The amount of heat in the target air-conditioned space, that is, the amount of radiant heat and the amount of convection varies depending on conditions such as the floor area, wall structure, height of the air-conditioned space, window area, direct sunlight amount, and outside air temperature. Therefore, in this description, prior radiant heat amount survey data and the like are cited, and the radiant heat amount and convective heat amount of the air-conditioned space are assumed to be 100 w per unit floor area.
Therefore, the amount of heat exchange performed by the air conditioning panel during cooling and heating needs to be at least 32 m ² × 100 w≈3200 w in the entire target air conditioning space.
4). An example is the air-conditioning system 1e described in the fifth embodiment, and the heat radiation area of one unit (air-conditioning panel 4) is 1.2 m wide × 2.0 m × 2 (surface) = 4.8 m ^2. It is. Two air-conditioning panels shall be installed in the air-conditioned space.
5). The flow rate of the circulating water pipe of the air conditioning panel is set to 23 liters / minute.
6). In the air-conditioning space, according to the conventional fan coil type air conditioner, the outside air temperature is adjusted to the air conditioning temperature by the outdoor unit.
7). The air conditioning system of the present invention adjusts the air conditioning temperature by radiating the circulating water heat amount of the air conditioning panel to the air conditioning space. At this time, the smaller the amount of temperature adjustment performed by the temperature adjustment device 6 of the secondary heat exchange means, the more energy saving is achieved than the conventional air conditioning panel.
8). As described above, the amount of radiant heat and convective heat after the initial operation varies depending on various conditions, and thus the circulating water temperature is automatically adjusted to an appropriate temperature by the operation unit of the secondary temperature adjusting device.

  During cooling, the flat plate heat exchanger 2 absorbs heat from the air-conditioned space and transfers it to the circulating water in the heat transfer pipe 3. That is, the heat of the circulating water and the heat of the air-conditioned space are exchanged in the air-conditioned space. As a result, the temperature of the circulating water increases and the temperature of the air-conditioned space decreases. During heating, the flat plate heat exchanger 2 radiates the heat of the circulating water in the heat transfer pipe 3 to the air-conditioned space. At that time, the heat of the circulating water and the heat of the air-conditioned space are exchanged in the air-conditioned space. That is, the circulating water temperature decreases and the temperature of the air-conditioned space increases.

In the above, in the circulating water and the air-conditioned space, heat exchange is performed at the panel 4 with respect to a temperature difference of 2 ° C. (difference between the circulating water inlet temperature of the panel 4 and the circulating water outlet temperature) per flow rate of 23 liters / minute. . The amount of heat is 23 liters × 2 ° C. × 4180 (specific heat) / 60 seconds≈3200 W.
This satisfies the air-conditioning condition that the air-conditioning heat amount necessary for heat exchange of the air-conditioned space 32 m ² is 3200 w (32 m ² × 100 w / m ² ≈3200 w) or more.
The circulating water temperature adjusting device 6 has no fan coil that consumes power compared to the fan coil type air conditioner that is a conventional air conditioner, and further reduces the temperature difference of the secondary temperature adjustment by the primary temperature adjustment in natural energy. Therefore, power consumption can be reduced.

  Regarding the circulating water temperature difference 2 ° C. (temperature difference between the inlet and outlet of the panel 4) at a flow rate of 23 liters / minute in the circulating water temperature adjusting device 6, the assumed power consumption for the circulating water temperature adjusting device 6 to adjust the temperature is It is about 10 kWH or less per 12 hours from the circulation water temperature adjusting device power specifications.

  Under the environmental conditions described above, the power of the air conditioning system (the amount of power consumed by the compressor, fan coil, and circulation pump) is 1200 W (system equipment specifications) in the temperature adjustment of 2 ° C. performed by the conventional fan coil air conditioner. To) degree. At this time, the assumed power consumption of the air conditioning system is about 14 kWh per 12 hours.

  Therefore, the air conditioning system 1e of the present invention is economical because it can reduce 4 kWh per 12 hours as compared with the conventional air conditioner.

DESCRIPTION OF SYMBOLS 1a, 1b, 1c, 1d, 1e, 1f ... Air conditioning system 2 ... Flat plate heat exchanger 3 ... Heat transfer pipe 3a ... Pipe part 3b ... Flange part 4 ... Air conditioning panel 5 ... Vertical pipe type as a primary heat exchange means Underground heat exchanger 5a ... Horizontal pipe type underground heat exchanger as primary heat exchange means 6 ... Circulating water temperature adjusting device as secondary heat exchange means 8 ... Reservoir tank as storage tank 11 ... Pipe line 12 ... Fixed plate 13 ... Heat transfer pipe 13a ... Body part 13b ... Pipe part 25 ... Solar water heater as primary heat exchange means

Claims (7)

A flat plate type heat exchanger having a plurality of pipes in which a first heat exchange medium is sealed; and a heat transfer pipe attached to the flat plate type heat exchanger and through which a second heat exchange medium circulates, An air conditioning panel in which heat is exchanged between one heat exchange medium and the second heat exchange medium;
Primary heat exchange means using natural energy connected to the heat transfer pipe and performing heat exchange with the second heat exchange medium circulated from the air conditioning panel;
Secondary heat exchange means connected to the primary heat exchange means and adjusting the second heat exchange medium circulated from the primary heat exchange means to a temperature suitable for air conditioning by the air conditioning panel;
An air conditioning system comprising: The air conditioning panel includes a plurality of the flat plate heat exchangers arranged in parallel along a predetermined direction intersecting the pipe line, and the heat transfer pipes at both ends of the flat plate heat exchangers along the predetermined direction. The air conditioning system according to claim 1, wherein the air conditioning system is configured to be in contact with each of the surfaces. In the air conditioning panel,
The heat transfer pipe has a pipe portion and a flange portion that are integrally formed,
The air conditioning system according to claim 2, wherein the end portion of the flat plate heat exchanger is fixed by being sandwiched from both sides by the flange portion and a fixing plate. In the air conditioning panel,
The heat transfer pipe has a main body portion having an upper surface and a lower surface parallel to each other, and a pipe portion provided inside the main body portion,
The air conditioning system according to claim 2, wherein the end portions of the flat plate type heat exchangers are fixed to the upper surface and the lower surface of the main body. The air conditioning system according to any one of claims 1 to 4, wherein the air conditioning system is a cooling air conditioning system including the primary heat exchange means that uses geothermal heat as natural energy. The air conditioning system according to any one of claims 1 to 4, wherein the air conditioning system is a heating air conditioning system including the primary heat exchange unit that uses solar heat as natural energy. The air conditioning system according to any one of claims 1 to 6, wherein a storage tank for storing the heat exchange medium is provided between the primary heat exchange means and the secondary heat exchange means.

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