JP6512658B2 - Radiant air conditioning system - Google Patents

Description

  BACKGROUND OF THE INVENTION Field of the Invention The present invention relates to a radiation air conditioning system for air conditioning an indoor space by radiating heat.

  Generally, an air conditioner for making the temperature and humidity environment of the indoor space comfortable blows out and convects conditioned air to the indoor space. According to such an air jet type air conditioner, an air flow may be generated in the indoor space, and the air flow may be uncomfortable because the air flow directly hits the human body. Also, for example, in cooling, the sensational temperature is said to decrease 3 ° C. at a wind speed of 0.5 m. Therefore, in recent years, a radiant air conditioning system in which an unpleasant feeling of air flow and a vertical temperature distribution in indoor space are less likely to occur has attracted attention.

  FIG. 7 shows the prior art of this type of radiation air conditioning system. That is, the radiant air conditioning system shown in FIG. 7 forms an under-the-ceiling space 104 on the back side of the ceiling material 101 whose upper and side portions are appropriately insulated and sealed by the heat insulating material 102. The cooling air or the heating air A from 103 is supplied, and the indoor space 105 is cooled and heated by heat radiation from the ceiling material 101 (see Patent Document 1 below).

そして放射空調システムは、式（１）におけるｔ_２を調整することによって適正な体感温度を得ようとするものであり、空調空気を室内空間へ噴き出す一般的な空気噴流式の空調システムと比較して、空気を攪拌する必要がないので、不快な気流感や空調騒音が少なく、室内の空気温度自体は、冬は低めに、夏は高めに抑えられるので、窓を通した熱漏れや換気によるエネルギーロスが少なくなり、さらには空気温度の設定が抑えられるため、冬の相対湿度は高めに、夏の相対湿度は低めにシフトし、快適な湿度環境が形成されるといった利点があり、就寝中の人や低代謝の人に適した空調システムである。 Here, the perceived temperature of a human can be approximately expressed by the following formula (1).

The radiation air conditioning system is intended to obtain an appropriate sensible temperature by adjusting t ₂ in the equation (1), and is compared with a general air jet type air conditioning system that blows conditioned air into the indoor space. Because there is no need to agitate the air, there is less unpleasant air flow and air conditioning noise, and the indoor air temperature itself is kept low in winter and high in summer, so heat leakage through the windows and ventilation Since energy loss is reduced and the setting of air temperature is suppressed, there is an advantage that the relative humidity in winter is increased, the relative humidity in summer is shifted to lower, and a comfortable humidity environment is formed. This air conditioning system is suitable for people with low metabolism and people with low metabolism.

JP-A-5-149586

  However, since the radiation air conditioning system according to the prior art shown in FIG. 7 installs the air conditioner 103, the heat insulating material 102, the piping, etc. in the ceiling space 104, the construction and maintenance work is done in the ceiling space. And the height of the space under the ceiling 104 needs to be high to some extent. In addition, if the ceiling space 104 is not heated or cooled to a certain extent, radiation from the ceiling material 101 to the indoor space 105 is not performed, and rising of the air conditioning and heating is bad, which makes the indoor space 105 a comfortable space for a long time There was a concern that

  Moreover, in the case of the cooling operation, the surface temperature of the ceiling material 101 becomes low temperature in the vicinity of the outlet of the pipe, and in the case of the heating operation, the temperature gradient is such that the surface temperature of the ceiling material 101 becomes high in the vicinity of the outlet of the pipe. As a result, the difference in the amount of heat radiation from the ceiling material 101 to the indoor space 105 becomes large due to such a temperature gradient, which may cause temperature unevenness.

  The present invention has been made in view of the above-described points, and the technical problem thereof is to provide a radiation air conditioning system which is easy to install, is excellent in rising of heating and cooling, and is less likely to cause temperature unevenness. It is.

Radiation air-conditioning system according to the invention 請 Motomeko 1, a radiation panel that forms the air conditioner blows conditioned air from the air-conditioned air ejection port takes in air in the indoor space, the air passage in communication with the conditioned air spout, The heat insulation panel is disposed on the opposite side to the radiation panel across the air path, and is formed in a flat box shape and installed on the lower surface of the ceiling plate, and the lower portion facing the indoor space is from the radiation panel The upper part facing the ceiling plate on the opposite side is the heat insulation panel, and the case where the upstream end of the air passage is communicated with the conditioned air jet and the downstream end is opened to the indoor space, And a radiation gradation means provided on the radiation panel for reducing the difference in the radiation amount of heat to the indoor space on the upstream side and the downstream side of the air passage .

Radiation air-conditioning system having the above structure, the operating state of the air conditioner, in the process of conditioned air blown from the air-conditioning air jet port of the air conditioner (cooling air or heating air) passes through the air passage, the radiation panel It is cooled or heated by heat exchange with the conditioned air, and radiation cooling is performed by radiating heat to the indoor space with a radiation intensity corresponding to the surface temperature. Further, the cooling air appropriately heated by heat exchange with the radiation panel or the heated air appropriately cooled flows out to the indoor space from the downstream end of the air passage, and the air in the indoor space is temperature-controlled by convection. It performs indoor convection cooling and heating to compensate for the radiation heating and cooling effects. Then, in the case of the cooling operation, the cooling air in the air passage becomes lower temperature toward the upstream side and becomes higher temperature toward the downstream side, and in the heating operation, the heating air in the air passage becomes higher temperature toward the upstream side and lower temperature toward the downstream side Although such a temperature gradient is produced, the radiation gradation means provided on the radiation panel alleviates the difference in the radiation amount of heat to the indoor space due to such a temperature gradient, and mitigates the temperature unevenness due to radiation cooling and heating. Since the radiation panel and the heat insulation panel are unitized in a case-like manner, handling and installation work at the time of construction can be facilitated. Moreover, since the heat insulation can be suppressed by the heat insulation panel, the radiation cooling and heating efficiency by the radiation panel can be enhanced.

  In the radiation air conditioning system according to the second aspect of the present invention, in the configuration described in the first aspect, the radiation gradation means is configured such that the thermal resistance of the radiation panel is large on the upstream side of the air path and small on the downstream side of the air path. The material is changed.

  That is, the heat resistance of the radiation panel on the upstream side of the air passage is large, thereby suppressing the heat transfer to the surface facing the indoor space side, and the heat resistance of the radiation panel on the downstream side of the air passage is small. Since heat transfer to the surface facing the space side is promoted, the difference in the radiation amount of heat on the indoor space side due to the temperature gradient in the air passage is alleviated.

In the radiation air conditioning system according to the invention of claim 3, in the configuration described in claim 1 , the radiation gradation means may make the thickness of the radiation panel thicker upstream of the air passage and thinner downstream of the air passage. It is a change.

  That is, due to the thick wall of the radiation panel on the upstream side of the air passage, heat transfer to the surface facing the indoor space side is suppressed, and on the downstream side of the air passage, the wall thickness of the radiation panel is thin Since heat transfer to the surface facing the space side is promoted, the difference in the radiation amount of heat on the indoor space side due to the temperature gradient in the air passage is alleviated.

Radiation air-conditioning system according to the invention of claim 4, in the configuration described in claim 1, radial gradation means comprises a number of irregularities formed on the surface of the air passage side of the radiation panel, wind the density of the unevenness It is changed so as to be low on the upstream side of the road and high on the downstream side of the air path.
In the radiation air conditioning system according to the invention of claim 5, in the configuration described in claim 1, the radiation gradation means comprises a large number of irregularities formed on the surface on the indoor space side of the radiation panel, and the density of the irregularities is It is changed so as to be low on the upstream side of the road and high on the downstream side of the air path.

  That is, since the surface area of the unit area of the radiation panel is reduced on the upstream side of the air passage due to the low density of the irregularities formed on the radiation panel, heat radiation is suppressed, and the density of the irregularities is high on the downstream side of the air passage As a result, the surface area of the unit area of the radiation panel is increased to promote thermal radiation, thereby reducing the difference in the radiation amount of heat on the indoor space side due to the temperature gradient in the air passage.

In the radiation air conditioning system according to the invention of claim 6, in the configuration described in any one of claims 1 to 5, the radiation panel is made of a porous material or a fiber material having moisture permeability.

  That is, since the radiation panel cooled by the conditioned air (cooling air) passing through the conditioned air distribution space during the cooling operation has moisture permeability, it is possible to prevent condensation from being generated in the radiation panel.

In the radiation air conditioning system according to the invention of claim 7, in the configuration described in any one of claims 1 to 5, the radiation panel is made of a latent heat storage material.

  If the radiation panel is made of a latent heat storage material, it is difficult for the surface temperature of the radiation panel to change rapidly when the air conditioning operation is turned on and off, and temperature non-uniformity due to time change of the indoor space can be suppressed.

  According to the radiation air conditioning system according to the present invention, since it is not necessary to install the air conditioner in the space behind the ceiling, and the air conditioner and the radiation panel can be unitized, installation can be easily performed. In addition, since the convective cooling and heating by air conditioning air flowing out to the indoor space from the downstream end of the air path is complemented by the radiation cooling and heating by the radiation panel, the rising of the air conditioning effect is improved and the radiation from the radiation panel of the case is Since it is equalized, temperature nonuniformity due to radiation cooling and heating can be alleviated and comfort can be improved.

It is a perspective view showing a first embodiment of a radiation air conditioning system concerning the present invention. It is a sectional view showing a first embodiment of a radiation air conditioning system concerning the present invention. It is a sectional view showing a second embodiment of a radiation air conditioning system concerning the present invention. It is a sectional view showing a third embodiment of a radiation air conditioning system concerning the present invention. It is a sectional view showing a 4th embodiment of a radiation air conditioning system concerning the present invention. It is a diagram which shows the characteristic at the time of using a latent heat storage material for a radiation | emission panel. It is a longitudinal section showing roughly an example of the conventional radiation air conditioning system.

  Hereinafter, a preferred embodiment of a radiation air conditioning system according to the present invention will be described with reference to the drawings. First, FIG. 1 and FIG. 2 show a first embodiment, and reference numeral 1 is an indoor space, 11 is a ceiling plate which defines the indoor space 1, 12 is a wall surface, and 13 is a floor surface.

  Reference numeral 2 is a radiation air conditioning system, which is installed on the lower surface of the ceiling plate 11 through an appropriate fixture 24 and takes in the air of the indoor space 1 and blows out the air conditioning air; It has a hollow case 22 connected to the spout 211 a to form a horizontal air passage 23. The case 22 can be thin in the dimension (thickness) in the height direction of around 100 mm or less.

  The air conditioner 21 in the radiation air conditioning system 2 includes an indoor unit 211 installed on the lower surface of the ceiling plate 11 and an outdoor unit 212 installed outdoors, and heat medium fluid is provided between the indoor unit 211 and the outdoor unit 212. The heat pump function is to carry heat by circulating through the pipe 213 while causing a reversible change in the liquid phase and the gas phase. Then, the indoor unit 211 takes in the air in the indoor space 1 and cools or heats it by heat absorption or heat radiation accompanying the phase change of the heat transfer fluid, and blows out the cooled or heated air from the conditioned air jet port 211a. It has become.

  The case 22 in the radiation air conditioning system 2 is formed in a horizontally flat box shape and is installed on the lower surface of the ceiling plate 11, and the lower portion facing the indoor space 1 is composed of the radiation panel 221, and the opposite side An upper portion facing the ceiling plate 11 is a heat insulation panel 222. The air passage 23 between the radiation panel 221 and the heat insulating panel 222 is formed in a flat gap shape narrow in the vertical direction and wide in the horizontal direction, and the upstream end 23 a of the air passage 23 is the indoor unit 211 of the air conditioner 21. The downstream end 23 b is open to the indoor space 1 while communicating with the conditioned air jet port 211 a.

  For the radiation panel 221, a thin-walled porous material having preferably low thermal resistance (high thermal conductivity) and moisture permeability, a fiber board of glass fibers, or Japanese paper is preferably employed. In the case of a film-like product such as Japanese paper, it is stretched around an appropriate frame and used. Further, as the heat insulating panel 222, a foamed resin heat insulating material such as urethane is suitably adopted.

The radiation panel 221 is provided with radiation gradation means for reducing the difference in the radiation amount of heat to the indoor space 1 on the upstream end 23 a side and the downstream end 23 b side of the air passage 23. The thermal resistance of the radiation panel 221 is relatively large (for example, 5.0 × 10 ^{−5 to} 0.15 m ² K / W) in the portion 221 a located on the upstream side (the indoor unit 211 side) of the air passage 23. Change the material continuously so that it becomes relatively small (for example, 1.0 × 10 ^{−5 to} 0.03 m ² K / W) in the portion 221 b located on the downstream side of 23 (the opposite side to the indoor unit 211) It is

In the radiation air conditioning system 2 configured as described above, when cooling is performed in summer, cooling air from the indoor unit 211 of the air conditioner 21 is operated when the air conditioner 21 is caused to perform cooling operation by an operation such as a remote controller (not shown). Are sent to the air passage 23 in the case 22. Then, while the cooling air passes through the air passage 23, the rear panel (upper surface) of the radiation panel 221 of the case 22 is abraded to exchange heat with the radiation panel 221, that is, the radiation panel 221 is cooled. Because of this, t ₂ in the equation (1) described above decreases, and radiation TR of cold heat from the surface (lower surface) of the radiation panel 221 to the indoor space 1 is performed. In this case, the radiation intensity of the heat (infrared radiation) from the cooled radiation panel 221 is extremely low in practice, so the heat radiated from the human body surface or the like is cooled. The cold sensation is felt by being absorbed without being reflected by the surface of the light source, but for the sake of convenience, the cold sensation due to the radiation TR from the radiation panel 221 is felt here for convenience.

  On the other hand, the cooling air appropriately heated by heat exchange with the radiation panel 221 flows out from the downstream end 23 b of the air passage 23 into the indoor space 1 and descends the indoor space 1 by convection. Since the flow of the cooling air is appropriately heated by heat exchange with the radiation panel 221 as described above, in addition to being decelerated by diffusion or friction in the air passage 23, the descent speed by indoor convection The downdraft is generated along the wall 12 from the periphery of the radiation panel 221. For this reason, an unpleasant feeling of air flow is suppressed, and for example, a user who is in a recumbent position feels a cold feeling mainly due to the radiation TR from the radiation panel 221.

  Further, the air conditioner 21 takes in the air in the indoor space 1 to cool and dehumidify, so the amount of water vapor in the indoor space 1 decreases. Specifically, when the air in the indoor space 1 is taken into the indoor unit 211 of the air conditioner 21 and cooled, the water vapor contained in the air is saturated and condensed, and is liquefied and discharged to the outside, so The cooling air supplied to the air passage 23 has low humidity. In addition, since the radiation panel 221 has moisture permeability, it is possible to prevent condensation from being generated on the lower surface of the radiation panel 221 by being cooled by the cooling air passing through the air passage 23. It is also possible to prevent the deterioration of the radiant cooling efficiency due to

Further, in addition to the fact that the entire space behind the ceiling does not need to be cooled as in the conventional radiant air conditioning system shown in FIG. 7, the cooling air having passed through the air passage 23 flows out to the upper part of the indoor space 1, The rise of radiant cooling is improved, and a comfortable environment can be achieved in a short time. Furthermore, since t ₂ in the equation (1) decreases, the room temperature (the temperature t ₁ of the air in the equation (1)) can be set higher compared to a general convection type (air jet type) air conditioning system For this reason, for example, the temperature difference with the outside air when ventilating by opening a window becomes small, and the heat loss can be suppressed to a small, and as a result, it can contribute to energy saving.

  Here, since the cooling air in the air passage 23 gradually warms up by heat exchange with the radiation panel 221 in the process toward the downstream end 23 b, the surface temperature of the radiation panel 221 is also relatively measured in the portion 221 a near the indoor unit 211. The radiation panel 221 is set to have a relatively large thermal resistance at the upstream portion 221a of the air passage 23, so the surface (bottom surface) The temperature gradient is relaxed, which in turn reduces the difference in heat radiation due to the temperature gradient. Therefore, the radiation TR to the indoor space 1 is made uniform, and the unevenness of the feeling of cold can be eliminated to improve the comfort.

Next, when heating is performed in winter, when the user causes the air conditioner 21 to perform heating operation by operating the remote controller (not shown) or the like, first, the heated air from the indoor unit 211 of the air conditioner 21 flows in the air passage 23 in the case 22. Sent to Then, while the heated air passes through the air passage 23, the heat exchange with the radiation panel 221 is performed by rubbing the back surface (upper surface) of the radiation panel 221 of the case 22, that is, the radiation panel 221 is heated. Because of this, t ₂ in the equation (1) described above becomes high, and the radiation TR of heat from the surface (lower surface) of the radiation panel 221 to the indoor space 1 is performed.

  On the other hand, the heated air appropriately cooled by heat exchange with the radiation panel 221 flows out from the downstream end 23b of the air passage 23 into the indoor space 1, and stays in the upper part of the indoor space 1 (region higher than the height of human) . For this reason, the discomfort due to the upper and lower temperature distribution difference and the air flow in the living space of the human being is suppressed, and for example, the user in the lying position feels the warm feeling mainly due to the radiation TR from the radiation panel 221.

And since it is not necessary to heat the whole space of a ceiling floor like the conventional radiant air conditioning system shown in FIG. 7, the badness of a standup of radiant heating is improved and it can be set as a comfortable environment in a short time. Furthermore, in order to raise t ₂ in equation (1), the room temperature (temperature t ₁ of air in equation (1)) may be set lower compared to a general convection type (air jet type) air conditioning system it can. Moreover, since the heated air flowing out of the air passage 23 stays in the upper part of the indoor space 1 and the air in the lower part of the indoor space 1 has a relatively low temperature, for example, the temperature with the outside air when ventilating by opening the window The difference is reduced and the heat loss is also suppressed to a low level, and as a result, it can contribute to energy saving.

  Here, the temperature of the heated air in the air passage 23 gradually decreases due to the heat exchange with the radiation panel 221 in the process toward the downstream end 23 b, so the surface temperature of the radiation panel 221 is also a portion 221 a close to the indoor unit 211. The radiation panel 221 is set so that the thermal resistance is relatively large at the upstream portion 221a of the air passage 23, so the surface of the radiation panel 221 becomes relatively high temperature. The temperature gradient of the (lower surface) is alleviated, which in turn reduces the difference in the amount of heat radiation due to the temperature gradient. Therefore, temperature nonuniformity due to radiant heating can be alleviated to improve comfort.

  Further, the indoor unit 211 and the case 22 of the air conditioner 21 are installed on the lower surface of the ceiling plate 11, and there is no need to install it on the ceiling as in the conventional case. It is possible. In addition, maintenance can be easily performed.

  And since the opposite side to radiation panel 221 in case 22 consists of heat insulation panel 222, the heat loss by the heat transfer to the ceiling board 11 side from the conditioned air (cooling air or heating air) which passes air path 23 is reduced . Therefore, the radiation efficiency from the radiation panel 221 to the indoor space 1 can be enhanced, and the temperature control efficiency by the conditioned air flowing out from the downstream end 23 b of the air passage 23 to the indoor space 1 can be enhanced.

  Further, since the radiation air conditioning system 2 is thin, it has a small sense of oppression due to being installed on the lower surface of the ceiling plate 11, and since it is lightweight, it can be safely attached.

  Next, FIG. 3 shows a second embodiment of the radiation air conditioning system according to the present invention. The difference between this embodiment and the first embodiment described above is that the radiation panel 221 is divided into a plurality of tiled segments 221c, and the upstream end 23a side of the air passage 23 (the indoor unit 211 side) In the segment located in the side, the material whose thermal resistance is relatively large is used, and the segment whose thermal resistance is relatively small toward the downstream end 23b side (opposite to the indoor unit 211) of the air passage 23 is used. By using, it is in the point which set the radiation gradation means which relieves the difference of the radiation amount of the heat | fever to the indoor space 1. FIG.

  Therefore, this second embodiment can also realize the same effect as the first embodiment.

  Next, FIG. 4 shows a third embodiment of the radiation air conditioning system according to the present invention. In this embodiment, different from the above-described embodiments, the thickness of the radiation panel 221 is changed so as to be thicker at the upstream end 23a side of the air passage 23 and thinner at the downstream end 23b side of the air passage 23. The point is that the radiation gradation means is set to reduce the difference of the radiation amount of heat to the indoor space 1. In this case, the thickness of the radiation panel 221 may be changed continuously, or may be changed stepwise by forming the radiation panel 221 by a plurality of segments having different thicknesses.

  That is, according to the third embodiment, the thickness of the radiation panel 221 on the upstream end 23a side of the air passage 23 increases the heat transfer from the back surface (upper surface) to the front surface (lower surface) of the radiation panel 221. Since the heat transfer is promoted by the thin thickness of the radiation panel on the downstream end 23 b side of the air passage 23, the difference in the radiation amount of heat due to the temperature gradient in the air passage 23 is alleviated. Therefore, temperature nonuniformity due to radiation cooling and heating can be alleviated to improve comfort.

  Next, FIG. 5 shows a fourth embodiment of the radiation air conditioning system according to the present invention. In this embodiment, the difference from the above-described embodiments is that the surface (upper surface) on the air path 23 side in the radiation panel 221 or the surface (lower surface) on the indoor space 1 side has a large number of concavities or convexities Both of them) 221 d are formed, and the density of the unevenness 221 d is changed to be low at the upstream end 23 a side of the air passage 23 and high at the downstream end 23 b of the air passage, so that heat to the indoor space 1 is generated. It is in the point which set the radiation gradation means which mitigates the difference of the radiation amount. In this case, the unevenness 221 d may be dimpled, raised, grooved, or latticed.

  According to the fourth embodiment, the surface area of the unit area of the radiation panel 221 is reduced due to the low density of the unevenness 221 d formed on the radiation panel 221 at the upstream end 23 a side of the air passage 23, so that the air passage 23 is formed. The heat received from the air or the heat radiation to the indoor space 1 is suppressed, and the density of the unevenness 221 d on the downstream end 23 b side of the air passage 23 is high, and the surface area of the unit area of the radiation panel 221 is increased. Since the heat reception or the heat radiation to the indoor space 1 is promoted, the difference in the radiation amount of heat due to the temperature gradient in the air passage 23 is alleviated. Therefore, temperature nonuniformity due to radiation cooling and heating can be alleviated to improve comfort.

  In addition, although it is preferable to employ the thing of the material which has moisture permeability as mentioned above in the environment which has concern of dew condensation at the time of cooling as the radiation panel 221, it is used in the environment maintained in a relatively dry state. If so, it is also possible to use a latent heat storage material (also called a phase change material (PCM)). When the latent heat storage material is used, it is possible to suppress the temperature drop over time of the surface temperature of the radiation panel due to the thermo-off of the air conditioner. Therefore, as shown in FIG. It is less susceptible to the influence of time and has the effect of suppressing unevenness in the surface temperature of the radiation panel. That is, when the latent heat storage material is used for the radiation panel, the surface temperature of the radiation panel hardly changes rapidly when the air conditioning operation is turned on and off, and it becomes possible to suppress the temperature non-uniformity due to the time change of the indoor space. And since it is difficult on the air conditioner side to control the heat off smoothly, it is useful in that it can be handled on the radiation panel side.

  In the embodiment described above, the indoor unit 211 of the air conditioner 21 and the hollow case 22 connected thereto are described as being installed on the lower surface of the ceiling plate 11, but may be attached to the wall surface 12.

DESCRIPTION OF SYMBOLS 1 indoor space 11 ceiling board 2 radiation air conditioning system 21 air conditioner 211 indoor unit 211a air conditioning air jet 22 case 221 radiation panel 222 heat insulation panel 23 air path 23a upstream end 23b downstream end 221c segment 221d unevenness

Claims (7)

An air conditioner that takes in the air in the indoor space and blows out the conditioned air from the conditioned air outlet ;
A radiation panel that forms the air passage in communication with the conditioned air spout,
A thermal insulation panel disposed opposite to the radiation panel with the air passage interposed therebetween;
It is formed in a flat box shape and installed on the lower surface of the ceiling plate, the lower portion facing the indoor space consists of the radiation panel, and the opposite upper portion facing the ceiling plate consists of the heat insulation panel A case in which the upstream end of the air passage is communicated with the conditioned air outlet and the downstream end is opened to the indoor space;
A radiation gradation means provided on the radiation panel, for alleviating the difference in the radiation amount of heat to the indoor space on the upstream side and the downstream side of the air path ;
Radiation air-conditioning system, characterized in that it comprises a.   The radiation air conditioning system according to claim 1, characterized in that the radiation gradation means is made of a material changed so that the thermal resistance of the radiation panel becomes large on the upstream side of the air passage and becomes small on the downstream side of the air passage. . The radiation air conditioning system according to claim 1, wherein the radiation gradation means changes the thickness of the radiation panel so as to be thick on the upstream side of the air passage and thin on the downstream side of the air passage. Radial gradation means comprises a number of irregularities formed on the surface of the air passage side of the radiation panel, in which the density of the irregularities is changed to be higher on the downstream side of the air passage lower on the upstream side of the air passage radiation air-conditioning system according to claim 1, characterized in that. The radiation gradation means comprises a large number of irregularities formed on the surface on the indoor space side of the radiation panel, and the density of the irregularities is changed so as to be low on the upstream side of the air passage and high on the downstream side of the air passage. radiation air-conditioning system according to claim 1, characterized in that. The radiation air conditioning system according to any one of claims 1 to 5, wherein the radiation panel is made of a porous material or a fiber material having moisture permeability. The radiation air conditioning system according to any one of claims 1 to 5, wherein the radiation panel is made of a latent heat storage material.

Images