JPH0673808A - Dew condensation accelerating system for ground surface or building wall face - Google Patents

Abstract

PURPOSE:To control remarkable rise in the temperature of the ground surface and of the wall surface of a building during the daytime by accelerating the occurrence of dew condensation on a condensation face such as the ground surface and the wall face of a building. CONSTITUTION:A plurality of temperature sensors 4, 4... are provided on a condensation face 3 such as the ground surface 1 and the wall face 2A of a building 2, and detecting signals for temperatures detected by the temperature sensors 4, 4... are inputted into a control means 5 to compare with the dew point of the atmosphere. In the case where the temperature of the condensation face 3 is highrt than the dew point of the atmosphere even when three or four hours elapses after sunset, the control means 5 outputs starting signal to a spray device 60 and an artificial waterfall device 61 to cool the ground surface 2 and the wall face 2A. These temperatures are lowered below the dew point of the atmosphere to condense aqueous vapor in the atmosphere.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention promotes dew condensation on the ground surface of public facilities such as parks and the wall surfaces of buildings at night, thereby suppressing a significant rise in the temperature of the ground surface and the wall surfaces of buildings during the daytime. The present invention relates to a dew condensation promoting system on a surface or a building wall surface.

[0002]

2. Description of the Related Art When the temperature of the ground surface of a public facility such as a park or the wall surface of a building falls below the dew condensation temperature of the atmosphere at night, water vapor in the atmosphere will not condense on the ground surface or the wall surface of a building. well known. As described above, when the ground surface or the wall surface of the building is condensed, the latent heat of evaporation of the condensed water can suppress a significant increase in the temperature of the ground surface and the wall surface of the building in the daytime. However, conventionally, the above-mentioned dew condensation is left as it is left to a natural phenomenon. Therefore, on tropical nights when the temperature of the ground surface or the wall surface of the building does not fall below the dew point temperature of the atmosphere, it is not possible to expect condensation on the ground surface or the wall surface of the building, and the temperature of the ground surface and the wall surface of the building during the daytime. It is also not possible to suppress a significant increase in
In this way, if it is left to be left as it is due to a natural phenomenon, if the suppression of a remarkable rise in the daytime is hindered, it leads to excessive operation of the air conditioning equipment and the like, and the consumption of energy such as electric power and gas is increased.

[0003]

The problem to be solved is that it is impossible to expect dew condensation at night when the temperature of the ground surface or the wall surface of a building does not fall below the dew point temperature of the atmosphere. It is not possible to suppress a significant rise in the wall temperature of the building, which leads to excessive operation of air conditioning equipment and the like, and increases the consumption of energy such as electric power and gas.

[0004]

The present invention detects a nighttime temperature by installing a temperature sensor on a dew condensation surface such as the ground surface or a building wall surface. This detected temperature is input to the control means. On the other hand, the humidity and temperature in the atmosphere are detected by a sensor, the dew point temperature is calculated by the control means and compared with the detected temperature,
When the temperature of the dew condensation surface after a lapse of a predetermined time is higher than the dew point temperature of the atmosphere, the cooling medium discharge signal is output from the control means to the cooling medium discharge means to discharge the cooling medium to the dew condensation surface.
The present invention is characterized in that the temperature of the dew condensation surface is lowered below the dew point temperature of the atmosphere to cause dew condensation, and the object of accelerating the dew condensation on the dew condensation surface and suppressing a remarkable rise in the surface temperature of the ground surface and the wall surface of the building in the daytime is achieved.

[0005]

According to the present invention, the cooling discharged from the cooling medium discharging means to the dew condensation surface even at night when the temperature of the dew condensation surface does not become lower than the dew point temperature of the atmosphere if left as it is according to a natural phenomenon. The medium can lower the temperature of the dew condensation surface to a temperature not higher than the dew point temperature of the atmosphere to surely cause dew condensation.

[0006]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a schematic configuration diagram of an embodiment. In this figure, a plurality of temperature sensors 4, 4, ... Are installed on a dew condensation surface 3 such as a ground surface 1 of a public facility or a wall surface 2A of a building 2, and these temperature sensors are arranged. The temperature detection signals detected by 4, 4, ... Are input to the control means 5. The control means 5 includes
The dew point temperature of the atmosphere is input in advance, and the temperature sensor 4,
4. The detected temperature of the dew condensation surface 3 inputted from 4 ... is compared with the dew point temperature of the atmosphere, and a predetermined time (for example, 3 to 4 after sunset).
After the elapse of time), if the temperature of the dew condensation surface 3 is higher than the dew point temperature of the atmosphere, the control means 5 outputs a cooling medium discharge signal to the cooling medium discharge means 6. The cooling medium discharge means 6 is a fountain device 6 installed on the ground surface 1.
0 and the artificial waterfall device 6 installed on the roof of the building 2, for example.
1, the fountain device 60 includes a pump 60A and a dancing fountain nozzle 60B, and the cooling water having a function as a cooling medium is ejected from the dancing fountain nozzle 60B by operating the pump 60A.
On the other hand, the artificial waterfall device 61 includes a pump 61A and a water storage unit 61B, and when the pump 61A is operated, cooling water having a function as a cooling medium is supplied from the overflow bank 61C to the wall surface 2 of the building 2.
It is designed to drop along A.

With such a configuration, the temperature of the dew condensation surface 3 such as the ground surface 1 and the wall surface 2A of the building 2 is measured by the temperature sensors 4, 4, ...
Is detected by ... And the temperature detection signal is input to the control means 5. The temperature of the dew condensation surface 3 input to the control means 5 is compared with the dew point temperature of the atmosphere calculated in advance by the control means 5. Even after a lapse of a predetermined time (for example, 3 to 4 hours) after sunset, the temperature of the dew condensation surface 3 such as the ground surface 1 and the wall surface 2A of the building 2 is higher than the dew point temperature of the atmosphere, and it can be expected that dew condensation will occur. If so, for example, the control means 5
By the operation of the timer (not shown) built into
The control means 5 outputs a start signal to the pump 60A of the fountain device 60 and the pump 61A of the artificial waterfall device 61 to start the pumps 60A and 61A, respectively. As a result, the cooling water is sprayed from the dancing fountain nozzle 60B onto the ground surface 1 to cool the ground surface 1, and the temperature of the ground surface 1 is lowered to the dew point temperature of the atmosphere or lower, so that the water vapor in the atmosphere is transferred to the ground surface 1. Allow condensation. Therefore, due to the latent heat of vaporization of the condensed water, it is possible to suppress a significant temperature rise on the ground surface 1 in the daytime. Since the jet angle θ of the cooling water discharged from the dancing fountain nozzle 60B can be freely changed, it is possible to effectively spray water over a wide range. On the other hand, artificial waterfall device 6
When the pump 61A of No. 1 is activated, the amount of cooling water in the water storage portion 61B increases, and over time it falls along the wall surface 2A of the building 2 beyond the overflow bank 61C, cooling the wall surface 2A and cooling the wall surface 2A.
The temperature is reduced to a temperature equal to or lower than the dew point temperature of the atmosphere, and water vapor in the atmosphere is condensed on the wall surface 2A. Therefore, due to the latent heat of vaporization of the condensed water, it is possible to suppress a remarkable temperature rise of the wall surface 2A in the daytime.

In the above embodiment, as the cooling medium discharging means 6 corresponding to the ground surface 1, the dancing fountain nozzle 6 is used.
Although the fountain device 60 equipped with 0B is used for the description,
A fountain device 60 including a normal fountain nozzle may be used instead of the dancing fountain nozzle 60B. However, by using the dancing fountain nozzle 60, the ejection angle of the fountain can be arbitrarily adjusted, so that the ground surface 1 in a wide range can be lowered to the dew point temperature or lower. In addition, the water storage section 61B
In the description, the cooling medium discharge means 6 is configured by the artificial waterfall device 61 configured to drop the stored water from the overflow bank 61C along the wall surface 2A of the building 2, but for example, the discharge port of the pump 61A has a shower. An artificial waterfall device 61 configured to connect a negative-shaped water discharge pipe and to drop the cooling water discharged from the shower-shaped water discharge pipe along the wall surface 2A of the building 2.
May be used. On the other hand, as the cooling medium discharging means 6,
Instead of the fountain device 60 or the artificial waterfall device 61 described above, a fog generator can be used to achieve the same effect as that of the above embodiment. On the other hand, by constructing the wall surface 2A of the building 2 with a material having excellent water retention property, it is possible to enhance the water retention function of the dew condensation water, and thus to further enhance the temperature rise suppressing effect of the evaporation latent heat of the dew condensation water. You can

[0009]

As described above, according to the present invention, even if the temperature of the dew condensation surface does not become lower than the dew point temperature of the atmosphere if left unattended by a natural phenomenon, the cooling medium discharging means can be used. The cooling medium discharged to the dew condensation surface lowers the temperature of the dew condensation surface to below the dew point temperature of the atmosphere to ensure dew condensation.Therefore, evaporation latent heat of the dew condensation water suppresses a significant temperature rise on the dew condensation surface in the daytime. It becomes possible to do.

[Brief description of drawings]

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

[Explanation of symbols]

 1 Ground surface 2 Building 2A Building wall surface 3 Condensation surface 4 Temperature sensor 5 Control means 6 Cooling medium discharging means

Claims (1)

[Claims] 1. A temperature sensor is installed on a dew surface such as a ground surface or a wall surface of a building to detect a nighttime temperature, and the detected temperature is input to a control unit to be previously input to the control unit. Compared with the temperature, when the temperature of the dew condensation surface after a lapse of a predetermined time is higher than the dew point temperature of the atmosphere, the control means outputs a cooling medium discharge signal to the cooling medium discharge means to discharge the cooling medium to the dew condensation surface. A condensation promoting system for a ground surface, a building wall surface, or the like, characterized in that the temperature of the condensation surface is reduced to a temperature equal to or lower than the dew point temperature of the atmosphere for condensation.