JP3240453B2 - Large air-conditioning glass window - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a large-sized air-conditioned glass window, and more particularly to a large-sized air-conditioned glass window having an external load processing function in a perimeter.

[0002]

2. Description of the Related Art In general, in a space having a large glass window such as a hotel lobby where a feeling of openness and a view of a resident is particularly required, it is required to treat an external load which affects a heat load during air conditioning. . Conventionally, a window system shown in FIG. 5 has been known as a large air-conditioning glass window for processing an external load in a perimeter (“Architectural Magazine” Vol. 1).
08, No. 1340 1993 48-49). This window system is used for building 3
1 is a large-sized glass window having a double-glazed structure composed of sheet glasses 33 and 34 on the outdoor side and the indoor side mounted on the opening 32 of the vehicle. A suction slit 37 is provided, and a duct 38 and a fan 39 are provided above the window. The external load caused by the solar radiation is processed by controlling the opening and closing of the automatic control blind 36 in accordance with the amount of the external solar radiation and by passing the conditioned air in the room through the hollow layer 35 by the fan 39 in the ceiling.

[0003]

However, in the conventional large-sized air-conditioning glass window, since the external load caused by the sunlight is processed by the conditioned air in the room, the adjustment of the load processing amount can only be performed by changing the air flow. When the area is large, there is a problem that the load processing becomes difficult. Further, since the external load is processed by a one-way air flow from the lower part to the upper part of the hollow layer, only a heat transfer amount proportional to the window area can be obtained, and the heat transfer efficiency is low. Furthermore, since indoor air-conditioned air is used, there is a problem that the inside of the hollow layer needs to be cleaned. Therefore, an object of the present invention is to provide a large-sized air-conditioned glass window capable of performing a load process with a large window area, significantly improving heat transfer efficiency, and eliminating the need to clean the inside of a hollow layer. I do.

[0004]

In order to solve the above-mentioned problems, a large-sized air-conditioning glass window according to the present invention is provided with an air-conditioning device which communicates with a hollow layer on the outdoor side below a large-sized glass window having a double-layered triple glass structure. An air conditioner having an air outlet and a suction port communicating with a hollow layer on the indoor side is provided, and a chamber box communicating the two hollow layers is provided above the large glass window. It is preferable that the sheet glass on the outdoor side is a heat-absorbing anti-glass, and the sheet glass on the middle and indoor sides is a heat-absorbing glass.

[0005]

In the large-sized air-conditioning glass window of the present invention, the temperature and air volume of the conditioned air can be adjusted, and the conditioned air is circulated from the air conditioner through the outdoor hollow layer, the chamber box, and the indoor hollow layer. I do. As an air conditioner,
One or more fan coil units are used.

[0006]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a side sectional view showing one embodiment of a large air-conditioning glass window of the present invention. This large air-conditioning glass window has three sheet glasses 3, 4 on the outdoor side, the middle side and the indoor side attached to the large opening 2 of the building 1 at required equal intervals.
5 and a large-sized glass window 8 having a double-layer, triple-glass structure comprising two hollow layers 6, 7 on the outdoor side and on the indoor side formed by these plate glasses 3, 4, 5. The glass sheet 3 on the outdoor side of the large glass window 8 is a heat absorbing and anti-glass, and the glass sheets 4 and 5 on the middle and indoor sides are:
It is a heat absorbing glass. An air conditioner 9 including one to several fan coil units and the like is integrally provided below the large glass window 8, and an air-conditioned air outlet 11 having a slit 10 in the air conditioner 9 is provided. The air-tightly communicating with the hollow layer 6 on the outdoor side, and the air-tightly communicating with the suction port 13 provided with the slit 12 and the hollow layer 7 on the indoor side. On the other hand, above the large glass window 8, a chamber box 14 that integrally communicates the hollow layers 6 and 7 on the outdoor side and the indoor side with airtightness is provided integrally.

In the large-sized air-conditioning glass window having the above structure, when the solar load is to be treated during cooling, a required amount of conditioned air cooled to a required temperature is blown out from the conditioned air outlet 11 of the air conditioner 9 and FIG. As shown by the white arrows in FIG. 3, the air is sucked into the suction port 13 through the hollow layer 6 on the outdoor side, the chamber box 14 and the hollow layer 7 on the indoor side and circulated, and is absorbed by the respective glass sheets 3, 4, and 5 by solar radiation. Discharge the heat generated. Thereby, the cooling load due to the solar radiation can be significantly reduced. At the time of heating, in order to prevent condensation and cold draft, a required amount of conditioned air heated to a required temperature is blown out from the conditioned air outlet 11 of the air conditioner 9 and circulated in the same manner.

Hereinafter, the external load processing performance of the large air-conditioning glass window due to the solar radiation will be described with reference to FIGS. First, the specifications (representative characters) of the large air-conditioning glass window are shown. de; hollow layer equivalent diameter (4 · s / l) ( m) s; hollow layer cross-sectional area (m ²⁾ l; hollow layer outer peripheral length (m) u _m; airflow average speed (main flow rate) (m / h) tav; average temperature in the hollow layer (° C.) ρ; air density at tav (kg / m ³ ) Cp; constant pressure specific heat at tav (Kcal / kg ° C.) ν; kinematic viscosity coefficient at tav (m ² / h) λ; thermal conductivity at (Kcal / mh ℃) Pr; Prandtl number in tav (dimensionless) Q; load by solar radiation (Kcal / h) P; units radiation heat amount (Kcal / hm ²⁾ Δt; indoor and outdoor temperature difference (℃) μ; total heat transmission coefficient of sheet glass 3, 4, 5 (Kcal / hm ² ° C) L; glass window height (m) W; glass window width (m) The following physical quantities are defined by the above specifications. . _{Re = u m de / ν ...........................} (1) Num = 0.023 × Re 0.8 × Pr 0.4 ........................... (2) ( where, Re> 10 ^4, tw = const, 0.7 <Pr <120) α m = 2.81 (u m ρ) 0.8 / de 0.2 ........................... (3) ( where, 1atm, 0 ℃ <(t 1 + t 2) / 2 < 100
° C.) when the transfer heat to _{q, q = Sρu m Cp (} t 2 -t 1) ........................... (4) the difference between the average temperature of the air wall temperature tm and the section 2L logarithmic mean Assuming that the temperature difference is Δte, Δte = (t ₂ −t ₁ ) / ln ｛(t _w −t ₁ ) / (t _w −t ₂ )｝ (5) Also, the expression (4) is logarithmic. Using the heat transfer coefficient α _m based on the average temperature difference Δte, q = α _m A △ te... (6) (where A = 2LW) The load Q due to solar radiation is Q = A ′ × (P + △ t′μ)... (7) Now, for each parameter, assuming as follows, when obtaining the heat transfer efficiency and load processing efficiency in the large air-conditioning glass window, de = 4 × s / l = 0.39 (m) u m = 1.4 (m / sec) = 5040 (m / h) (t ₁ + t ₂ ) / 2 ρ = 1.161 (kg / m ³ ) Cp = 0.24 (Kcal / kg ° C.) ν = 5.54 × 10 ^-2 (m ² / h) λ = 0.022 (Kcal / mh ℃) Pr = 0.704 tw = 35 (℃) t 1 = 21 (℃) t 2 = 26 (℃) L = 12 (m) W = 6 (m) μ = 5 (Kcal / hm ² ° C.) P = 120 (Kcal / hm ² ) Δt = 9 (° C.) From the equation (4), the heat transfer q is: q = 8.426 (Kcal / h) From the equation (6), the heat transfer shown above is obtained. The glass window height L 'required to obtain is: 2L' = q (W × α _m × △ te) (6) ′ (3), (5), (6) ′ From the equations, L ′ = 12.4 ( m) Therefore, the heat transfer efficiency is as follows. Heat transfer efficiency = 2LW / 2L'W × 100 = 96.8 (%) On the other hand, the load due to solar radiation is as follows from equation (7). Q = 11.880 (Kcal / h) Therefore, the load processing efficiency is as follows. q / Q × 0.968 = 0.69 Therefore, it can be understood that about 70% of the load due to solar radiation can be processed.

[0008]

As described above, according to the large-sized air-conditioning window glass of the present invention, the temperature and air volume of the conditioned air can be adjusted, so that the load processing with a larger window area can be performed as compared with the conventional case. it can. Further, since the conditioned air circulates from the air conditioner through the outdoor-side hollow layer, the chamber box and the indoor-side hollow layer, the heat transfer amount of the conditioned air is twice as large as the window area, and the heat transfer efficiency is greatly improved. While being able to
Cleaning of the inside of the hollow layer can be made unnecessary.

[Brief description of the drawings]

FIG. 1 is a side sectional view showing one embodiment of a large air-conditioning glass window of the present invention.

FIG. 2 is a plan sectional view illustrating the operation of the large-sized air-conditioning glass window of FIG.

FIG. 3 is a front sectional view for explaining the operation of the large air-conditioning glass window of FIG.

FIG. 4 is a side sectional view for explaining the operation of the large air conditioning glass window of FIG.

FIG. 5 is a side sectional view of a conventional window system.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Building 2 Opening 3 Sheet glass 4 Sheet glass 5 Sheet glass 6 Hollow layer 7 Hollow layer 8 Large-sized glass window 9 Air conditioner 11 Air-conditioning air outlet 13 Suction port 14 Chamber box

Claims (2)

(57) [Claims] 1. An air conditioner having an air-conditioned air outlet communicating with an outdoor-side hollow layer and a suction port communicating with an indoor-side hollow layer below a large-sized glass window having a double-layer triple-glass structure. A large air-conditioning glass window, wherein a chamber box is provided above the large glass window to communicate both hollow layers. 2. The large-sized air-conditioning glass window according to claim 1, wherein the outdoor side glass sheet is a heat absorbing and anti-glass, and the intermediate and indoor side glass sheets are a heat absorbing glass.