JPS609220B2 - Air conditioning system for high ceiling spaces - Google Patents

Description

[Detailed description of the invention] The present invention relates to an air conditioning system for a high ceiling space.

More specifically, the present invention relates to an air conditioning system for air conditioning, especially heating, spaces in buildings with high ceilings, such as theaters, gymnasiums, airport lobbies, and factories. Generally, the air conditioning system for this kind of high-ceilinged space uses a single duct all-air system, in which cold and hot air is blown downward from the ceiling using a nozzle or diffuser, or laterally from the wall, or from the floor. It's blowing out upwards.

However, when performing air conditioning, the cold air accumulates in the residence due to its heavy specific gravity, so there is no need to cool the entire area of the high-ceilinged space, and air conditioning can be performed easily.On the other hand, when performing heating, Since warm air has a light specific gravity, it does not accumulate in the living area, but rises to the ceiling and heats the ceiling. This not only makes it impossible to effectively use the warm air blown out from the air outlet in the living area, but also prevents the ceiling from accumulating in the living area. This raised the temperature of the castle, increasing the temperature difference with the outside air temperature, and as a result, a large amount of heat was radiated to the outside air, which caused an uneconomical problem of increasing the heating load.

In addition, in order to raise the temperature of a residential castle, it is possible to increase the heat source energy, but in this case, the ceiling area will be heated to a higher temperature, which will further promote heat radiation from the ceiling area, and the temperature will increase. This increases the waste of tone.

However, in order to solve the above-mentioned problems, methods have been adopted, such as using a fan to suck high-temperature air from the ceiling and blowing it out into the residential area, or using a total heat exchanger to exchange heat with ventilation air. However, both require large ducts and fans, require extensive construction, are expensive in terms of equipment costs and operating costs, and are not able to fundamentally suppress heat radiation from the ceiling area. Therefore, the uneconomical effects of heat loss remain unsolved.

Therefore, the present invention was invented in view of the above-mentioned problems, and includes a refrigerator that is equipped with an air-to-air evaporator, an air-to-air condenser, a compressor, an expansion mechanism, etc., and a refrigeration cycle of the refrigerator that is separate from the An air conditioner for a high-ceiling space, comprising a heater equipped with a heat source of Air condensers are arranged and connected by cold soot piping to cool the ceiling area during heating to reduce the temperature difference with the outside air temperature, reduce the amount of heat radiated from the ceiling area, and reduce the amount of heat radiated from the ceiling area. By radiating the heat pumped up from the room into the living area, the heating load was reduced and heating operations became more economical. Embodiments of the present invention will be described in detail below based on the drawings.

In FIG. 1, reference numeral 1 denotes a building such as a factory with a high ceiling height (for example, about 20 cm), and a heating source 2 such as a heater is provided on the floor of the building.

This heating source 2 is capable of raising the temperature of the living space A in the building 1 to a predetermined temperature (for example, 20° C.),
The type is not limited.

Therefore, in the building 1 configured as described above, an air evaporator 3 is arranged near the ceiling in the upper part of the space, and an air air condenser 4 is arranged near the floor. 4 are connected by cold soot pipes 5 and 6, and a refrigeration cycle is formed by a compressor 7 interposed in the cold soot pipe 5 on the gas side and an expansion mechanism 8 interposed in the medium drinking pipe 6 on the liquid side.

By driving the compressor 7 in this way, the ceiling space B is cooled, and as shown by the dotted line in Figure 2, the maximum temperature is 3.
Lower the temperature of ceiling space B, which becomes 0qo, to 10-15qC as shown by the solid line in Figure 2 to reduce the temperature difference with the outside air.
This reduces the amount of heat that escapes with the outside air, and the heat pumped up by cooling the ceiling space B is transferred to the condenser 4.
Heat is radiated to the living space A by this. As described above, during heating, the amount of heat radiated from the ceiling castle B can be reduced, so the heating load can be reduced, and most of the heating energy from the heating source 2 can be used for the living area A, thereby reducing energy consumption. It is possible to do so.

As shown by the dotted line in FIG. 1, a bypass pipe 10 is provided between the liquid side soot pipe 6 and the low pressure gas pipe 51 of the gas side medium pipe 5 in the refrigeration cycle, and a bypass pipe 10 is provided between the high pressure gas pipe 52 and the liquid side soot pipe 6 in the refrigeration cycle. A water-cooled condenser 13 is provided which is connected to the cooling tower 14 via branch pipes 11 and 12, and a solenoid valve (not shown) that closes during heating is provided in the bypass pipe 10 and branch pipe 11, and the high-pressure gas pipe 52 is A solenoid valve (not shown) that closes during cooling is interposed between the connection points of the two branch pipes 11 and 12, and an expansion valve (not shown) is interposed in the branch pipe 12 to create the condenser described above. 4 can be used as an evaporator for cooling.

Also, as this cooling method, the cooling tower 14 is used as described above.
In addition to using the water-cooled condenser 13, an air-cooled condenser may also be used. As described above, the present invention cools the ceiling area during heating, lowers the temperature at the ceiling castle, reduces the temperature difference between it and the outside air, and reduces the amount of heat escaping from the ceiling castle to the outside air, thereby reducing the heating load. Furthermore, since the heat from the hot air that rises to the ceiling is pumped up and radiated to the living area, only the living area can be heated, and even if the ceiling height is high, the energy consumption for heating is reduced compared to conventional methods. About 25-30
This makes it possible to operate economically with a reduction in fuel consumption by 20%.

Furthermore, since a refrigeration cycle is constructed between the evaporator in the ceiling area and the condenser in the living area, it is different from the conventional system that uses ducts and fans to move hot air from the ceiling area to the living area. , equipment costs can be reduced, and operating costs can also be reduced.

[Brief explanation of the drawing]

FIG. 1 is a schematic diagram showing an embodiment of the present invention, and FIG. 2 is a temperature diagram showing the relationship between height from the floor and temperature. 1...Building, 2...Heating source, 3...
・Evaporator for air, 4... Condenser for air, 5, 6
...Soot piping, A...Living castle space, B...
...Ceiling castle space. Figure 1 Figure 2

Claims (1)

[Claims] 1 Air evaporator 3, air condenser 4, compressor 7,
This is an air conditioner for a high-ceilinged space, consisting of a refrigerator equipped with an expansion mechanism 8, etc., and a heater 2 equipped with a heating source different from the refrigeration cycle of the refrigerator, and the heater is located near the floor. 2
while placing the air evaporator 3 near the ceiling,
The air condensers 4 are arranged near the floor and connected by refrigerant pipes 5 and 6, and during heating, the ceiling area is cooled to reduce the temperature difference with the outside air temperature, and the amount of heat radiated from the ceiling area is reduced. An air conditioner for a high ceiling space, which is characterized by reducing the amount of heat pumped up from the ceiling area and dissipating the heat into the living area.