JPH0233934B2 - KUTAINETSUBAIFUKUSHAREIBOSOCHI - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial Field of Application) The present invention relates to a framework heat transfer medium radiation cooling device having functions of cooling and dehumidifying a building.

(Prior Art) There have been many proposals regarding air conditioning in buildings.

However, many of these air conditioners use air as a heat medium to cool and heat, circulate the room, and achieve air conditioning through convection effects.Due to the difference in specific gravity of the air, warm air flows to the ceiling and cold air flows to the floor. Collects on the surface. In both summer and winter, the opposite situation of cold head and warm feet occurs, which has negative consequences for the human body.

The indoor dehumidification method using air heating medium air conditioning method is as follows:
It supplies cold air to absorb indoor moisture, returns it to the air conditioner, and condenses the moisture in the indoor air. In order to do this, the temperature of the cooling heat source water should be kept below 8℃, and the temperature should be kept indoors.
The room was dehumidified by circulating large amounts of cold air around 15 degrees Celsius.

Therefore, the indoor environment tends to become overcooled in order to obtain a dehumidifying effect, leading to the occurrence of air conditioning disease.

(Problems to be Solved by the Invention) This invention solves the above-mentioned problems, namely, the undesirable situation in which warm air accumulates in the upper part and cold air accumulates in the lower part in an air conditioner, and the undesirable state of overcooling that occurs when obtaining a dehumidifying effect. This is an attempt to resolve the situation with a new proposal.

[Structure of the invention]

(Means for Solving Problems) A new proposal in this invention is to bury a cooling coil such as a resin pipe in the concrete slab or cinder concrete part of the building frame, and to circulate cold water through this cooling coil. Ceiling cooling suction
The present invention provides a building frame heat medium radiation cooling device comprising a part that cools the heat radiation surface and cools the room by absorbing heat generated from the room and the human body, and a part that performs independent dehumidification to remove latent heat from the room. .

In more detail, the cooling coil 2 is attached to the building frame 1.
is buried, and cold water is circulated through this cooling coil 2 to cool the ceiling cooling air intake/radiation surface, giving a radiant cooling effect to the indoor thermal environment 7, and drying the humid indoor air by passing it through the dehumidifier 8. A good thermal environment is maintained by providing a framework heat transfer radiation cooling device in which air 6 is created, and this air 6 is sent out at room temperature or below by removing heat radiation into the room by an aftercooler 12. It is something.

(Function) This invention does not use air as a direct heat medium, but instead uses the concrete slab or cinder concrete frame of the building structure as a heat medium, which acts as a heat absorber and radiator during cooling. Because it is cool, it creates a good thermal environment that keeps your head cold and your feet warm. Furthermore, since an aftercooler is used to remove the heat radiated into the room from the dehumidifier, the heat radiated from the air sent out is removed, creating a good indoor environment.

(Example) Next, an example of the present invention will be described based on the drawings.

Reference numeral 1 indicates the building frame, and 2 indicates a cooling coil. In this embodiment, the frame 1 is made of a concrete slab or cinder concrete, and the cooling coil 2 is a resin-based cross-linked polyethylene pipe, with an inner diameter of 16 m/m and an outer diameter of 20 m/m.
It consists of m/m. The cooling coil 2 is embedded in the frame 1 to circulate cold water. The lower surface 3 of the frame 2 is a ceiling cooling heat absorption/radiation surface during cooling, and the upper surface 4 is a floor heating heat radiation surface during heating.

8 is an electric dehumidifier installed indoors, and is equipped with an evaporator 9, a condenser 10, and a compressor 11.

12 is an aftercooler newly attached to the dehumidifier 8, and has a new function not included in conventional dehumidifiers. The functions of the aftercooler are as follows. When the dehumidifier is operated, the compression heat of the compressor is radiated into the room. Therefore,
The temperature inside the room increases due to the dehumidifier. A cooling coil is installed near the compressor in order to remove the heat radiated from the compressor in a room that is being ceiling-cooled. This is the aftercooler. The heat source for the aftercooler is used by connecting the ceiling cooling coil to the aftercooler cooling coil and circulating the return water from the ceiling cooling coil.

However, to cool the room, proceed as follows.

First, cold water is circulated through the cooling coil 2 embedded in the frame 1. When the cold water circulates, the frame 1 is cooled, and the ceiling cooling absorption/radiation surface 3 absorbs heat generated from the room and the human body, thereby cooling the room and radiating the cold air.

Next, dehumidification is performed using a dehumidifier 8 that removes latent heat from the room. Humid air 5 containing latent heat generated indoors enters the evaporator 9 of the dehumidifier 8, the indoor air is cooled and moisture is condensed, and the gas heat medium is condensed and compressed by the compressor 11. Then, the heat radiated from the compressor 11 is removed by the aftercooler 12 attached to the heat radiating portion of the compressor 11.

A concrete explanation of this is as follows.

First, during the daytime in summer, for example, from 9 a.m. to 5 p.m., the dehumidifier 8 is not operated and the cooling coil 2 is turned on.
Cold water at 18℃ (13-A for heat pump heat source, 13 for well water heat source, return water is about 20℃...14, 14-
When A) is circulated, the temperature of the ceiling cooling absorption/radiation surface 3 is 22℃.
The indoor air 7, which is a mixture of heat radiated from the ceiling and dry air sent out from the dehumidifier, gradually becomes around 26℃, but the humidity eventually decreases.
When it reaches 80% or more, water droplets will eventually adhere to the ceiling cooling air absorption/radiation surface 3, making cooling impossible. Next, if only the dehumidifier 8 is operated without using the aftercooler 12, the humidity of the indoor air 7 will be reduced by the operation of the evaporator 9, and the air 6 coming out of the dehumidifier 8 will be dry air with a humidity of around 30%. As a result, the humidity of the indoor air 7 will eventually fall below 60%, but the temperature will change due to the condenser 1.
0. Due to the operation of the compressor 11, the temperature of the air 6 coming out becomes 35°C or higher. Therefore, the temperature of the indoor air 7 will eventually reach around 30°C, and the cooling effect will be lost. Therefore, I operated aftercooler 12.
When cold water of about 20°C is circulated, the humidity of the air 6 that comes out is about 40%, but the temperature is about 25°C, so the indoor environment of the indoor air 7 is around 26°C and 60% humidity. Creates a comfortable thermal environment.

With conventional air conditioning systems that use air as a heat medium (typical ones that do not have a reheater), it is difficult to keep the humidity below 65% even if the room temperature is kept below 24°C.

According to the present invention, even in a low-temperature, high-humidity environment where the outside air temperature is around 22°C and the humidity is over 90% during the season, the dehumidifier 8 and the aftercooler 12 can be simply operated without circulating cold water through the cooling coil 2. Just by driving, the temperature of the indoor air can reach 26℃, depending on indoor heat generation.
Humidity can be maintained at around 60%.

〔Effect of the invention〕

Since the present invention is constructed as described above, it has the following effects.

First of all, concrete slabs, which are the building blocks of buildings, are not only structural, fireproof, earthquake-resistant, and soundproofing materials, but also act as a heat medium in place of air, serving as a heat dissipation material for floor radiant heating in the winter, and as a heat dissipation material in the summer. Ceiling slab absorbs cooling air.
Since it acts as a heat dissipation material, air ducts and fan coils are no longer required, saving space. Suction/
Since there is no need to use heat insulating material on the heat dissipation surface, the effect is exceptional. In addition, separate air conditioners for the outer wall surface and the perimeter zone on the room side become unnecessary.

Second, in the conventional air heating medium air conditioning system, all of the heat generated from buildings and human bodies (sensible heat and latent heat) is air-conditioned using air heating medium, but with the framework heat medium radiant cooling of the present invention, all of the heat generated from buildings and human bodies is Sensible heat is handled by body cooling, and latent heat is handled by a dehumidifier with an aftercooler. For this reason, cold air does not accumulate on the floor due to the difference in specific gravity like in air conditioning using an air heat medium, and when the outside air is high humidity and low temperature, such as during the spring season, the aftercooler is simply installed without cooling the frame. It is possible to create a comfortable indoor thermal environment just by operating the dehumidifier, which also saves operating costs.

Third, since it is not an air heating medium, cold drafts do not occur, so it is useful for people who are vulnerable to air conditioning, such as the elderly, women, children, and the sick, as well as for libraries that use air conditioning continuously for long periods of time. To prevent excessive evaporation from water, the pores of the skin contract, which increases blood pressure in the body and helps prevent the development of high blood pressure and other symptoms.

In the framework heating medium radiant cooling based on the "exergy theory" of the present invention, the temperature of the cold source is 16 to 18 degrees Celsius, compared to the 6 to 8 degrees Celsius of the conventional air heating medium.
This has made it possible to use well water, and even when using refrigerators, the power required has decreased due to the increase in refrigeration efficiency, preventing entropy from increasing.

Fourth, in small to medium-sized buildings, if well water at 16 to 18 degrees Celsius is available, a refrigerator will not be necessary, and a dehumidifier with an aftercooler and well water will be a sufficient cooling source for the system of the present invention. Even in large buildings
By adopting a cold heat source of 16 to 18 degrees Celsius, the efficiency of the refrigerator has increased, allowing it to operate at 75% (water cooling) and 90% (air cooling) of conventional power consumption.

Here, exergy (EXERGY) is a word that expresses the quantity and quality of energy.For example, 1000 liters of water at 50℃ and 2000 liters of water at 25℃ have the same amount of energy and heat. The temperature at 50℃ can be used for baths and floor heating, but the temperature at 25℃ cannot. Exergy (effective energy) is a concept that includes "differences in quality." Also, lowering the heat all at once is a wasteful method, so exergy uses it in stages. While the addition of 1+1 holds true for physical quantities such as length, weight, capacity, and time, as far as temperature is concerned, 25+25=50 does not hold.

[Brief explanation of drawings]

Fig. 1 is a schematic diagram of the arrangement of various parts of the present invention, Fig. 2 is an air diagram of the aftercooler showing the amount of cooling, and Fig. 3 is a system diagram. In the drawings, 1 is the main body, 2 is the cooling coil, and 3 is the main body.
8 is an electric dehumidifier, 9 is an evaporator, 10 is a condenser, 11 is a compressor, and 12 is an aftercooler.

Claims (1)

[Claims] 1. A cooling coil is embedded in the building frame, and chilled water is circulated through this cooling coil to cool the ceiling cooling and heat-radiating surfaces, providing a radiant cooling effect to the indoor thermal environment, and using a dehumidifier to cool the indoor humid air. A building frame heat transfer radiation cooling system characterized by maintaining a good thermal environment by creating dry air through the air and sending this air to an aftercooler to remove heat radiated into the room and keep it below room temperature. .