JP2018028424A - Humidifying/dehumidifying air conditioner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a humidifying/dehumidifying air conditioner which achieves power saving of air conditioning by performing humidity control as, in the case where air conditioning is performed in a residence, an office, a factory, a livestock barn and the like (hereinafter referred to as general air conditioning), temperature control is performed but humidity control is hardly performed and it is because the power consumption increases by the humidity control, and which also achieves power saving of air conditioning by eliminating or reducing the requirement of fresh air, even though fresh air should be introduced in a living space where a person exists.SOLUTION: Water is flowed from an upper part of a nonwoven cloth or a towel cloth or a sponge cloth, the water is impregnated in the cloth and it drips down. Thus, a water surface is created in the vertical direction. A large number of water surfaces are arranged in the longitudinal direction, they are brought into contact with air conditioning air, and the humidity of the air conditioning air is controlled (hereinafter referred to as vertical water surface 2). In the case of performing dehumidification, water in a water tank 1 which is cooled to a temperature lower than a wet bulb temperature of the air is flowed on the vertical water surface 2, and it is brought into contact with the air conditioning air. In the case of performing humidification, the water in the water tank 1 which is heated to a temperature higher than the wet bulb temperature of the air is flowed on the vertical water surface 2, and it is brought into contact with the air conditioning air.SELECTED DRAWING: Figure 1

Description

Humidification and dehumidification of residences, offices, factories, barns, etc.
It is desired to perform dehumidification and air conditioning in summer to create a comfortable environment. However, when dehumidification is performed, power consumption increases in the conventional dehumidifier. This case relates to an air conditioner that dehumidifies to reduce power consumption.

Recent major dehumidification methods are: 1. Cooling dehumidification 2. dry dehumidification method; Spray dehumidification method.
4). Wet dehumidification method and the like.

The cooling and dehumidifying method is called an air conditioner, and when it is operated at 25 ° C. in summer, it is devised to operate the cooling and dehumidifying simultaneously, and the relative humidity is set to 60% Rh. Since dehumidification is not performed unless the air is once lowered below the dew point temperature, a large amount of energy is required because the blowing temperature is lowered by 10 ° C. or more from the air conditioning temperature.
In addition, when operated in the dehumidifying mode, the air blowing speed becomes slow and the room temperature rises to 25 ° C. or higher. In addition, the power consumption increases due to the full rotation of the refrigerator from the cooling temperature operation of 25 ° C.
Cooling dehumidification cools air-conditioning air below the dew point temperature and causes dew condensation to dehumidify.
The air conditioner generally used is a cooling and dehumidifying method, and when it is set to 25 ° C., the relative humidity is designed to be around 60% RH or below, and it becomes a comfortable environment. Recently, in order to save energy, the Environment Agency has requested that the air conditioning temperature in summer be raised to 28 ° C. However, if the operation is performed at 28 ° C, the absolute moisture content will increase and the comfortable environment will not be realized. There are many.

The dry dehumidification method is a method of dehumidifying by bringing silica into contact with air.
In this method, it is essential to remove moisture adhering to the silica gel, and the silica gel must be regenerated with hot air of 120 ° C. or higher.
For this reason, the heating power to the silica gel and the air in contact with the silica gel are heated, so that power for cooling the residual heat is required.
Recently, it has been reported that diatomaceous earth in Wakkanai is used for regeneration at low temperatures, but it has not been put into practical use because of its low dehumidification amount.

  The spray dehumidification method is a method of spraying water cooled below the dew point temperature in the dew point chamber in the form of a mist and cooling the air to perform dehumidification. However, this method always requires reheating. It is effective in small spaces such as, but it is not suitable for general air conditioning in houses.

  Wet dehumidification / humidification methods can be energy-saving with a large amount of dehumidification effect in the range of temperatures between 25 ° C and 30 ° C, while wet dehumidification methods using chloride chloride or chloride chloride require a regeneration device for chloride chloride or chloride chloride. For this reason, the apparatus becomes large and expensive. Further, since waste liquid treatment of chloride chloride or calcium chloride is necessary, it is not very popular.

  JP 2009-127929 A   JP-A-11-141955   JP-A-9-159253   JP 2006-004674 A   Japanese Patent Laid-Open No. 2007-225154

In the case of air conditioning a house, office, factory, barn, etc. (hereinafter referred to as general air conditioning), the temperature is adjusted, but the humidity is hardly adjusted.
This is because power consumption increases when humidity is adjusted. In the present invention, the humidity is adjusted and the air conditioning is turned off.
Although fresh air must be introduced into a living space where people are present, the present invention does not require or reduces fresh air, thereby eliminating the energy of air conditioning.

In a dry region in foreign countries, even if the temperature is 30 ° C, the relative humidity is low, so it feels comfortable.
An experiment was conducted to confirm the true meaning by a sensation test in a constant temperature and humidity chamber. The optimum cooling temperature of the air conditioner was at 25 ° C operation. If the temperature is 30 ° C and the relative humidity is 40% RH, the temperature is almost the same as the air conditioner 25 ° C operation. There is.
For us, as a result of conducting a comparative test of 40% relative humidity at a room temperature of 30 ° C. when the air conditioner was operated at 25 ° C. for confirmation, it was difficult to know which one was in the room.

Everyone knows that it will be humidified with water, but it is not well known that water dehumidifies.
The experiment will be conducted using the constant temperature and humidity chamber shown in Fig. 3.
A water tank is created in a sealed constant temperature and humidity chamber, water is added, and a cooling coil is installed so that the water can be cooled, so that the temperature of the water can be controlled and cooled.
(Experiment 1) Room temperature 30 ° C. When the water temperature is 30 ° C. (result control), the relative humidity becomes 100% RH.
(Experiment 2) Room temperature 30 ° C. When the water temperature is 25 ° C. (cooling control), the relative humidity becomes 65% RH.
(Experiment 3) When the room temperature is 30 ° C. and the water temperature is 20 ° C. (cooling control), the relative humidity becomes 40% RH.
From the above experiment, when the temperature of the water in contact with the room air is the same, the relative humidity is also lowered, and the cooled water is dehumidified. It was also discovered that the water temperature was the same as the wet bulb temperature.

I will explain the three-dimensional water surface of the present invention. Water is poured into the cloth from the upper part of the nonwoven fabric or towel cloth, and dropped to create a water surface in the vertical direction. The surface is arranged in parallel in the vertical direction and brought into contact with the conditioned air to control the humidity of the conditioned air. (Hereinafter referred to as three-dimensional water surface).
In the case of dehumidifying, water cooled to a temperature lower than the wet bulb temperature of air is flowed to the three-dimensional water surface and brought into contact with the conditioned air.
In the case of humidification, water heated to a temperature higher than the wet bulb temperature of air is flowed over the three-dimensional water surface and brought into contact with the conditioned air.

  In a conventional air conditioner, the enthalpy between room air and air blown at room temperature of 25 ° C. is 12.3, and the difference between room air and blown air at 30 ° C./40% RH in terms of temperature and humidity due to the three-dimensional water surface of the present invention. Since the enthalpy is 5.9, the energy saving rate in the energy consumption of the circulating air is 52%.

  As for the enthalpy of fresh air, the enthalpy difference of the conventional air-conditioner is 7.0, and the enthalpy difference of the three-dimensional water surface of the present invention is 5.1. Therefore, the energy saving rate in the energy consumption is 22.2%. .

Since the water immediately after dehumidification from the air does not contain any carbon dioxide, when it comes into contact with the air, if the water temperature is 20 ° C. or less, it absorbs carbon dioxide of the same volume as the amount of water dehumidified from carbon dioxide. . This feature makes it possible to reduce or reduce the amount of fresh air required for general air conditioning.
If the amount of fresh air is not required or can be reduced, the sensible heat load and latent heat load due to the fresh air can be further reduced, and the fresh air load can be saved to 22.2% or less.

It is a figure which shows roughly the structure of the temperature / humidity control regarding the general air conditioning concerning embodiment of this invention. It is detail drawing of the three-dimensional water surface of this invention. It is the schematic of the thermo-hygrostat for demonstrating that dehumidification can be performed with the cooled water surface. It is a wet line figure at the time of the load of the summer 1 day average of the air conditioner used for the conventional general air conditioning. It is a three-dimensional water surface of this invention, and when it is used for general air conditioning, it is a wetness diagram at the time of the load of the summer average at the time of cooling.

Hereinafter, embodiments of the present invention will be described with reference to FIGS.
In FIG. 1, it is a figure which shows roughly the structure of the temperature / humidity control regarding the general air conditioning concerning embodiment of this invention, and shows the structure of the solid water surface of this invention.
1 air tank, 2 non-woven fabric, 3 submersible pump, 4 water pipe, 5 peret heat exchanger, 6 air conditioning fins, 7 circulation fan, 8 heat pump, etc.
FIG. 2 is a detailed view of the three-dimensional water surface of the present invention. When dehumidifying the air to be conditioned, the water in the aquarium is cooled below the wet bulb temperature. When humidifying the air to be conditioned, the water in the aquarium is heated above the wet bulb temperature. Although a heat pump is used for cooling and heating and a plate heat exchanger is described in FIG. 2 for heat exchange, a copper tube may be used in the water tank.
9. Nonwoven fabric fixing bracket 10. 10. Plate heat exchanger gas outlet The plate heat exchanger gas inlet [FIG. 3] is a thermostat chamber of the prior art. This explains that the water surface is dehumidified.
12 Water tank 13. 13. Gas pipe for cooling Air conditioning fins 15. The circulation fan [FIG. 4] is described with reference to the air wetness diagram of a conventional air conditioner. It is a reference figure for comparing energy saving.
The air conditioning is described with an air wetness diagram.
[FIG. 5] explains air-conditioning by the three-dimensional water surface of the present invention with an air wetness diagram. It is a figure for comparing energy saving.

It relates to the air wetting diagram [FIG. 4].
In the summer, when the outside air temperature is 32 ° C and the relative humidity is 50% RH, the energy consumption of the conventional air-conditioning and the indoor temperature of 25 ° C and the relative humidity of 60% RH is controlled. Multiply the difference by the air volume.
The enthalpy of the circulating air is (hB 56.0) the enthalpy of the air conditioner outlet (hC 42.7) = the enthalpy difference (12.3) × the air volume.

It relates to the air wetting diagram [FIG. 5].
In summer, when the outside air temperature is 32 ° C. and the relative humidity is 50% RH, the air conditioner attached with the three-dimensional water surface of the present invention consumes when controlled in a comfortable environment with an indoor temperature of 30 ° C. and a relative humidity of 40% RH. To investigate energy, multiply the difference in enthalpy by the air volume.
The enthalpy of the circulating air is (RB 57.9) -enthalpy of the air conditioner outlet (RC 52.0) = enthalpy difference (5.9) × air volume.

  The enthalpy of the circulating air in the conventional air-conditioning operation at 25 ° C. is 12.3, and the enthalpy at 30 ° C./40% RH of the three-dimensional water surface of the present invention is 5.9, so that the energy saving rate in energy consumption is 52%. Can save energy.

  As for the enthalpy of fresh air, the conventional aecon enthalpy difference is 7.0, and the enthalpy difference of the three-dimensional water surface of the present invention is 5.1, so that the energy saving rate in energy consumption can be 22.2%.

Since the water immediately after dehumidification from the air does not contain any carbon dioxide, when it comes into contact with the air, if the water temperature is 20 ° C. or less, it absorbs carbon dioxide of the same volume as the amount of water dehumidified from carbon dioxide. . This feature makes it possible to reduce or reduce the amount of fresh air required for general air conditioning.
If the amount of fresh air is not required or can be reduced, the sensible heat load and latent heat load due to the fresh air can be further reduced to save energy.

  Since the three-dimensional water surface comes into contact with the conditioned air, dust, viruses, organic solvents, etc. floating in the air adhere and absorb on the water surface, so that it has a function of performing air cleaning.

1 of FIG. Aquarium 2. Three-dimensional water surface Water pipe 4. 4. Submersible pump Heat pump fins 6. Reference numeral 7 of the heat pump [FIG. 2]. Water supply nozzle 8. Nonwoven fabric 9. Water tank 10. Plate heat exchanger 11. Water tank 12. 12. Heat pump piping return rod Heat pump piping forward [Fig. 3] 7. Aquarium 8. Cooling coil 9. Heater 10. Reference sign of fan [FIG. Outside air B. Indoor air C.I. C. Cooler outlet air Cooler inlet air hA. Outside air enthalpy hB. Indoor enthalpy hC. Cooler outlet enthalpy hM. Cooler inlet enthalpy [Fig. Outside air B. Indoor air C.I. C. Cooler outlet air Cooler inlet air HA. Outside air enthalpy RB. Indoor enthalpy RC. Cooler outlet enthalpy RM. Cooler inlet enthalpy

Claims (7)

  1 water tank 2 non-woven fabric 3 submersible pump 4 water pipe 5 dehumidifying / humidifying device having a three-dimensional water surface composed of a 5-plate heat exchanger   For humidity control, while flowing water on the three-dimensional water surface, during cooling, the water is cooled and adjusted to below the wet bulb temperature to dehumidify, and during heating, the water is heated to above the wet bulb temperature and humidified. Device to do.   An apparatus characterized by using a heat exchanger of a heat pump while flowing water on a three-dimensional water surface, dehumidifying and cooling when the heat pump is cooled, and humidifying and heating when heated.   The equipment is characterized by using three-dimensional water surface and dehumidifying only with well water in summer and humidifying in winter.   An air conditioner that uses three-dimensional water surface, can use well water and heat pump at the same time, dehumidify and cool in summer, and humidify and heat in winter.   Although fresh air must be introduced into living spaces where people are present, air-conditioned air is always in contact with the three-dimensional water surface. .   A device that combines a cooling device, a heating device, a dehumidifying device, a humidifying device, and an air purifying device.