JPH06300385A - Heat-up method using adsorbent - Google Patents

Abstract

PURPOSE:To utilize a heat source of relatively low temperature obtained in a large quantity, e.g. a heat of a hot spring, a flue heat or a solar heat, for regeneration of a dehumidifier and to obtain air of high temperature by using a heat of adsorption generated by humidifying previously-heated air with treated air and by adsorbing that air in a dehumidifying zone of the dehumidifier. CONSTITUTION:Dry air of high temperature is obtained by passing air 6 of high humidity through a dehumidifying zone 10 of a rotary type honeycomb dehumidifier 12. For regeneration of the dehumidifier 12, air 9 obtained by heating outdoor air by utilizing an exhaust heat of hot water or the air of high temperature is utilized. The efficiency is increased further by a method wherein, a sensible heat exchanger 15 being used jointly, the heated air 9 is passed through a heating zone 19 thereof to be heated further and thereby air 19 of high temperature is obtained while air 16 obtained by the dehumidifying zone 10 of the dehumidifier 12 is sent into a cooling zone 17 of the sensible heat exchanger 15 to be cooled down and humidified and then is circulated again as the air 6 of high humidity.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for obtaining high temperature air by utilizing a relatively low temperature heat of about 30 to 60 ° C. which is obtained in a large amount such as heat of hot springs, heat of flue gas and solar heat. It is about.

[0002]

2. Description of the Related Art Utilization of waste heat is recovered and utilized by a heat exchanger or the like, which contributes to energy saving. However, there has been no method for obtaining high-temperature air by utilizing heat at a relatively low temperature of about 30 to 60 ° C.

[0003]

The present invention is particularly suitable for 30-60.
The purpose is to use a heat source that can be obtained in a large amount at a relatively low temperature of about ℃, heat it up to a high temperature (hereinafter referred to as "heat increase"), and reuse it. This is achieved by using the heat of adsorption generated when adsorbing moisture in the air using a dehumidifier with a built-in body.

More specifically, the present invention provides 30 to 6
A heat source having a relatively low temperature of about 0 ° C., for example, hot water or exhaust heat is used, and the outside air is heated by the heat source to 30-60.
The temperature is raised to ℃ and fed into the regeneration zone of the rotary dehumidifier. On the other hand, high-humidity air obtained by spraying water onto the hot water or in the air is passed through the dehumidification zone of the rotary dehumidifier to increase the heat by the heat of adsorption of the water vapor contained in the high-humidity air and at the same time dehumidify the high temperature and low humidity. Air (hereinafter referred to as air supply)
Is what you get.

[0005]

Example 1 As shown in FIG. 1, a large amount of hot water 2 at a temperature of about 60 ° C. is put in a closed container 1, and a part of the hot water 2 is sprayed 4 from above inside the container 1 by a pipe 3 using a pump P. The outside air 5 is heated and humidified to obtain humidified air 6. On the other hand, the pipe preferably has a large heat conductivity and a large heat conduction area.
Is immersed in the warm water 2 and the outside air 8 is passed through the pipe 7 to obtain heated air 9. Dehumidification zone 10 and regeneration zone 11
By preparing a rotary type dehumidifier 12 equipped with and feeding the humidified air 6 into the dehumidifying zone 10 and the heated air 9 into the regeneration zone 11 respectively to dehumidify the humidified air 6 continuously, the adsorption heat is released. Thus, the high temperature and low humidity air supply 13 is obtained. 1 in the figure
4 is exhaust.

As a rotor of the dehumidifier 12, Japanese Patent Application No. 60-8
No. 6969 (JP-A-61-252497), a rotor using aluminum silicate gel as a moisture absorbent, hot water at 63 ° C. 2
Is used to divide the cross section of the dehumidification rotor 12 into two equal parts to form a dehumidification zone and a regeneration zone, and the wind speed in front of the dehumidification zone 10 is 1.5 m / sec. , The wind speed in front of the reproduction zone 11 was 3 m / sec. The following table shows an example of the data of the temperature and absolute humidity of the air of each part in the case of.

[0007]

[Table 1] Code of air Temperature [° C] Absolute humidity [g / kg] 5 (Outside air) 30 15 6 (Processed air) 60 110 13 (High humidity air supply) 90 90 8 (Outside air) 30 15 9 (Regenerated air) ) 60 15 14 (exhaust) 45 25

[0008]

[Embodiment 2] In this embodiment, high temperature air is used as a heat source. In FIG. 2, the same reference numerals as those in FIG. 1 denote the same parts and the like. As shown in FIG. 2, in Example 1, a pipe 20 for heat exchange is provided in place of the hot water 2 used, the high temperature exhaust gas 2a is passed through the pipe 20, and the pipe 7 for heating the air in the closed container is inserted into the container 1. The outside air 8 is fed into the pipe 7, and the outside air 8 is heated in the container 1 to obtain heated air 9. On the other hand, insert the pipe 3a into the container 1
Water, preferably hot water, is sent to and sprayed to humidify the air in the container 1 to obtain humidified air 6. Sensible heat exchanger 1 in the above device
5 was added and the hot air 16 obtained through the dehumidifying zone 10 of the rotary dehumidifier 12 was passed through the cooling zone 17 of the rotary honeycomb sensible heat exchanger 15 to obtain the air 1
8 is fed into the closed chamber 1 to reduce heat. On the other hand, heated air 9 obtained by heating the outside air 8 in the container 1 is passed through the heating zone 19 of the sensible heat exchanger 15 to exchange heat between the air 9 and the air 16 and supply the hot air 13 as high temperature air. It should be noted that the regeneration air 9a to be sent to the regeneration zone 11 of the dehumidifier 12 is preferably the high temperature air obtained by heating the outside air 8 in the container 8 like the air 9.

Same dehumidifier rotor as in Example 1 and 63 ° C.
The following table shows an example of the data of the temperature and the absolute humidity of the air in each part when the exhaust heat 2a is used and the wind velocity on the front surface of the dehumidifier rotor is the same as that in the first embodiment.

[0010]

[Table 2] Code of air Temperature [° C] Absolute humidity [g / kg] 18 (return air) 63 906 (processed air) 60 110 16 (air supply) 90 908 (outside air) 30 15 9 (heated air) 60 15 9a (regeneration air) 60 15 13 (air supply) 87 15

In Embodiments 1 and 2 above, the dehumidifiers are all honeycomb rotors using an adsorbent-type absorbent, but of course other types of dehumidifiers such as LiCl are used.
The honeycomb moisture-absorption rotor impregnated with can also be arbitrarily used as long as it can be reused by desorption and regeneration. Although a honeycomb rotor is used as the sensible heat exchanger, a static crossflow type heat exchanger or any other heat exchanger may be used. However, the honeycomb rotor is still the most suitable because it can be operated continuously and has high efficiency.

[0012]

Since the present invention is configured as described above, the heat of adsorption at the time of adsorbing moisture in the dehumidifying zone of the dehumidifier is used to heat at a relatively low temperature of about 30 to 60 ° C, for example, the heat of a hot spring. Alternatively, heat of flue exhaust, heat obtained in large amounts such as solar heat can be used to obtain air at a temperature higher than the temperature of the heat source, and a large amount of low heat can be effectively used to contribute to energy saving. .

Particularly when a rotary type honeycomb dehumidifier is used as the dehumidifier 12, high-temperature air can be continuously supplied, and the effect is more remarkable.

[Brief description of drawings]

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

FIG. 2 is a system diagram showing another embodiment of the present invention.

[Explanation of symbols]

 2 Large amount of hot water 2a Large amount of gas heat source 5,8 (OA) Outside air 12 Dehumidifier 13 (SA) Air supply 15 Sensible heat exchanger

Claims (4)

[Claims] Claims: 1. A high-humidity air is passed through an adsorbent to be adsorbed and dehumidified, and the high-humidity air is made into high-temperature dry air by the heat of adsorption, while outside air is heated by a heat medium capable of obtaining a large amount. A method for increasing heat using an adsorbent, characterized in that the adsorbent is regenerated by hot air. 2. The heat increasing method using the adsorbent according to claim 1, wherein the heat source obtained in a large amount is hot water or heated air. 3. The heat increasing method using the adsorbent according to claim 1, wherein the adsorbent is a rotary dehumidifier. 4. A heat increasing method using an adsorbent according to claim 1, wherein high-humidity air obtained by humidifying outside air with steam produced by a heat source obtained in a large amount is used.