KR20130123167A - The dehumidification system using heater and waste heat, and the management method - Google Patents

The dehumidification system using heater and waste heat, and the management method Download PDF

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KR20130123167A
KR20130123167A KR1020120046371A KR20120046371A KR20130123167A KR 20130123167 A KR20130123167 A KR 20130123167A KR 1020120046371 A KR1020120046371 A KR 1020120046371A KR 20120046371 A KR20120046371 A KR 20120046371A KR 20130123167 A KR20130123167 A KR 20130123167A
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South Korea
Prior art keywords
air
evaporator
inflow
heater
heating
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KR1020120046371A
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Korean (ko)
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KR101971960B1 (en
Inventor
고영호
노종화
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대우조선해양 주식회사
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B27/00Machines, plants or systems, using particular sources of energy
    • F25B27/02Machines, plants or systems, using particular sources of energy using waste heat, e.g. from internal-combustion engines
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B29/00Combined heating and refrigeration systems, e.g. operating alternately or simultaneously
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2400/00General features or devices for refrigeration machines, plants or systems, combined heating and refrigeration systems or heat-pump systems, i.e. not limited to a particular subgroup of F25B
    • F25B2400/01Heaters
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2500/00Problems to be solved
    • F25B2500/14Problems to be solved the presence of moisture in a refrigeration component or cycle
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2600/00Control issues
    • F25B2600/25Control of valves
    • F25B2600/2515Flow valves
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02ATECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A30/00Adapting or protecting infrastructure or their operation
    • Y02A30/27Relating to heating, ventilation or air conditioning [HVAC] technologies
    • Y02A30/274Relating to heating, ventilation or air conditioning [HVAC] technologies using waste energy, e.g. from internal combustion engine

Abstract

The present invention relates to a dehumidification system using a heater and waste heat. In order to regulate moisture by condensing water vapor in the air with air by a refrigeration cycle, the refrigerant is converted into a low temperature and low pressure gas A compressor for converting the refrigerant discharged from the compressor into a high-temperature, high-pressure gas so as to increase the temperature of the dry air from which moisture has been removed through the evaporator, And an expansion valve for reducing the pressure of the refrigerant discharged from the condenser to a pressure capable of causing evaporation by the throttling action, the dehumidification system comprising: A heater for heating; A heat exchanger for heating the inflow air to warm the inflowing outside air through the heat exchange using the waste heat generated in the compressor and then supplying the heated air to the evaporator; An inflow air control opening / closing valve for controlling the inflow of outside air into any one of the evaporator, the inflow air heating heater, and the inflow air heating heat exchanger; And a waste heat recycling opening / closing valve for regulating the inflow of the waste heat of the compressor into the heat exchanger.

Description

[0001] The present invention relates to a dehumidification system using a heater and waste heat,

The present invention relates to a dehumidifying system, and more particularly, to a dehumidifying system and a method of operating the same using a heater and waste heat, which are capable of using a cooling type or a hybrid type dehumidifying system irrespective of the season.

Generally, when a ship is to be built in a shipyard or the like, the hull is divided into blocks and individually manufactured, and the blocks are sequentially assembled to form a hull, and the block is painted during the manufacturing process .

On the other hand, the relative humidity is controlled by using a dehumidifier before painting the hull block. In the summer, a cooling type or combined type (dehumidifier) is used. In the spring and autumn, the outside temperature is low, I am using a combined dehumidifier with large power. That is, in spring and autumn, a cooling dehumidifier is not used because the dehumidification is limited due to the occurrence of an image on the cooling coil constituting the cooling cycle due to the low outside temperature.

Incidentally, the cooling dehumidifier has low power consumption, but it can only be used during the summer season. It can be heated by gas, electric heater or waste heat before it is supplied in the shelter, and it also has simple ventilation and cooling ventilation function.

A combined dehumidifier having a dehumidifying rotor is also referred to as a desiccant dehumidifier and can be used in spring and autumn. However, there is a problem that the initial equipment purchase cost and operation cost are relatively higher than those of the cooling dehumidifier.

The hybrid type dehumidifier uses a dehumidification rotor, but the operation cost can be reduced by replacing the heater for rotor drying with the condenser waste heat. However, in spring and autumn, driving is limited due to ambient temperature.

Accordingly, in the painting workshop, a combination type dehumidifier rather than a cooling type dehumidifier is preferred for dehumidification in spring and autumn. However, considering that the number of times of dehumidification in spring and autumn is not so much compared to the summer season, it is inefficient to install a combined dehumidifier.

As shown in FIG. 1, the conventional technology related to the dehumidification used in a shipyard has a configuration in which a dehumidifier 2 and a dehumidifier 2 are disposed in the air conditioner 1, the dehumidifier 2 and the regenerator 3, The solution heat exchanger 4 and the cooler 5 are installed between the regenerators 3 and the porous packings 7 are filled in the evaporator 1 and the dehumidifier 2 for smooth contact between the gas and the liquid, The dehumidifier 2 is provided with a plurality of cooling pipes 6 and 6 'penetrating from the outside thereof (see Patent Document 1).

[Patent Document 1] Domestic Registered Patent No. 10-008461

SUMMARY OF THE INVENTION Accordingly, the present invention has been made keeping in mind the above problems occurring in the prior art, and it is an object of the present invention to provide a dehumidifying system and a method of operating the same using a heater that can reduce energy by making it possible to freely use a cooling dehumidifier, The purpose is to provide.

In order to accomplish the above object, the present invention provides a dehumidification system using a heater and waste heat, comprising: a condenser for condensing water vapor in the air into water by a refrigeration cycle to regulate moisture; A compressor for converting the refrigerant discharged from the evaporator into a high-temperature and high-pressure gas, a refrigerant discharged from the compressor to increase the temperature of the dry air from which moisture has been removed through the evaporator, A condenser for converting the refrigerant into a high-temperature and high-pressure liquid, and an expansion valve for reducing the pressure of the refrigerant discharged from the condenser to a pressure capable of causing evaporation by throttling, the system comprising: A heater for heating the inflow air to be supplied to the evaporator; A heat exchanger for heating the inflow air to warm the inflowing outside air through the heat exchange using the waste heat generated in the compressor and then supplying the heated air to the evaporator; An inflow air control opening / closing valve for controlling the inflow of outside air into any one of the evaporator, the inflow air heating heater, and the inflow air heating heat exchanger; And a waste heat recycling opening / closing valve for regulating the inflow of the waste heat of the compressor into the heat exchanger.

If the temperature of the incoming outside air is lower than the set value, the inflow air controlling opening / closing valve is opened so that the incoming outside air can be introduced into the inflow air heating heater, When the outdoor air is supplied to the evaporator and a normal refrigeration cycle is performed in accordance with the heated air supplied from the heater for heating the inflow air, the inflow air control opening / closing valve is closed to allow inflow of air into the inflow air heating heater Closing the inlet air adjusting opening / closing valve so that the introduced outside air can be introduced into the heat exchanger for heating the inflow air, and at the same time, After opening the waste heat recovery opening / closing valve so as to be able to flow into the heat exchanger for heat exchange, It can be supplied to the external air warmed by the unit inlet air heating heat exchanger to the evaporator.

In order to achieve the above-mentioned object, a method of operating a dehumidifying system using a heater and waste heat according to the present invention is a method of operating a dehumidifying system using condensers to condense water vapor in the air by a refrigeration cycle, A compressor for converting the refrigerant discharged from the evaporator into a high-temperature and high-pressure gas; a compressor for converting the refrigerant discharged from the compressor into a high-temperature and high-pressure gas; A condenser for converting the discharged refrigerant into a high-temperature and high-pressure liquid; and an expansion valve for reducing the pressure of the refrigerant discharged from the condenser to a pressure capable of causing evaporation by throttling, the method comprising: Operating the system; If the temperature of the outside air flowing into the evaporator is lower than the set value, heating the outside air flowing through the heater operation and supplying the heated outside air to the evaporator; And stopping the operation of the heater when the normal refrigeration cycle is performed according to the heated air supply, heating the introduced outside air by heat exchange using the waste heat generated in the compressor through the heat exchanger, and then supplying the heated outside air to the evaporator And a control unit.

According to the present invention, by using the heater or the waste heat of the compressor to heat or warm the incoming air to increase the evaporating temperature of the refrigerant, the cooling dehumidifier having low power consumption can be used regardless of the season, I can do it. Even in the case of a conventional hybrid type dehumidifier, the use of the dehumidifier was limited in spring and autumn, and the period of use can be extended by applying this system.

1 is a conceptual view of a conventional small wet-type air conditioner.
2 is a conceptual diagram of a dehumidifying system utilizing a heater and waste heat according to the present invention.
3 is a flowchart of a method of operating a dehumidifying system using a heater and waste heat according to the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear. In addition, the preferred embodiments of the present invention will be described below, but it is needless to say that the technical idea of the present invention is not limited thereto and can be variously modified by those skilled in the art.

FIG. 2 is a conceptual diagram of a dehumidification system using a heater and waste heat according to the present invention, and FIG. 3 is a flowchart of a method of operating a dehumidification system using a heater and waste heat according to the present invention.

The dehumidifying system and the operating method using the heater and waste heat according to the present invention can reduce the energy by allowing the cooling dehumidifier having low power consumption to be freely used regardless of the season.

As shown in FIG. 2, the dehumidification system using the heater and waste heat according to the present invention includes a general cooling type dehumidification system configuration for controlling moisture by condensing water vapor in the air into water by a refrigeration cycle, Which is a core constitution of the present invention.

The cooling type dehumidification system is composed of an air filter 101, an evaporator 102, a compressor 103, a condenser 104, an expansion valve 105, a heat exchanger 106, a blower 107, And an on-off valve (108).

The evaporator 102 converts the refrigerant into a low-temperature and low-pressure gas so as to lower the temperature of the external air flowing through the air filter 101.

The compressor 103 converts the refrigerant discharged from the evaporator 102 into a high-temperature, high-pressure gas.

The condenser 104 converts the refrigerant discharged from the compressor 103 into high-temperature, high-pressure liquid so as to increase the temperature of the dry air passing through the evaporator 102 and removing moisture.

The expansion valve 105 serves to reduce the pressure of the refrigerant discharged from the condenser 104 to a pressure capable of causing evaporation by the throttling action and is also suitable for absorbing sufficient heat in the evaporator 102 And serves to regulate and supply the amount of refrigerant.

The heat exchanger 106 receives the waste heat generated from the compressor 103 and increases the temperature of the air discharged from the evaporator 102 through heat exchange.

The blower 107 is controlled by the on-off valve 108 to directly supply the air passing through the evaporator 102 into the painting workshop or warmed by the heat exchanger 106, .

The structure for heating the inflow air includes a heater 110 for heating the inflow air, a heat exchanger 120 for inflow air heating, an open / close valve 130 for controlling the inflow air, and a waste heat recovery opening / closing valve 140 .

The inflow air heating heater 110 appropriately heats the introduced external air and supplies the heated external air to the evaporator 102.

The inflow air heating heat exchanger 120 appropriately raises the temperature of the introduced outside air through heat exchange using waste heat generated in the compressor 103 and then supplies the heated air to the evaporator 102.

The opening / closing valve for controlling the inflow air 130 regulates the inflow of the outside air into the evaporator 102, the heater for heating the inlet air 110, and the heat exchanger 120 for the inflow air heating .

The waste heat recovery opening / closing valve 140 regulates the flow of the waste heat of the compressor 103 into the heat exchanger 120.

The operation of the constitution for heating the inflow air is as follows. If the temperature of the inflowing outside air is lower than the set value, the inflow air adjusting opening / closing valve 130 is opened and then the heater 110 for heating the inflow air is operated to supply the heated outside air to the evaporator 102.

That is, in the case where the cooling cycle is not normally performed due to a low ambient temperature such as in spring and autumn, the introduced outside air is preheated to a predetermined temperature and supplied to the evaporator 102 to increase the evaporation temperature of the refrigerant, So that the cooling cycle can be normally performed.

When a normal refrigeration cycle is performed in accordance with the heated air supplied from the heater 110 for heating the inflow air, the inflow air controlling valve 130 is closed to cool the inflow air heating heater 110 And the operation of the heater 110 for heating the inflow air is stopped.

The open / close valve 130 for opening and closing the inlet air is opened so that the introduced outside air can flow into the inlet air heating heat exchanger 120, and the waste heat is supplied to the inlet air heating heat exchanger 120 And then supplies the warmed external air to the evaporator 102 through the heat exchanger 120 for heating the inflow air.

That is, when a normal refrigeration cycle is performed according to the heated air supplied from the heater 110 for heating the inflow air, the heating heater 110 stops operating and uses the waste heat of the compressor 103 to save energy And the outside air introduced by the heat exchange is heated and supplied to the evaporator 102.

Referring to FIG. 3, an evaporator for converting a refrigerant into a low-temperature and low-pressure gas so as to lower the temperature of the external air to be introduced, in order to condense water vapor in the air into water by means of a refrigeration cycle to regulate moisture, A condenser for converting the refrigerant discharged from the compressor into a high-temperature and high-pressure liquid so as to increase the temperature of the dry air from which moisture has been removed through the evaporator, and a condenser And an expansion valve for reducing the pressure of the refrigerant to a pressure capable of causing evaporation by the throttling action.

First, when the dehumidifying system is operated, it is determined whether the temperature of the outside air flowing into the evaporator is equal to or lower than a set value (S110, S120).

If it is determined that the outside air temperature is lower than the set value, the outside air flowing through the heater operation is heated and supplied to the evaporator (S130).

That is, in the case where the cooling cycle is not normally performed due to a low ambient temperature such as spring or autumn, the introduced external air is preheated and supplied to the evaporator, thereby increasing the evaporation temperature of the refrigerant, So that it can be performed normally.

For reference, when the temperature of the incoming outside air exceeds the set value, outside air is directly supplied to the evaporator without any process.

Subsequently, it is determined whether a normal refrigeration cycle is performed according to the heated air supply (S140).

If it is determined that the normal refrigeration cycle has been performed, the operation of the heater is stopped and the introduced outside air is heated by the heat exchange using waste heat generated in the compressor through the heat exchanger, and then supplied to the evaporator (S150).

That is, when a normal refrigeration cycle is performed according to the heated air supply in the heater, the heater stops operation and uses the waste heat generated in the compressor to warm the outside air introduced by the heat exchange and supply it to the evaporator will be.

As described above, by applying the present invention, it is possible to freely use a cooling type dehumidifier having low power consumption regardless of the season by heating or warming the introduced outside air by properly utilizing the heater or the waste heat of the compressor, The energy cost of the workplace can be reduced.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the scope of the invention is not limited to the disclosed exemplary embodiments. And various alternatives, modifications, and changes may be made within the scope of the present invention to those skilled in the art.

Therefore, the embodiments disclosed in the present invention and the accompanying drawings are intended to illustrate and not to limit the technical spirit of the present invention, and the scope of the technical idea of the present invention is not limited by these embodiments and the accompanying drawings . The scope of protection of the present invention should be construed according to the following claims, and all technical ideas within the scope of equivalents should be construed as falling within the scope of the present invention.

101: air filter 102: evaporator
103: compressor 104: condenser
105: expansion valve 106: heat exchanger
107: blower 108: opening / closing valve
110: heater for heating inflow air 120: heat exchanger for inflow air heating
130: Opening and closing valve for adjusting the inlet air 140: Opening and closing valve for recovering waste heat

Claims (3)

An evaporator 102 for converting the refrigerant into a low-temperature and low-pressure gas so as to lower the temperature of the introduced outside air to condense the water vapor in the air into water by the refrigeration cycle to regulate moisture, (103) for converting the refrigerant discharged from the compressor (103) into a high-temperature, high-pressure liquid so as to increase the temperature of the dry air from which moisture has been removed through the evaporator And an expansion valve (105) for reducing the pressure of the refrigerant discharged from the condenser (104) to a pressure capable of causing evaporation by throttling action, the dehumidification system comprising:
A heater (110) for heating the incoming air to supply the heated external air to the evaporator (102);
An inflow air heating heat exchanger 120 for increasing the temperature of the introduced outside air through heat exchange using waste heat generated in the compressor 103 and then supplying the heated air to the evaporator 102;
An inflow air adjusting opening / closing valve 130 for controlling inflow of outside air into any one of the evaporator 102, the inflow air heating heater 110, and the inflow air heating heat exchanger 120;
And a waste heat recovering opening / closing valve (140) for controlling the inflow of the waste heat of the compressor (103) into the heat exchanger (120).
The method according to claim 1,
When the incoming outside air temperature is lower than the set value, the inflow air controlling opening / closing valve 130 is opened so that the inflowing air can be introduced into the inflow air heating heater 110, To supply the heated external air to the evaporator 102,
When a normal refrigeration cycle is performed in accordance with the heated air supplied from the heater 110 for heating the inflow air, the inflow air controlling opening / closing valve 130 is closed to block inflow of air into the inflow air heating heater 110 The operation of the heater 110 for heating the inlet air is stopped and the inlet air control opening / closing valve 130 is opened so that the introduced outside air can be introduced into the heat exchanger 120 for heating the inlet air And the waste heat recovering opening / closing valve 140 is opened so that the waste heat can be introduced into the heat exchanger 120 for warming the inflow air, To the evaporator (102), and a dehumidifying system utilizing the waste heat.
A condenser for condensing the water vapor in the air into water by a refrigeration cycle to regulate moisture, an evaporator for converting the refrigerant into a low-temperature and low-pressure gas so as to lower the temperature of the introduced external air, A condenser for converting the refrigerant discharged from the compressor into a high-temperature and high-pressure liquid so as to increase the temperature of the dry air from which moisture has been removed through the evaporator, and a condenser for evaporating the refrigerant discharged from the condenser, And an expansion valve for decompressing the pressure of the exhaust gas to a pressure that can cause the dehumidifying system to operate,
Operating the dehumidifying system;
If the temperature of the outside air flowing into the evaporator is lower than the set value, heating the outside air flowing through the heater operation and supplying the heated outside air to the evaporator;
And stopping the operation of the heater when the normal refrigeration cycle is performed according to the heated air supply, heating the introduced outside air by heat exchange using the waste heat generated in the compressor through the heat exchanger, and then supplying the heated outside air to the evaporator And operating the dehumidifying system using the heater and the waste heat.
KR1020120046371A 2012-05-02 2012-05-02 The dehumidification system using heater and waste heat KR101971960B1 (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104180523A (en) * 2014-08-19 2014-12-03 清华大学 Flue gas waste heat recovery unit
KR101709867B1 (en) * 2015-09-24 2017-02-23 한국전력공사 Apparatus for capturing of carbon dioxide
KR102067605B1 (en) 2019-10-18 2020-01-17 미르지엔아이 주식회사 solar-powered air purification and dehumidification device

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3989097A (en) * 1974-09-27 1976-11-02 Marshall Erdman And Associates, Inc. Dehumidification controls
JP2001004278A (en) * 1999-06-18 2001-01-12 Shizuoka Gas Kk Dryer and heater

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3989097A (en) * 1974-09-27 1976-11-02 Marshall Erdman And Associates, Inc. Dehumidification controls
JP2001004278A (en) * 1999-06-18 2001-01-12 Shizuoka Gas Kk Dryer and heater

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104180523A (en) * 2014-08-19 2014-12-03 清华大学 Flue gas waste heat recovery unit
CN104180523B (en) * 2014-08-19 2017-03-01 清华大学 A kind of flue gas waste heat recovery apparatus
KR101709867B1 (en) * 2015-09-24 2017-02-23 한국전력공사 Apparatus for capturing of carbon dioxide
KR102067605B1 (en) 2019-10-18 2020-01-17 미르지엔아이 주식회사 solar-powered air purification and dehumidification device

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