CN103245159A - Energy-saving and dehumidifying system of screw refrigerator - Google Patents
Energy-saving and dehumidifying system of screw refrigerator Download PDFInfo
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- CN103245159A CN103245159A CN2012100301936A CN201210030193A CN103245159A CN 103245159 A CN103245159 A CN 103245159A CN 2012100301936 A CN2012100301936 A CN 2012100301936A CN 201210030193 A CN201210030193 A CN 201210030193A CN 103245159 A CN103245159 A CN 103245159A
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Abstract
The invention provides an energy-saving and dehumidifying system of a screw refrigerator, and relates to the technical field of industrial dehumidifying and energy saving, in particular to an energy-saving and dehumidifying system of a screw refrigerator. A subcooler (10) is arranged between a dehumidifying rolling wheel (3) and a main fan (4). A screw refrigerating compressor (8), condensing agent (9), the subcooler (10), a liquid reservoir (11), a first throttle valve (14) and a second throttle valve (15) are connected to a loop of one end of an evaporator (2) sequentially. An economizer (12) is arranged at the connection of the liquid reservoir (11) and the second throttle valve (15). The subcooler and the economizer are adopted in a screw-type compression refrigeration circulation subsystem to reduce energy consumption of a rear heater and increase energy efficiency ratio of the refrigeration circulation system, so that entire dehumidifier system energy consumption is obviously reduced, system capacity is also significantly reduced, and the purposes of energy saving and emission reduction are achieved.
Description
Technical field:
The present invention relates to the energy-conservation field of energy-saving technology of industry dehumidifying, be specifically related to a kind of energy-saving dehumidifier system of screw refrigerator.
Background technology:
The quality of painting operation work quality is relevant with many factors, depends on the air humidity of construction period to a great extent.Relative humidity is too high when construction may cause the painted surface dewfall, and the external coating of dew is being arranged, and can cause the corrosion of material and reduce coating's adhesion.If the higher performance that also may damage coating of humidity between the coating dry period, for example prolong drying time, the finish paint loss of gloss turns white, the chemical reaction of two-component coating is postponed.
In order to improve the coating process quality, adopt industrial dehumidifier that surrounding air is carried out removal moisture drying usually.The common used in industry dehumidifier mainly contains cooled dehumidifier unit and wheel changes dehumidifier on the market, and wherein cooled dehumidifier unit is to adopt mechanically refrigerated method cooling air, makes air themperature be lower than dew-point temperature and separates out moisture.When indoor humid air stream through surface cooler, contact with its surface, owing to the surface cooler surface temperature is lower than the dew-point temperature of humid air, airborne moisture cooling condenses into water droplet, be gathered in the water spraying tray and discharge, temperature and the water capacity of air are reduced simultaneously, thereby reach the purpose of dehumidifying.But its humidity can not satisfy requirements at the higher level, when the air-treatment that low humidity is required, certainly will make the surface cooler temperature fall very lowly, when surface temperature is lower than zero degree, the easy frosting of cooling coil, dehumidifying effect descends, energy consumption increases, even can't operate as normal, and very uneconomical.In order to adapt to the requirement that throughout the year air is dehumidified, adopt rotary dehumidifier to cooperate the combined type dehumidifier of general freeze drying equipment usually.The employing freeze drying of combined type dehumidifier and rotary wheel dehumidifying are combined, can utilize advantage separately like this: freeze drying is the dehumidification rate height at high temperature, and rotary wheel dehumidifying wet-out property is good at low temperatures, and after the dehumidifying higher temperature rise is arranged, can remedy the lower deficiency of air themperature after the freeze drying like this.
The system of conventional type combined type dehumidifier is under the effect of main air blower 4, and the temperature that the environment humid air heats to requirement through the adsorption and dehumidification in the adsorption dry district of filter 1 filtration, evaporimeter 2 freeze dryings, desiccant wheel 3, finally by post-heater 5 becomes dry air and sends into the operation area.Because the surface temperature of evaporimeter 2 is lower than the dew-point temperature of air, the air dewfall that is condensed has reached the function of freeze drying.Desiccant wheel 3 utilizes adsorbent to absorb airborne moisture in low temperature, when high temperature the moisture that absorbs is discharged, and reaches the function of circulating dehumidification.Above-mentioned two kinds of dehumidification modes are combined and have just been constituted the combined type dehumidifier.
The main air of handling also needs post-heater to heat to meet the requirements of temperature behind process freeze drying and rotary wheel dehumidifying.Usually the post-heater of dehumidifier adopts high-quality electric energy to heat, and the electric energy that consumes accounts for about 30% of whole system energy consumption, is the main power consumption parts of dehumidifier.Therefore, the combined type dehumidifier of this conventional type need consume a large amount of high-quality electric energy and produce heat, causes the high shortcoming of energy waste and running cost.
Summary of the invention:
The energy-saving dehumidifier system that the purpose of this invention is to provide a kind of screw refrigerator, it reduces the Energy Efficiency Ratio of post-heater energy consumption, raising cooling cycle system by adopt subcooler and economizer in screw compression refrigeration cycle subsystem, the system energy consumption of whole dehumidifier is obviously reduced, the installed capacity of system also obviously reduces, and plays the purpose of energy-saving and emission-reduction.
In order to solve the existing problem of background technology, the present invention is by the following technical solutions: it comprises filter 1, evaporimeter 2, desiccant wheel 3, main air blower 4, post-heater 5, regenerative heater 6, regeneration blower fan 7, and it also comprises screw type refrigerating compressor 8, condensing agent 9, subcooler 10, liquid reservoir 11, economizer 12, first throttle valve 14 and second choke valve 15; Be provided with subcooler 10 between desiccant wheel 3 and the main air blower 4, be connected with screw type refrigerating compressor 8, condensing agent 9, subcooler 10, liquid reservoir 11, first throttle valve 14 and second choke valve 15 on the circulation road of evaporimeter 2 one ends in turn, also be provided with economizer 12 between the junction of liquid reservoir 11 and second choke valve 15.
Described economizer 12 two ends also connect first throttle valve 14 and screw type refrigerating compressor 8 respectively.
/ 4th places, described desiccant wheel 3 upper ends are the renewing zone, and other 3/4ths places are dry section; And the renewing zone is connected with regenerative heater 6, and the dry section both sides connect evaporimeter 2 and main air blower 4 respectively.
The present invention has the following advantages: the one, and utilize the subcooler of screw bolt refrigerating machine to carry out the back heating to handling air, reduce the power consumption that conventional dehumidifier utilizes electric heater, subcooler also plays the effect that improves refrigerant system capacity simultaneously; The 2nd, in screw compression refrigeration cycle subsystem, adopt economizer to improve the refrigerant mass fluxes of cooling cycle system, improve refrigerating capacity, thereby improve the Energy Efficiency Ratio of kind of refrigeration cycle, correspondingly reduced the configuration of screw compression refrigeration cycle subsystem.By above-mentioned two kinds of measures the system energy consumption of whole dehumidifier is obviously reduced, the installed capacity of system also reduces, and has played the purpose of energy-saving and emission-reduction.With conventional dehumidifier comparison, during the dehumidifier system of screw refrigerator of the present invention, only need to adopt the 60P compressor.The primary air processing subsystem of dehumidifier can save energy 32.4%, has the considerable energy saving characteristic, and the user uses more economically, meets the policy guidance of national energy-saving and emission-reduction.
Description of drawings:
Fig. 1 is structural representation of the present invention.
The specific embodiment:
Referring to Fig. 1, this specific embodiment is by the following technical solutions: it comprises filter 1, evaporimeter 2, desiccant wheel 3, main air blower 4, post-heater 5, regenerative heater 6, regeneration blower fan 7, and it also comprises screw type refrigerating compressor 8, condensing agent 9, subcooler 10, liquid reservoir 11, economizer 12, first throttle valve 14 and second choke valve 15; Be provided with subcooler 10 between desiccant wheel 3 and the main air blower 4, be connected with screw type refrigerating compressor 8, condensing agent 9, subcooler 10, liquid reservoir 11, first throttle valve 14 and second choke valve 15 on the circulation road of evaporimeter 2 one ends in turn, also be provided with economizer 12 between the junction of liquid reservoir 11 and second choke valve 15.
Described economizer 12 two ends also connect first throttle valve 14 and screw type refrigerating compressor 8 respectively.
/ 4th places, described desiccant wheel 3 upper ends are the renewing zone, and other 3/4ths places are dry section; And the renewing zone is connected with regenerative heater 6, and the dry section both sides connect evaporimeter 2 and main air blower 4 respectively.
Under the effect of main air blower 4, enter evaporimeter 2 again after at first filtering through filter 1 from the humid air of environment and carry out freeze drying; Then, primary air enters subcooler 10 and is heated after the dehumidifying of the adsorption dry district of desiccant wheel 3, and last primary air becomes dry air through main air blower 4 and post-heater 5 and enters the operation area.Wherein, the cold that screw compression refrigeration cycle subsystem produces is lowered the temperature, is dehumidified by 2 pairs of surrounding airs of evaporimeter, the a part of heat that produces carries out the back heating by 10 pairs of air of subcooler, economizer can be regulated the refrigerant flow of refrigeration system automatically, improves the Energy Efficiency Ratio of refrigeration system.
It is as follows that desiccant wheel regeneration adds the air handling process of thermal sub-system: under the effect of regeneration blower fan 7, surrounding air is at first through regenerative heater 6 heating, regenerate to runner in the renewing zone that enters desiccant wheel then, the air of final high temperature high humidity is discharged through regeneration blower fan 7.The adsorbent desorb under the effect of high temperature air that absorbs moisture discharges, and moisture is discharged with air, and adsorbent obtains regeneration.
The present invention has the following advantages: the one, and utilize the subcooler of screw bolt refrigerating machine to carry out the back heating to handling air, reduce the power consumption that conventional dehumidifier utilizes electric heater, subcooler also plays the effect that improves refrigerant system capacity simultaneously; The 2nd, in screw compression refrigeration cycle subsystem, adopt economizer to improve the refrigerant mass fluxes of cooling cycle system, improve refrigerating capacity, thereby improve the Energy Efficiency Ratio of kind of refrigeration cycle, correspondingly reduced the configuration of screw compression refrigeration cycle subsystem.By above-mentioned two kinds of measures the system energy consumption of whole dehumidifier is obviously reduced, the installed capacity of system also reduces, and has played the purpose of energy-saving and emission-reduction.With conventional dehumidifier comparison, during the dehumidifier system of screw refrigerator of the present invention, only need to adopt the 60P compressor.The primary air processing subsystem of dehumidifier can save energy 32.4%, has the considerable energy saving characteristic, and the user uses more economically, meets the policy guidance of national energy-saving and emission-reduction.
Embodiment: for the ease of comparing, selecting typical primary air flow is 12000m
3The combined type dehumidifier of/h is analyzed, and the primary air air-out of processing requires to reach Td (dry-bulb temperature)≤25 ± 3 ℃, RH (relative humidity)≤45%.For the conventional type dehumidifier, refrigeration compressor adopts 90P compressor (as the screw compressor CSH7571-90 of bitzer); When adopting the dehumidifier system of screw refrigerator of the present invention, by calculating and test draws the needed 60P of being compressor (as the screw compressor CSH6571-60 of the band economizer that adopts bitzer company).The weather conditions in above Haiti district summer: Td=35 ℃, RH=70% is example, contrasts the energy consumption of the dehumidifier of conventional dehumidifier and screw refrigerator of the present invention, analyzes the energy-saving effect (seeing Table 1) of dehumidifier.
Table 1: the energy-saving dehumidifier of screw refrigerator and the conventional type dehumidifier energy consumption comparative analysis on the primary air processing subsystem
As can be seen from Table 1: adopt the dehumidifier of screw refrigerator of the present invention, the configuration of refrigeration compressor is reduced to 60P by 90P, and the energy consumption on the primary air processing subsystem has saved 32.4%.The simultaneity factor capacity configuration has reduced 24kW.When installed capacity reduced, to user's also reduction of distribution capacity requirement, corresponding subsidies of power supply and charge for electric distribution also reduced.
The comparison of annual power consumption and the electricity charge:
The working time of setting dehumidifier summer condition in every year is three months, and be working day 22 days every months, and 8 hours every days, two kinds of dehumidifiers are calculated and contrasted to duty thus at the power consumption in summer, and are as shown in table 2 below.
Table 2: the power consumption and running cost contrast in summer of the primary air processing subsystem of conventional dehumidifier and dehumidifier of the present invention
Remarks: wherein the electricity charge are 1.0 yuan/kWh of the average price estimations by the Shanghai City commercial power, and the power supply of saving and charge for electric distribution calculate according to the 550 yuan/KVA of subsides expense standard in area, Shanghai.
By above-mentioned example as can be seen: the dehumidifier system of screw refrigerator adopts subcooler and economizer, can significantly reduce system power consumption and equipment installed capacity, saves running cost and power supply and charge for electric distribution, has remarkable energy saving effect.
Claims (3)
1. the energy-saving dehumidifier system of a screw refrigerator, it comprises filter (1), evaporimeter (2), desiccant wheel (3), main air blower (4), post-heater (5), regenerative heater (6), regeneration blower fan (7), it is characterized in that it also comprises screw type refrigerating compressor (8), condensing agent (9), subcooler (10), liquid reservoir (11), economizer (12), first throttle valve (14) and second choke valve (15); Be provided with subcooler (10) between desiccant wheel (3) and the main air blower (4), be connected with screw type refrigerating compressor (8), condensing agent (9), subcooler (10), liquid reservoir (11), first throttle valve (14) and second choke valve (15) on the circulation road of evaporimeter (2) one ends in turn, also be provided with economizer (12) between the junction of liquid reservoir (11) and second choke valve (15).
2. the energy-saving dehumidifier system of a kind of screw refrigerator according to claim 1 is characterized in that described economizer (12) two ends also connect first throttle valve (14) and screw type refrigerating compressor (8) respectively.
3. the energy-saving dehumidifier system of a kind of screw refrigerator according to claim 1 is characterized in that 1/4th places, described desiccant wheel (3) upper end are the renewing zone, and other 3/4ths places are dry section; And the renewing zone is connected with regenerative heater (6), and the dry section both sides connect evaporimeter (2) and main air blower (4) respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100301936A CN103245159A (en) | 2012-02-10 | 2012-02-10 | Energy-saving and dehumidifying system of screw refrigerator |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012100301936A CN103245159A (en) | 2012-02-10 | 2012-02-10 | Energy-saving and dehumidifying system of screw refrigerator |
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| CN103245159A true CN103245159A (en) | 2013-08-14 |
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| CN2012100301936A Pending CN103245159A (en) | 2012-02-10 | 2012-02-10 | Energy-saving and dehumidifying system of screw refrigerator |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104548873A (en) * | 2013-10-09 | 2015-04-29 | 株式会社西部技研 | Dehumidification device and refrigerator or freezer employing same |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004116870A (en) * | 2002-09-25 | 2004-04-15 | Sanyo Electric Co Ltd | Dehumidifier |
| US20050138942A1 (en) * | 2003-12-24 | 2005-06-30 | Caterpillar, Inc. | Air-treatment system with secondary circuit |
| CN101294754A (en) * | 2008-05-26 | 2008-10-29 | 刘雄 | Multifunctional air conditioner heat pump |
| CN101672502A (en) * | 2009-06-19 | 2010-03-17 | 上海天菡空气处理设备有限公司 | System of heat pump regeneration heating-type energy-saving dehumidifier |
-
2012
- 2012-02-10 CN CN2012100301936A patent/CN103245159A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004116870A (en) * | 2002-09-25 | 2004-04-15 | Sanyo Electric Co Ltd | Dehumidifier |
| US20050138942A1 (en) * | 2003-12-24 | 2005-06-30 | Caterpillar, Inc. | Air-treatment system with secondary circuit |
| CN101294754A (en) * | 2008-05-26 | 2008-10-29 | 刘雄 | Multifunctional air conditioner heat pump |
| CN101672502A (en) * | 2009-06-19 | 2010-03-17 | 上海天菡空气处理设备有限公司 | System of heat pump regeneration heating-type energy-saving dehumidifier |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104548873A (en) * | 2013-10-09 | 2015-04-29 | 株式会社西部技研 | Dehumidification device and refrigerator or freezer employing same |
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Application publication date: 20130814 |