CN100458292C - Refrigerating unit of air condition by dehumidifying, evaporative cooling solution - Google Patents

Refrigerating unit of air condition by dehumidifying, evaporative cooling solution Download PDF

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CN100458292C
CN100458292C CNB2007100172099A CN200710017209A CN100458292C CN 100458292 C CN100458292 C CN 100458292C CN B2007100172099 A CNB2007100172099 A CN B2007100172099A CN 200710017209 A CN200710017209 A CN 200710017209A CN 100458292 C CN100458292 C CN 100458292C
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heat exchanger
pipeline
solution
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cooling
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CN101004277A (en
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刘雄
年卫琦
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Xian University of Architecture and Technology
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Xian University of Architecture and Technology
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Abstract

The present invention discloses a solution dehumidification evaporation cooling air-conditioning refrigeration equipment. It includes compressor, evaporator, throttling mechanism, solution cooling device, regenerator, strong solution pump, dehumidifier dilute solution pump and heater. It is characterized by that a direct contact type heat exchanger and an evaporation type heat exchanger are added in said equipment.

Description

Refrigerating unit of air condition by dehumidifying, evaporative cooling solution
Technical field
The present invention relates to a kind of refrigerating unit of air condition by dehumidifying, evaporative cooling solution, belong to refrigeration technology field.
Background technology
At present, the operation principle of Chang Gui liquid desiccant air conditioning refrigerating plant as shown in Figure 1.It is made up of following several parts:
1. air treatment system
It is made up of dehumidifier 17, evaporimeter 3.Dehumidifier 17 links to each other by air channel 53 with evaporimeter 3, forms an air flue, and air is dehumidified therein and cools off.
During work, processed air is introduced into dehumidifier 17 and is dehumidified, meet the requirements of humidity after, enter evaporimeter 3 cooling that is cooled again, meet the requirements of temperature after, send into air-conditioned room again.
2. solution dehumidification and regenerative system
It is made up of solution cooler 11, regenerator 13, concentrated solution pump 14, solution heat exchanger 15, dehumidifier 17, weak solution pump 18, heater 21; Also can be: solution cooler 11 be positioned in dehumidifier 17 inside, and heater 21 is positioned in regenerator 13 inside.
In solution dehumidification and regenerative system, regenerator 13 links to each other with concentrated solution pump 14, concentrated solution pump 14 links to each other with solution heat exchanger 15, solution heat exchanger 15 links to each other with solution cooler 11 by pipeline 16, solution cooler 11 links to each other with dehumidifier 17, dehumidifier 17 links to each other with weak solution pump 18, weak solution pump 18 links to each other with solution heat exchanger 15 by pipeline 19, solution heat exchanger 15 links to each other with heater 21 by pipeline 20, heater 21 links to each other with regenerator 13, form a solution circulation loop, realize dehumidifying air.
In dehumidifier 17, concentrated solution directly contacts with air, carries out the wet exchange of heat, absorb airborne moisture after, become weak solution.After weak solution goes out dehumidifier 17, through 18 pressurizations of weak solution pump, by pipeline 19, be admitted in the solution heat exchanger 15, carry out indirect heat exchange with the high temperature concentrated solution therein, absorb its heat after pipeline 20, enter heater 21 and be further heated, after temperature reaches requirement, enter regenerator 13 and be reproduced, after emitting moisture, become concentrated solution.Concentrated solution enters solution heat exchanger 15 and carries out indirect heat exchange with weak solution after 14 pressurizations of concentrated solution pump, emits heat, temperature enters solution cooler 11 through pipeline 16 after reducing, and carries out indirect heat exchange with cooling water, emit heat, temperature enters dehumidifier 17 after further reducing.So far, solution has been finished once circulation.
In system, the effect of solution heat exchanger 15 is in order to improve the efficient of solution dehumidification and regenerative system. because in solution heat exchanger 15, carry out indirect heat exchange between high temperature concentrated solution and the weak solution, make the temperature of concentrated solution reduce, and the temperature of weak solution raises, and therefore, has reduced the heating load of weak solution in heater 21 on the one hand, also reduced the cooling load of concentrated solution in solution cooler 11 on the other hand, so improved the efficient of solution dehumidification and regenerative system.
3. refrigeration system
It is made up of compressor 1, water-cooled condenser 5, throttle mechanism 4, evaporimeter 3.
In refrigeration system, compressor 1 links to each other with water-cooled condenser 5 by pipeline 6, and water-cooled condenser 5 links to each other with throttle mechanism 4, throttle mechanism 4 links to each other with evaporimeter 3, evaporimeter 3 links to each other with compressor 1 by pipeline 2, forms a kind of refrigeration cycle loop, realizes the cooling to air.
After compressed machine 1 compression of low-temperature low-pressure refrigerant steam, become the high-temperature high-pressure refrigerant superheated vapor, through pipeline 6, enter water-cooled condenser 5, carry out indirect heat exchange with cooling water, emit heat after, be condensed into highly pressurised liquid, liquid is after throttle mechanism 4 throttlings, become the low-temp low-pressure gas-fluid two-phase mixture, enter evaporimeter 3, carried out heat exchange by dehumidified air with dehumidifier 17 comes out, after its temperature that is cooled to require, send into air-conditioned room again, and behind the heat of cold-producing medium absorption air, become the low-temperature low-pressure refrigerant steam, through pipeline 2, enter compressor 1 and be compressed.So far cold-producing medium is finished kind of refrigeration cycle one time.
4. solution cooling system
It is made up of cooling tower 22, cooling water circulating pump 7, solution cooler 11.
In the solution cooling system, cooling tower 22 links to each other with cooling water circulating pump 7, and cooling water circulating pump 7 links to each other with solution cooler 11 by pipeline 12, and solution cooler 11 links to each other with cooling tower 22 by pipeline 10, forms a cooling water circulation loop.
The cooling water that comes out from cooling tower 22, after cooling water circulating pump 7 pressurizations, a part of cooling water wherein is through pipeline 12, enter solution cooler 11, carry out indirect heat exchange with the concentrated solution that is about to enter dehumidifier 17, it is cooled, and after cooling water temperature raises, through pipeline 10, get back to cooling tower 22 again.So far cooling water has been finished once the cool cycles to solution.
5. refrigerant cools system
It is made up of cooling tower 22, cooling water circulating pump 7, water-cooled condenser 5.
In the refrigerant cools system, cooling tower 22 links to each other with cooling water circulating pump 7, and cooling water circulating pump 7 links to each other with water-cooled condenser 5 by pipeline 8, and water-cooled condenser 5 links to each other with cooling tower 22 by pipeline 9, forms a cooling water circulation loop.
The cooling water that comes out from cooling tower 22, after cooling water circulating pump 7 pressurizations, a part of cooling water wherein is through pipeline 8, enter water-cooled condenser 5, the high-temperature high-pressure refrigerant superheated vapor of discharging with compressor 1 carries out indirect heat exchange, absorbs its heat, it is condensed into liquid, and after the cooling water temperature rising,, get back to cooling tower 22 through pipeline 9.So far cooling water has been finished once the cool cycles to cold-producing medium.
This shows, in the water-cooled condenser 5 and solution cooler 11 of the liquid desiccant air conditioning refrigerating plant of routine, cooling water utilizes the indirect heat exchange mode that cold-producing medium and solution are cooled off, because cooling water is to rely on sensible heat to carry out heat exchange, therefore, the consumption of cooling water is very big. in addition, owing in water-cooled condenser 5, exist heat transfer temperature difference between cooling water and the cold-producing medium, therefore, this type of cooling to cold-producing medium is compared with vapor cooling system, the condensation temperature of refrigeration system is higher. and in view of above reason, the performance of conventional liquid desiccant air conditioning refrigerating plant is not high, and water loss is bigger, equipment is also very huge, is not easy to miniaturization.
Summary of the invention
Technical problem to be solved by this invention is: a kind of refrigerating unit of air condition by dehumidifying, evaporative cooling solution is provided, and this device cooling water consumption is little, and utilizes cold-producing medium that air, solution and cold-producing medium self are cooled off.This apparatus structure compactness is convenient to miniaturization.
For the technical scheme that solves the problems of the technologies described above technical solution problem of the present invention has following three kinds:
First kind of scheme is: it comprises compressor (1), evaporimeter (3), throttle mechanism (4), solution cooler (11), regenerator (13), concentrated solution pump (14), dehumidifier (17), weak solution pump (18) and heater (21), it is characterized in that: further comprising direct heat exchanger (24) and evaporative heat exchanger (27); Described evaporative heat exchanger (27) is provided with one group of cooling coil (43), described direct heat exchanger (24) links to each other with the port of export of compressor (1) by A pipeline (23) respectively, link to each other by the port of export of F pipeline (32) with solution cooler (11), link to each other with the port of export of the cooling coil (43) of described evaporative heat exchanger (27) by C pipeline (29), B pipeline (28), link to each other with cooling coil (43) arrival end of described evaporative heat exchanger (27) by working medium pump (26); Cooling coil (43) port of export of described evaporative heat exchanger (27) links to each other with the arrival end of solution cooler (11) by B pipeline (28), D pipeline (30), links to each other with the arrival end of throttle mechanism (4) by B pipeline (28), E pipeline (31).
Second kind of scheme is: it comprises compressor (1), evaporimeter (3), throttle mechanism (4), solution cooler (11), regenerator (13), concentrated solution pump (14), dehumidifier (17), weak solution pump (18) and heater (21), and it also comprises direct heat exchanger (24) and evaporative heat exchanger (27); Described evaporative heat exchanger (27) is provided with one group of cooling coil (43) and one group of condenser coil (44), described direct heat exchanger (24) links to each other with condenser coil (44) port of export of evaporative heat exchanger (27) by H pipeline (42) respectively, link to each other by the port of export of F pipeline (32) with solution cooler (11), link to each other with the port of export of the cooling coil (43) of described evaporative heat exchanger (27) by C pipeline (29), B pipeline (28), link to each other with cooling coil (43) arrival end of described evaporative heat exchanger (27) by working medium pump (26); The arrival end of the condenser coil (44) of described evaporative heat exchanger (27) links to each other with the port of export of compressor (1) by G pipeline (41), cooling coil (43) port of export of described evaporative heat exchanger (27) links to each other with the arrival end of solution cooler (11) by B pipeline (28), D pipeline (30), links to each other with the arrival end of throttle mechanism (4) by B pipeline (28), E pipeline (31).
The third scheme is: it comprises compressor (1), evaporimeter (3), throttle mechanism (4), solution cooler (11), regenerator (13), concentrated solution pump (14), dehumidifier (17), weak solution pump (18) and heater (21), it is characterized in that: further comprising direct heat exchanger (24) and evaporative heat exchanger (27); Described evaporative heat exchanger (27) is provided with one group of cooling coil (43) and one group of condenser coil (44), described direct heat exchanger (24) links to each other with the port of export of solution cooler (11) by F pipeline (32) respectively, link to each other with the port of export of the cooling coil (43) of described evaporative heat exchanger (27) by C pipeline (29), B pipeline (28), link to each other with cooling coil (43) arrival end of described evaporative heat exchanger (27) by working medium pump (26); The arrival end of the condenser coil (44) of described evaporative heat exchanger (27) links to each other with the port of export of compressor (1) by G pipeline (41), cooling coil (43) port of export of described evaporative heat exchanger (27) links to each other with the arrival end of solution cooler (11) by B pipeline (28), D pipeline (30), and the port of export of the condenser coil (44) of described evaporative heat exchanger (27) links to each other with the arrival end of throttle mechanism (4) by I pipeline (45).
In order better to distribute refrigerant flow, control valve (25) is set on the described C pipeline (29).
The invention has the beneficial effects as follows:
1. realized cooling simultaneously with cold-producing medium, reduced the middle heat exchange link of cooling water, made compact conformation, the device miniaturization of being more convenient for air, solution and cold-producing medium itself.
2. in evaporative heat exchanger, utilize the evaporation of recirculated cooling water to take away cold-producing medium institute liberated heat, make refrigerant cools and condensation, so the consumption of cooling water is than water-cooled condenser much less, so, reduced the consumption of cooling water significantly.
3. compare with water-cooled condenser, under identical operating mode, use evaporative heat exchanger, the condensation temperature of kind of refrigeration cycle is lower, therefore, has reduced the power consumption of compressor.
4. in solution cooler, refrigerant liquid utilizes the latent heat of vaporization that solution is cooled off, and therefore cools off with the use cooling water and compares, and required refrigerant liquid flow is less, simultaneously also strengthened heat transfer temperature difference, so reduced the size of pipeline and solution cooler.
5. the present invention is applicable to the air-conditioning refrigeration system of industry and civil buildings, is specially adapted to humidity is had the middle-size and small-size air-conditioning refrigeration system of requirement.
Description of drawings
Fig. 1 is conventional liquid desiccant air conditioning refrigerating plant structural representation;
Fig. 2 is first kind of scenario-frame schematic diagram of the present invention;
Fig. 3 is second kind of scenario-frame schematic diagram of the present invention;
Fig. 4 is the third scenario-frame schematic diagram of the present invention.
The specific embodiment
Below in conjunction with accompanying drawing the present invention is described in further detail:
One, first kind of embodiment of the present invention:
As shown in Figure 2, whole device is made up of following several parts: 1. air treatment system; 2. solution dehumidification and regenerative system; 3. refrigeration system; 4. solution cooling system; 5. refrigerant cools system.The capital equipment of each several part is as follows:
1. air treatment system
The composition of this part and flow process and conventional system are identical.
2. solution dehumidification and regenerative system
The composition of this part is identical with conventional system with flow process.In the cyclic process, unique difference is: cold-producing medium has replaced cooling water in solution cooler 11, as the cooling medium of concentrated solution.
3. refrigeration system
Form by direct heat exchanger 24, working medium pump 26, evaporative heat exchanger 27, throttle mechanism 4, evaporimeter 3 and compressor 1.
In this programme, in the evaporative heat exchanger 27, have only one group of cooling coil 43, what refrigerant liquid carried out therein is the sensible heat heat exchange.
In refrigeration system, direct heat exchanger 24 links to each other with working medium pump 26, working medium pump 26 links to each other with the cooling coil 43 of evaporative heat exchanger 27, the cooling coil 43 of evaporative heat exchanger 27 links to each other with throttle mechanism 4 by B pipeline 28, E pipeline 31, throttle mechanism 4 links to each other with evaporimeter 3, and evaporimeter 3 links to each other with compressor 1 by J pipeline 2, and compressor 1 links to each other with direct heat exchanger 24 by A pipeline 23, form a kind of refrigeration cycle loop, realize cooling air.
The refrigerant liquid that comes out from direct heat exchanger 24 after working medium pump 26 pressurizations, enters in the cooling coil 43 of evaporative heat exchanger 27, carries out indirect heat exchange with air and recirculated cooling water, emit heat after, by cold excessively.After crossing cold refrigerant liquid and coming out from the cooling coil 43 of evaporative heat exchanger 27, wherein a part enters throttle mechanism 4 by throttling through B pipeline 28, E pipeline 31, after becoming the low-temp low-pressure gas-fluid two-phase mixture, enter evaporimeter 3, carried out heat exchange with dehumidifier 17 comes out by dehumidified air, the temperature that makes it be cooled to require. after cold-producing medium absorbs its heat, become the low-temperature low-pressure refrigerant steam, behind J pipeline 2, enter compressor 1, be compressed into the high-temperature high-pressure refrigerant superheated vapor,, get back to direct heat exchanger 24 again through A pipeline 23.So far cold-producing medium is finished kind of refrigeration cycle one time.
4. solution cooling system
Form by direct heat exchanger 24, working medium pump 26, evaporative heat exchanger 27 and solution cooler 11.
In the solution cooling system, direct heat exchanger 24 links to each other with working medium pump 26, working medium pump 26 links to each other with the cooling coil 43 of evaporative heat exchanger 27, the cooling coil 43 of evaporative heat exchanger 27 links to each other with solution cooler 11 by B pipeline 28, D pipeline 30, solution cooler 11 links to each other with direct heat exchanger 24 by F pipeline 32, form a cold-producing medium circulation loop, realize cooling solution.
The refrigerant liquid that comes out from direct heat exchanger 24 after working medium pump 26 pressurizations, enters in the cooling coil 43 of evaporative heat exchanger 27, carries out indirect heat exchange with air and recirculated cooling water, emit heat after, by cold excessively.After crossing cold refrigerant liquid and coming out from the cooling coil 43 of evaporative heat exchanger 27, wherein a part enters solution cooler 11 through B pipeline 28, D pipeline 30, carry out heat exchange with the concentrated solution that is about to enter dehumidifier 17, make its cooling, behind its heat of refrigerant liquid bulk absorption, become gas-fluid two-phase mixture,, get back to direct heat exchanger 24 through F pipeline 32.So far cold-producing medium is finished once the cool cycles to solution.
5. refrigerant cools system
Form by direct heat exchanger 24, working medium pump 26, evaporative heat exchanger 27 and control valve 25.
In the refrigerant cools system, direct heat exchanger 24 links to each other with working medium pump 26, working medium pump 26 links to each other with the cooling coil 43 of evaporative heat exchanger 27, the cooling coil 43 of evaporative heat exchanger 27 links to each other with control valve 25 by B pipeline 28, C pipeline 29, control valve 25 links to each other with direct heat exchanger 24, form a cold-producing medium circulation loop, realize cooling cold-producing medium self.
The refrigerant liquid that comes out from direct heat exchanger 24 after working medium pump 26 pressurizations, enters in the cooling coil 43 of evaporative heat exchanger 27, carries out indirect heat exchange with air and recirculated cooling water, emit heat after, by cold excessively.After crossing cold refrigerant liquid and coming out from the cooling coil 43 of evaporative heat exchanger 27, wherein a part is through B pipeline 28, C pipeline 29, control valve 25, get back to direct heat exchanger 24 again, the cold-producing medium of getting back to direct heat exchanger 24 with refrigeration system and solution cooling system carries out direct contact heat-exchanging, make them be condensed into saturated liquid, himself also becomes saturated liquid because of absorbing heat.So far cold-producing medium is finished once the cool cycles to self.
In native system, the effect of control valve 25 is for better assignment system cryogen fluid flow, prevents the refrigerant liquid short circuit, and most of the inflow in the direct heat exchanger 24 makes solution cooler 11 can not get required flow.
In refrigeration system, solution cooling system, refrigerant cools system, their common part is direct heat exchanger 24, working medium pump 26 and evaporative heat exchanger 27, by these three equipment they have been linked to be an integral body, have utilized cold-producing medium to realize cooling air, solution, cold-producing medium self.
Two, second kind of embodiment of the present invention:
As shown in Figure 3, whole device is made up of following several parts: 1. air treatment system; 2. solution dehumidification and regenerative system; 3. refrigeration system; 4. solution cooling system; 5. refrigerant cools system.The capital equipment of each several part is as follows:
1. air treatment system
The composition of this part and flow process and conventional system are identical.
2. solution dehumidification and regenerative system
The composition of this part is identical with conventional system with flow process.In the cyclic process, unique difference is: cold-producing medium has replaced cooling water in solution cooler 11, as the cooling medium of concentrated solution.
3. refrigeration system
Form by direct heat exchanger 24, working medium pump 26, evaporative heat exchanger 27, throttle mechanism 4, evaporimeter 3 and compressor 1.
The difference of evaporative heat exchanger 27 is in the evaporative heat exchanger 27 and first scheme: two groups of coil pipes are arranged in evaporative heat exchanger 27, one group of cooling coil 43, one group of condenser coil 44. is in cooling coil 43, what refrigerant liquid carried out is the sensible heat heat exchange, act on identical with first scheme. in condenser coil 44, the high-temperature high-pressure refrigerant superheated vapor is a condensation heat, is condensed into refrigerant liquid by the high-temperature high-pressure refrigerant superheated vapor.
In refrigeration system, direct heat exchanger 24 links to each other with working medium pump 26, working medium pump 26 links to each other with the cooling coil 43 of evaporative heat exchanger 27, the cooling coil 43 of evaporative heat exchanger 27 is by B pipeline 28, E pipeline 31 links to each other with throttle mechanism 4, throttle mechanism 4 links to each other with evaporimeter 3, evaporimeter 3 links to each other with compressor 1 by J pipeline 2, compressor 1 links to each other with the condenser coil 44 of evaporative heat exchanger 27 by G pipeline 41, the condenser coil 44 of evaporative heat exchanger 27 links to each other with direct heat exchanger 24 by H pipeline 42, form a kind of refrigeration cycle loop, realize cooling air.
The refrigerant liquid that comes out from direct heat exchanger 24 after working medium pump 26 pressurizations, enters in the cooling coil 43 of evaporative heat exchanger 27, carries out indirect heat exchange with air and recirculated cooling water, emit heat after, by cold excessively.After crossing cold refrigerant liquid and coming out from the cooling coil 43 of evaporative heat exchanger 27, wherein a part is through B pipeline 28, E pipeline 31 enters throttle mechanism 4 by throttling, after becoming the low-temp low-pressure gas-fluid two-phase mixture, enter evaporimeter 3, carried out heat exchange with dehumidifier 17 comes out by dehumidified air, the temperature that makes it be cooled to require. after cold-producing medium absorbs its heat, become the low-temperature low-pressure refrigerant steam, behind J pipeline 2, enter compressor 1, be compressed into the high-temperature high-pressure refrigerant superheated vapor,, enter in the condenser coil 44 of evaporative heat exchanger 27 through G pipeline 41, carry out indirect heat exchange with air and recirculated cooling water, after emitting heat, be condensed into liquid, get back to direct heat exchanger 24 again through H pipeline 42.So far cold-producing medium is finished kind of refrigeration cycle one time.
4. solution cooling system
Form by direct heat exchanger 24, working medium pump 26, evaporative heat exchanger 27 and solution cooler 11.
In the solution cooling system, direct heat exchanger 24 links to each other with working medium pump 26, working medium pump 26 links to each other with the cooling coil 43 of evaporative heat exchanger 27, the cooling coil 43 of evaporative heat exchanger 27 links to each other with solution cooler 11 by B pipeline 28, D pipeline 30, solution cooler 11 links to each other with direct heat exchanger 24 by F pipeline 32, form a cold-producing medium circulation loop, realize cooling solution.
The refrigerant liquid that comes out from direct heat exchanger 24 after working medium pump 26 pressurizations, enters in the cooling coil 43 of evaporative heat exchanger 27, carries out indirect heat exchange with air and recirculated cooling water, emit heat after, by cold excessively.After crossing cold refrigerant liquid and coming out from the cooling coil 43 of evaporative heat exchanger 27, wherein a part enters solution cooler 11 through B pipeline 28, D pipeline 30, carry out heat exchange with the concentrated solution that is about to enter dehumidifier 17, make its cooling, behind its heat of refrigerant liquid bulk absorption, become gas-fluid two-phase mixture,, get back to direct heat exchanger 24 through F pipeline 32.So far cold-producing medium is finished once the cool cycles to solution.
5. refrigerant cools system
Form by direct heat exchanger 24, working medium pump 26, evaporative heat exchanger 27 and control valve 25.
In the refrigerant cools system, direct heat exchanger 24 links to each other with working medium pump 26, working medium pump 26 links to each other with the cooling coil 43 of evaporative heat exchanger 27, the cooling coil 43 of evaporative heat exchanger 27 links to each other with control valve 25 by B pipeline 28, C pipeline 29, control valve 25 links to each other with direct heat exchanger 24, form a cold-producing medium circulation loop, realize cooling cold-producing medium self.
The refrigerant liquid that comes out from direct heat exchanger 24 after working medium pump 26 pressurizations, enters in the cooling coil 43 of evaporative heat exchanger 27, carries out indirect heat exchange with air and recirculated cooling water, emit heat after, by cold excessively.After crossing cold refrigerant liquid and coming out from the cooling coil 43 of evaporative heat exchanger 27, wherein a part is through B pipeline 28, C pipeline 29, control valve 25, get back to direct heat exchanger 24 again, the cold-producing medium of getting back to direct heat exchanger 24 with refrigeration system and solution cooling system carries out direct contact heat-exchanging, all becomes saturated liquid.So far cold-producing medium is finished once the cool cycles to self.
Identical with first scheme, the effect of control valve 25 in system also is for better assignment system cryogen fluid flow, prevents the refrigerant liquid short circuit, and most of the inflow in the direct heat exchanger 24 makes solution cooler 11 can not get required flow.
In refrigeration system, solution cooling system, refrigerant cools system, their common part is direct heat exchanger 24, working medium pump 26 and evaporative heat exchanger 27, by these three equipment they have been linked to be an integral body, have utilized cold-producing medium to realize cooling air, solution, cold-producing medium self.
Three, the 3rd embodiment of the present invention
As shown in Figure 4, it is made up of following several parts: 1. air treatment system; 2. solution dehumidification and regenerative system; 3. refrigeration system; 4. solution cooling system; 5. refrigerant cools system. the capital equipment of each several part is as follows:
1. air treatment system
The composition of this part and flow process and conventional system are identical.
2. solution dehumidification and regenerative system
The composition of this part is identical with conventional system with flow process.In the cyclic process, unique difference is: cold-producing medium has replaced cooling water in solution cooler 11, as the cooling medium of concentrated solution.
3. refrigeration system
Form by compressor 1, evaporative heat exchanger 27, throttle mechanism 4 and evaporimeter 3.
Identical with alternative plan, the difference of evaporative heat exchanger 27 is in the evaporative heat exchanger 27 and first scheme: two groups of coil pipes are arranged in evaporative heat exchanger 27, one group of cooling coil 43, one group of condenser coil 44. is in cooling coil 43, what refrigerant liquid carried out is the sensible heat heat exchange. in condenser coil 44, the high-temperature high-pressure refrigerant superheated vapor is a condensation heat, is condensed into refrigerant liquid by the high-temperature high-pressure refrigerant superheated vapor.
In refrigeration system, compressor 1 links to each other with the condenser coil 44 of evaporative heat exchanger 27 by G pipeline 41, the condenser coil 44 of evaporative heat exchanger 27 links to each other with throttle mechanism 4 by I pipeline 45, throttle mechanism 4 links to each other with evaporimeter 3, evaporimeter 3 links to each other with compressor 1 by J pipeline 2, form a kind of refrigeration cycle loop, realize cooling air.
After compressed machine 1 compression of low-temperature low-pressure refrigerant steam, become the high-temperature high-pressure refrigerant superheated vapor, enter in the condenser coil 44 of evaporative heat exchanger 27 through G pipeline 41, in condenser coil 44, carry out indirect heat exchange, be condensed into liquid after emitting heat with air and recirculated cooling water.After refrigerant liquid comes out from the condenser coil 44 of evaporative heat exchanger 27, enter throttle mechanism 4 by throttling through I pipeline 45, become the low-temp low-pressure gas-fluid two-phase mixture, enter evaporimeter 3, carried out heat exchange with dehumidifier 17 comes out by dehumidified air, with its temperature that is cooled to require. after cold-producing medium absorbs its heat, become the low-temperature low-pressure refrigerant steam, through J pipeline 2, enter compressor 1 and be compressed.So far cold-producing medium is finished kind of refrigeration cycle one time.
4. solution cooling system
Form by direct heat exchanger 24, working medium pump 26, evaporative heat exchanger 27 and solution cooler 11.
In the solution cooling system, direct heat exchanger 24 links to each other with working medium pump 26, working medium pump 26 links to each other with the cooling coil 43 of evaporative heat exchanger 27, the cooling coil 43 of evaporative heat exchanger 27 links to each other with solution cooler 11 by B pipeline 28, D pipeline 30, solution cooler 11 links to each other with direct heat exchanger 24 by F pipeline 32, form a cold-producing medium circulation loop, realize cooling solution.
The refrigerant liquid that comes out from direct heat exchanger 24 after working medium pump 26 pressurizations, enters in the cooling coil 43 of evaporative heat exchanger 27, carries out indirect heat exchange with air and recirculated cooling water in cooling coil 43, emits behind the heat by cold excessively.After crossing cold refrigerant liquid and coming out from the cooling coil 43 of evaporative heat exchanger 27, wherein a part enters in the solution cooler 11 through B pipeline 28, D pipeline 30, carry out heat exchange with the concentrated solution that is about to enter dehumidifier 17, make its cooling, behind its heat of refrigerant liquid bulk absorption, become gas-fluid two-phase mixture,, get back to direct heat exchanger 24 through F pipeline 32.So far cold-producing medium is finished once the cool cycles to solution.
5. refrigerant cools system
Form by direct heat exchanger 24, working medium pump 26, evaporative heat exchanger 27 and control valve 25.
In the refrigerant cools system, direct heat exchanger 24 links to each other with working medium pump 26, working medium pump 26 links to each other with the cooling coil 43 of evaporative heat exchanger 27, the cooling coil 43 of evaporative heat exchanger 27 links to each other with control valve 25 by B pipeline 28, C pipeline 29, control valve 25 links to each other with direct heat exchanger 24, form a cold-producing medium circulation loop, realize cooling cold-producing medium self.
The refrigerant liquid that comes out from direct heat exchanger 24 after working medium pump 26 pressurizations, enters in the cooling coil 43 of evaporative heat exchanger 27, carries out indirect heat exchange with air and recirculated cooling water in cooling coil 43, emits behind the heat by cold excessively.After crossing cold refrigerant liquid and coming out from the cooling coil 43 of evaporative heat exchanger 27, wherein a part is through B pipeline 28, C pipeline 29, control valve 25, get back to direct heat exchanger 24 again, the cold-producing medium of getting back to direct heat exchanger 24 with the solution cooling system carries out direct contact heat-exchanging, make it be condensed into saturated liquid, himself also becomes saturated liquid because of absorbing heat.So far cold-producing medium is finished once the cool cycles to self.
Identical with first and second schemes, the effect of control valve 25 also is for better assignment system cryogen fluid flow, prevents the refrigerant liquid short circuit, and most of the inflow in the direct heat exchanger 24 makes solution cooler 11 can not get required flow.
In this scheme, the common part of refrigeration system, solution cooling system, refrigerant cools system is an evaporative heat exchanger 27.And the common part of solution cooling system, refrigerant cools system is direct heat exchanger 24, working medium pump 26 and evaporative heat exchanger 27.
In this programme, the cold-producing medium of refrigeration system and solution cooling system, refrigerant cools system is at two independently in the system, does not contact mutually. the cold-producing medium of solution cooling system, refrigerant cools system is in operation and can contain lubricating oil.

Claims (4)

1, a kind of refrigerating unit of air condition by dehumidifying, evaporative cooling solution, it comprises compressor (1), evaporimeter (3), throttle mechanism (4), solution cooler (11), regenerator (13), concentrated solution pump (14), dehumidifier (17), weak solution pump (18) and heater (21), it is characterized in that: further comprising direct heat exchanger (24) and evaporative heat exchanger (27); Described evaporative heat exchanger (27) is provided with one group of cooling coil (43), described direct heat exchanger (24) links to each other with the port of export of compressor (1) by A pipeline (23) respectively, link to each other by the port of export of F pipeline (32) with solution cooler (11), link to each other with the port of export of the cooling coil (43) of described evaporative heat exchanger (27) by C pipeline (29), B pipeline (28), link to each other with cooling coil (43) arrival end of described evaporative heat exchanger (27) by working medium pump (26); Cooling coil (43) port of export of described evaporative heat exchanger (27) links to each other with the arrival end of solution cooler (11) by B pipeline (28), D pipeline (30), links to each other with the arrival end of throttle mechanism (4) by B pipeline (28), E pipeline (31).
2, a kind of refrigerating unit of air condition by dehumidifying, evaporative cooling solution, it comprises compressor (1), evaporimeter (3), throttle mechanism (4), solution cooler (11), regenerator (13), concentrated solution pump (14), dehumidifier (17), weak solution pump (18) and heater (21), it is characterized in that: further comprising direct heat exchanger (24) and evaporative heat exchanger (27); Described evaporative heat exchanger (27) is provided with one group of cooling coil (43) and one group of condenser coil (44), described direct heat exchanger (24) links to each other with condenser coil (44) port of export of evaporative heat exchanger (27) by H pipeline (42) respectively, link to each other by the port of export of F pipeline (32) with solution cooler (11), link to each other with the port of export of the cooling coil (43) of described evaporative heat exchanger (27) by C pipeline (29), B pipeline (28), link to each other with cooling coil (43) arrival end of described evaporative heat exchanger (27) by working medium pump (26); The arrival end of the condenser coil (44) of described evaporative heat exchanger (27) links to each other with the port of export of compressor (1) by G pipeline (41), cooling coil (43) port of export of described evaporative heat exchanger (27) links to each other with the arrival end of solution cooler (11) by B pipeline (28), D pipeline (30), links to each other with the arrival end of throttle mechanism (4) by B pipeline (28), E pipeline (31).
3, a kind of refrigerating unit of air condition by dehumidifying, evaporative cooling solution, it comprises compressor (1), evaporimeter (3), throttle mechanism (4), solution cooler (11), regenerator (13), concentrated solution pump (14), dehumidifier (17), weak solution pump (18) and heater (21), it is characterized in that: further comprising direct heat exchanger (24) and evaporative heat exchanger (27); Described evaporative heat exchanger (27) is provided with one group of cooling coil (43) and one group of condenser coil (44), described direct heat exchanger (24) links to each other with the port of export of solution cooler (11) by F pipeline (32) respectively, link to each other with the port of export of the cooling coil (43) of described evaporative heat exchanger (27) by C pipeline (29), B pipeline (28), link to each other with cooling coil (43) arrival end of described evaporative heat exchanger (27) by working medium pump (26); The arrival end of the condenser coil (44) of described evaporative heat exchanger (27) links to each other with the port of export of compressor (1) by G pipeline (41), cooling coil (43) port of export of described evaporative heat exchanger (27) links to each other with the arrival end of solution cooler (11) by B pipeline (28), D pipeline (30), and the port of export of the condenser coil (44) of described evaporative heat exchanger (27) links to each other with the arrival end of throttle mechanism (4) by I pipeline (45).
4, according to the described refrigerating unit of air condition by dehumidifying, evaporative cooling solution of claim 1 to 3, it is characterized in that: control valve (25) is set on the described C pipeline (29).
CNB2007100172099A 2007-01-09 2007-01-09 Refrigerating unit of air condition by dehumidifying, evaporative cooling solution Expired - Fee Related CN100458292C (en)

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CN103743005B (en) * 2013-12-30 2016-04-27 南京航空航天大学 Vortex tube actified solution dehumidification system and regeneration of waste liquor dehumanization method thereof
CN104405432A (en) * 2014-10-22 2015-03-11 中国矿业大学 High temperature mine refrigerating and dehumidifying combined circulating system
CN104501322B (en) * 2015-01-12 2017-04-05 重庆大学 A kind of absorption internally-cooled solution dehumidifying system
CN109579199A (en) * 2019-01-22 2019-04-05 上海交通大学 A kind of heat pump driven semipermeable membrane dehumidifying ultrasonic atomizatio regeneration solution air-conditioning system
CN113899026A (en) * 2021-09-24 2022-01-07 安徽聪旗智能科技有限公司 High-cycle-energy-efficiency lithium chloride dehumidification system and lithium chloride solution circulation method

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