CN103512271B - Direct-fired three-purpose-type lithium bromide absorption-type cold and hot water unit with flue gas heat exchanger - Google Patents
Direct-fired three-purpose-type lithium bromide absorption-type cold and hot water unit with flue gas heat exchanger Download PDFInfo
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- CN103512271B CN103512271B CN201310460239.2A CN201310460239A CN103512271B CN 103512271 B CN103512271 B CN 103512271B CN 201310460239 A CN201310460239 A CN 201310460239A CN 103512271 B CN103512271 B CN 103512271B
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- hot water
- heat exchanger
- flue gas
- gas heat
- exchange unit
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- Y—GENERAL 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/27—Relating to heating, ventilation or air conditioning [HVAC] technologies
- Y02A30/274—Relating to heating, ventilation or air conditioning [HVAC] technologies using waste energy, e.g. from internal combustion engine
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- Y—GENERAL 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/62—Absorption based systems
- Y02B30/625—Absorption based systems combined with heat or power generation [CHP], e.g. trigeneration
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- Heat-Pump Type And Storage Water Heaters (AREA)
- Sorption Type Refrigeration Machines (AREA)
Abstract
The invention relates to a direct-fired three-purpose-type lithium bromide absorption-type cold and hot water unit with a flue gas heat exchanger. The direct-fired three-purpose-type lithium bromide absorption-type cold and hot water unit comprises an evaporator (1), an absorber (2), a low-temperature heat exchanger (4), a high-temperature heat exchanger (5), a direct-fired-type high-pressure generator (7), the flue gas heat exchanger (25), a hot-water heat exchanger (14), a low-pressure generator (17) and a condenser (18). The flue gas heat exchanger (25) is additionally arranged in the unit. The flue gas heat exchanger (25) is arranged in a flue exhaust tube (8) of the direct-fired-type high-pressure generator. The flue gas heat exchanger (25) and the hot-water heat exchanger (14) are of a series-connection arrangement structure. A sanitary hot-water inlet tube (11) is connected to the flue gas heat exchanger (25). A sanitary hot-water outlet tube (12) is connected out from the hot-water heat exchanger (14). A hot-water communication tube (26) is arranged between the flue gas heat exchanger (25) and the hot-water heat exchanger (14). Sanitary hot water enters from the flue gas heat exchanger (25) and flows out from the hot-water heat exchanger (14). According to the direct-fired three-purpose-type lithium bromide absorption-type cold and hot water unit, the flue exhaust temperature is lower, and when the unit conducts refrigeration and supplies the sanitary hot water at the same time, condensation water of the sanitary hot-water heat exchanger can be utilized for conducting the refrigeration.
Description
Technical field
The present invention relates to a kind of direct combustion three type cold/hot water machine of lithium bromide group.Belong to air conditioner technical field.
Background technology
A kind of direct combustion three in the past uses type cold/hot water machine of lithium bromide group as shown in Figure 1, the hot water heat exchanger 14 for producing health hot water is provided with in unit, make unit can supply health hot water while refrigeration or while heating (producing air-conditioning or Process heat water), also can supply health hot water separately, therefore be called direct combustion three type cold/hot water machine of lithium bromide group.The health hot water outlet 12 of this unit hot water heat exchanger is generally provided with hot water electrical's three-way control valve 13, and hot water bypass pipe 29 is connected with between health hot water inlet tube 11 and hot water electrical's three-way control valve 13, make unit can carry out regulable control to the load of health hot water when freezing and supply health hot water or heat and supply health hot water simultaneously simultaneously; When unit heats and supplies health hot water simultaneously, produce air-conditioning or Process heat water with evaporimeter 1.This direct combustion three is applicable to heating water's (air-conditioning or Process heat water) by type cold/hot water machine of lithium bromide group and the application places of health hot water temperature all lower (general≤70 DEG C), the fume exhausting type of unit is identical with conventional direct fired lithium bromide absorption type chiller, exhaust gas temperature higher (generally higher than 150 DEG C), the temperature difference underused between health hot water and exhaust gas temperature carries out flue gas heat recovery.In addition, no matter this unit is that the condensate water in hot water heat exchanger is all direct to be flowed back in Direct Fired High Pressure Generator 7 through condensate return pipe 9, and the refrigerating function of condensate water is utilized for health hot water under that operating condition.
Summary of the invention
The object of the invention is to overcome above-mentioned deficiency, provide the lower and unit of a kind of exhaust gas temperature in refrigeration simultaneously for the direct combustion three type cold/hot water machine of lithium bromide group that the condensate water of health hot water heat exchanger can be utilized during health hot water to freeze.
The object of the present invention is achieved like this: a kind of direct combustion three with flue gas heat-exchange unit type cold/hot water machine of lithium bromide group, comprise evaporimeter, absorber, low temperature heat exchanger, high-temperature heat exchanger, Direct Fired High Pressure Generator, flue gas heat-exchange unit, hot water heat exchanger, low pressure generator and condenser, described unit has additional flue gas heat-exchange unit, flue gas heat-exchange unit is arranged in the smoke exhaust pipe of Direct Fired High Pressure Generator, or be arranged in the external chimney of unit, flue gas heat-exchange unit and hot water heat exchanger adopt series arrangement, health hot water inlet tube access flue gas heat-exchange unit, health hot water outlet picks out from hot water heat exchanger, hot water cross over pipe is provided with between flue gas heat-exchange unit and hot water heat exchanger, health hot water enters from flue gas heat-exchange unit, go out from hot water heat exchanger.
The direct combustion three type cold/hot water machine of lithium bromide group of band flue gas heat-exchange unit of the present invention, condensate water cross over pipe is provided with between hot water heat exchanger and condenser, between hot water heat exchanger and Direct Fired High Pressure Generator, be provided with condensate return pipe, the water inlet of condensate water cross over pipe is lower than the water inlet of condensate return pipe.
The direct combustion three type cold/hot water machine of lithium bromide group of band flue gas heat-exchange unit of the present invention, the health hot water outlet of hot water heat exchanger is provided with hot water electrical's three-way control valve, and is connected with hot water bypass pipe between hot water cross over pipe and hot water electrical's three-way control valve.
The direct combustion three type cold/hot water machine of lithium bromide group of band flue gas heat-exchange unit of the present invention, described condensate water cross over pipe is provided with condensate water stop valve.
The invention has the beneficial effects as follows:
The present invention with on type cold/hot water machine of lithium bromide group basis, by setting up flue gas heat-exchange unit, reclaims low-temperature flue gas waste heat with health hot water at direct combustion three in the past, reduces exhaust gas temperature, thus reduces energy consumption, improves unit energy efficiency coefficient; By arranging the condensation water for energy conservation device of health hot water heat exchanger, making unit the condensate water of health hot water heat exchanger can be utilized to freeze when freezing and supply health hot water simultaneously, thus reducing unit energy consumption for cooling, improving unit comprehensive energy efficiency coefficient.
Accompanying drawing explanation
Fig. 1 is a kind of direct combustion three type cold/hot water machine of lithium bromide group structural representation in the past.
Fig. 2 is direct combustion three type cold/hot water machine of lithium bromide group embodiment 1 schematic diagram of band flue gas heat-exchange unit of the present invention.
Fig. 3 is direct combustion three type cold/hot water machine of lithium bromide group embodiment 2 schematic diagram of band flue gas heat-exchange unit of the present invention.
Reference numeral in figure:
Evaporimeter 1
Absorber 2
Solution transfer valve 3
Low temperature heat exchanger 4
High-temperature heat exchanger 5
Drain pipe 6 occurred frequently
Direct Fired High Pressure Generator 7
Smoke exhaust pipe 8
Condensate return pipe 9
Condensate water water outlet box 10
Health hot water inlet tube 11
Health hot water outlet 12
Hot water electrical's three-way control valve 13
Hot water heat exchanger 14
Refrigerant vapour pipe 15
Steam transfer valve 16
Low pressure generator 17
Condenser 18
Cooling water outlet pipe 19
Cold (heat) water outlet pipe 20
Cold (heat) water inlet pipe 21
Solution pump 22
Cryogenic fluid pump 23
Cooling water inlet pipe 24
Flue gas heat-exchange unit 25
Hot water cross over pipe 26
Condensate water cross over pipe 27
Condensate water stop valve 28
Hot water bypass pipe 29
Steam cross over pipe 30.
Detailed description of the invention
The present invention is unit as shown in Figure 2, and this unit is the direct combustion three type cold/hot water machine of lithium bromide group of the band flue gas heat-exchange unit be made up of the pipeline of evaporimeter 1, absorber 2, low temperature heat exchanger 4, high-temperature heat exchanger 5, Direct Fired High Pressure Generator 7, flue gas heat-exchange unit 25, hot water heat exchanger 14, low pressure generator 17, condenser 18, solution pump 22, cryogenic fluid pump 23, control system (not shown) and connecting components, valve.Wherein, flue gas heat-exchange unit 25 is arranged in the smoke exhaust pipe 8 of Direct Fired High Pressure Generator and (also can be arranged in the external chimney of unit); Flue gas heat-exchange unit 25 and hot water heat exchanger 14 adopt series arrangement, namely health hot water inlet tube 11 accesses flue gas heat-exchange unit, health hot water outlet 12 picks out from hot water heat exchanger 14, hot water cross over pipe 26 is provided with between flue gas heat-exchange unit 25 and hot water heat exchanger 14, this hot water cross over pipe 26 is the health hot water outlet of flue gas heat-exchange unit 25, is also the health hot water inlet tube of hot water heat exchanger 14; Health hot water outlet is provided with hot water electrical's three-way control valve 13, and is connected with hot water bypass pipe 29 between hot water cross over pipe 26 and hot water electrical's three-way control valve 13; The condensate water water outlet box 10 of hot water heat exchanger is provided with the condensate water cross over pipe 27 of UNICOM's condenser 18 and the condensate return pipe 9 of UNICOM's Direct Fired High Pressure Generator 7 simultaneously, and the water inlet of condensate water cross over pipe 27 is lower than the water inlet of condensate return pipe 9, condensate water cross over pipe 27 is provided with condensate water stop valve 28; Pipeline between drain pipe 6 occurred frequently and absorber 2 is equipped with solution transfer valve 3, the pipeline between refrigerant vapour pipe 15 and evaporimeter 1 is equipped with steam transfer valve 16, between refrigerant vapour pipe 15 and hot water heat exchanger 14, be connected with steam cross over pipe 30.Condensate water cross over pipe 27 and condensate water stop valve 28 form condensation water for energy conservation device.
When unit refrigeration supplies health hot water simultaneously, solution transfer valve 3 and steam transfer valve 16 are closed, and condensate water stop valve 28 is opened.The flue gas that Direct Fired High Pressure Generator 7 is discharged enters flue gas heat-exchange unit 25, with the health hot water heat exchange entering flue gas heat-exchange unit 25, temperature lower (general≤60 DEG C) through health hot water inlet tube 11, flue-gas temperature is reduced to after below 100 DEG C, enter external chimney again to enter air, thus reduction heat loss due to exhaust gas, improve the heat utilization ratio of fuel.Go out the health hot water of flue gas heat-exchange unit 25, if temperature reaches design temperature, then go out unit through hot water bypass pipe 29, hot water electrical's three-way control valve 13 and health hot water outlet 12, enter health hot water water system or the heat storage water tank (not shown) of unit outside; If go out the health hot water temperature of flue gas heat-exchange unit lower than design temperature, then partly or entirely enter hot water heat exchanger 14 through hot water cross over pipe 26, entered the further heat temperature raising of high temperature refrigerant vapour of hot water heat exchanger 14 through steam cross over pipe 30, then gone out unit through hot water electrical's three-way control valve 13 and health hot water outlet 12.The control system of unit, by the regulable control to hot water electrical's three-way control valve 13, can carry out step-less adjustment control to the health hot water flow proportional entering hot water heat exchanger 14 from 0 ~ 100%, thus health hot water outlet temperature is controlled within the required range.The condensate water water outlet box 10 that condensate water imports hot water heat exchanger 14 is condensed into after entering the high temperature refrigerant vapour heat sanitary hot water of hot water heat exchanger 14, condenser 18 is entered through condensate water communicating pipe 27, evaporimeter 1 cooling cycle system is together imported with the water as refrigerant got off from condensation in the water as refrigerant of low pressure generator 17 and condenser 18, play refrigeration effect, thus reduce the energy consumption for cooling of unit, improve the comprehensive COP of unit.
Unit heats (producing air-conditioning or Process heat water) when supplying health hot water simultaneously, and solution transfer valve 3 and steam transfer valve 16 are opened, and condensate water is ended 28 valves and closed.The flue gas of Direct Fired High Pressure Generator discharge enters flue gas heat-exchange unit 25, with the health hot water heat exchange entering flue gas heat-exchange unit 25, temperature lower (general≤60 DEG C) through health hot water inlet tube 11, flue-gas temperature is reduced to after below 100 DEG C, enter external chimney again to enter air, thus reduction heat loss due to exhaust gas, improve the heat utilization ratio of fuel.Go out the health hot water of flue gas heat-exchange unit 25, if temperature reaches design temperature, then go out unit through hot water bypass pipe 29, hot water electrical's three-way control valve 13 and health hot water outlet 12; If go out the health hot water temperature of flue gas heat-exchange unit 25 lower than design temperature, then partly or entirely enter hot water heat exchanger 14 through hot water cross over pipe 26, entered the further heat temperature raising of high temperature refrigerant vapour of hot water heat exchanger 14 through steam cross over pipe 30, then gone out unit through hot water electrical's three-way control valve 13 and health hot water outlet 12.The control system of unit, by the regulable control to hot water electrical's three-way control valve 13, can carry out step-less adjustment control to the health hot water flow proportional entering hot water heat exchanger 14 from 0 ~ 100%.Condense into the condensate water water outlet box 10 that condensate water imports hot water heat exchanger 14 after entering the high temperature refrigerant vapour heat sanitary hot water of hot water heat exchanger 14, enter Direct Fired High Pressure Generator 7 through condensate return pipe 9.
When unit supplies separately health hot water, solution transfer valve 3 and steam transfer valve 16 are opened, condensate water stop valve 28 is closed, the hot water bypass pipe 29 side complete shut-down of hot water electrical's three-way control valve 13, the health hot water entering unit first reclaims low-temperature flue gas heat through flue gas heat-exchange unit 25, then enters hot water heat exchanger 14 through hot water cross over pipe 26 and is heated to health hot water exit design temperature by high temperature refrigerant vapour.The flue-gas temperature going out flue gas heat-exchange unit 14 is reduced to after below 100 DEG C and enters air through external chimney, makes unit supply separately the thermal efficiency ratio unit in the past during health hot water high by more than 3%.The condensate water produced in hot water heat exchanger 14 enters Direct Fired High Pressure Generator 7 through condensate return pipe 9.
But the cooling water flow path parallel-connection flow (as shown in Figure 2) of unit, may also be serial flow (as shown in Figure 3).
Claims (6)
1. the type cold/hot water machine of lithium bromide group of the direct combustion three with flue gas heat-exchange unit, comprise evaporimeter (1), absorber (2), low temperature heat exchanger (4), high-temperature heat exchanger (5), Direct Fired High Pressure Generator (7), flue gas heat-exchange unit (25), hot water heat exchanger (14), low pressure generator (17) and condenser (18), it is characterized in that: described unit has additional flue gas heat-exchange unit (25), flue gas heat-exchange unit (25) is arranged in the smoke exhaust pipe (8) of Direct Fired High Pressure Generator, or be arranged in the external chimney of unit, flue gas heat-exchange unit (25) and hot water heat exchanger (14) adopt series arrangement, health hot water inlet tube (11) access flue gas heat-exchange unit (25), health hot water outlet (12) picks out from hot water heat exchanger (14), hot water cross over pipe (26) is provided with between flue gas heat-exchange unit (25) and hot water heat exchanger (14), health hot water enters from flue gas heat-exchange unit (25), go out from hot water heat exchanger (14).
2. a kind of direct combustion three with flue gas heat-exchange unit type cold/hot water machine of lithium bromide group according to claim 1, it is characterized in that: between hot water heat exchanger (14) and condenser (18), be provided with condensate water cross over pipe (27), between hot water heat exchanger (14) and Direct Fired High Pressure Generator (7), be provided with condensate return pipe (9), the water inlet of condensate water cross over pipe (27) is lower than the water inlet of condensate return pipe (9).
3. a kind of direct combustion three with flue gas heat-exchange unit type cold/hot water machine of lithium bromide group according to claim 1, it is characterized in that: on the health hot water outlet (12) of hot water heat exchanger (14), be provided with hot water electrical's three-way control valve (13), and be connected with hot water bypass pipe (29) between hot water cross over pipe (26) and hot water electrical's three-way control valve (13).
4. a kind of direct combustion three with flue gas heat-exchange unit type cold/hot water machine of lithium bromide group according to claim 2, it is characterized in that: on the health hot water outlet (12) of hot water heat exchanger (14), be provided with hot water electrical's three-way control valve (13), and be connected with hot water bypass pipe (29) between hot water cross over pipe (26) and hot water electrical's three-way control valve (13).
5. a kind of direct combustion three with flue gas heat-exchange unit type cold/hot water machine of lithium bromide group according to claim 2, is characterized in that: described condensate water cross over pipe (27) is provided with condensate water stop valve (28).
6. a kind of direct combustion three with flue gas heat-exchange unit type cold/hot water machine of lithium bromide group according to claim 4, is characterized in that: described condensate water cross over pipe (27) is provided with condensate water stop valve (28).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310460239.2A CN103512271B (en) | 2013-10-08 | 2013-10-08 | Direct-fired three-purpose-type lithium bromide absorption-type cold and hot water unit with flue gas heat exchanger |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310460239.2A CN103512271B (en) | 2013-10-08 | 2013-10-08 | Direct-fired three-purpose-type lithium bromide absorption-type cold and hot water unit with flue gas heat exchanger |
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| Publication Number | Publication Date |
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| CN103512271A CN103512271A (en) | 2014-01-15 |
| CN103512271B true CN103512271B (en) | 2015-07-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310460239.2A Active CN103512271B (en) | 2013-10-08 | 2013-10-08 | Direct-fired three-purpose-type lithium bromide absorption-type cold and hot water unit with flue gas heat exchanger |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104848581B (en) * | 2015-05-08 | 2017-05-24 | 双良节能系统股份有限公司 | Two stage evaporation and absorption double effect type lithium bromide absorption refrigeration/heating machine unit |
| CN105423592B (en) * | 2015-12-23 | 2018-02-02 | 双良节能系统股份有限公司 | Double-working-condition direct combustion dual effect type lithium bromide absorption type heat pump unit |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2839913Y (en) * | 2005-11-03 | 2006-11-22 | 江苏双良空调设备股份有限公司 | Direct fired lithum bromide absorptive machine set for providing cool, hot and sanitary hot water |
| CN201844606U (en) * | 2010-11-01 | 2011-05-25 | 双良节能系统股份有限公司 | Novel high-efficiency and direct-fired lithium bromide absorption-type water heater/chiller |
| CN102901269A (en) * | 2012-10-31 | 2013-01-30 | 张勤福 | Multipurpose direct coal-fired machine for refrigeration, heat supply and bathing |
| CN202915597U (en) * | 2012-10-27 | 2013-05-01 | 双良节能系统股份有限公司 | Two-section flue gas hot-water single-effect and double-effect composite lithium bromide absorption type refrigerating unit |
| CN203501545U (en) * | 2013-10-08 | 2014-03-26 | 双良节能系统股份有限公司 | Direct-fired triple-purpose lithium bromide absorption cold and hot water set with flue gas heat exchanger |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4293329B2 (en) * | 2000-01-26 | 2009-07-08 | 大阪瓦斯株式会社 | Heat recovery equipment |
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2013
- 2013-10-08 CN CN201310460239.2A patent/CN103512271B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2839913Y (en) * | 2005-11-03 | 2006-11-22 | 江苏双良空调设备股份有限公司 | Direct fired lithum bromide absorptive machine set for providing cool, hot and sanitary hot water |
| CN201844606U (en) * | 2010-11-01 | 2011-05-25 | 双良节能系统股份有限公司 | Novel high-efficiency and direct-fired lithium bromide absorption-type water heater/chiller |
| CN202915597U (en) * | 2012-10-27 | 2013-05-01 | 双良节能系统股份有限公司 | Two-section flue gas hot-water single-effect and double-effect composite lithium bromide absorption type refrigerating unit |
| CN102901269A (en) * | 2012-10-31 | 2013-01-30 | 张勤福 | Multipurpose direct coal-fired machine for refrigeration, heat supply and bathing |
| CN203501545U (en) * | 2013-10-08 | 2014-03-26 | 双良节能系统股份有限公司 | Direct-fired triple-purpose lithium bromide absorption cold and hot water set with flue gas heat exchanger |
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| CN103512271A (en) | 2014-01-15 |
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