CN103398504A - Refrigerating device capable of utilizing low-temperature waste heat - Google Patents
Refrigerating device capable of utilizing low-temperature waste heat Download PDFInfo
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- CN103398504A CN103398504A CN2013103048436A CN201310304843A CN103398504A CN 103398504 A CN103398504 A CN 103398504A CN 2013103048436 A CN2013103048436 A CN 2013103048436A CN 201310304843 A CN201310304843 A CN 201310304843A CN 103398504 A CN103398504 A CN 103398504A
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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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Abstract
A refrigerating device capable of utilizing low-temperature waste heat comprises a first absorber, a generator, a first condenser, a first evaporator, a first solution pump, a first solution heat exchanger, a refrigerant liquid pump, a second absorber, a vapor-liquid separator, a second condenser, a second evaporator, a second solution pump, a second solution heat exchanger and a throttling valve. A heat supply end of a classic single-stage second absorption-type heat pump formed by the first absorber, the generator, the first condenser, the first evaporator, the first solution pump, the first solution heat exchanger and the refrigerant liquid pump is used for heating and partially vaporizing solution at an outlet of the second absorber, and the solution is then separated in the vapor-liquid separator. Two absorption-type circulations are organically combined, different working medium pairs and the low-temperature waste heat at lower temperature can be utilized to realize refrigeration by heat, and an application range of an absorption-type refrigerator is broadened.
Description
Technical field
The invention belongs to low temperature heat and field of energy-saving technology.
Background technology
Absorption circulation is take heat energy as power, adopt contrary Carnot cycle realize heat by low temperature to the high temperature transmission, be particularly suitable for the occasion of a large amount of used heat.Common absorption circulation at present is divided into the absorption circulation of the first kind and the absorption circulation of Equations of The Second Kind, wherein the former can be used to refrigeration, become Absorption Refrigerator, realization, with refrigeration heat,, than the electricity refrigeration, has huge energy-saving benefit, but it requires to drive the temperature of heat more than 75 ℃ usually, the latter claims again thermal converter, it can realize heat from low temperature to the energy saver that high temperature transmits, be particularly suitable for the occasion of a large amount of low temperature exhaust heats.
In reality, often exist a large amount of grades higher but be not enough to drive the absorption circulation of the first kind and realize the low-temperature waste heat of refrigeration, according to traditional technique, this part heat energy just can't be created cold benefit, namely can't replace electricity with heat realize energy-conservationly, can only waste or do other limited effects.The new technology that invention combines two kinds of absorption circulations, can address the above problem, and widen the absorption range of application that circulates in industrial practice.
Summary of the invention
a kind of refrigerating plant that utilizes low-temperature waste heat, by the first absorber, generator, the first condenser, the first evaporimeter, the first solution pump, the first solution heat exchanger, the cryogen liquid pump, the second absorber, vapour liquid separator, the second condenser, the second evaporimeter, the second solution pump, the second solution heat exchanger and choke valve form, the first absorber has the weak solution pipeline to be communicated with generator after the first solution heat exchanger, generator has the concentrated solution pipeline to be communicated with the first absorber after the first solution pump and the first solution heat exchanger, after generator also has the refrigerant vapour passage to be communicated with the first condenser, the first condenser also has the cryogen liquid pipeline to be communicated with the first evaporimeter through the cryogen liquid pump, the first evaporimeter has the refrigerant vapour passage to be communicated with the first absorber, the second absorber also have the weak solution pipeline through the second solution pump and the second solution heat exchanger with after the first absorber is communicated with, the first absorber has the solution pipeline to be communicated with vapour liquid separator again, vapour liquid separator also has the concentrated solution pipeline to be communicated with the second absorber after the second solution heat exchanger, vapour liquid separator also has the refrigerant vapour passage to be communicated with the second condenser, the second condenser also has the cryogen liquid pipeline to be communicated with the second evaporimeter through choke valve, the second evaporimeter also has the refrigerant vapour passage to be communicated with the second absorber, the first evaporimeter and the generator medium pipeline that also has surplus heat respectively is communicated with outside, the second absorber, the second condenser, the first condenser also has respectively the cooling medium pipeline to be communicated with outside, the second evaporimeter also has cooled medium pipeline to be communicated with outside, form a kind of refrigerating plant that utilizes low-temperature waste heat.
Description of drawings
Accompanying drawing is depicted as a kind of refrigerating plant that utilizes low-temperature waste heat provided by the invention.
In figure, the 1-the first absorber, 2-generator, the 3-the first condenser, the 4-the first evaporimeter, the 5-the first solution pump, the 6-the first solution heat exchanger, 7-cryogen liquid pump, the 8-the second absorber, 9-gas-liquid separator, the 10-the second condenser, the 11-the second evaporimeter, the 12-the second solution pump, the 13-the second solution heat exchanger, the 14-the second choke valve.
The specific embodiment
A kind of refrigerating plant of low-temperature waste heat that utilizes is achieved in that
on structure, by the first absorber 1, generator 2, the first condenser 3, the first evaporimeter 4, the first solution pump 5, the first solution heat exchanger 6, cryogen liquid pump 7, the second absorber 8, vapour liquid separator 9, the second condenser 10, the second evaporimeter 11, the second solution pump 12, the second solution heat exchanger 13 and choke valve 14 form, the first absorber 1 has the weak solution pipeline to be communicated with generator 2 after the first solution heat exchanger 6, generator 2 has the concentrated solution pipeline to be communicated with the first absorber 1 after the first solution pump 5 and the first solution heat exchanger 6, after generator 2 also has the refrigerant vapour passage to be communicated with the first condenser 3, the first condenser 3 also has the cryogen liquid pipeline to be communicated with the first evaporimeter 4 through cryogen liquid pump 7, the first evaporimeter 4 has the refrigerant vapour passage to be communicated with the first absorber 1, the second absorber 8 also have the weak solution pipeline through the second solution pump 12 and the second solution heat exchanger 13 with after the first absorber 1 is communicated with, the first absorber 1 has the solution pipeline to be communicated with vapour liquid separator 9 again, vapour liquid separator 9 also has the concentrated solution pipeline to be communicated with the second absorber 8 after the second solution heat exchanger 13, vapour liquid separator 9 also has the refrigerant vapour passage to be communicated with the second condenser 10, the second condenser 10 also has the cryogen liquid pipeline to be communicated with the second evaporimeter 11 through choke valve 14, the second evaporimeter 11 also has the refrigerant vapour passage to be communicated with the second absorber 8, the first evaporimeter 4 and generator 2 medium pipeline that also has surplus heat respectively is communicated with outside, the second absorber 8, the second condenser 10 and the first condenser 3 also have respectively the cooling medium pipeline to be communicated with outside, the second evaporimeter 11 also has cooled medium pipeline to be communicated with outside, form a kind of refrigerating plant that utilizes low-temperature waste heat.
on technique, the first absorber 1, generator 2, the first condenser 3, the first evaporimeter 4, the first solution pump 5, the first solution heat exchanger 6, cryogen liquid pump 7 forms the classical absorption circulation of single-stage Equations of The Second Kind, the first absorber is as heat supply end, with the high temperature exothermic heat that obtains in from the second absorber outlet, enter the solution in it after the second solution pump and the second solution heat exchanger, this part solution absorbs the vaporization of heat rear section in pipe, and separate after entering gas-liquid separator, isolated concentrated solution enters the second absorber after the second solution heat exchanger, absorb refrigerant vapour and heat release in cooling medium, isolated refrigerant vapour enters condenser, heat release obtains after cooling medium cryogen liquid, enter the second evaporimeter after the choke valve throttling, cooled MEDIA FLOW is through the second evaporimeter, the cryogen liquid that heating enters in it becomes refrigerant vapour to provide to the second absorber, form a kind of refrigerating plant that utilizes low-temperature waste heat.
The selected working medium of solution that it is pointed out that in the drawings circulation between left side the second absorber 8 and gas-liquid separator 9 to and in the drawings between right side generator 2 and the first absorber 1 the selected working medium of solution of circulation to can be the same or different.
The effect that the technology of the present invention can realize---A kind of refrigerating plant of low-temperature waste heat that utilizes proposed by the invention has following effect and advantage:
Illustrate with data: for simplifying, calculate, if driving heat source is steam, solution is lithium-bromide solution,, if cooling water temperature rises to 30 ℃ from 20 ℃, produces the chilled water of 7 ℃, picking and placeing the gas scope is 3%, as calculated, while adopting first kind Absorption Refrigerator, generator taphole temperature is 65 ℃, considering the heat transfer temperature difference of 10 ℃, is that steam more than 75 ℃ just can meet the demands therefore need saturation temperature; And if adopt scheme provided by the invention, under the same terms, as calculated, the saturation temperature of steam be as long as 60 ℃ can meet the demands, as seen, when the present invention greatly reduces refrigeration heat to the requirement of driving heat source.
By above-mentioned case as seen, the present invention combines the absorption circulation of the first kind and the absorption circulation of Equations of The Second Kind in the simplest mode, can utilize different working medium pair, can be with a large amount of grades that exist higher but be not enough to drive the absorption circulation of the first kind and realize the cryogenic heat wasting utilization of refrigeration, realization is with refrigeration heat, avoid this part heat by in vain waste, widened the range of application of Absorption Refrigerator.
Claims (2)
1. refrigerating plant that can utilize low-temperature waste heat, by the first absorber, generator, the first condenser, the first evaporimeter, the first solution pump, the first solution heat exchanger, the cryogen liquid pump, the second absorber, vapour liquid separator, the second condenser, the second evaporimeter, the second solution pump, the second solution heat exchanger and choke valve form, the first absorber has the weak solution pipeline to be communicated with generator after the first solution heat exchanger, generator has the concentrated solution pipeline to be communicated with the first absorber after the first solution pump and the first solution heat exchanger, after generator also has the refrigerant vapour passage to be communicated with the first condenser, the first condenser also has the cryogen liquid pipeline to be communicated with the first evaporimeter through the cryogen liquid pump, the first evaporimeter has the refrigerant vapour passage to be communicated with the first absorber, the second absorber also have the weak solution pipeline through the second solution pump and the second solution heat exchanger with after the first absorber is communicated with, the first absorber has the solution pipeline to be communicated with vapour liquid separator again, vapour liquid separator also has the concentrated solution pipeline to be communicated with the second absorber after the second solution heat exchanger, vapour liquid separator also has the refrigerant vapour passage to be communicated with the second condenser, the second condenser also has the cryogen liquid pipeline to be communicated with the second evaporimeter through choke valve, the second evaporimeter also has the refrigerant vapour passage to be communicated with the second absorber, the first evaporimeter and the generator medium pipeline that also has surplus heat respectively is communicated with outside, the second absorber, the second condenser, the first condenser also has respectively the cooling medium pipeline to be communicated with outside, the second evaporimeter also has cooled medium pipeline to be communicated with outside, form a kind of refrigerating plant that utilizes low-temperature waste heat.
2. a kind of refrigerating plant that utilizes low-temperature waste heat provided by the present invention, it is characterized in that the selected working medium of the solution that circulates between the second absorber and gas-liquid separator to and the selected working medium of solution that circulates between generator and the first absorber to can be the same or different.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013103048436A CN103398504A (en) | 2013-07-19 | 2013-07-19 | Refrigerating device capable of utilizing low-temperature waste heat |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013103048436A CN103398504A (en) | 2013-07-19 | 2013-07-19 | Refrigerating device capable of utilizing low-temperature waste heat |
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| Publication Number | Publication Date |
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| CN103398504A true CN103398504A (en) | 2013-11-20 |
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| CN2013103048436A Pending CN103398504A (en) | 2013-07-19 | 2013-07-19 | Refrigerating device capable of utilizing low-temperature waste heat |
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| CN (1) | CN103398504A (en) |
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- 2013-07-19 CN CN2013103048436A patent/CN103398504A/en active Pending
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Application publication date: 20131120 |