CN1995869A - Solar injection and speed-variable compression integrated refrigeration device - Google Patents

Solar injection and speed-variable compression integrated refrigeration device Download PDF

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Publication number
CN1995869A
CN1995869A CN 200710056427 CN200710056427A CN1995869A CN 1995869 A CN1995869 A CN 1995869A CN 200710056427 CN200710056427 CN 200710056427 CN 200710056427 A CN200710056427 A CN 200710056427A CN 1995869 A CN1995869 A CN 1995869A
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solar energy
refrigeration
speed
injector
input
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CN 200710056427
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CN100480599C (en
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张于峰
田琦
赵薇
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Tianjin University
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Tianjin University
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Abstract

The invention relates to an integrated refrigeration device with solar injection and variable-speed compression, comprising evaporator, regenerator, variable-speed compressor, injector, preheater, condensator, expansion valve, working medium pump, liquid and liquid injector, vapour and liquid separator and solar heat-collection generator. In the invention the solar energy is used as the main energy source and the electricity energy is assisted. When the solar energy is enough to drive injecting refrigeration system, solar heat-collection generator and variable-speed compressor are combined as turbochanger so as to improve the performance coefficient of solar injecting refrigeration system. When the solar energy is not enough, variable-speed compression refrigeration method with high efficiency is operated to solve the low efficiency of refrigeration system. The invention can make compressor cooperate with injector according to solar radiation change and realize the stable transition from strengthened injecting refrigeration to compression refrigeration so that a device can realize high-efficiency cool supply in all day and the working stability is strong.

Description

Solar energy jetting and speed-variable compression integrated refrigeration device
Technical field
The invention belongs to refrigeration technology field, being specifically related to a kind of is main energy sources with solar energy, is aided with round-the-clock injection and speed-variable compression integrated refrigeration device that electric energy drives.
Background technology
Solar energy is a kind of cleaning, reproducible natural resources.For a long time, how a large amount of technical staff utilizes solar energy to solve existing Refrigeration Technique effectively in research to have problems such as energy consumption is big, contaminated environment fully.
Solar energy still is a kind of intermittent energy source of continuous variation, satisfy the requirement of cooling load at any time, mainly contains three kinds of modes with solar refrigeration in the prior art: the one, solar energy and conventional refrigeration two covering devices are set simultaneously; The 2nd, enough big solar thermal collector and regenerative apparatus are set and without supplementary energy; The 3rd, solar energy and auxiliary thermal source two cover thermals source and a shared cover refrigeration plant are set.Adopt aforesaid way to have different shortcomings: mode one investment is too big; Mode two is not only invested too big, and limited by installing space, usually is difficult to realize; Mode three need be utilized supplementary energy to drive inefficient injection or absorbent refrigeration system institute's chilling requirement is provided when solar energy is not enough, makes the energy that utilizes solar refrigeration to save, and is offset by the auxiliary cooling system of poor efficiency again.Therefore, developing the solar energy of the less all weather operations of investment and the integration system cool equipment of supplementary energy driving is very important.
In addition, spray type refrigerating is more simple in structure, easily manufactured than absorption refrigeration at present commonly used, cost is low, stable and reliable operation, maintenance are lacked, but existing solar injection cooling device efficient is lower, and can not utilize a covering device to realize the conversion of solar refrigeration and supplementary energy refrigeration, thereby be difficult to realize round-the-clock refrigeration.So, develop efficiently, can realize that ejector refrigeration and the steady transformed technology of compression refrigeration and equipment are significant applying of Refrigeration ﹠ Air-Conditioning field for the development and the solar energy of solar energy jetting Refrigeration Technique.
Summary of the invention
Purpose of the present invention solves the deficiencies in the prior art exactly, proposing a kind of is main energy sources with solar energy, be aided with round-the-clock enhancing injection and speed-variable compression integrated refrigeration device that electric energy drives, so that solar energy and conventional energy resource can be utilized effectively, promote the development and solar energy the applying of solar energy jetting Refrigeration Technique in the Refrigeration ﹠ Air-Conditioning field.
Solar energy jetting of the present invention and speed-variable compression integrated refrigeration device, comprise by evaporimeter 1, regenerator 2, injector 4, preheater 5, condenser 6, the refrigeration system that expansion valve 7 and working medium pump 8 constitute, its difference with the prior art, be to be provided with on the basis of the above by variable speed compressor 3, liquid-fluid injector 9 and solar energy heating generator 10, and the solar energy speed change that vapour liquid separator 11 is formed strengthens injection refrigerating system, when the present invention was used for the situation of solar radiation deficiency, described solar energy speed change strengthens spraying system can be by described evaporimeter 1, described regenerator 2, described variable speed compressor 3, described condenser 6, the speed change compression refrigerating system that described expansion valve 7 constitutes replaces.
The connected mode that described solar energy speed change strengthens injection refrigerating system is: the input of described variable speed compressor 3 is connected with described injector 4 with described regenerator 2 respectively with output, the input of described injector 4 is connected with an end of described vapour liquid separator 11, the other end of described vapour liquid separator 11 is divided into two, one connects described solar energy heating generator 10, and connect the output of described liquid-fluid injector 9 by described solar energy heating generator 10, its another connect the input of described liquid-fluid injector 9, the input of described liquid-fluid injector 9 also connects described preheater 5.
The connected mode of described speed change compression refrigerating system is: described regenerator 2 first branch road 2a inputs are connected with described condenser 6, the output of described regenerator 2 is divided into two, one is connected with evaporimeter 1 input by expansion valve 7, and another passes through valve f1 and is connected with the input of working medium pump 8; The output of described evaporimeter 1 is connected with the input of described variable speed compressor 3 by the second branch road 2b of described regenerator 2, and the output of described evaporimeter 1 is connected with the input of described injector 4 by valve f4; The output of described injector 4 is connected with described condenser 6 inputs with valve f5 by the first branch road 5a of preheater 5 successively; Be connected valve f3 between the input of described condenser 6 and variable speed compressor 3 outputs; The output of described working medium pump 8 is connected the input of described liquid-fluid injector 9 successively by the second branch road 5b of valve f2 and preheater 5, the output of described liquid-fluid injector 9 connects an end of solar energy heating generator 10; Described solar energy heating generator 10 other ends connect described vapour liquid separator 11, and this end of described vapour liquid separator 11 also is connected with described liquid-fluid injector 9; The other end of described vapour liquid separator 11 is connected with injector 4 inputs by valve f6.
Described speed change strengthens injection refrigerating system and the shared described evaporimeter 1 of described speed change compression refrigerating system, variable speed compressor 3 and adjustable condenser 6, and described adjustable condenser 6 is designed to unit-combination type.
Described solar energy heating generator 10 is united two into one by the generator of solar thermal collector and injection refrigerating system and constitutes.
The present invention compared with prior art, its beneficial effect is:
(1) adopted the solar energy heating generator and, when with the Driven by Solar Energy injection refrigerating system, can improve the operating efficiency of solar energy jetting refrigeration system owing to this device with the set-up mode of variable speed compressor as booster;
(2), when solar energy is not enough or cloudy, can solve the inefficiencies problem of refrigeration system operation in the prior art because this device has adopted efficiently speed change compression-type refrigeration mode to move;
(3) because the compressor in this device can carry out speed change according to solar radiation variations, guaranteed the co-ordination of compressor and injector, can satisfy the demand of user, and can realize strengthening the smooth transition of ejector refrigeration and compression refrigeration refrigeration;
(4) because the use of vapour liquid separator, variable speed compressor is improved the operation stability of refrigeration system
(5) because the use of liquid-fluid injector is fully used the high temperature separating liquid.
Description of drawings
Fig. 1 is operation principle of the present invention and component system figure.
1-evaporimeter 2-regenerator 3-variable speed compressor 4-injector 5-preheater 6-condenser 7-expansion valve 8-working medium pump 9-liquid-fluid injector 10-solar energy heating generator 11-vapour liquid separator (f1, f2, f3, f4, f5, f6)-valve
The specific embodiment
Provide specific embodiment below in conjunction with accompanying drawing, further specify solar energy jetting of the present invention and speed-variable compression integrated refrigeration device.
As shown in Figure 1, solar energy jetting of the present invention and speed-variable compression integrated refrigeration device comprise the refrigeration system that is made of evaporimeter 1, regenerator 2, injector 4, preheater 5, condenser 6, expansion valve 7, working medium pump 8.Innovation of the present invention is, has disposed the solar energy speed change of being made up of variable speed compressor 3, liquid-fluid injector 9 and solar energy heating generator 10 and vapour liquid separator 11 and strengthen injection refrigerating system on the basis of said system.Described solar energy speed change strengthens injection refrigerating system and the shared described evaporimeter 1 of described speed change compression refrigerating system, variable speed compressor 3 and adjustable condenser 6.
Solar energy heating generator 10 among the present invention is integrated the generator in ordinary solar heat collector and the spray type refrigerating system, has saved solar thermal collection system water pump and heat exchange link, and has reduced heat waste, energy consumption.
Variable speed compressor 3 among the present invention can change the adjusting rotating speed according to solar radiation and customer charge, and can realize the co-ordination of compressor and injector and the steady transformation that the solar energy speed change strengthens injection refrigerating system and speed change compression refrigerating system.
Adjustable condenser 6 among the present invention is made of some groups of unit heat exchanger, can carry out Load Regulation by the different units combination, adapts to the needs of ejector refrigeration and compression refrigeration.
Strengthen in the injection refrigerating system in the solar energy speed change, the input of described variable speed compressor 3 is connected with described injector 4 with described regenerator 2 respectively with output, the input of described injector 4 is connected with an end of described vapour liquid separator 11, the other end of described vapour liquid separator 11 is divided into two, one connects described solar energy heating generator 10, and connect the output of described liquid-fluid injector 9 by described solar energy heating generator 10, its another connect the input of described liquid-fluid injector 9, the input of described liquid-fluid injector 9 also connects described preheater 5.
In the speed change compression refrigerating system, its regenerator 2 is provided with the first branch road 2a and the second branch road 2b.The input of the described first branch road 2a is connected with condenser 6, and its output is divided into two, and one is connected with evaporimeter 1 input by expansion valve 7, and another passes through valve f1 and is connected with the input of working medium pump 8; The output of described evaporimeter 1 is connected with variable speed compressor 3 inputs by the second branch road 2b, and its output is connected with the input of injector 4 by valve f4; Injector 4 outputs are connected with described condenser 6 inputs with valve f5 by the first branch road 5a of preheater 5 successively; Be connected with valve f3 between the input of described condenser 6 and variable speed compressor 3 outputs; The output of described working medium pump 8 is connected the input of described liquid-fluid injector 9 successively by the second branch road 5b of valve f2 and preheater 5, the output of described liquid-fluid injector 9 connects an end of solar energy heating generator 10; Described solar energy heating generator 10 other ends connect described vapour liquid separator 11, and this end of described vapour liquid separator 11 also is connected with described liquid-fluid injector 9; The other end of described vapour liquid separator 11 is connected with injector 4 inputs by valve f6.
Solar energy speed change among the present invention strengthens injection refrigerating system and the shared cover evaporimeter 1 of speed change compression refrigerating system, variable speed compressor 3 and adjustable condenser 6, and described adjustable condenser 6 is designed to unit-combination type.
Operation principle of the present invention is as follows:
When solar radiation made the temperature of solar energy heating generator surpass 80 ℃, described solar energy speed change strengthened injection refrigerating system and starts evaporimeter 1, regenerator 2, variable speed compressor 3, injector 4, preheater 5, condenser 6, expansion valve 7, working medium pump 8, liquid-fluid injector 9, solar energy heating generator 10, vapour liquid separator 11 respectively.At first, solar energy heating generator 10 is converted into the solar radiant energy that obtains heat energy and passes to refrigeration working medium, makes its heat absorption back vaporization, generates high temperature and high pressure steam; Described high steam carries out vapor-liquid separation in described vapour liquid separator 11, its liquid is by 9 reuses of liquid-fluid injector, store in the separator 11 a part of steam with steady pressure, reduce pressure oscillation, guarantee spraying system stable operation, and the high steam of output enters injector 4 from described vapour liquid separator 11, simultaneously, and the low-pressure steam that injector 4 suction variable speed compressors 3 tentatively boost, and it is further boosted, meet the requirements of condensing pressure.At this moment, the working substance steam of coming out from injector 4 enters condenser 6 through first branch road of preheater 5 and is condensed into saturated liquid.When ejector refrigeration, condenser 6 each component units are all enabled, to satisfy the needs of big condensation number.Subsequently, refrigerant liquid with come the low-temperature refrigerant steam of flash-pot 1 to carry out exchange heat by regenerator 2, thereby make the refrigerant liquid refrigerant vapour cold excessively, that enter variable speed compressor 3 before the throttling overheated, both improve specific refrigerating effect, guaranteed that the dry-pressing of variable speed compressor contracted, prevented the vaporization phenomenon in the working medium pump 8 again; Be divided into two branch roads from the worker quality liquid of regenerator 2 outputs, first branch road enters evaporimeter 1 low-temperature vaporized refrigeration after expansion valve 7 expands, then enter variable speed compressor 3 through regenerator 2 again.The refrigerant vapour of low temperature, low pressure is appropriate supercharging in variable speed compressor 3, to improve citation jet body pressure, improves the spraying system performance.After supercharging, system has bigger compression ratio, and it is about 40% that compression ratio increases, and the spraying system thermal property coefficient improves about 150%.Second branch road is through the second branch road input liquid-fluid injector 9 of working medium pump 8 with preheater 5, and behind the liquid that mixed steam liquid/gas separator 11 separates, input solar energy heating generator 10 produces high steam.
When the solar radiation deficiency, the solar energy heating generator temperature is higher than under 80 ℃ the situation, the solar energy speed change in this device strengthens injection refrigerating system and disconnects injector 4, preheater 5, working medium pump 8, liquid-fluid injector 9, solar energy heating generator 10 and vapour liquid separator 11 by valve f4, valve f5, valve f1, valve f2 and valve f6 successively.Meanwhile, the speed change compression refrigerating system starts evaporimeter 1, regenerator 2, variable speed compressor 3, condenser 6, expansion valve 7.In the speed change compression refrigerating system, refrigerant liquid is low-temperature vaporized refrigeration in evaporimeter 1; Then, low-temperature refrigerant steam with carry out exchange heat from the refrigerant liquid of condenser 6 by regenerator 2, thereby make the refrigerant liquid before the throttling cold excessively, the refrigerant vapour that comes out from regenerator 2 enters variable speed compressor 3 and compresses, can regulate rotating speed according to customer charge fully, thus energy savings.And it is overheated that regenerator 2 can carry out refrigerant vapour, not only improved specific refrigerating effect but also guaranteed that the dry-pressing of variable speed compressor contracts.After refrigerant vapour is compressed and reaches the condensing pressure requirement, enter condenser 6 condensations.Because speed change compression refrigerating system condensation number is less, only needs the part unit of condenser 6 to carry out work, to guarantee that each equipment mates mutually in this system, the performance optimum Working.After liquid mistake regenerator 2 of condenser output is cold, after expansion valve 7 throttling step-downs, enter evaporimeter 1 evaporation again, finish kind of refrigeration cycle.
For example in most cities of North China, design 10Kw solar energy jetting and speed-variable compression integrated refrigeration device and gas fired-boiler are that the solar energy jetting system of auxiliary thermal source compares the solar thermal collector area that needs and reduced about 36%; Can save energy more than 63% summer.And the good operation stability of this system can better satisfy the customer charge demand.

Claims (7)

1. solar energy jetting and speed-variable compression integrated refrigeration device, comprise the refrigeration system that constitutes by evaporimeter (1), regenerator (2), injector (4), preheater (5), condenser (6), expansion valve (7) and working medium pump (8), it is characterized in that, in described refrigeration system, also be provided with the solar energy speed change enhancing injection refrigerating system that variable speed compressor (3), liquid-fluid injector (9) and solar energy heating generator (10) and vapour liquid separator (11) are formed.
2. solar energy jetting according to claim 1 and speed-variable compression integrated refrigeration device, it is characterized in that described solar energy speed change strengthens injection refrigerating system and replaced by the speed change compression refrigerating system of described evaporimeter (1), regenerator (2), variable speed compressor (3), condenser (6) and expansion valve (7) formation when solar radiation is not enough.
3. solar energy jetting according to claim 1 and 2 and speed-variable compression integrated refrigeration device, it is characterized in that, the connected mode that described solar energy speed change strengthens injection refrigerating system is: the input of described variable speed compressor (3) connects described regenerator (2), the output of described variable speed compressor (3) connects described injector (4), the input of described injector (4) is connected with an end of described vapour liquid separator (11), the other end of described vapour liquid separator (11) is divided into two, one connects described solar energy heating generator (10), and connect the output of described liquid-fluid injector (9) by described solar energy heating generator (10), its another connect the input of described liquid-fluid injector (9), the input of described liquid-fluid injector (9) connects described preheater (5).
4. solar energy jetting according to claim 2 and speed-variable compression integrated refrigeration device, it is characterized in that, the connected mode of described speed change compression refrigerating system is: the input of described regenerator (2) first branch roads (2a) is connected with described condenser (6), the output of described regenerator (2) first branch roads (2a) is divided into two, one is passed through expansion valve (7) and is connected with the input of described evaporimeter (1), another is connected with the input of described working medium pump (8) by valve (f1), the output of described evaporimeter (1) is connected with the input of described variable speed compressor (3) by second branch road (2b) of described regenerator (2), the output of described variable speed compressor (3) is connected with the input of described injector (4) by valve (f4), the output of described injector (4) is connected with the input of valve (f5) with described condenser (6) by first branch road (5a) of described preheater (5) successively, be connected with valve (f3) between the output of the input of described condenser (6) and described variable speed compressor (3), the output of described working medium pump (8) is connected the input of described liquid-fluid injector (9) successively with second branch road (5b) of preheater (5) by valve (f2), the output of described liquid-fluid injector (9) connects an end of solar energy heating generator (10); Described solar energy heating generator (10) other end connects described vapour liquid separator (11), this end of described vapour liquid separator (11) also is connected with described liquid-fluid injector (9), and the other end of described vapour liquid separator (11) is connected with the input of described injector (4) by valve (f6).
5. solar energy jetting according to claim 1 and 2 and speed-variable compression integrated refrigeration device, it is characterized in that described speed change strengthens injection refrigerating system and the shared described evaporimeter of speed change compression refrigerating system (1), variable speed compressor (3) and adjustable condenser (6).
6. solar energy jetting according to claim 1 and speed-variable compression integrated refrigeration device is characterized in that, described adjustable condenser (6) is set to unit-combination type.
7. solar energy jetting according to claim 1 and speed-variable compression integrated refrigeration device is characterized in that, described solar energy heating generator (10) is united two into one by the generator of solar thermal collector and injection refrigerating system and constitutes.
CNB2007100564273A 2007-01-09 2007-01-09 Solar injection and speed-variable compression integrated refrigeration device Expired - Fee Related CN100480599C (en)

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102706030A (en) * 2012-06-07 2012-10-03 镇江新梦溪能源科技有限公司 Cross pipe plate type solar steam jet refrigerating system
CN102706029A (en) * 2012-06-07 2012-10-03 镇江新梦溪能源科技有限公司 Snake plate type solar steam jet refrigerating system
CN103629853A (en) * 2012-11-05 2014-03-12 摩尔动力(北京)技术股份有限公司 Solar cooling system
CN104033967A (en) * 2013-03-08 2014-09-10 中原工学院 Underground water cooling type pre-heating type solar ejection air conditioning equipment
CN104315746A (en) * 2014-11-05 2015-01-28 河北省科学院能源研究所 Directly-evaporated type solar jetting refrigerating system
CN104807244A (en) * 2015-04-08 2015-07-29 华南理工大学 Solar energy absorption type super-cooling compression compound-refrigerating system and refrigerating method thereof

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102706030A (en) * 2012-06-07 2012-10-03 镇江新梦溪能源科技有限公司 Cross pipe plate type solar steam jet refrigerating system
CN102706029A (en) * 2012-06-07 2012-10-03 镇江新梦溪能源科技有限公司 Snake plate type solar steam jet refrigerating system
CN103629853A (en) * 2012-11-05 2014-03-12 摩尔动力(北京)技术股份有限公司 Solar cooling system
CN104033967A (en) * 2013-03-08 2014-09-10 中原工学院 Underground water cooling type pre-heating type solar ejection air conditioning equipment
CN104033967B (en) * 2013-03-08 2017-02-08 中原工学院 Underground water cooling type pre-heating type solar ejection air conditioning equipment
CN104315746A (en) * 2014-11-05 2015-01-28 河北省科学院能源研究所 Directly-evaporated type solar jetting refrigerating system
CN104807244A (en) * 2015-04-08 2015-07-29 华南理工大学 Solar energy absorption type super-cooling compression compound-refrigerating system and refrigerating method thereof

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