CN104110913B - Low-grade exhaust heat drives efficient absorbent-thermal chemical reaction twin-stage thermode - Google Patents

Low-grade exhaust heat drives efficient absorbent-thermal chemical reaction twin-stage thermode Download PDF

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CN104110913B
CN104110913B CN201410345109.9A CN201410345109A CN104110913B CN 104110913 B CN104110913 B CN 104110913B CN 201410345109 A CN201410345109 A CN 201410345109A CN 104110913 B CN104110913 B CN 104110913B
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bed
evaporative condenser
low temp
water inlet
outlet pipe
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CN104110913A (en
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陆紫生
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Shanghai Jiaotong University
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Shanghai Jiaotong University
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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
    • 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

Abstract

The invention provides a kind of low-grade heat source and drive efficient absorbent-thermal chemical reaction twin-stage thermode, wherein, hotbed high with first, the second high hotbed, the first low temp. bed, the second low temp. bed, the first evaporative condenser, the second evaporative condenser are connected water route valve group respectively; First high hotbed is connected with the second low temp. bed, and the second high hotbed is connected with the first low temp. bed, and the first low temp. bed is connected with the second evaporative condenser, and the second low temp. bed is connected with the first evaporative condenser, and the first evaporative condenser is connected with the second evaporative condenser.Present invention comprises the absorption process of hygroscopic salt, crystallization process and thermochemical reaction process, circulatory moisture absorption amount significantly improves, thus improves energy flow.Heat source temperature is 70 DEG C, and cooling water temperature is 35 DEG C, and heat source rises to 125 DEG C from 70 DEG C, and storing up cold density can reach 0.69kWh/kg; In thermal energy storage process, working medium salt and cold-producing medium isolated, almost free of losses, realizes continuance lifting thermal source quality.

Description

Low-grade exhaust heat drives efficient absorbent-thermal chemical reaction twin-stage thermode
Technical field
The present invention relates to chlorate/expanded graphite-water twin-stage thermode technical field, specifically a kind of low-grade exhaust heat drives efficient absorbent-thermal chemical reaction twin-stage thermode.
Background technology
The growth rate of production of energy is still difficult to the requirement adapting to the national economic development, and energy prices are still in rising trend, and this smelter energy expenditure being accounted for enterprise's total production cost 20% ~ 30% will be new challenge.But the basic reason of current China Energy situation sternness is that energy consumption efficiency is low.The output efficiency of China's standard coal per ton is only equivalent to 10.3% of Japan, 28.6% of the U.S..In China's energy consumption of industry, the energy conversion of nearly 60 ~ 65% is residual heat resources.The waste heat total resources of every profession and trade account for the 17%-67% of its fuel consumption total amount, and the residual heat resources of recoverable are about 60 ~ 65% of waste heat total resources.The country that current UTILIZATION OF VESIDUAL HEAT IN is maximum is the U.S., and its utilization rate reaches 60%, and the utilization rate in Europe is 50%, and our country only has 30%.With regard to Waste Heat Reuse present situation, China also has and very large utilizes space.
Industrial waste heat discharge large industry as, cement, iron and steel, thermoelectricity, pottery, non-ferrous metal etc., these industries not still waste heat discharge rich and influential family, and be the main industries of room temperature air discharge is also the maximum industry of carbon footprint simultaneously.It is improve economy, a fuel-saving important channel that Waste Heat Recovery utilizes.But used heat is under certain manufacturing condition, the energy be not fully used, namely unnecessary, suffer the discarded energy.Comprise high-temp waste gas waste heat, cooling medium waste heat, waste vapour waste water residual heat, high-temperature product and afterheat of slags, chemical reaction waste heat, combustible exhaust gas, waste liquid, waste material and do not fire waste heat and high-pressure fluid overbottom pressure etc. to the greatest extent.It has discontinuity, has a lot of intermittent heat energy discharge comparatively cannot effectively reclaim; In addition often because of the restriction of locational space, the improvement of available heat recovery cannot be done at existing on-site; Further, the flow temperature of heat energy carrier is also quite important, and temperature is higher, more has value.So-called quantitatively system is for heat energy carrier flow, and flow is more stable, more has recovery value.
So, if the used heat of grade is promoted to the high temperature energy, real economy and environment protection significance will be had.The research of the lifting aspect of low-grade exhaust heat quality, has had a lot of scientific research personnel to be studied.Through finding the literature search of prior art:
Application for a patent for invention publication number is: CN103808060A, patent name is: band flash vessel two-stage absorbs Equations of The Second Kind lithium bromide absorption type heat pump unit, this invention relates to a kind of band flash vessel two-stage and absorbs Equations of The Second Kind lithium bromide absorption type heat pump unit, comprise generator, condenser, evaporimeter, absorber and solution heat exchanger, described unit adds a flash vessel, absorber is divided into first absorber and secondary absorber simultaneously, solution heat exchanger is divided into high-temperature solution heat exchanger and cryogenic fluid heat exchanger, secondary absorber and flash vessel are in same cavity, first absorber and evaporimeter are in same cavity, in generator and the same cavity of condenser, waste heat source enters evaporimeter and generator, solution circulation is connected, concentrated solution is introduced into secondary absorber and becomes intermediate solution, enter first absorber again and become weak solution, weak solution enters generator simmer down to concentrated solution.But this patent of invention only make use of and absorbs heat, and heat flow density is lower, meanwhile, system uses solution pump, easily Crystallization Plugging phenomenon occurs.
Application for a patent for invention publication number is: CN103808065A, patent name is: Equations of The Second Kind lithium bromide absorption type heat pump machine set system, this invention relates to a kind of Equations of The Second Kind lithium bromide absorption type heat pump machine set system, comprise two single-action Equations of The Second Kind lithium bromide absorption type heat pump units, two units are connected by pipeline, First unit and second unit include generator, condenser, evaporimeter, absorber and solution heat exchanger, waste heat source series connection is driven to enter the evaporimeter of First unit successively, the evaporimeter of second unit, the generator of second unit and the generator of First unit, cooling water parallel connection enters the condenser of First unit and the condenser of second unit respectively, the high temperature heat source parallel connection of producing enters the absorber of First unit and the absorber of second unit respectively, two unit solution circulations and water as refrigerant circulation are separately independently, respectively by Equations of The Second Kind lithium bromide absorption type heat pump unit single-action process flow operation in the past.But this patent of invention more complicated, Systematical control is more difficult, and in addition, this invention only make use of Gas-Liquid Absorption heat, and heat flow density is lower.
Application for a patent for invention publication number is: CN103808059A, patent name is: secondary generation secondary absorbs Equations of The Second Kind lithium bromide absorption type heat pump unit, this invention relates to a kind of secondary generation secondary and absorbs Equations of The Second Kind lithium bromide absorption type heat pump unit, comprise: first-stage generator, second-stage generator, condenser, evaporimeter, first absorber, secondary absorber, high-temperature solution heat exchanger and cryogenic fluid heat exchanger, secondary absorber and evaporimeter are arranged in same cavity; First absorber and first-stage generator are arranged in same cavity; Second-stage generator and condenser are arranged in same cavity, and solution circulation is two and independently circulates: first-stage generator, secondary absorber and high-temperature solution heat exchanger form a solution circulation; Second-stage generator, first absorber and cryogenic fluid heat exchanger form another solution circulation.But these invention parts are more, add manufacturing cost, reduce the reliability of system simultaneously; In addition, the efficiency of this invention is lower.
Application for a patent for invention publication number is: CN103196256A, and patent name is: Composite-generationsecond second kind absorption type heat pump, and this invention provides Composite-generationsecond second kind absorption type heat pump, belongs to technical field of heat pumps.Second absorber is communicated with generator through the second solution pump with the second solution heat exchanger, generator is communicated with the second generator through the second solution heat exchanger, second generator is communicated with a point steam chest through solution choke valve with the second absorber, steam chest is divided to be communicated with absorber through solution pump with solution heat exchanger, absorber is communicated with the second absorber through solution heat exchanger, generator has refrigerant steam channel to be communicated with the second absorber, steam chest is divided to have refrigerant steam channel to be communicated with condenser, second generator has refrigerant steam channel to be communicated with the second condenser, condenser is through cryogen liquid pump, second condenser is communicated with evaporimeter respectively through the second cryogen liquid pump, evaporimeter is communicated with absorber, generator, second generator is communicated with waste heat medium pipeline with evaporimeter, absorber is communicated with heated medium pipeline, condenser is communicated with cooling medium pipeline with the second condenser, form Composite-generationsecond second kind absorption type heat pump.But this invention employs multiple pump, this makes the more electric energy of system consumption, meanwhile, solution crystallization generation solution pump blockage problem easily occurs.
Application for a patent for invention publication number is: CN102353172A, and patent name is: backheating type double-effect and triple-effect second-kind absorption-type heat pump, and this invention provides backheating type double-effect and triple-effect second-kind absorption-type heat pump, belongs to absorption heat pump technical field.First generator, second generator, absorption-generator, absorber, divide steam chest, first condenser, second condenser, evaporimeter, first solution pump, second solution pump, solution choke valve, first solution heat exchanger, second solution heat exchanger, first cryogen liquid pump, second cryogen liquid pump and choke valve form backheating type double-effect second-kind absorption-type heat pump---and the first generator and the second generator realize double-effect process, absorption-generator realizes backheat flow process, first generator provides refrigerant vapour respectively to absorption-generator and the second generator, second generator provides refrigerant vapour to the first condenser, steam chest is divided to provide refrigerant vapour to the second condenser, evaporimeter provides refrigerant vapour to absorber, increase the parts such as the 3rd generator, form back-heating type second-kind absorption-type heat pump.But this patent of invention is too complicated, this will affect economy and the reliability of this invention, be difficult to realize efficient control automatically; Meanwhile, this invention employs multiple solution pump, easily solution pump clogging occurs.
Summary of the invention
The present invention is directed to prior art above shortcomings, a kind of low-grade exhaust heat is provided to drive efficient absorbent-thermal chemical reaction twin-stage thermode, its endless form includes the absorption process of hygroscopic salt, crystallization process and thermochemical reaction process, so, the circulatory moisture absorption amount of this endless form can significantly improve, thus can improve energy flow.When heat source temperature is 70 DEG C, cooling water temperature is 35 DEG C, and heat source can rise to 125 DEG C from 70 DEG C, and the cold density of storage of this kind of refrigeration cycle can reach 0.69kWh/kg; In thermal energy storage process, working medium salt and cold-producing medium isolated, almost free of losses.This endless form of the present embodiment, can realize continuance lifting thermal source quality.
The present invention is achieved by the following technical solutions.
A kind of low-grade exhaust heat drives efficient absorbent-thermal chemical reaction twin-stage thermode, comprise: water route valve group, the first high hotbed, the first low temp. bed, the first evaporative condenser, the second high hotbed, the second low temp. bed, the second evaporative condenser, described water route valve group respectively hotbed high with first, the second high hotbed, the first low temp. bed, the second low temp. bed, the first evaporative condenser, the second evaporative condenser is connected; Described first high hotbed is connected with the second low temp. bed, described second high hotbed is connected with the first low temp. bed, described first low temp. bed is connected with the second evaporative condenser, and described second low temp. bed is connected with the first evaporative condenser, and described first evaporative condenser is connected with the second evaporative condenser;
Wherein,
Described water route valve group and the first high hotbed are connected with the second high hotbed and realize the cyclic process of delivery of energy;
Described water route valve group and the first low temp. bed are connected with the second low temp. bed the cyclic process realizing heating or cooling;
Described water route valve group and the first evaporative condenser are connected with the second evaporative condenser and realize cooling or warming cycle.
Preferably, described water route valve group comprises the first hot water inlet pipe, the first hot water outlet pipe, the second hot water inlet pipe, the second hot water outlet pipe, the first cooling water inlet pipe, the first cooling water outlet pipe, the second cooling water inlet pipe, the second cooling water outlet pipe, the first thermal source water inlet pipe, the first thermal source outlet pipe, Secondary Heat Source water inlet pipe, Secondary Heat Source outlet pipe; Wherein, described first hot water inlet pipe and the first hot water outlet pipe respectively water inlet end of hotbed high with first and water side are connected, and form circulation; Described second hot water inlet pipe and the second hot water outlet pipe respectively water inlet end of hotbed high with second and water side are connected, and form circulation; Described first thermal source water inlet pipe and the first thermal source outlet pipe are connected with the water inlet end of the first low temp. bed and water side respectively, form circulation; Described Secondary Heat Source water inlet pipe and Secondary Heat Source outlet pipe are connected with the water inlet end of the second low temp. bed and water side respectively, form circulation; Described first cooling water inlet pipe is connected with the water inlet end of the first low temp. bed and the water inlet end of the first evaporative condenser respectively, and the water side of the first low temp. bed is all connected with the first cooling water outlet pipe with the water side of the first evaporative condenser, forms circulation; Described second cooling water inlet pipe is connected with the water inlet end of the second low temp. bed and the water inlet end of the second evaporative condenser respectively, and the water side of the second low temp. bed is all connected with the first cooling water outlet pipe with the water side of the second evaporative condenser, forms circulation.
Preferably, described first high hotbed and the second high hotbed include: high hotbed water inlet pipe and high hotbed outlet pipe, described high hotbed water inlet pipe forms the water inlet end of high hotbed, described high hotbed outlet pipe forms the water side of high hotbed, and water route valve group is connected with high hotbed water inlet pipe and high hotbed outlet pipe respectively by straight-through valve.
Preferably, described first low temp. bed and the second low temp. bed include: low temp. bed water inlet pipe and low temp. bed outlet pipe, described low temp. bed water inlet pipe forms the water inlet end of low temp. bed, described low temp. bed outlet pipe forms the water side of low temp. bed, and described water route valve group is connected with low temp. bed water inlet pipe and low temp. bed outlet pipe respectively by straight-through valve.
Preferably, described first evaporative condenser and the second evaporative condenser include: evaporative condenser water inlet pipe and evaporative condenser outlet pipe, described evaporative condenser water inlet pipe forms the water inlet end of evaporative condenser, described evaporative condenser outlet pipe forms the water side of evaporative condenser, and described water route valve group is connected with evaporative condenser water inlet pipe and evaporative condenser outlet pipe respectively by straight-through valve.
Preferably, the bottom of described first high hotbed is connected by the top of straight-through valve with the second low temp. bed; The bottom of described second high hotbed is connected by the top of straight-through valve with the first low temp. bed;
The bottom of described first low temp. bed is connected by the top of straight-through valve with the second evaporative condenser; The bottom of described second low temp. bed is connected by the top of straight-through valve with the first evaporative condenser;
The right side of described first evaporative condenser is connected with the left side central portion of the second triple valve with the first high hotbed by the first triple valve successively; The left side of described second evaporative condenser is connected with the right side central of the second triple valve with the first high hotbed by the first triple valve successively;
The right side central of described first evaporative condenser is connected by the left side central portion of straight-through valve with the second evaporative condenser.
Compared with prior art, the present invention has following beneficial effect:
(1) Driven by Solar Energy efficient absorbent provided by the invention-thermal chemical reaction single-stage air-conditioning system, its endless form includes the absorption process of hygroscopic salt, crystallization process and thermochemical reaction process, so, the circulatory moisture absorption amount of this endless form can significantly improve, thus can improve energy flow.；
(2) when heat source temperature is 70 DEG C, cooling water temperature is 35 DEG C, and heat source can rise to 125 DEG C from 70 DEG C, and the cold density of storage of this kind of refrigeration cycle can reach in 0.69kWh/kg thermal energy storage process, working medium salt and cold-producing medium isolated, almost free of losses.Endless form of the present invention, can realize continuance lifting thermal source quality.
Accompanying drawing explanation
By reading the detailed description done non-limiting example with reference to the following drawings, other features, objects and advantages of the present invention will become more obvious:
Fig. 1 is structural representation of the present invention;
Fig. 2 is working cycle diagram of the present invention.
Detailed description of the invention
Below embodiments of the invention are elaborated: the present embodiment is implemented under premised on technical solution of the present invention, give detailed embodiment and concrete operating process.It should be pointed out that to those skilled in the art, without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.
Please refer to Fig. 1 and Fig. 2.
Present embodiments provide a kind of low-grade exhaust heat and drive efficient absorbent-thermal chemical reaction twin-stage thermode, comprise: water route valve group, the first high hotbed, the first low temp. bed, the first evaporative condenser, the second high hotbed, the second low temp. bed, the second evaporative condenser, described water route valve group respectively hotbed high with first, the second high hotbed, the first low temp. bed, the second low temp. bed, the first evaporative condenser, the second evaporative condenser is connected; Described first high hotbed is connected with the second low temp. bed, described second high hotbed is connected with the first low temp. bed, described first low temp. bed is connected with the second evaporative condenser, and described second low temp. bed is connected with the first evaporative condenser, and described first evaporative condenser is connected with the second evaporative condenser;
Wherein,
Described water route valve group and the first high hotbed are connected with the second high hotbed and realize the cyclic process of delivery of energy;
Described water route valve group and the first low temp. bed are connected with the second low temp. bed the cyclic process realizing heating or cooling;
Described water route valve group and the first evaporative condenser are connected with the second evaporative condenser and realize cooling or warming cycle.
Further, described water route valve group comprises the first hot water inlet pipe, the first hot water outlet pipe, the second hot water inlet pipe, the second hot water outlet pipe, the first cooling water inlet pipe, the first cooling water outlet pipe, the second cooling water inlet pipe, the second cooling water outlet pipe, the first thermal source water inlet pipe, the first thermal source outlet pipe, Secondary Heat Source water inlet pipe, Secondary Heat Source outlet pipe; Wherein, described first hot water inlet pipe and the first hot water outlet pipe respectively water inlet end of hotbed high with first and water side are connected, and form circulation; Described second hot water inlet pipe and the second hot water outlet pipe respectively water inlet end of hotbed high with second and water side are connected, and form circulation; Described first thermal source water inlet pipe and the first thermal source outlet pipe are connected with the water inlet end of the first low temp. bed and water side respectively, form circulation; Described Secondary Heat Source water inlet pipe and Secondary Heat Source outlet pipe are connected with the water inlet end of the second low temp. bed and water side respectively, form circulation; Described first cooling water inlet pipe is connected with the water inlet end of the first low temp. bed and the water inlet end of the first evaporative condenser respectively, and the water side of the first low temp. bed is all connected with the first cooling water outlet pipe with the water side of the first evaporative condenser, forms circulation; Described second cooling water inlet pipe is connected with the water inlet end of the second low temp. bed and the water inlet end of the second evaporative condenser respectively, and the water side of the second low temp. bed is all connected with the first cooling water outlet pipe with the water side of the second evaporative condenser, forms circulation.
Further, described first high hotbed and the second high hotbed include: high hotbed water inlet pipe and high hotbed outlet pipe, described high hotbed water inlet pipe forms the water inlet end of high hotbed, described high hotbed outlet pipe forms the water side of high hotbed, and water route valve group is connected with high hotbed water inlet pipe and high hotbed outlet pipe respectively by straight-through valve.
Further, described first low temp. bed and the second low temp. bed include: low temp. bed water inlet pipe and low temp. bed outlet pipe, described low temp. bed water inlet pipe forms the water inlet end of low temp. bed, described low temp. bed outlet pipe forms the water side of low temp. bed, and described water route valve group is connected with low temp. bed water inlet pipe and low temp. bed outlet pipe respectively by straight-through valve.
Further, described first evaporative condenser and the second evaporative condenser include: evaporative condenser water inlet pipe and evaporative condenser outlet pipe, described evaporative condenser water inlet pipe forms the water inlet end of evaporative condenser, described evaporative condenser outlet pipe forms the water side of evaporative condenser, and described water route valve group is connected with evaporative condenser water inlet pipe and evaporative condenser outlet pipe respectively by straight-through valve.
Further, the bottom of described first high hotbed is connected by the top of straight-through valve with the second low temp. bed; The bottom of described second high hotbed is connected by the top of straight-through valve with the first low temp. bed;
The bottom of described first low temp. bed is connected by the top of straight-through valve with the second evaporative condenser; The bottom of described second low temp. bed is connected by the top of straight-through valve with the first evaporative condenser;
The right side of described first evaporative condenser is connected with the left side central portion of the second triple valve with the first high hotbed by the first triple valve successively; The left side of described second evaporative condenser is connected with the right side central of the second triple valve with the first high hotbed by the first triple valve successively;
The right side central of described first evaporative condenser is connected by the left side central portion of straight-through valve with the second evaporative condenser.
Below in conjunction with accompanying drawing, the present embodiment is described further.
As shown in Figure 1, the low-grade exhaust heat that the present embodiment provides drives efficient absorbent-thermal chemical reaction twin-stage thermode, comprise: high hotbed 15, second low temp. bed 23, second evaporative condenser 25 of water route valve group the 49, first high hotbed 1, first low temp. bed 9, first evaporative condenser 11, second, wherein:
Water route valve group 49 is connected with the high hotbed 15 of the first high hotbed 1, second, its pipeline connected is, first hot water inlet pipe 28 is connected with straight-through valve a29, straight-through valve a29 is connected with the water inlet pipe 2 of the first high hotbed 1, the outlet pipe 3 of the first high hotbed 1 is connected with straight-through valve b33, and straight-through valve b33 is connected with the first hot water outlet pipe 32; Second hot water inlet pipe 41 is connected with straight-through valve c40, and straight-through valve c40 is connected with the water inlet pipe 16 of the second high hotbed 15, and the outlet pipe 17 of the second high hotbed 15 is connected with straight-through valve d43, and straight-through valve d43 is connected with the second hot water outlet pipe 44;
Water route valve group 49 is connected with the first low temp. bed 9, second low temp. bed 23, its pipeline connected is, first thermal source water inlet pipe 27 is connected with straight-through valve e31, straight-through valve e31 is connected with the water inlet pipe 4 of the first low temp. bed 9, the outlet pipe 5 of the first low temp. bed 9 is connected with straight-through valve f30, and straight-through valve f30 is connected with the first thermal source outlet pipe 26; Secondary Heat Source water inlet pipe 38 is connected with straight-through valve g14, and straight-through valve g14 is connected with the water inlet pipe 18 of the second low temp. bed 23, and the outlet pipe 19 of the second low temp. bed 23 is connected with straight-through valve h42, and straight-through valve h42 is connected with Secondary Heat Source outlet pipe 39;
Water route valve group 49 is connected with the first evaporative condenser 11, second evaporative condenser 25, its pipeline connected is, first cooling water inlet pipe 34 is connected with straight-through valve i35, straight-through valve i35 is connected with the water inlet pipe 4 of the first low temp. bed 9, straight-through valve i35 is connected with the water inlet pipe 6 of the first evaporative condenser 11 simultaneously, the outlet pipe 5 of the first low temp. bed 9 is connected with straight-through valve j37, and the outlet pipe 7 of the first evaporative condenser 11 is connected with straight-through valve j37 simultaneously, and straight-through valve j37 is connected with the first cooling water outlet pipe 36; Second cooling water inlet pipe 46 is connected with straight-through valve k45, straight-through valve k45 is connected with the water inlet pipe 18 of the second low temp. bed 23, straight-through valve k45 is connected with the water inlet pipe 20 of the second evaporative condenser 25 simultaneously, the outlet pipe 19 of the second low temp. bed 23 is connected with straight-through valve 147, the outlet pipe of the second evaporative condenser 25 is connected with straight-through valve 147 simultaneously, and straight-through valve 147 is connected with the second cooling water outlet pipe 48;
First high hotbed 1 is connected with the second low temp. bed 23, and its pipeline connected is, the bottom of the first high hotbed 1 connects and is connected with straight-through valve m8, and straight-through valve m8 is connected with the top of the second low temp. bed 23; Second high hotbed 15 is connected with the first low temp. bed 9, and its pipeline connected is that the bottom of the second high hotbed 15 is connected with straight-through valve n22, and straight-through valve n22 is connected with the top of the first low temp. bed 9;
First low temp. bed 9 is connected with the second evaporative condenser 25, and its pipeline connected is that the bottom of the first low temp. bed 9 is connected with straight-through valve o10, and straight-through valve o10 is connected with the top of the second evaporative condenser 25; Second low temp. bed 23 is connected with the first evaporative condenser 11, and its pipeline connected is that the bottom of the second low temp. bed 23 is connected with straight-through valve p24, and straight-through valve p24 is connected with the top of the first evaporative condenser 11;
First evaporative condenser 11 is connected with the second high hotbed 15, its pipeline connected is, the right part of the first evaporative condenser 11 is connected with the first triple valve 13, and the first triple valve 13 is connected with the second triple valve 14, and the second triple valve is connected with the left portion of the first high hotbed 15; Second evaporative condenser 25 is connected with the first high hotbed 1, its pipeline connected is, the left part of the second evaporative condenser 25 is connected with the first triple valve 13, and the first triple valve 13 is connected with the second triple valve 14, and the second triple valve 14 is connected with the right middle of the first high hotbed 1;
First evaporative condenser 11 is connected with the second evaporative condenser 25, and its pipeline connected is that the right middle of the first evaporative condenser 11 is connected with straight-through valve q12, and straight-through valve q12 is connected with the left portion of the second evaporative condenser 25;
Described first high hotbed 1 comprises: high hotbed water inlet pipe I2, high hotbed outlet pipe I3 and straight-through valve m8, wherein: high hotbed water inlet pipe I2 is connected with the upper left quarter of the first high hotbed 1, high hotbed outlet pipe I3 is connected with the lower left quarter of the first high hotbed, and straight-through valve m8 is connected with the bottom of the first high hotbed 1; Described second high hotbed comprises: high hotbed water inlet pipe II16, high hotbed outlet pipe II17 and straight-through valve n22, wherein: high hotbed water inlet pipe II16 is connected with the upper right quarter of the second high hotbed 15, high hotbed outlet pipe II17 is connected with the right lower quadrant of the second high hotbed 15, and straight-through valve n22 is connected with the bottom of the second high hotbed 15.
The first described low temp. bed comprises: low temp. bed water inlet pipe I4, low temp. bed outlet pipe I5 and straight-through valve o10, wherein: low temp. bed water inlet pipe I4 is connected with the upper left quarter of the first low temp. bed 9, low temp. bed outlet pipe I5 is connected with the lower left quarter of the first low temp. bed, and straight-through valve o10 is connected with the bottom of the first low temp. bed 9; The second described low temp. bed 23 comprises: low temp. bed water inlet pipe II18, low temp. bed outlet pipe II19 and straight-through valve p24, wherein: low temp. bed water inlet pipe II18 is connected with the upper right quarter of the second low temp. bed 23, low temp. bed outlet pipe II19 is connected with the right lower quadrant of the second low temp. bed 23, and straight-through valve p24 is connected with bottom the second low temp. bed 23;
The first described evaporative condenser 11 comprises: evaporative condenser water inlet pipe I6, evaporative condenser outlet pipe I7, the first triple valve 13 and straight-through valve q12, wherein: evaporative condenser water inlet pipe I6 is connected with the upper left quarter of the first evaporative condenser 11, evaporative condenser outlet pipe I7 is connected with the lower left quarter of the first evaporative condenser 11, first triple valve 13 is connected with the upper right quarter of the first evaporative condenser 11, and straight-through valve q12 is connected with the right lower quadrant of the first evaporative condenser 11; The second described evaporative condenser 25 comprises: evaporative condenser water inlet pipe II20, evaporative condenser outlet pipe II21, the first triple valve 13, wherein: evaporative condenser water inlet pipe II20 is connected with the upper right quarter of the second evaporative condenser 25, evaporative condenser outlet pipe II21 is connected with the right lower quadrant of the second evaporative condenser 25, first triple valve 13 is connected with the upper left quarter of the second evaporative condenser 25, and straight-through valve q12 is connected with the lower left quarter of the second evaporative condenser 25.
As shown in Figure 2, the low-grade exhaust heat that the present embodiment provides drives efficient absorbent-thermal chemical reaction twin-stage thermode, and its specific works mode comprises the following steps:
1) high hotbed desorb-cooling low temp. bed moisture absorption process is heated: low-grade exhaust heat heats the first high hotbed and the second high hotbed by water route valve group, being heated of weak solution in first high hotbed and the second high hotbed, weak solution temperature rises to F point from G point, now constantly separates out LiCl.H in solution 2o, continues heating moisture absorption working medium, constantly will have LiCl.H in solution 2o separates out, and final working medium is all converted into LiCl.H 2o solid, equation is continue heating LiCl.H 2o solid, the temperature of working medium rises to E point from F point, LiCl.H 2o starts to lose the crystallization water, and final working medium is all converted into LiCl solid, and its reactional equation is L i C 1. H 2 O ( c r ) + ΔH a d ⇔ L i C l ( c r ) + H 2 O ( g ) . Continue heating moisture absorption working medium, the temperature of working medium rises to D point from E point.Meanwhile, cooling water enters the first low temp. bed and the second low temp. bed through water route valve group, and the first low temp. bed and the second low temp. bed are cooled, and low temp. bed temperature drops to K point from J point, and the steam desorbed by high hotbed is by low temp. bed moisture absorption.The mode formula of moisture absorption reaction is as follows:
2) heating evaporation condenser (evaporation), the desorb of heating low temp. bed, cooling evaporative condenser (condensation) and high hotbed moisture absorption process: low-grade exhaust heat enters evaporative condenser (evaporation) through water route valve group, and the cold-producing medium in evaporative condenser is by heating evaporation.Meanwhile, low-grade exhaust heat enters low temp. bed through water route valve group, and low temp. bed is heated, and its temperature rises to H point from K point, and now steam is desorbed out.Cooling water enters evaporative condenser (condensation) through water route valve group, and evaporative condenser is cooled, and the water vapour desorbed from low temp. bed is condensed into liquid state by evaporative condenser.Hot water enters high hotbed through water route valve group, and the temperature of high hotbed rises to C point from D point, and now pressure is evaporating pressure, and high hotbed starts moisture absorption, and the temperature of high hotbed drops to B point from C point, the moisture absorption of LiCl crystal, thus will be converted into LiCl.H 2o crystal, its reactive mode is L i C l . H 2 O ( c r ) + ΔH a d ⇔ L i C l ( c r ) + H 2 O ( g ) , The Direction of Reaction and 1) contrary.Continue cooling LiCl.H2O, cooling LiCl.H2O by continuations generation moisture sorption effect, working medium forms the saturated solution of LiCl the most at last, and in high hotbed, the temperature of moisture absorption working medium will drop to A point from B point, working medium moisture absorption, and its reaction equation is its Direction of Reaction and 1).Hygroscopic salt moisture absorption in high hotbed, thus generation absorbs heat in a large number, absorbs heat and can be supplied to user's use.
In Fig. 2: Qe is evaporation heat, Qcon is condenser heat, and Qcool1 is cooling heat, Qch1 is high hotbed heating amount, Qch2 is that low temp. bed adds heat, and Qdis is moisture absorption heat, and Te is evaporating temperature, Tc is condensation temperature, Tch is energy storage temperature, and Tdis is delivery of energy temperature, and Pm is intermediate pressure, Pc is condensing pressure, and Pe is evaporating pressure.
The low-grade lung heat that the present embodiment provides drives efficient absorbent-thermal chemical reaction twin-stage thermode, its endless form includes the absorption process of hygroscopic salt, crystallization process and thermochemical reaction process, so the circulatory moisture absorption amount of this endless form can significantly improve, thus can improve energy flow.When heat source temperature is 70 DEG C, cooling water temperature is 35 DEG C, and heat source can rise to 125 DEG C from 70 DEG C, and the cold density of storage of this kind of refrigeration cycle can reach 0.69kWh/kg; In thermal energy storage process, working medium salt and cold-producing medium isolated, almost free of losses.This endless form of the present embodiment, can realize continuance lifting thermal source quality.
Above specific embodiments of the invention are described.It is to be appreciated that the present invention is not limited to above-mentioned particular implementation, those skilled in the art can make various distortion or amendment within the scope of the claims, and this does not affect flesh and blood of the present invention.

Claims (6)

1. a low-grade exhaust heat drives efficient absorbent-thermal chemical reaction twin-stage thermode, it is characterized in that, comprise: water route valve group, the first high hotbed, the first low temp. bed, the first evaporative condenser, the second high hotbed, the second low temp. bed, the second evaporative condenser, described water route valve group respectively hotbed high with first, the second high hotbed, the first low temp. bed, the second low temp. bed, the first evaporative condenser, the second evaporative condenser is connected; Described first high hotbed is connected with the second low temp. bed, described second high hotbed is connected with the first low temp. bed, described first low temp. bed is connected with the second evaporative condenser, and described second low temp. bed is connected with the first evaporative condenser, and described first evaporative condenser is connected with the second evaporative condenser;
Wherein,
Described water route valve group and the first high hotbed are connected with the second high hotbed and realize the cyclic process of delivery of energy;
Described water route valve group and the first low temp. bed are connected with the second low temp. bed the cyclic process realizing heating or cooling;
Described water route valve group and the first evaporative condenser are connected with the second evaporative condenser and realize cooling or warming cycle.
2. low-grade exhaust heat according to claim 1 drives efficient absorbent-thermal chemical reaction twin-stage thermode, it is characterized in that, described water route valve group comprises the first hot water inlet pipe, the first hot water outlet pipe, the second hot water inlet pipe, the second hot water outlet pipe, the first cooling water inlet pipe, the first cooling water outlet pipe, the second cooling water inlet pipe, the second cooling water outlet pipe, the first thermal source water inlet pipe, the first thermal source outlet pipe, Secondary Heat Source water inlet pipe, Secondary Heat Source outlet pipe; Wherein, described first hot water inlet pipe and the first hot water outlet pipe respectively water inlet end of hotbed high with first and water side are connected, and form circulation; Described second hot water inlet pipe and the second hot water outlet pipe respectively water inlet end of hotbed high with second and water side are connected, and form circulation; Described first thermal source water inlet pipe and the first thermal source outlet pipe are connected with the water inlet end of the first low temp. bed and water side respectively, form circulation; Described Secondary Heat Source water inlet pipe and Secondary Heat Source outlet pipe are connected with the water inlet end of the second low temp. bed and water side respectively, form circulation; Described first cooling water inlet pipe is connected with the water inlet end of the first low temp. bed and the water inlet end of the first evaporative condenser respectively, and the water side of the first low temp. bed is all connected with the first cooling water outlet pipe with the water side of the first evaporative condenser, forms circulation; Described second cooling water inlet pipe is connected with the water inlet end of the second low temp. bed and the water inlet end of the second evaporative condenser respectively, and the water side of the second low temp. bed is all connected with the first cooling water outlet pipe with the water side of the second evaporative condenser, forms circulation.
3. low-grade exhaust heat according to claim 1 and 2 drives efficient absorbent-thermal chemical reaction twin-stage thermode, it is characterized in that, described first high hotbed and the second high hotbed include: high hotbed water inlet pipe and high hotbed outlet pipe, described high hotbed water inlet pipe forms the water inlet end of high hotbed, described high hotbed outlet pipe forms the water side of high hotbed, and water route valve group is connected with high hotbed water inlet pipe and high hotbed outlet pipe respectively by straight-through valve.
4. low-grade exhaust heat according to claim 1 and 2 drives efficient absorbent-thermal chemical reaction twin-stage thermode, it is characterized in that, described first low temp. bed and the second low temp. bed include: low temp. bed water inlet pipe and low temp. bed outlet pipe, described low temp. bed water inlet pipe forms the water inlet end of low temp. bed, described low temp. bed outlet pipe forms the water side of low temp. bed, and described water route valve group is connected with low temp. bed water inlet pipe and low temp. bed outlet pipe respectively by straight-through valve.
5. low-grade exhaust heat according to claim 1 and 2 drives efficient absorbent-thermal chemical reaction twin-stage thermode, it is characterized in that, described first evaporative condenser and the second evaporative condenser include: evaporative condenser water inlet pipe and evaporative condenser outlet pipe, described evaporative condenser water inlet pipe forms the water inlet end of evaporative condenser, described evaporative condenser outlet pipe forms the water side of evaporative condenser, and described water route valve group is connected with evaporative condenser water inlet pipe and evaporative condenser outlet pipe respectively by straight-through valve.
6. low-grade exhaust heat according to claim 1 drives efficient absorbent-thermal chemical reaction twin-stage thermode, and it is characterized in that, the bottom of described first high hotbed is connected by the top of straight-through valve with the second low temp. bed; The bottom of described second high hotbed is connected by the top of straight-through valve with the first low temp. bed;
The bottom of described first low temp. bed is connected by the top of straight-through valve with the second evaporative condenser; The bottom of described second low temp. bed is connected by the top of straight-through valve with the first evaporative condenser;
The right side of described first evaporative condenser is connected with the left side central portion of the second triple valve with the first high hotbed by the first triple valve successively; The left side of described second evaporative condenser is connected with the right side central of the second triple valve with the first high hotbed by the first triple valve successively;
The right side central of described first evaporative condenser is connected by the left side central portion of straight-through valve with the second evaporative condenser.
CN201410345109.9A 2014-07-18 2014-07-18 Low-grade exhaust heat drives efficient absorbent-thermal chemical reaction twin-stage thermode Expired - Fee Related CN104110913B (en)

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