CN101231046A - Subsection heat-taking type overlapping heat pump - Google Patents
Subsection heat-taking type overlapping heat pump Download PDFInfo
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- CN101231046A CN101231046A CNA2008100141625A CN200810014162A CN101231046A CN 101231046 A CN101231046 A CN 101231046A CN A2008100141625 A CNA2008100141625 A CN A2008100141625A CN 200810014162 A CN200810014162 A CN 200810014162A CN 101231046 A CN101231046 A CN 101231046A
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Abstract
The invention provides an overlapping-typed heat pump for extracting heat sectionally, which belongs to the technical field of surplus heat utilization and heat pump/ refrigeration. According to the disadvantages that an overlapping-typed unit for extracting heat in a single segment way has low performance index under the circumstances that the temperature range needed by a heat consumer is wide, the final temperature is high, etc., the invention provides an overlapping-typed unit for extracting heat sectionally. Either the invention comprises an evaporator, a compressor, a compound condenser-evaporator and a throttling valve, and adopts the low-temperature stage heat pump flow of a first working substance to satisfy the high-temperature stage heating need and the low-temperature section heating for the heat consumer at the same time, and then comprises the compressor, a condenser, the compound condenser-evaporator and the throttling valve, and adopts the high-temperature stage heat pump flow of a second working substance to satisfy the high-temperature section heating for the heat consumer, or the convention forms a new heat pump flow by the condenser as well as the throttling valve which are added, and the relative components of the overlapping-typed unit; a surplus heat medium flows through the evaporator to release heat, and heating mediums extract heat from different temperature stages. The invention decreases heat transfer temperature difference, increases the performance index; the invention is more particularly suitable for the occasions of high heat supply temperature and wide range; and the invention can decrease the power consumption when being used in refrigeration.
Description
Technical field
Belong to UTILIZATION OF VESIDUAL HEAT IN and absorption type heat pump.
Background technology
Cascade type heat pump is to be formed by two or more independent heat pump overlappings, and its each independent heat pump constitutes different temperature levels and adopts different working medium respectively.Traditional superposition type unit, its low temperature level are responsible for obtaining waste heat and to the heat supply of high temperature level, and are responsible for providing heat to heated medium by the high temperature level, are single hop heat-obtaining type unit.
When heated medium need be heated to higher temperature by lower temperature, single hop heat-obtaining type superposition type unit is certainly existing such defective: the heating of all temperature sections of heated medium is all satisfied by cooling, the condensation heat release of highest temperature level working medium, the low-temperature zone heat-obtaining that is heated medium also will be finished by the highest heat supply of unit, this must make that the unit heat transfer temperature difference is big, has caused the reduction of unit performance index.Along with the raising of heat supply temperature, the performance index of unit will further reduce.
Concerning the unit that is used to freeze, its heat release to environment is taken away by cooling medium (heated medium), if the heat of refrigeration machine wasted work and cooling load formation is all risen on the maximum temperature of cooling medium and then be delivered to cooling medium, this is irrational equally.Owing to be subjected to the restriction of environment temperature, cooling medium enter unit the time initial temperature can not arbitrarily reduce, for the performance index that makes unit can not be low excessively, the measure of existing this defective of solution is to reduce the variations in temperature of cooling medium into and out of unit, but this measure has brought the problem that cooling medium consumption is big, the accessory system power consumption is high.
Summary of the invention
Technical problem to be solved by this invention is that a kind of heat transfer temperature difference that reduces unit cooling, condensation process will be provided, have that heating range is wide, heat supply temperature is high and the segmentation heat-obtaining type superposition type unit of superior performance index, being divided into turns cold coagulates-and evaporimeter is composite condensation-evaporimeter and increases condenser, choke valve and the new two kinds of fundamental types of heat supply heat pump flowsheet of superposition type unit associated components formation; Turning cold with fixed attention-evaporimeter is in the scheme of composite condensation-evaporimeter, component property index height such as the compressor of low temperature level, composite condensation-evaporimeter, evaporimeter, choke valve, first heat-obtaining section heat pump flowsheet and the structure that heat supply temperature is low, second heat-obtaining section heat pump flowsheet and the structures that parts component property index is low, heat supply temperature is high such as the compressor of high temperature level, condenser, choke valve and composite condensation-evaporimeter obtain the 3rd and the heat pump flowsheet and the structure of above heat-obtaining section by that analogy; In the scheme that increases the new heat supply heat pump flowsheet of condenser, choke valve and superposition type unit associated components formation, the compressor of low temperature level, newly-increased condenser and component property index height such as choke valve, evaporimeter, first heat-obtaining section heat pump flowsheet and the structure that heat supply temperature is low, the heat pump flowsheet and the structure of the second heat-obtaining sections that parts component property index is low, heat supply temperature is high such as the compressor of high temperature level, condenser, choke valve and condensation-evaporimeter obtain the 3rd and the heat pump flowsheet and the structure of above heat-obtaining section by that analogy; The low-temperature zone that the heat pump flowsheet of low temperature level is used to satisfy the user provides heat demand with heat demand with to the heat pump flowsheet of high temperature level, and the heat pump flowsheet of high temperature level is finished user's high temperature section heat demand; Circumferential work is imported unit by compressor, and the waste heat MEDIA FLOW is through the evaporimeter heat release, and heated medium gets hot respectively or successively in low temperature level and high temperature level.
Relatively more conventional single hop heat-obtaining type cascade type heat pump/refrigeration machine, subsection heat-taking type overlapping heat pump/refrigeration machine of the present invention is under the prerequisite that has kept superposition type unit advantage, can reduce the temperature difference in the refrigerant heat transfer process largely, thereby improve the performance index of unit; Simultaneously, compare with the single hop heat-obtaining type cascade type heat pump/refrigeration machine of routine, the present invention mainly is that the condensation-evaporimeter that becomes single type is compound condensation-evaporimeter, or has increased corresponding condenser, thus unit structurally with cost on change and little.
With two sections heat-obtaining type cascade type heat pump units adopting two temperature grade flow processs is example, as shown in Figure 1, turn cold coagulate-evaporimeter is the present invention of composite condensation-evaporimeter scheme, its objective is such realization:
1. structurally, the basic elements of character such as the compressor of low temperature level, composite condensation-evaporimeter, evaporimeter and choke valve are formed low temperature level heat pump flowsheet and structure---link to each other by the first working medium working steam passage between compressor and the composite condensation-evaporimeter, composite condensation-evaporimeter is communicated with evaporimeter through choke valve again, evaporimeter also has the first working medium working steam channel connection compressor, evaporimeter also has pipeline to be communicated with the waste heat medium, and composite condensation-evaporimeter also has pipeline to be communicated with heated medium; The basic elements of character such as the compressor of high temperature level, condenser, choke valve and composite condensation-evaporimeter constitute the heat pump flowsheet and structure of high temperature level---link to each other by the second working medium working steam passage between the compressor of high temperature level and the condenser, condenser also after choke valve is communicated with composite condensation-evaporimeter again through the second working medium working steam channel connection compressor, condenser also has pipeline to be communicated with heated medium; Also have the heated medium passage to link to each other between condenser and the composite condensation-evaporimeter, thereby low temperature level heat pump flowsheet and high temperature level heat pump flowsheet are finished the low-temperature zone of heated medium and high temperature section heated and are realized two sections heat-obtainings successively or respectively.
2. on flow process, adopt the low temperature level heat pump flowsheet of first working medium to be performed such: through entering evaporimeter after choke valve throttling step-down, the cooling, obtaining thermal evaporation that the waste heat medium passes to and become refrigerant vapour to enter the compressor of low temperature level, externally enter composite condensation-evaporimeter after boosting, heat up under the compression of input work, to become liquid again after the overheated working steam heat release that enters composite condensation-evaporimeter cooling after flow through the heated medium in it and second working medium, the condensation from the first working medium condensate liquid of composite condensation-evaporimeter; Adopt the high temperature level heat pump flowsheet of second working medium to be performed such: the compressor that after entering composite condensation-evaporimeter to absorb heat into steam after choke valve throttling step-down, the cooling, enters the high temperature level from the second working medium condensate liquid of condenser again, enter condenser after externally boosting, heat up under the compression of input work, the overheated working steam heat release that enters condenser cooling behind the heated medium of flowing through in it, condensation become liquid again; Circumferential work is imported heat pump by compressor, and the waste heat MEDIA FLOW is through the evaporimeter heat release, and heated medium gets hot respectively or successively in composite condensation-evaporimeter and condensation.
The invention is characterized in: low temperature level heat pump flowsheet is finished the heat demand of using of heated medium low-temperature zone when satisfying high temperature level heat pump flowsheet heat demand, and high temperature level heat pump flowsheet provides high temperature section with hot to heated medium.
To adopt two sections heat-obtaining types of two temperature grade flow processs cascade type heat pump unit is example, as shown in Figure 2, adopting increases by two sections heat-obtaining type cascade type heat pumps that condenser, choke valve and superposition type unit associated components constitute new heat supply heat pump flowsheet scheme, and it is that realization is of the present invention like this:
1. structurally, the basic elements of character such as the compressor of low temperature level, newly-increased condenser and choke valve, evaporimeter are formed low temperature level heat pump flowsheet and structure---and compressor is by the newly-increased condenser of the first working medium working steam channel connection, newly-increased condenser is communicated with evaporimeter through newly-increased choke valve again, evaporimeter also has the first working medium working steam channel connection compressor, evaporimeter also has pipeline to be communicated with the waste heat medium, and newly-increased condenser also has pipeline to be communicated with heated medium; The basic elements of character such as the compressor of high temperature level, condenser, choke valve and condensation-evaporimeter constitute high temperature level heat pump flowsheet and structure---link to each other by the second working medium working steam passage between compressor and the condenser, condenser is communicated with condensation-evaporimeter through choke valve again, condensation-evaporimeter also has the second working medium working steam channel connection compressor, and condenser also has pipeline to be communicated with heated medium; The basic elements of character such as compressor, condensation-evaporimeter, choke valve and evaporimeter are formed the low temperature level part of overlapping flow process; Condensation-evaporimeter also has pipeline and is communicated with the evaporimeter and the compressor that the first working substance steam channel connection low temperature level is arranged of low temperature level through choke valve, to realize the overlapping between low temperature level and high temperature level flow process.
2. on flow process, the newly-increased choke valve throttling step-down of first working medium condensate liquid warp from newly-increased condenser, enter evaporimeter after the cooling, obtaining the thermal evaporation that the waste heat medium passes to becomes refrigerant vapour to enter the compressor of low temperature level, externally boost under the compression of input work, enter newly-increased condenser and condensation-evaporimeter after the intensification respectively, the overheated working steam heat release that enters newly-increased condenser is cooled off behind the heated medium of flowing through in it, condensation becomes liquid again, and the first working medium working steam heat release that enters condensation-evaporimeter is cooled off after second working medium of flowing through in it, be condensed into liquid and then get back to evaporimeter through choke valve; Enter second working medium in condensation-evaporimeter and absorb heat into and enter the compressor of high temperature level behind the steam, externally enter condenser after boosting, heat up under the compression of input work, the working steam heat release that enters condenser becomes liquid, gets back to condensation-evaporimeter again after choke valve throttling step-down, cooling behind the heated medium of flowing through in it; The waste heat MEDIA FLOW is through the evaporimeter heat release, and circumferential work is by the compressor of low temperature level and the compressor input heat pump of high temperature level, and heated medium is successively at newly-increased condenser and condenser Nei Dere.
The invention is characterized in: the compressor of newly-increased condenser and choke valve and low temperature level, evaporimeter are formed new low temperature level heat pump flowsheet and are finished the heat demand of using that heated medium provides low-temperature zone, and the overlapping heat pump flowsheet of being made up of low temperature level and high temperature level provides the high temperature section heat supply to heated medium.
Description of drawings
Fig. 1 is according to provided by the present invention, and adopting turns cold coagulates-and evaporimeter is the structure and the schematic flow sheet of two sections heat-obtaining type cascade type heat pumps of composite condensation-evaporimeter scheme.
Fig. 2 is according to provided by the present invention, and adopting increases structure and the schematic flow sheet that condenser, choke valve and superposition type unit associated components constitute two sections heat-obtaining type cascade type heat pumps of new heat supply heat pump flowsheet scheme; Fig. 2 is with different place shown in Figure 1, there is not composite condensation-evaporimeter on the structure among Fig. 2, but a newly-increased condenser and a choke valve, finish the low-temperature zone heat supply to heated medium with compressor, new heat pump flowsheet of evaporimeter composition of low temperature level, the superheated steam that the low temperature stage compressor produces provides to condenser and condensation-evaporimeter respectively.
Fig. 3 is according to provided by the present invention, and adopting turns cold coagulates-and evaporimeter is the structure and the schematic flow sheet of three sections heat-obtaining type cascade type heat pumps of composite condensation-evaporimeter scheme; It is the representative of multistage overlapping and multistage heat-obtaining.
Fig. 4 is according to provided by the present invention, and adopting turns cold coagulates-and evaporimeter is the structure and the schematic flow sheet of two sections heat-obtaining type cascade type heat pumps of composite condensation-evaporimeter scheme; Be that with different place shown in Figure 1 it adopts the single compressed machine, the compression to first working medium is finished in the low pressure compression section of compressor, and the high pressure compressed section of compressor is finished the compression to second working medium.
Among the figure, 1,2, the 8-compressor, 1A-compressor low pressure compression section, 2A-compressor high pressure compressed section, 3,4B, 9-condenser, 4,11-composite condensation-evaporimeter, 4A-condensation-evaporimeter, 5-evaporimeter, 6,7,7A, 10-choke valve, I-compressor.Wherein, composite condensation-evaporimeter is meant that the heating that working medium should be finished another working medium makes its evaporation, finishes the heating to another medium again, is condensed into liquid after this working medium heat release.
The specific embodiment
Describe the present invention in detail below in conjunction with accompanying drawing and example.
Fig. 1 is according to provided by the present invention, turn cold to coagulate-evaporimeter is two sections heat-obtaining type cascade type heat pumps of composite condensation-evaporimeter scheme, it is that realization is of the present invention like this:
Compressor (1), composite condensation-evaporimeter (4), evaporimeter (5) and the choke valve basic elements of character such as (7) are formed low temperature level heat pump flowsheet and structure---and compressor (1) is by first working medium working steam channel connection composite condensation-evaporimeter (4), composite condensation-evaporimeter (4), composite condensation-evaporimeter (4) is communicated with evaporimeter (5) through choke valve (7) again, evaporimeter (5) also has the first working medium working steam channel connection compressor (1), evaporimeter (5) also has pipeline to be communicated with the waste heat medium, and composite condensation-evaporimeter (4) also has pipeline to be communicated with heated medium; Compressor (2), condenser (3), choke valve (6) and composite condensation-evaporimeter basic elements of character such as (4) constitute high temperature level heat pump flowsheet and structure---link to each other by the second working medium working steam passage between compressor (2) and the condenser (3), condenser (3) is communicated with composite condensation-evaporimeter (4) through choke valve (6) again, composite condensation-evaporimeter (4) also has the second working medium working steam channel connection compressor (2), and condenser (3) also has pipeline to be communicated with heated medium; Also have the heated medium passage to link to each other between composite condensation-evaporimeter (4) and the condenser (3); From the first working medium condensate liquid of composite condensation-evaporimeter (4) through choke valve (7) throttling step-down, enter evaporimeter (5) after the cooling, obtaining the thermal evaporation that the waste heat medium passes to becomes refrigerant vapour to enter compressor (1), externally boost under the compression of input work, enter composite condensation-evaporimeter (4) after the intensification, the overheated working steam that enters composite condensation-evaporimeter (4) heat release respectively cools off after flow through the heated medium in it and second working medium, condensation becomes liquid again, self cooling condenser (3) enters second working medium that enters composite condensation-evaporimeter (4) after choke valve (6) throttling and absorbs heat into and enter compressor (2) behind the steam and externally boost under the effect of input work, enter condenser (3) after the intensification, the working steam heat release that enters condenser (3) becomes liquid again behind the heated medium of flowing through in it; The waste heat MEDIA FLOW is through evaporimeter (5) heat release, and circumferential work is by compressor (1) and compressor (2) input heat pump, and heated medium is successively at composite condensation-evaporimeter (4) and condenser (3) Nei Dere.
Fig. 2 is that foundation is provided by the present invention, and adopting increases by two sections heat-obtaining type cascade type heat pumps that condenser, choke valve and superposition type unit associated components constitute new heat supply heat pump flowsheet scheme, and it is that realization is of the present invention like this:
Compressor (1), condenser (4B), choke valve (7A) and the evaporimeter basic elements of character such as (5) are formed low temperature level heat pump flowsheet and structure---and compressor (1) is by the first working medium working steam channel connection condenser (4B), condenser (4B) is communicated with evaporimeter (5) through choke valve (7A) again, evaporimeter (5) also has the-working medium working steam channel connection compressor (1), evaporimeter (5) also has pipeline to be communicated with the waste heat medium, and condenser (4) also has pipeline to be communicated with heated medium; Compressor (2), condenser (3), choke valve (6) and condensation-evaporimeter basic elements of character such as (4A) constitute high temperature level heat pump flowsheet and structure---link to each other by the second working medium working steam passage between compressor (2) and the condenser (3), condenser (3) passes through working steam channel connection compressor (2) more again after choke valve (6) is communicated with condensation-evaporimeter (4A), condenser (3) also has pipeline to be communicated with heated medium; Compressor (1), condensation-evaporimeter (4A), choke valve (7) and the evaporimeter basic elements of character such as (5) are formed the low temperature level part of overlapping flow process---and condensation-evaporimeter (4A) also has pipeline and is communicated with evaporimeter (5) and the first working substance steam channel connection compressor (1) is arranged through choke valve (7), with the low temperature level of formation overlapping unit and the overlapping between high temperature level flow process; Newly-increased choke valve (7A) the throttling step-down of first working medium condensate liquid warp from newly-increased condenser (4B) and condensation-evaporimeter (4A), enter evaporimeter (5) after the cooling, obtaining the thermal evaporation that the waste heat medium passes to becomes refrigerant vapour to enter compressor (1), externally boost under the compression of input work, enter condensation-evaporimeter (4A) and condenser (4B) after the intensification respectively, the overheated working steam heat release that enters condenser (4B) is cooled off behind the heated medium of flowing through in it, condensation becomes liquid again, and the working steam heat release that enters condensation-evaporimeter (4A) is cooled off after second working medium of flowing through in it, condensation becomes liquid again; Second working medium of absorbing heat into steam in condensation-evaporimeter (4A) enters compressor (2), externally enters condenser (3) after boosting, heat up under the compression of input work, and the working steam heat release that enters condenser (3) becomes liquid, reenters condensation-evaporimeter (4A) again after choke valve (6) throttling step-down, cooling behind the heated medium of flowing through in it; The waste heat MEDIA FLOW is through evaporimeter (5) heat release, and circumferential work is by compressor (1) and compressor (2) input heat pump, and heated medium is successively at condenser (4B) and condenser (3) Nei Dere.
Fig. 3 is according to provided by the present invention, turn cold coagulate-evaporimeter is the multiple foldable and contractile type heat pump of three sections heat-obtaining types of composite condensation-evaporimeter scheme, it can be regarded as the result who has increased the third level heat pump flowsheet of higher temperature on the basis of two sections heat-obtaining type superposition type units shown in Figure 1, its third level heat pump structure is by compressor (8), condenser (9), choke valve (10) and composite condensation-evaporimeter basic elements of character such as (11) are formed, the waste heat MEDIA FLOW is through evaporimeter (5) heat release, circumferential work is by three compressor input systems, and heated medium is respectively or successively in condensation-evaporimeter (4), obtain heat in condensation-evaporimeter (11) and the condenser (9).
Fig. 4 is according to provided by the present invention, turn cold to coagulate-evaporimeter is the structure and the schematic flow sheet of two sections heat-obtaining type cascade type heat pumps of composite condensation-evaporimeter scheme; Be that with different place shown in Figure 1 it adopts the single compressed machine, the compression to first working medium is finished in the low pressure compression section (1A) of compressor, and the high pressure compressed section (2A) of compressor is finished the compression to second working medium.
Adopt one group of data that substantive meaning of the present invention is described below:
Waste heat source temperature with steady temperature is 30 ℃, heated medium to be heated to 100 ℃ by 60 ℃, calculate for simplifying, though suppose that adopting whole heat transfer links is that the no temperature difference, circulation are reversible Carnot cycle---do so to simplify, do not influence the essence of interpretation problems.
1. the single hop heat-obtaining type superposition type unit that adopts two independent heat pumps to form, the unit performance index is
COP＝(273.15+100)/(100-30)＝5.33
2. adopt two sections heat-obtaining superposition type units: low temperature level heat pump flowsheet is heated to 80 ℃ with heated medium by 60 ℃, and the heat pump flowsheet of high temperature level is heated to 100 ℃ with heated medium by 80 ℃, and then the performance index of first heating period is
COP
1＝(273.15+80)/(80-30)＝7.06
The performance index of second heating period is
COP
2＝(273.15+100)/(100-30)＝5.33
The combination property index of two heating periods is
COP＝(7.06×20+5.33×20)/(100-60)＝6.20
As seen, the performance index of unit increases (6.20-5.33)/(5.33)=16.32% behind employing the present invention, has improved the performance index of unit largely, and energy-saving benefit is good.
Subsection heat-taking type overlapping heat pump proposed by the invention has following effect or advantage:
1. reduce cooling, the condensation heat transfer temperature difference between working medium and the heated medium, thereby reduced the Irreversible factor of unit, Can improve largely the performance index of unit.
2. as heat pump, the occasion that unit is wide in the heat supply temperature interval, heat supply temperature is high has higher performance index, thereby can To realize the deep exploitation of waste heat; As refrigeration machine, can when keeping higher coefficient of refrigerating performance, reduce the cooling medium parameter Requirement, or under same condition of work, reduce power consumption.
3. the unit under the more identical condition of work, the present invention mainly be become the Condensation-Evaporator of single type into compound condensation-Evaporimeter, or increased corresponding condenser and choke valve, so the change of unit on structure and cost and little.
4. in the occasion that is applied to load, the heat supply temperature excursion is bigger, be conducive to bring into play low temperature level heat-obtaining section performance index height Advantage, the combination property index that heats or freeze is improved.
Claims (1)
1. subsection heat-taking type overlapping heat pump, what the low temperature level flow process that it is characterized in that unit satisfied the heat demand of high temperature level flow process and heated medium low-temperature zone simultaneously finishes the high temperature section heat demand of heated medium with heat demand and by high temperature level flow process, and being divided into turns cold coagulates-and evaporimeter is new two kinds of fundamental types of heat pump flowsheet of associated components formation of composite condensation-evaporimeter and newly-increased condenser, choke valve and superposition type unit; Turning cold with fixed attention-evaporimeter is in the subsection heat-taking type overlapping heat pump of composite condensation-evaporimeter, compressor (1) is by first working medium working steam channel connection composite condensation-evaporimeter (4), composite condensation-evaporimeter (4) is communicated with evaporimeter (5) through choke valve (7) again, evaporimeter (5) also has the first working medium working steam channel connection compressor (1), evaporimeter (5) also has pipeline to be communicated with the waste heat medium, composite condensation-evaporimeter (4) also has pipeline to be communicated with heated medium, compressor (2) also has the second working substance steam pipeline to be communicated with condenser (3), condenser (3) also has pipeline to be communicated with compressor (2) through the second working medium working steam pipeline again after choke valve (6) is communicated with composite condensation-evaporimeter (4), condenser (3) also has pipeline to be communicated with heated medium, compressor (1), composite condensation-evaporimeter (4), the choke valve (7) and the evaporimeter basic elements of character such as (5) are formed low temperature level heat pump flowsheet and structure, compressor (2), condenser (3), choke valve (6) and composite condensation-evaporimeter basic elements of character such as (4) constitute high temperature level heat pump flowsheet and structure, obtain the heat pump structure and the flow process of other temperature section by that analogy; At newly-increased condenser, the associated components of choke valve and superposition type unit constitutes in the subsection heat-taking type overlapping heat pump of new heat pump flowsheet, compressor (1) is by the first working medium working steam channel connection condenser (4B), condenser (4B) is communicated with evaporimeter (5) through choke valve (7A) again, evaporimeter (5) also has the first working medium working steam channel connection compressor (1), evaporimeter (5) also has pipeline to be communicated with the waste heat medium, condenser (4B) also has pipeline to be communicated with heated medium, compressor (2) links to each other with condenser (3) by the second working medium working steam passage, condenser (3) again after choke valve (6) is communicated with condensation-evaporimeter (4A) again through the second working medium working steam channel connection compressor (2), condensation-evaporimeter (4A) also has pipeline and is communicated with evaporimeter (5) and the first working substance steam channel connection compressor (1) is arranged through choke valve (7), condenser (3) also has pipeline to be communicated with heated medium, compressor (1), condenser (4B), the choke valve (7A) and the evaporimeter basic elements of character such as (5) are formed low temperature level heat pump flowsheet and structure, compressor (1), condensation-evaporimeter (4A), the choke valve (7) and the evaporimeter basic elements of character such as (5) are formed the low temperature level part of overlapping flow process, compressor (2), condenser (3), choke valve (6) and condensation-evaporimeter basic elements of character such as (4A) constitute high temperature level heat pump flowsheet and structure, in like manner obtain the heat pump structure and the flow process of other temperature section; On two kinds of basic structure form bases, can obtain the subsection heat-taking type overlapping heat pump of other specific constructive form; This invention has reduced the temperature difference of unit diabatic process, has improved the performance index of unit, is particularly suitable for that the heated medium temperature range is wide, heating finishing temperature high heat supply occasion, can reduce wasted work etc. during as refrigeration machine.
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103459925A (en) * | 2011-03-31 | 2013-12-18 | 三浦工业株式会社 | Steam generation system |
| CN107270536A (en) * | 2017-07-24 | 2017-10-20 | 浙江正理生能科技有限公司 | A kind of cascade type heat pump |
| CN108387021A (en) * | 2018-05-28 | 2018-08-10 | 天津商业大学 | A kind of classification heat pump steam generation facility |
| CN109028571A (en) * | 2018-09-19 | 2018-12-18 | 东莞市正旭新能源设备科技有限公司 | overlapping air source heat pump |
| CN109114833A (en) * | 2017-06-22 | 2019-01-01 | 华北电力大学（保定） | A kind of cascade high-temperature heat pump system |
| CN110260547A (en) * | 2019-06-13 | 2019-09-20 | 科希曼电器有限公司 | Temperature protection system for cascade type heat pump |
| CN113074466A (en) * | 2021-04-29 | 2021-07-06 | 山西山安蓝天节能科技股份有限公司 | Large-temperature-difference multistage compression pure heat pump system suitable for recovering waste heat of power plant |
| WO2023005155A1 (en) * | 2021-07-29 | 2023-02-02 | 江苏区宇能源有限公司 | Multi-compressor one-pass segmented compression type water chiller |
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- 2008-02-03 CN CNA2008100141625A patent/CN101231046A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103459925A (en) * | 2011-03-31 | 2013-12-18 | 三浦工业株式会社 | Steam generation system |
| CN103459925B (en) * | 2011-03-31 | 2015-06-17 | 三浦工业株式会社 | Steam generation system |
| CN109114833A (en) * | 2017-06-22 | 2019-01-01 | 华北电力大学（保定） | A kind of cascade high-temperature heat pump system |
| CN107270536A (en) * | 2017-07-24 | 2017-10-20 | 浙江正理生能科技有限公司 | A kind of cascade type heat pump |
| CN108387021A (en) * | 2018-05-28 | 2018-08-10 | 天津商业大学 | A kind of classification heat pump steam generation facility |
| CN109028571A (en) * | 2018-09-19 | 2018-12-18 | 东莞市正旭新能源设备科技有限公司 | overlapping air source heat pump |
| CN110260547A (en) * | 2019-06-13 | 2019-09-20 | 科希曼电器有限公司 | Temperature protection system for cascade type heat pump |
| CN113074466A (en) * | 2021-04-29 | 2021-07-06 | 山西山安蓝天节能科技股份有限公司 | Large-temperature-difference multistage compression pure heat pump system suitable for recovering waste heat of power plant |
| WO2023005155A1 (en) * | 2021-07-29 | 2023-02-02 | 江苏区宇能源有限公司 | Multi-compressor one-pass segmented compression type water chiller |
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