Article(id=1320037760912708467, tenantId=1146029695717560320, journalId=1316781260334530699, issueId=1320037688510628614, articleNumber=null, orderNo=null, doi=10.3969/j.issn.1005-0329.2026.04.006, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1758816000000, receivedDateStr=2025-09-26, revisedDate=1771084800000, revisedDateStr=2026-02-15, acceptedDate=null, acceptedDateStr=null, onlineDate=1792651127316, onlineDateStr=2026-10-22, pubDate=1777478400000, pubDateStr=2026-04-30, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1792651127316, onlineIssueDateStr=2026-10-22, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1792651127316, creator=13701087609, updateTime=1792651127316, updator=13701087609, issue=Issue{id=1320037688510628614, tenantId=1146029695717560320, journalId=1316781260334530699, year='2026', volume='54', issue='4', pageStart='1', pageEnd='118', issueExtLink='null', onlineDate='null', pubDate='1777478400000', pubDateStr='2026-04-30', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1792651110055, creator='13701087609', updateTime=1792656236652, updator='13701087609', preIssue=null, nextIssue=null, articleTotal=null, ext={EN=IssueExt(id=1320059191075656665, tenantId=1146029695717560320, journalId=1316781260334530699, issueId=1320037688510628614, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1320059191075656666, tenantId=1146029695717560320, journalId=1316781260334530699, issueId=1320037688510628614, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null, downloadFileDto=null}, startPage=45, endPage=54, ext={EN=ArticleExt(id=1320037761072092020, articleId=1320037760912708467, tenantId=1146029695717560320, journalId=1316781260334530699, language=EN, title=Comparative study on thermodynamic performance of CO
2 and CO
2/R41 transcritical single/two‑stage cycle systems, columnId=null, journalTitle=Fluid Machinery, columnName=null, runingTitle=null, highlight=null, articleAbstract=
In order to improve the comprehensive performance of the CO2 transcritical heat pump water heater system,thermodynamic models of single‑stage and two‑stage cycles adopting pure CO₂ and CO₂/R41 azeotropic mixture as working fluids are established.Based on energy and exergy analysis methods,the comprehensive performance of the four cycle systems is calculated and comparatively analyzed.The results show that the two‑stage cycle can effectively reduce the compressor discharge temperature (a maximum reduction of 61.79 ℃) and power consumption,accompanied by a partial decline in exergy efficiency.The CO₂/R41 mixed working fluid dramatically decreases the optimal high pressure (a maximum reduction of 20.96%) and increases the specific heating capacity (a maximum increment of 19.68%),while raising the specific power consumption of the compressor.The addition of R41 exerts a slight influence on the irreversible loss ratio of each component in the CO₂ transcritical cycle.Among the four cycle systems,the capillary tube presents relatively high irreversible loss.The CO₂/R41 two‑stage cycle system achieves the highest COP and superior specific heating capacity,as well as a relatively low discharge temperature and operating pressure.This study can provide theoretical support for the engineering application and performance optimization of CO₂/R41 mixed working fluids in two‑stage transcritical heat pump systems.
, authors=Dong WANG, Hao YU, Jiuchao HONG, Shengong MEI, Kangkang ZHANG, Jinli LU, authorsList=Dong WANG, Hao YU, Jiuchao HONG, Shengong MEI, Kangkang ZHANG, Jinli LU, authorCompany=null, correspAuthors=null, authorNote=null, correspAuthorsNote=null, copyrightStatement=null, copyrightOwner=null, extLink=null, articleAbsUrl=null, sourceXml=null, magXml=null, pdfUrl=null, pdf=null, pdfFileSize=null, pdfExtLink=null, richHtmlUrl=null, mobilePdfUrl=null, reviewReport=null, pdfFirstPage=null, abstractGraph=null, abstractGraphContent=null, abstractVideo=null, citation=null, cebUrl=null, magXmlContent=null, mapNumber=null, fund=null), CN=ArticleExt(id=1320037764222014345, articleId=1320037760912708467, tenantId=1146029695717560320, journalId=1316781260334530699, language=CN, title=CO
2及CO
2/R41跨临界单/双级循环系统的热力学性能对比研究, columnId=1317484287230853622, journalTitle=流体机械, columnName=设计计算, runingTitle=null, highlight=null, articleAbstract=
为提升CO2跨临界热泵热水器系统综合性能,建立以CO2及CO2/R41共沸混合物为工质的单级与双级循环系统热力学模型,采用能量和㶲分析的方法,对4种循环系统的综合性能进行计算与对比分析。结果表明,双级循环可有效降低压缩机的排气温度(最多降低61.79 ℃)与功耗,但会损失部分㶲效率;CO2/R41混合工质则显著降低最优高压(最多降低20.96%),并增大单位制热量(最多增加19.68%),但是会增加压缩机单位功耗;R41的加入对CO2跨临界循环系统中各部件的不可逆损失率影响很小,4种循环系统中,毛细管的不可逆损失都较大;CO2/R41双级循环系统具有最高的COP和较高的单位制热量,并兼顾了较低的排气温度与工作压力。研究可为CO2/R41混合工质在双级循环热泵系统中的应用与优化提供理论指导。
, authors=王栋, 余豪, 洪久超, 梅申功, 章康康, 鲁进利, authorsList=王栋, 余豪, 洪久超, 梅申功, 章康康, 鲁进利, authorCompany=null, correspAuthors=null, authorNote=
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作者向本刊所投稿件一经本刊录用,则该论文的复制权、发行权、信息网络传播权、翻译权、汇编权等权利视为自动转让给本刊。本刊为国内各主要数据库收录期刊,本刊所发表的稿件将同时通过互联网进行网络出版或提供信息服务。, copyrightOwner=null, extLink=null, articleAbsUrl=null, sourceXml=6ChjxlijIYyUKvhVgJr+Hw==, magXml=msOro8phDkdvrnqhKfzV3Q==, pdfUrl=null, pdf=null, pdfFileSize=null, pdfExtLink=null, richHtmlUrl=null, mobilePdfUrl=null, reviewReport=null, pdfFirstPage=null, abstractGraph=eoYngoTDrkBlfluQOlP+uA==, abstractGraphContent=null, abstractVideo=null, citation=null, cebUrl=null, magXmlContent=c81x+lI43kwM8c9S1FavYA==, mapNumber=null, fund=null)}, authors=[Author(id=1320037764586918798, tenantId=1146029695717560320, journalId=1316781260334530699, articleId=1320037760912708467, orderNo=0, firstName=null, middleName=null, lastName=null, nameCn=null, orcid=null, stid=null, country=null, authorPic=null, dead=0, email=wangdong224545@163.com, emailSecond=null, emailThird=null, correspondingAuthor=0, authorType=1, ext={EN=AuthorExt(id=1320037764674999184, tenantId=1146029695717560320, journalId=1316781260334530699, articleId=1320037760912708467, authorId=1320037764586918798, language=EN, stringName=Dong WANG, firstName=Dong, middleName=null, lastName=WANG, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=null, address=School of Civil Engineering and Architecture,Anhui University of Technology,Ma'Anshan 243002,China, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null), CN=AuthorExt(id=1320037764746302353, tenantId=1146029695717560320, journalId=1316781260334530699, articleId=1320037760912708467, authorId=1320037764586918798, language=CN, stringName=王栋, firstName=null, middleName=null, lastName=null, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=null, address=安徽工业大学 建筑工程学院,安徽 马鞍山 243002, bio={"content":"
王栋(1981),男,博士,副教授,主要从事CO2制冷技术相关的研究,通信地址:243002安徽省马鞍山市安徽工业大学建筑工程学院建工北楼204,E-mail:wangdong224545@163.com。
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王栋(1981),男,博士,副教授,主要从事CO2制冷技术相关的研究,通信地址:243002安徽省马鞍山市安徽工业大学建筑工程学院建工北楼204,E-mail:wangdong224545@163.com。
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Schematic diagram and corresponding lgP-h diagram of the CO₂ and CO₂/R41 single‑stage cycles, figureFileSmall=AHfMCyRgxW9IZq7ELIzKlQ==, figureFileBig=eoYngoTDrkBlfluQOlP+uA==, tableContent=null), ArticleFig(id=1320037768412124086, tenantId=1146029695717560320, journalId=1316781260334530699, articleId=1320037760912708467, language=CN, label=图1, caption=
CO2,CO2/R41单级循环示意和相应的lgP-h图, figureFileSmall=AHfMCyRgxW9IZq7ELIzKlQ==, figureFileBig=eoYngoTDrkBlfluQOlP+uA==, tableContent=null), ArticleFig(id=1320037768588284855, tenantId=1146029695717560320, journalId=1316781260334530699, articleId=1320037760912708467, language=EN, label=Fig.2, caption=
Schematic diagram and corresponding lgP-h diagram of the CO₂ and CO₂/R41 two‑stage cycles, figureFileSmall=sYWy+k/B2oRUl0O4oKbTEg==, figureFileBig=i4o+WJ72VSYDXWv/td0Tjg==, tableContent=null), ArticleFig(id=1320037768647005112, tenantId=1146029695717560320, journalId=1316781260334530699, articleId=1320037760912708467, language=CN, label=图2, caption=
CO2,CO2/R41双级循环示意和相应的lgP-h图, figureFileSmall=sYWy+k/B2oRUl0O4oKbTEg==, figureFileBig=i4o+WJ72VSYDXWv/td0Tjg==, tableContent=null), ArticleFig(id=1320037768709919673, tenantId=1146029695717560320, journalId=1316781260334530699, articleId=1320037760912708467, language=EN, label=Fig.3, caption=
Simulation flowchart of the single‑stage and two‑stage cycle systems, figureFileSmall=qT0IeN+EEOGBlydPN425LQ==, figureFileBig=ysw318kSHI3UJFszU2vD2A==, tableContent=null), ArticleFig(id=1320037768764445626, tenantId=1146029695717560320, journalId=1316781260334530699, articleId=1320037760912708467, language=CN, label=图3, caption=
单/双级循环系统模拟流程图, figureFileSmall=qT0IeN+EEOGBlydPN425LQ==, figureFileBig=ysw318kSHI3UJFszU2vD2A==, tableContent=null), ArticleFig(id=1320037768831554491, tenantId=1146029695717560320, journalId=1316781260334530699, articleId=1320037760912708467, language=EN, label=Fig.4, caption=
Variation of exhaust‑gas temperature with and for the four cycle systems, figureFileSmall=jlQnJx4K34LdBpgjcNwP0w==, figureFileBig=uAfRWYetlyuWE/w2S3Sssg==, tableContent=null), ArticleFig(id=1320037768902857660, tenantId=1146029695717560320, journalId=1316781260334530699, articleId=1320037760912708467, language=CN, label=图4, caption=
4种循环系统中排气温度随和的变化情况, figureFileSmall=jlQnJx4K34LdBpgjcNwP0w==, figureFileBig=uAfRWYetlyuWE/w2S3Sssg==, tableContent=null), ArticleFig(id=1320037768974160829, tenantId=1146029695717560320, journalId=1316781260334530699, articleId=1320037760912708467, language=EN, label=Fig.5, caption=
Variation of optimal high pressure with and for the four cycle systems, figureFileSmall=/G5ibpgwevMl2AVO9/A0lg==, figureFileBig=OZNlJCMR9Pr8AwjCFVtbQg==, tableContent=null), ArticleFig(id=1320037769041269694, tenantId=1146029695717560320, journalId=1316781260334530699, articleId=1320037760912708467, language=CN, label=图5, caption=
4种循环系统中最优高压随和的变化情况, figureFileSmall=/G5ibpgwevMl2AVO9/A0lg==, figureFileBig=OZNlJCMR9Pr8AwjCFVtbQg==, tableContent=null), ArticleFig(id=1320037769108378559, tenantId=1146029695717560320, journalId=1316781260334530699, articleId=1320037760912708467, language=EN, label=Fig.6, caption=
Variation of specific heating capacity with and for the four cycle systems, figureFileSmall=6aGsYFNVI6DOLECBjAgOBg==, figureFileBig=AZdzAi3wL4Q6SZ36pZtY0Q==, tableContent=null), ArticleFig(id=1320037769175487424, tenantId=1146029695717560320, journalId=1316781260334530699, articleId=1320037760912708467, language=CN, label=图6, caption=
4种循环系统中单位制热量随和的变化情况, figureFileSmall=6aGsYFNVI6DOLECBjAgOBg==, figureFileBig=AZdzAi3wL4Q6SZ36pZtY0Q==, tableContent=null), ArticleFig(id=1320037769234207681, tenantId=1146029695717560320, journalId=1316781260334530699, articleId=1320037760912708467, language=EN, label=Fig.7, caption=
Variation of specific power consumption with and for the four cycle systems, figureFileSmall=h3W5PBoH2oUaYEg9vMZzog==, figureFileBig=sTYGQKMfJFLJRAzv8kV6LQ==, tableContent=null), ArticleFig(id=1320037769313899458, tenantId=1146029695717560320, journalId=1316781260334530699, articleId=1320037760912708467, language=CN, label=图7, caption=
4种循环系统中单位功耗随和的变化情况, figureFileSmall=h3W5PBoH2oUaYEg9vMZzog==, figureFileBig=sTYGQKMfJFLJRAzv8kV6LQ==, tableContent=null), ArticleFig(id=1320037769401979843, tenantId=1146029695717560320, journalId=1316781260334530699, articleId=1320037760912708467, language=EN, label=Fig.8, caption=
Variation of COP with and for the four cycle systems, figureFileSmall=DE5GBf37mn6VvPwhEOwxuA==, figureFileBig=jFyzfWUQED+QEf5uyYOo8A==, tableContent=null), ArticleFig(id=1320037769469088708, tenantId=1146029695717560320, journalId=1316781260334530699, articleId=1320037760912708467, language=CN, label=图8, caption=
4种循环系统中COP与和的变化情况, figureFileSmall=DE5GBf37mn6VvPwhEOwxuA==, figureFileBig=jFyzfWUQED+QEf5uyYOo8A==, tableContent=null), ArticleFig(id=1320037769552974789, tenantId=1146029695717560320, journalId=1316781260334530699, articleId=1320037760912708467, language=EN, label=Fig.9, caption=
Variation of exergy efficiency with and for the four cycle systems, figureFileSmall=tdu7o/izBA7DdhvrWO8PjQ==, figureFileBig=d8QCLea4NIw49AJFPKu6DA==, tableContent=null), ArticleFig(id=1320037769615889350, tenantId=1146029695717560320, journalId=1316781260334530699, articleId=1320037760912708467, language=CN, label=图9, caption=
4种循环系统中㶲效率随和的变化情况, figureFileSmall=tdu7o/izBA7DdhvrWO8PjQ==, figureFileBig=d8QCLea4NIw49AJFPKu6DA==, tableContent=null), ArticleFig(id=1320037769687192519, tenantId=1146029695717560320, journalId=1316781260334530699, articleId=1320037760912708467, language=EN, label=Fig.10, caption=
Proportion of irreversible losses for each system component, figureFileSmall=irFR4cpMy+uAyPnFMRunuA==, figureFileBig=xVT36NzCqepTFnb2Sxyj4Q==, tableContent=null), ArticleFig(id=1320037769745912776, tenantId=1146029695717560320, journalId=1316781260334530699, articleId=1320037760912708467, language=CN, label=图10, caption=
系统各部件的不可逆损失占比, figureFileSmall=irFR4cpMy+uAyPnFMRunuA==, figureFileBig=xVT36NzCqepTFnb2Sxyj4Q==, tableContent=null), ArticleFig(id=1320037769817215945, tenantId=1146029695717560320, journalId=1316781260334530699, articleId=1320037760912708467, language=EN, label=Tab.1, caption=
Results and errors between the empirical correlation for optimal high pressure by Sarkar and model predictions.
, figureFileSmall=null, figureFileBig=null, tableContent=
| /℃ | /℃ | /MPa | /MPa | 误差/% |
|---|
| -10 | 35 | 8.801 | 8.770 | 0.352 |
| -10 | 40 | 10.004 | 10.070 | 0.660 |
| -10 | 45 | 11.217 | 11.345 | 1.141 |
| -5 | 35 | 8.716 | 8.715 | 0.011 |
| -5 | 40 | 9.919 | 9.990 | 0.716 |
| -5 | 45 | 11.132 | 11.265 | 1.194 |
| 0 | 35 | 8.631 | 8.650 | 0.220 |
| 0 | 40 | 9.834 | 9.905 | 0.722 |
| 0 | 45 | 11.047 | 11.165 | 1.068 |
), ArticleFig(id=1320037769880130506, tenantId=1146029695717560320, journalId=1316781260334530699, articleId=1320037760912708467, language=CN, label=表1, caption=
“Sarkar”最优高压经验关联式与模型预测的结果和误差
, figureFileSmall=null, figureFileBig=null, tableContent=
| /℃ | /℃ | /MPa | /MPa | 误差/% |
|---|
| -10 | 35 | 8.801 | 8.770 | 0.352 |
| -10 | 40 | 10.004 | 10.070 | 0.660 |
| -10 | 45 | 11.217 | 11.345 | 1.141 |
| -5 | 35 | 8.716 | 8.715 | 0.011 |
| -5 | 40 | 9.919 | 9.990 | 0.716 |
| -5 | 45 | 11.132 | 11.265 | 1.194 |
| 0 | 35 | 8.631 | 8.650 | 0.220 |
| 0 | 40 | 9.834 | 9.905 | 0.722 |
| 0 | 45 | 11.047 | 11.165 | 1.068 |
), ArticleFig(id=1320037769980793803, tenantId=1146029695717560320, journalId=1316781260334530699, articleId=1320037760912708467, language=EN, label=Tab.2, caption=
Comparison of experimental values of the optimal high pressure in a single‑stage cycle with model predictions
, figureFileSmall=null, figureFileBig=null, tableContent=
| /℃ | /℃ | /MPa | /MPa | 误差/% |
|---|
| 5 | 30 | 7.540 | 7.353 | 2.480 |
| 5 | 32 | 8.018 | 7.829 | 2.357 |
| 5 | 34 | 8.267 | 8.306 | 0.469 |
| 5 | 36 | 8.700 | 8.785 | 0.967 |
| 0 | 30 | 7.436 | 7.438 | 0.027 |
| 0 | 32 | 7.798 | 7.914 | 1.465 |
| 0 | 34 | 8.109 | 8.391 | 3.361 |
| 0 | 36 | 8.714 | 8.871 | 1.769 |
| -5 | 30 | 7.453 | 7.523 | 0.931 |
| -5 | 32 | 7.914 | 7.999 | 1.063 |
| -5 | 34 | 8.386 | 8.477 | 1.068 |
| -9 | 30 | 7.545 | 7.591 | 0.606 |
| -9 | 32 | 8.056 | 8.067 | 0.136 |
| -9 | 34 | 8.513 | 8.544 | 0.363 |
| -9 | 36 | 9.020 | 9.023 | 0.033 |
), ArticleFig(id=1320037770056291276, tenantId=1146029695717560320, journalId=1316781260334530699, articleId=1320037760912708467, language=CN, label=表2, caption=
单级循环最优高压试验值与模型预测结果的比较
, figureFileSmall=null, figureFileBig=null, tableContent=
| /℃ | /℃ | /MPa | /MPa | 误差/% |
|---|
| 5 | 30 | 7.540 | 7.353 | 2.480 |
| 5 | 32 | 8.018 | 7.829 | 2.357 |
| 5 | 34 | 8.267 | 8.306 | 0.469 |
| 5 | 36 | 8.700 | 8.785 | 0.967 |
| 0 | 30 | 7.436 | 7.438 | 0.027 |
| 0 | 32 | 7.798 | 7.914 | 1.465 |
| 0 | 34 | 8.109 | 8.391 | 3.361 |
| 0 | 36 | 8.714 | 8.871 | 1.769 |
| -5 | 30 | 7.453 | 7.523 | 0.931 |
| -5 | 32 | 7.914 | 7.999 | 1.063 |
| -5 | 34 | 8.386 | 8.477 | 1.068 |
| -9 | 30 | 7.545 | 7.591 | 0.606 |
| -9 | 32 | 8.056 | 8.067 | 0.136 |
| -9 | 34 | 8.513 | 8.544 | 0.363 |
| -9 | 36 | 9.020 | 9.023 | 0.033 |
), ArticleFig(id=1320037771704652749, tenantId=1146029695717560320, journalId=1316781260334530699, articleId=1320037760912708467, language=EN, label=Tab.3, caption=
Comparison of two‑stage cycle experimental data with model predictions
, figureFileSmall=null, figureFileBig=null, tableContent=
| 参数 | /℃ | /℃ | /MPa | /MPa |
|---|
| 试验数据 | 0 | 35 | 8.60 | 5.4 |
| 预测数据 | 0 | 35 | 8.66 | 5.6 |
| 误差/% | — | — | 0.69 | 3.7 |
), ArticleFig(id=1320037771801121742, tenantId=1146029695717560320, journalId=1316781260334530699, articleId=1320037760912708467, language=CN, label=表3, caption=
双级循环试验值与模型预测结果的比较
, figureFileSmall=null, figureFileBig=null, tableContent=
| 参数 | /℃ | /℃ | /MPa | /MPa |
|---|
| 试验数据 | 0 | 35 | 8.60 | 5.4 |
| 预测数据 | 0 | 35 | 8.66 | 5.6 |
| 误差/% | — | — | 0.69 | 3.7 |
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