Kev Paub Txog Cov Tub Txias Kev Kho thiab Kev Ua Haujlwm

1. Condensation kub
Lub condensation kub ntawm lub compressor system yog hais txog qhov kub ntawm lub refrigerant condenses nyob rau hauv lub condenser, thiab cov refrigerant vapor siab yog lub condensation siab.
Lub condensation kub yog ib qho ntawm cov haujlwm tseem ceeb hauv lub voj voog tub yees. Rau cov khoom siv tub yees tiag tiag, vim yog qhov me me ntawm lwm cov qauv tsim, qhov ntsuas kub ntawm condensation tuaj yeem hais tias yog qhov tseem ceeb tshaj plaws ntawm kev ua haujlwm. Nws yog ncaj qha ntsig txog qhov ua kom txias ntawm lub tub yees, kev nyab xeeb thiab kev ntseeg tau. thiab qib kev siv hluav taws xob.
2. evaporation kub
Cov evaporation kub yog hais txog qhov kub thiab txias thaum lub tub yees evaporates thiab boils nyob rau hauv lub evaporator, uas sib haum mus rau evaporation siab. Lub evaporation kub kuj yog ib qho tseem ceeb parameter nyob rau hauv lub tub yees system.
Qhov ntsuas kub ntawm evaporation yog qhov zoo tshaj plaws ntawm lub tub yees, tab sis qhov ntsuas kub ntawm lub tub yees hauv kev ua haujlwm tiag tiag yog me ntsis qis dua qhov kub ntawm lub tub yees los ntawm 3 txog 5 degrees.
3. Suction kub
Qhov ntsuas kub ntawm qhov nqus yog hais txog qhov ntsuas kub thaum lub tub yees nkag mus rau hauv compressor, uas feem ntau siab dua qhov kub ntawm evaporation. Vim tias qhov ntsuas kub evaporation yog qhov kub thiab txias ntawm cov tub yees, thiab qhov kub ntawm qhov nqus yog qhov kub ntawm cov roj superheated, lub sijhawm no lub tub yees ua cov roj superheated. Nyob rau lub sijhawm no, qhov sib txawv ntawm qhov ntsuas kub thiab qhov ntsuas kub evaporation yog qhov suction superheat.
4. Superheat
Lub ntsiab lus ntawm superheat: yog hais txog qhov sib txawv ntawm qhov kub thiab txias ntawm sab qis thiab qhov cub hauv qhov kub-rhiab qhov muag.
Txoj kev ntsuas superheat: ntsuas qhov evaporation siab ntawm qhov chaw ze li sai tau rau qhov ntsuas kub ntsuas qhov muag, hloov qhov kev nyeem ntawv mus rau qhov kub thiab txias, thiab tom qab ntawd rho tawm qhov kub ntawm qhov ntsuas kub ntawm qhov ntsuas kub ntawm qhov ntsuas kub. Lub superheat yuav tsum nyob nruab nrab ntawm 5-8 degree .
5. Supercooling

Nyob rau hauv engineering, lub tso pa siab feem ntau suav hais tias yog kwv yees li lub condensing siab, thiab qhov sib txawv ntawm qhov kub thiab txias ntawm cov kua saturated coj mus rau lub tso siab thiab qhov kub ntawm cov kua ntawm lub qhov hluav taws xob condenser yog xam raws li lub subcooling degree. Yog vim li cas rau qhov kwv yees no yog tias lub siab poob hauv lub condenser me me piv rau cov evaporator. Rau cov cua txias condensers, subcooling degree ntawm 3 txog 5 degrees yog qhov tsim nyog dua. Thaum lub tshuab tub yees circulates ib txwm, lub qhov hluav taws xob ntawm lub condenser feem ntau muaj qee yam ntawm subcooling.
6. Cov nyhuv ntawm suction superheat
Yog tias tsis muaj superheat hauv qhov nqus, nws tuaj yeem ua rau huab cua rov qab nqa cov kua, thiab tseem ua rau cov kua dej ntub dej ua rau lub compressor puas. Txhawm rau kom tsis txhob muaj qhov tshwm sim no, yuav tsum muaj qee qib ntawm kev nqus superheat los xyuas kom meej tias tsuas yog chav qhuav nkag mus rau hauv compressor (txiav txim siab los ntawm qhov xwm txheej ntawm cov tub yees, lub neej ntawm superheat txhais tau hais tias cov kua refrigerant evaporates).
Txawm li cas los xij, qhov siab dhau ntawm superheat kuj muaj qhov tsis zoo. Kev kub siab ntawm superheat yuav ua rau nce qhov kub ntawm lub compressor (kua pa superheat), thiab kev ua haujlwm tsis zoo ntawm lub compressor yuav txo tau lub neej kev pab. Yog li ntawd, lub suction superheat yuav tsum tau tswj nyob rau hauv ib tug tej yam ntau yam.
Lub expansion valve paub qhov sib txawv ntawm qhov kub thiab txias ntawm huab cua rov qab thiab qhov tseeb evaporating siab (raws li qhov kub thiab txias saturation) los ntawm qhov ntsuas qhov kub thiab txias tso rau ntawm cov cua xa rov qab ntawm lub compressor lossis qhov hluav taws xob ntawm lub evaporator (qhov kub sib txawv yog lub superheat ntawm lub tshuab nqus tsev), thiab teeb tsa Kho qhov qhib ntawm lub expansion valve raws li qhov ruaj khov superheat yog sib npaug rau kev kho cov kua dej ntawm cov evaporator, thiab thaum kawg tswj cov suction superheat.
Tam sim no qee cov qauv (xws li kev hloov pauv ntau zaus) kuj muaj qhov nthuav dav uas tshwj xeeb tswj cov qib ntawm condensation subcooling. Thaum lub degree ntawm subcooling tsis txaus, ua rau kom qhib lub expansion valve ntawm lub subcooling Circuit Court kom cov kua txau kom txias cov tub yees nyob rau hauv lub ntsiab Circuit Court thiab txhim kho cov condensation nyhuv.
Qhov kub ntawm cov tub yees thaum nws evaporates hauv evaporator muaj kev cuam tshuam zoo rau kev ua kom txias. Rau txhua 1 degree nws txo qis, lub zog yuav tsum tau nce los ntawm 4 feem pua ​​​​kom tsim tau tib lub peev xwm txias. Yog li ntawd, yog hais tias tej yam kev mob tso cai, tsim nyog nce lub evaporation kub. Nws yuav muaj txiaj ntsig los ua kom muaj txiaj ntsig ntawm lub tub yees system.
7. evaporation kub hloov
evaporation kub hloov yog los tswj lub evaporation siab nyob rau hauv lub sij hawm ua hauj lwm, uas yog, los kho tus nqi siab ntawm lub low-pressure gauge. Thaum lub sijhawm ua haujlwm, qhov qhib ntawm lub thermal expansion valve (los yog lub tog raj kheej valve) yog hloov kho kom haum rau lub siab qis. Yog hais tias qhov qhib ntawm lub expansion valve yog loj, qhov kub thiab txias evaporation nce, qhov qis siab kuj nce, thiab lub peev xwm txias yuav nce; Yog hais tias qhov qhib ntawm lub expansion valve yog me me, qhov kub thiab txias evaporation txo, qhov qis siab kuj txo, thiab lub peev xwm txias yuav txo.
8. Cov yam ntxwv cuam tshuam rau qhov ntsuas kub ntawm evaporation
Hauv kev ua haujlwm tiag tiag ntawm cov khoom siv tub yees, qhov kev hloov pauv ntawm evaporation kub yog qhov nyuaj heev. Ntxiv nrog rau kev tswj ncaj qha los ntawm kev nthuav dav valve (throttle valve), nws kuj tseem cuam tshuam rau lub tshav kub ntawm cov khoom txias, qhov chaw hloov hluav taws xob ntawm cov evaporator thiab lub peev xwm ntawm compressor. ntsig txog. Thaum ib qho ntawm peb qhov kev hloov pauv no, evaporation siab thiab kub ntawm lub tub yees yuav hloov pauv raws li qhov xav tau. Yog li ntawd, txhawm rau txhawm rau ua haujlwm ruaj khov ntawm cov evaporation kub nyob rau hauv qhov chaw teev tseg, tus neeg teb xov tooj yuav tsum paub txog qhov hloov pauv ntawm qhov ntsuas kub ntawm lub sijhawm. Raws li qhov ntsuas kub evaporation Raws li txoj cai hloov pauv ntawm lub cev, qhov ntsuas kub ntawm evaporation tuaj yeem hloov kho raws sijhawm thiab raug.
9. Cov nyhuv ntawm tshav kub load rau evaporation kub
Thaum tshav kub kub load yog hais txog lub tshav kub tso tawm ntawm cov khoom kom txias. Thaum lub tshav kub load nce thiab lwm yam kev mob tseem tsis tau hloov, qhov kub ntawm evaporation yuav nce, qhov qis-pressure siab kuj yuav nce, thiab superheat ntawm cov roj suction yuav nce. Nyob rau hauv cov ntaub ntawv no, lub expansion valve tsuas yog yuav tsum tau qhib kom lub refrigerant ncig, tab sis lub expansion valve tsis tuaj yeem raug kaw kom txo qis qis vim qhov nce ntawm qhov tsis tshua muaj siab. Ua li no yuav ua rau muaj kev nqus superheat ntau dua, nce qhov cua sov, thiab ua haujlwm tsis zoo. Thaum kho lub expansion valve, qhov kev hloov pauv yuav tsum tsis txhob loj dhau txhua lub sijhawm, thiab nws yuav tsum tau ua haujlwm rau qee lub sijhawm tom qab kev hloov kho kom muaj kev cuam tshuam txog seb qhov kub thiab txias muaj peev xwm sib npaug.
Qhov cuam tshuam ntawm lub zog hloov pauv ntawm lub tub yees compressor ntawm qhov ntsuas kub evaporation. Thaum lub zog ntawm lub tub yees compressor yog nce, lub peev xwm nqus ntawm lub compressor yuav nce raws li. Thaum lwm yam xwm txheej tseem tsis hloov pauv, qhov siab yuav nce ntxiv thiab qhov qis qis yuav txo qis. Cov evaporation kub kuj yuav poob raws li. Txhawm rau txuas ntxiv kom tswj tau qhov ntsuas kub ntawm cov evaporation uas yuav tsum tau ua los ntawm cov txheej txheem tsim khoom, nws yog ib qho tsim nyog yuav tsum tau qhib lub valve loj loj kom nce qhov siab qis mus rau qhov teev tseg. Tom qab lub tub yees compressor tsub kom lub zog khiav mus rau ib lub sij hawm, raws li qhov kub ntawm cov khoom yuav tsum tau txias tee, qhov kub thiab txias evaporation yuav maj mam txo (lub expansion valve tsis ua tej yam kev hloov). Qhov no yog vim qhov kub ntawm cov khoom yuav tsum tau txias qis thiab cov cua sov load txo. . Nyob rau hauv cov ntaub ntawv no, nws yuav tsum tsis txhob yuam kev rau lub siab poob, uas txhais tau hais tias cov kua yog tsis txaus los qhib lub expansion valve los ua kom cov kua. Hloov chaw, lub expansion valve yuav tsum raug kaw kom txo lub zog ua haujlwm ntawm lub tub yees compressor.
10. Qhov cuam tshuam ntawm tshav kub hloov chaw hloov ntawm evaporation kub
Qhov chaw hloov hluav taws xob feem ntau yog hais txog thaj tsam evaporation ntawm lub evaporator, thiab qhov kev hloov ntawm qhov chaw hloov hluav taws xob feem ntau yog hais txog qhov kev hloov ntawm qhov loj ntawm qhov evaporation cheeb tsam. Nyob rau hauv ib tug ua tiav cov tub yees, qhov chaw evaporation feem ntau yog tsau, tab sis nyob rau hauv lub lag luam tiag tiag, vim tsis txaus cov kua los yog roj tsub zuj zuj nyob rau hauv lub evaporator, evaporation cheeb tsam yog tas li hloov. Kev cuam tshuam ntawm qhov nce thiab txo qis ntawm thaj chaw evaporation ntawm qhov ntsuas kub ntawm evaporation yog qhov pib zoo ib yam li qhov nce thiab txo cov cua sov load ntawm qhov kub ntawm evaporation. Thaum qhov chaw evaporation nce, evaporation kub nce; Thaum qhov chaw evaporation txo, qhov kub ntawm evaporation txo. Yuav kom tswj tau qhov ntsuas kub uas yuav tsum tau ua, lub zog thiab nthuav dav valve yuav tsum tau hloov kho, thiab cov evaporator yuav tsum tau ntws thiab ntxuav kom muaj qhov sib npaug ntawm qhov sib npaug ntawm qhov chaw hloov hluav taws xob thiab lub peev xwm txias.
11. Kev sib raug zoo ntawm evaporation siab thiab evaporation kub
Qhov qis evaporating siab (tsis tshua muaj siab), qhov qis evaporating kub.
Cov kev sib raug zoo ntawm evaporation kub thiab txias peev xwm yog: thaum lub tub yees txaus tus nqi yog tas mus li, qhov qis dua qhov evaporation kub, qhov kub ntau dua qhov sib txawv nrog lub tshav kub load (kub cua), thiab ntau dua lub peev xwm txias. Hauv lwm lo lus, qhov qis dua qhov evaporation siab, qhov ntau dua qhov txias txias, thiab tib lub tub yees nrog tib lub zog evaporates ntawm qhov kub sib txawv, thiab nws cov cua sov latent ntawm evaporation txawv. Qhov qis dua qhov evaporation kub, qhov ntau dua qhov kub ntawm evaporation thiab lub zog nqus cua sov.
Condensing kub: 40 degree, degree ntawm superheat: 10 degree, degree ntawm subcooling: 5 degree, thiab lwm yam tej yam kev mob tsis hloov, tus cuam tshuam ntawm kev hloov ntawm evaporation kub ntawm lub txias muaj peev xwm, lub hwj chim thiab COP ntawm lub compressor.