Yadda Ake Zaɓar Kwamfreso don Dakunan Sanyi: Aikace-aikacen Matsakaicin Zafi da na Ƙananan Zafi

Zaɓen madaidaicin compressor na ɗakin sanyi yana ɗaya daga cikin muhimman shawarwari a kowane aikin adana sanyi. Dole ne compressor ya dace da zafin ajiyar, nauyin samfur, refrigerant, ƙirar evaporator, yanayin condensing, wutar lantarki, da duty cycle. Na’urar da ta yi ƙanƙanta za ta sha wahala wajen saukar da zafi da kuma kiyaye yanayin zafi. Na’urar da ta yi girma fiye da kima na iya yin short-cycle, rage sarrafa danshi, ƙara lalacewa, da haifar da kuɗin aiki da ba dole ba.

Ga masu rarrabawa, kamfanonin sabis, da masu shigar da ɗakunan sanyi, ingantaccen tsarin zaɓe yana taimakawa wajen guje wa sauyawa da bai dace ba, jinkirin commissioning, da korafe-korafen abokan ciniki. Mafi amfani a matsayin wurin farawa shi ne zafin aikace-aikacen: shin ɗakin chiller ne na matsakaicin zafi, ko kuma freezer ne na ƙaramin zafi? Daga nan, ya kamata a duba zaɓen bisa ga evaporating temperature, condensing temperature, cooling capacity, nau’in refrigerant, da fasahar compressor.

Wannan jagorar zaɓen compressor na ɗakin sanyi tana bayyana manyan abubuwan da ya kamata a duba kafin zaɓar compressor na adana sanyi, compressor na walk in freezer, ko compressor na sauyawa don tsarin refrigeration da ke akwai.

Matsakaicin Zafi vs Ƙaramin Zafi: Matakin Zaɓe na Farko

Ana yawan raba ɗakunan sanyi zuwa aikace-aikacen matsakaicin zazzabi da ƙananan zazzabi. Wannan bambanci ba wai kawai game da saitin zazzabin ɗakin ba ne. Yana shafar jerin nau’in compressor, nauyin mota, kwararar nauyin refrigerant, dawowar mai, zaɓin expansion valve, da ƙirar evaporator.

Ɗakunan sanyi na matsakaicin zazzabi

Ana amfani da tsarin matsakaicin zazzabi don ajiyar sanyi inda dole ne a kiyaye kayayyaki sama da daskarewa ko kusa da daskarewa. Misalai na yau da kullum sun haɗa da:

• Ɗakunan ’ya’yan itace da kayan lambu
• Ajiyar kayan madara da abin sha
• Ɗakunan shirya naman sabo
• Walk-in chillers don gidajen abinci da manyan kantuna
• Ɗakunan magunguna ko na sarrafawa da ke buƙatar yanayin sanyi mai daidaito

Zazzabin ɗaki na yau da kullum na iya kasancewa kusan 0°C zuwa 10°C, gwargwadon samfurin. Compressor yana aiki a mafi girman zazzabin evaporation fiye da compressor na freezer, wanda yawanci ke nufin ingantaccen amfani da makamashi da ƙaramin compression ratio.

Compressor na matsakaicin zazzabi ba lallai ba ne ya dace da aikin daskarewa kai tsaye. Idan aka yi amfani da shi a zazzabin evaporation da ya yi ƙasa sosai fiye da yadda aka ƙera shi, yana iya yin aiki a wajen amintaccen operating envelope ɗinsa, ya yi zafi fiye da kima, ya rasa capacity, ko ya fuskanci matsalar rashin isasshen lubrication.

Ɗakunan sanyi na ƙananan zazzabi

Ana amfani da tsarin ƙananan zazzabi don ajiyar daskarewa da kayayyakin da dole ne su kasance ƙasa da daskarewa. Misalai na yau da kullum sun haɗa da:

• Firiza masu shiga ciki
• Dakunan daskararren nama da abincin teku
• Ajiyar ice cream
• Dakunan rarraba daskararren abinci
• Dakunan riƙe kaya bayan matakan daskarewa cikin sauri

Zafin ɗaki na yau da kullum na iya kasancewa kusan -18°C zuwa -25°C don ajiyar daskararru, tare da wasu aikace-aikace da ke buƙatar ƙananan zafi fiye da haka. An ƙera low temperature refrigeration compressor don yin aiki a ƙananan suction pressures da manyan compression ratios. Zai iya buƙatar girman motor daban, tsare-tsaren sanyaya, sarrafa mai, da iyakokin amfani da refrigerant da aka amince da su.

Don aikin maye gurbi, zafin ɗaki kaɗai bai isa ba. Dole ne a zaɓi walk in freezer compressor ta amfani da evaporating temperature da condensing temperature da ake tsammani, ba kawai saitin thermostat ba.

Muhimman Yanayin Aiki da Ke Ƙayyade Zaɓin Compressor

Ƙarfin compressor da amincinsa suna dogara da yanayin da yake aiki a ciki. Compressor ɗaya na iya bayar da ƙarfin sanyaya daban sosai a evaporating da condensing temperatures daban-daban. Saboda haka, ya kamata masu saye su guji zaɓi bisa horsepower ko girman jiki kawai.

Zafin ɗaki da nauyin samfur

Set point na ɗaki shi ne buƙatar da ake gani, amma compressor dole ne ya iya ɗaukar cikakken nauyin zafi. Zafi yana shiga ko kuma ana samar da shi a cikin ɗakin sanyi ta hanyoyi da dama:

• Samfurin da ke shiga ɗakin a zafin jiki mafi girma
• Watsawar zafi ta bango, rufi, da ƙasa
• Buɗe ƙofofi da shigar iska
• Mutanen da ke aiki a cikin ɗakin
• Haske, fanfofi, forklifts, ko kayan aiki na ciki
• Zafin defrost a aikace-aikacen freezer

Misali, ɗakin 'ya'yan itace na iya samun yawan buɗe ƙofofi da nauyin numfashin samfur. Ɗakin adana nama na iya buƙatar tsayayyen zafin jiki da danshi don kare ingancin samfur. Walk-in chiller a cikin gidan abinci na iya fuskantar ƙananan nauyi akai-akai a tsawon yini. Ɗakin freezer na iya buƙatar ƙarin kulawa ga defrost, insulation, sarrafa ƙofa, da pull-down time.

Ya kamata a zaɓi compressor bisa ga lissafin cooling load, ba kawai bisa girman ɗakin ba. Girman ɗaki yana da muhimmanci, amma nau'in samfur, zafin jikin loading, insulation, yanayin waje, da tsarin aiki na iya sauya ƙarfin da ake buƙata sosai.

Zafin evaporating

Zafin evaporating yana ɗaya daga cikin mafi muhimmancin ƙimomi a zaɓen compressor. Yawanci yana ƙasa da zafin ɗaki saboda evaporator coil dole ne ya fi iskar sanyi domin cire zafi.

Ga ɗakunan medium temperature, zafin evaporating na iya kasancewa digiri da dama ƙasa da zafin ɗakin da ake so. Ga low temperature freezers, zafin evaporating yana da ƙasa sosai kuma yana da babban tasiri ga ƙarfin compressor.

Kataloogin kwampreso ko manhajar zaɓe yawanci na lissafa ƙarfin aiki a takamaiman yanayin evaporation da condensation. Idan an rage zafin evaporation, ƙarfin kwampreso yana raguwa kuma compression ratio yana ƙaruwa. Wannan ne ya sa kwampreso da yake kama da ya isa a wani yanayi zai iya zama bai wadatar ba a ƙananan zafin evaporation.

Zafin condensation

Zafin condensation yana dogara da nau’in condenser, zafin muhalli, kwararar iska, zafin ruwa idan na’urar tana water-cooled, tsabtar condenser, da wurin shigarwa. Yanayi masu zafi ko wuraren injina marasa isasshen samun iska suna sa zafin condensation ya fi ƙaruwa.

Yayin da zafin condensation ke ƙaruwa, ƙarfin kwampreso gabaɗaya yana raguwa kuma power input yana ƙaruwa. Sakamakon shi ne ƙarin kuɗin aiki da ƙarin nauyin zafi ga na’ura. Masu saye daga ƙasashen waje ya kamata su mai da hankali sosai ga yanayin muhalli na gida. Tsarin kwampreso da aka zaɓa don yanayi mai laushi na iya kasa yin aiki da kyau a birni mai zafi a bakin teku, yankin hamada, ko shigarwa a kan rufi inda kwararar iska take da ƙuntatawa.

Lokacin neman tayin farashi ko daidaiton maye gurbi, a bayar da zafin condensation da ake tsammani ko aƙalla matsakaicin yanayin muhalli da nau’in condenser. Wannan yana taimaka wa mai samarwa ya bincika ko kwampreso zai iya aiki lafiya kuma ya samar da ƙarfin da ake buƙata.

Ƙarfin sanyaya

Ƙarfin sanyaya shi ne adadin zafin da compressor da tsarin refrigeration za su iya cirewa a ƙarƙashin ƙayyadaddun yanayi. Ana iya bayyana shi da kW, kcal/h, BTU/h, ko refrigeration tons. Naúrar ba ita ce mafi muhimmanci ba, sai dai yanayin da ke bayan ƙimar.

Misali, compressor na ɗakin sanyi da aka ba shi ƙima a wani yanayin evaporation da condensation ba za a iya kwatanta shi kai tsaye da wani compressor da aka ba shi ƙima a wasu yanayi daban ba. Masu shigarwa da masu rarrabawa ya kamata su kwatanta ƙarfin aiki a zafin evaporation iri ɗaya, zafin condensation iri ɗaya, superheat, subcooling, da refrigerant a duk lokacin da zai yiwu.

A zaɓin amfani na zahiri, ƙarfin compressor ya kamata ya rufe nauyin ɗakin da aka ƙididdige tare da rata mai ma’ana. Ƙarfin da bai isa ba yana haifar da dogon lokacin aiki da rashin ingantaccen sarrafa zafi. Wuce kima wajen girman zaɓi na iya haifar da matsalolin kunna-da-kashe akai-akai, matsalolin dawowar mai, rashin daidaiton aikin expansion valve, da raguwar sarrafa cire danshi.

Refrigerant, Nau’in Compressor, da Dacewar Tsarin

Zaɓin compressor na ɗakin sanyi yana da alaƙa sosai da zaɓin refrigerant da ƙirar tsarin. Compressor ba kayan inji ne na kowa da kowa ba. Dole ne a amince da shi don refrigerant, nau’in mai, kewayon aikace-aikace, ƙarfin lantarki, da controls da ake amfani da su a tsarin.

Dacewar refrigerant

Tsarin ɗakin sanyi na gama-gari na iya amfani da nau’o’in refrigerant daban-daban gwargwadon kasuwa, ƙa’ida, abubuwan da aka riga aka girka, da ƙirar aikin. Masu sayen na’urar maye dole ne su gano refrigerant ɗin da ake amfani da shi kafin zaɓar compressor. Sauya refrigerant ba kawai batun maye gurbin compressor ba ne; yana iya buƙatar duba mai, expansion valve, pressure controls, seals, ƙarfin condenser, safety classification, da hanyoyin cika tsarin.

Muhimman tambayoyi masu alaƙa da refrigerant sun haɗa da:

• Wane refrigerant ake amfani da shi a yanzu ko aka kayyade don aikin?
• Shin an amince da compressor ɗin don wannan refrigerant a aikin medium ko low temperature?
• Wane nau’in mai ake buƙata?
• Shin pressure ratings da safety controls sun dace?
• Shin expansion valve da sauran sassa za su dace da refrigerant ɗin?

Don aikin retrofit ko maye gurbi, hanya mafi aminci ita ce daidaita samfurin compressor ko zaɓar wani da aka amince da shi daidai gwargwadon operating envelope da buƙatun tsarin.

Reciprocating, scroll, semi-hermetic, da sauran zaɓuɓɓukan compressor

Ana amfani da nau’o’in compressor daban-daban a ɗakunan sanyi gwargwadon capacity range, matakin zafin jiki, fifikon sabis, da farashin aikin.

Ana amfani da kwampresoshin reciprocating sosai a ajiyar sanyi saboda suna samuwa a aikace-aikacen matsakaici da ƙananan zafin jiki da yawa. Sau da yawa ana zaɓarsu saboda sauƙin yi musu gyara da faɗin sassaucin aiki. Samfuran reciprocating na semi-hermetic sun zama ruwan dare a ɗakunan sanyi na kasuwanci da na salon masana'antu inda damar samun wurin gyara da ɗorewa suke da muhimmanci.

Ana yawan amfani da kwampresoshin scroll a firijin kasuwanci da aikace-aikacen walk-in chiller. Suna da ƙanƙanta kuma suna da ƙananan sassa masu motsi, amma zaɓi dole ne ya kasance cikin iyakar da aka amince da ita, musamman don amfani da ƙarancin zafin jiki. Wasu aikace-aikacen scroll na ƙarancin zafin jiki suna buƙatar injection ko wasu hanyoyin sanyaya gwargwadon ƙira.

Kwampresoshin hermetic sun zama ruwan dare a ƙananan ɗakunan sanyi da kayan aikin firiji masu zaman kansu. Suna da ƙanƙanta kuma ba su da tsada sosai, amma ba su da sauƙin yi musu gyara idan aka kwatanta da zaɓuɓɓukan semi-hermetic.

Ana iya amfani da kwampresoshin screw da manyan fakitin kwampreso na masana'antu don manyan wuraren ajiyar sanyi, tsarin tsakiya, ko ayyukan da ke da ɗakuna da yawa. Waɗannan tsarukan suna buƙatar cikakken aikin injiniya da ƙirar sarrafawa.

Mafi kyawun nau'in kwampreso ba wai kawai wanda ke da ƙarfin da ya dace ba ne. Dole ne ya dace da ikon kulawa, samuwar sassan sauyawa, tsarin sabis na gida, da bayanin yadda ake sa ran zai yi aiki.

Bukatun lantarki da sarrafawa

Kafin yin odar compressor, tabbatar da bayanan lantarki. Voltage, phase, frequency, hanyar farawa, na’urar kariya, da tsarin control panel dole su dace da wurin aiki.

Muhimman abubuwan dubawa sun haɗa da:

• Voltage da frequency na wutar lantarki a ƙasar da za a kai
• Wutar single-phase ko three-phase
• Iyakokin starting current
• Bukatun kariyar motor
• Bukatun crankcase heater
• Oil pressure controls ga nau’ikan compressor da suka dace
• Kariyar discharge temperature
• Saitunan tsaro na low pressure da high pressure

Ga ayyukan fitarwa, rashin daidaiton lantarki matsala ce ta gama gari wadda za a iya kaucewa. Compressor da aka zaɓa daidai bisa cooling capacity har yanzu na iya kasa a kasuwance idan bai dace da power supply na abokin ciniki ko control standard ba.

Misalan Aikace-aikace: Daidaita Compressor da Ainihin Cold Rooms

Ayyukan cold room sau da yawa suna kama da juna a kan zane-zane, amma bukatun compressor suna bambanta bisa ga samfur da tsarin aiki. Misalan da ke ƙasa suna nuna yadda fifikon zaɓi ke canzawa.

Cold rooms na ’ya’yan itace da kayan lambu

Adana ’ya’yan itace da kayan lambu yawanci yana cikin matsakaicin yanayin zafi. Manyan manufofi su ne daidaitaccen zafin jiki, danshi mai dacewa, da iska mai laushi. Zaɓin compressor ya kamata ya guji yin oversizing fiye da kima saboda short cycling na iya shafar daidaiton zafin jiki da sarrafa danshi.

Masu sakawa su yi la’akari da zafin numfashin samfur, yawan lodi, da buɗe ƙofofi. A wasu kasuwanni, zafin yanayi yana da yawa a lokacin girbi, don haka dole ne a duba yanayin condensing da kyau.

Dakunan adana nama sabo

Adana nama sabo yawanci aikace-aikacen sanyaya ne, amma sarrafa zafin jiki na iya kasancewa mafi tsauri fiye da adana kayan amfanin gona gaba ɗaya. Amincin samfur da ingancinsa suna dogara ne da kiyaye sarkar sanyi mai daidaito. Ƙarfin compressor ya kamata ya yi la’akari da zafin loda samfur, jadawalin sarrafawa, da yawan buɗe ƙofa.

Ga wuraren shirya nama, lodin ciki daga ma’aikata, haske, da kayan aiki na iya zama mafi girma fiye da a ɗakin adanawa mai sauƙi. Compressor ɗin adana sanyi da aka zaɓa ya kamata ya goyi bayan aiki na yau da kullum abin dogaro maimakon kawai cika ƙididdigar girman ɗaki ta suna.

Walk-in chillers

Walk-in chillers suna da yawa a gidajen abinci, otal-otal, shagunan sauƙin sayayya, manyan kantuna, da rarraba abinci. Sau da yawa suna da yawan buɗe ƙofofi da lodin da ke canzawa. Medium temperature compressors su ne na yau da kullum, amma zaɓi ya kamata ya yi la’akari da ko ana amfani da chiller ɗin don riƙe kayayyakin da aka riga aka sanyaya ko don saukar da zafin kayayyaki masu ɗumi.

Dakin ajiya yana buƙatar isasshen ƙarfi don riƙe zafin jiki a ƙarƙashin amfani na yau da kullum. Dakin pull-down yana buƙatar ƙarin ƙarfi kuma yana iya buƙatar wata hanya ta ƙira daban. Masu saye ya kamata su bayyana ainihin aikin da ake buƙata kafin kwatanta farashin compressor.

Walk-in freezers

Compressor na walk in freezer dole ne ya dace da aiki a ƙaramin zafin jiki. Zaɓin freezer ya kamata ya duba evaporating temperature, hanyar defrost, oil return, discharge temperature, da operating envelope. Compressor na iya buƙatar accessories ko controls waɗanda ba su da matuƙar muhimmanci a aikace-aikacen medium temperature.

Freezers sun fi saurin shafar zubar iska da sarrafa ƙofa. Idan dakin yana da yawan buɗe ƙofa, curtains marasa kyau, insulation mai rauni, ko taruwar frost mai yawa, compressor na iya bayyana kamar ƙarfinsa bai isa ba ko da idan lissafin farko ya kasance mai ma'ana. Cikakken ƙirar tsarin yana da muhimmanci.

Tsarin cold storage na ɗakuna da yawa

Wasu ayyuka suna haɗa ɗakuna da dama a zafin jiki daban-daban, kamar chilled preparation room, ɗakin ajiya na medium temperature, da freezer. Waɗannan tsarin na iya amfani da separate condensing units ko centralized rack system. Zaɓi dole ne ya yi la'akari da evaporating levels daban-daban da load diversity.

Ga ƙananan shigarwa, amfani da kwampreso daban-daban na iya sauƙaƙa sabis kuma ya rage tasirin juna tsakanin ɗakuna. Ga manyan ayyuka, tsarin tsakiya na iya inganta sarrafawa da inganci, amma yana buƙatar ƙarin goyon bayan injiniyanci. Masu rarrabawa da ’yan kwangila ya kamata su fayyace ra’ayin tsarin kafin su bayar da farashi ga kowanne kwampreso.

Jerin Dubawa Mai Amfani Kafin Aika Tambayar Kwampreso

Tambayar fasaha mai bayyananniya tana taimaka wa masu samarwa, masu rarrabawa, da ƙungiyoyin injiniyanci su ba da shawarar kwampreso da ya dace cikin sauri. Haka kuma tana rage haɗarin samun tayin farashi da yake kama da mai kyau amma bai dace da aikin ba.

Bayanan da za a bayar don sabon aikin ɗakin sanyi

Don sabon aiki, shirya waɗannan bayanai:

• Girman ɗaki: tsawo, faɗi, da tsayi
• Zafin ɗaki da ake buƙata
• Nau’in samfur da adadin ajiya
• Zafin samfur lokacin shigowa da lokacin saukar da zafi idan ya dace
• Adadin lodin yau da kullum da yawan buɗe ƙofa
• Kaurin rufi da nau’in panel idan an sani
• Zafin muhalli da wurin shigarwa
• Zaɓin refrigerant ko buƙatar aikin
• Wutar lantarki: ƙarfin lantarki, phase, da frequency
• Nau’in condenser: air-cooled, water-cooled, ko remote condenser
• Ƙarfin sanyaya da ake buƙata idan an riga an ƙididdige shi

Idan ba a ƙididdige nauyin sanyaya ba, a bayar da isasshen bayanin aiki domin nazarin injiniya. Ƙiyasin farashin compressor da aka dogara kawai da girman ɗaki ya kamata a ɗauke shi a matsayin ƙiyasin farko, ba zaɓi na ƙarshe ba.

Bayanan da za a bayar don zaɓin compressor na maye gurbi

Don aikin maye gurbi, bayanin da ya fi amfani shi ne nameplate na compressor ɗin da ake da shi da kuma yanayin tsarin. A bayar da:

• Alamar compressor ɗin da ake da shi da model
• Nau’in refrigerant da nau’in mai
• Aikace-aikace: chiller, freezer, ɗakin nama, ɗakin ’ya’yan itace, ko wani
• Zafin ɗaki da kusan zafin evaporating
• Model na condensing unit ko condenser idan akwai
• Wutar lantarki
• Dalilin lalacewa idan an sani
• Hotunan compressor, nameplate, da tsarin piping
• Duk wani canji da aka shirya kan refrigerant, amfani da ɗaki, ko capacity

Bai kamata a zaɓi compressor na maye gurbi ta horsepower kaɗai ba. Horsepower na compressor ba ya tabbatar da capacity iri ɗaya, dacewa da refrigerant, displacement, operating envelope, ko tsarin haɗin bututu.

Kuskuren zaɓi na gama gari da ya kamata a guje wa

Akwai kurakurai da dama da ake yawan samu a sayen compressor na ɗakin sanyi:

• Zaɓar compressor na matsakaicin zafi don aikin freezer
• Kwatanta compressors ta horsepower kawai
• Yin watsi da yanayin zafin muhalli na gida da yanayin condensing
• Zaɓar capacity ba tare da duba refrigerant ba
• Zaɓar compressor mai girma fiye da buƙata don “a kasance lafiya” ba tare da duba cycling da oil return ba
• Maye gurbin compressor da ya lalace ba tare da gano dalilin lalacewar ba
• Mantawa da buƙatun voltage, phase, da frequency don kasuwannin fitarwa
• ɗauka cewa duk walk-in freezer compressors suna iya maye gurbin juna

Mafi kyawun zaɓi yana daidaita cooling capacity, operating envelope, reliability, serviceability, da yanayin shigarwa na gida.

Abubuwan da Masu Saye da Masu Shigarwa Ya Kamata Su Kula da Su

Zaɓin cold room compressor da ya dace yana farawa ne da application temperature kuma yana ƙarewa da cikakken duba tsarin. Medium temperature compressors sun dace da chilled storage kamar fruit rooms, fresh food rooms, da walk-in chillers. Ana buƙatar low temperature refrigeration compressors don freezers da frozen storage applications inda evaporating temperature ya fi ƙasa sosai.

Muhimman ƙimomin fasaha su ne evaporating temperature, condensing temperature, refrigerant, da required cooling capacity. Girman ɗaki yana da amfani, amma bai isa shi kaɗai ba. Product load, ambient condition, door openings, insulation, da duty cycle na iya canza zaɓin.

Ga masu rarrabawa da ƙungiyoyin sabis, ingantaccen bayanan tambaya yana kaiwa ga ingantaccen daidaita compressor. Ga masu girkawa, duba cikakken tsarin yana hana matsalolin commissioning. Ga masu sayen na maye gurbi, daidaita refrigerant, kewayon aiki, ƙayyadaddun lantarki, da ƙirar tsarin yana da muhimmanci kamar samun compressor mai girman jiki makamancin haka.

Ba a zaɓar compressor na ɗakin sanyi shi kaɗai ba. Ana zaɓarsa a matsayin wani ɓangare na tsarin refrigeration wanda dole ne ya kiyaye kayayyaki lafiya, ya tabbatar da daidaiton zafin jiki, kuma ya yi aiki da aminci a ainihin muhallin abokin ciniki.