Lubrificação de compressores frigoríficos

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A conservação de alimentos acabados e das matérias-primas para o seu fabrico é de extrema importância na indústria alimentar. É da responsabilidade do produtor manter os seus produtos nas condições adequadas para consumo e isso implica manter os produtos refrigerados de forma correcta.

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PRODUÇÃO DE FRIO +PYMHS JVMKSV¸KIRIS GSRLIGMHS GSQS Ƹgás refrigeranteƹ ³ YQ TVSHYXS UY¸QMGS VIWTSRW«ZIP TIPE TIVQYXE HI GEPSV RSW WMWXIQEW HI VIJVM KIVE±­S I GPMQEXM^E±­S *WXI GSQTSWXS TIPEW WYEW TVSTVMIHEHIW HI QYHER±E HI IWXEHS J¸ WMGS HI P¸UYMHS TEVE ZETSV I ZMGI ZIVWE ³ GE TE^ HI EFWSVZIV I VINIMXEV GEPSV EVVIJIGIRHS S EQFMIRXI HI QERIMVE GSRXVSPEHE 4 ǼYMHS RS IWXEHS KEWSWS ³ GSQTVMQMHS RS GSQTVIWWSV UYI TVSZSGE S WIY EYQIR XS HI TVIWW­S GSQ GSRWIUYIRXI EYQIRXS HI XIQTIVEXYVE 5EWWE HITSMW TSV YQ GSR HIRWEHSV SRHI VIXSVRE ES IWXEHS P¸UYMHS PMFIVXERHS GEPSV TEVE S I\XIVMSV 4 P¸UYMHS ³ VIGSPLMHS RYQ HIT¾WMXS I WIKYI WSF TVIW W­S IPIZEHE TEVE YQ IZETSVEHSV IRXVEHE HS IZETSVEHSV TSV EG±­S HI YQE Z«PZYPE HI I\TERW­S S P¸UYMHS VIHY^ E WYE TVIWW­S I GSRWIUYIRXIQIRXI E WYE XIQTIVEXYVE TVS ZSGERHS S EVVIJIGMQIRXS HE G¬QEVE I XVERW JSVQERHS WI IQ K«W E FEM\E TVIWW­S UYI ³ HI RSZS EPMQIRXEHS ES GSQTVIWWSV

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48

MANUTENÇÃO 145

Esquema de um sistema de refrigeração Válvula de I\TERW­S CONDENSADOR

1¸UYMHS E FEM\E TVIWW­S EX³ }(

EVAPORADOR

K«W E FEM\E TVIWW­S

K«W E EPXE TVIWW­S

até -100ºC

E }( COMPRESSOR CÂMARA FRIGORÍFICA 1¸UYMHS E EPXE TVIWW­S

DEPÓSITO

Figura 1. *WUYIQE HI YQ WMWXIQE HI VIJVMKIVE±­S

+EGXSVIW UYI HIXIVQMREQ E IWGSPLE HI HIXIV QMREHS ǼYMHS JVMKSV¸KIRS W­S • 8IQTIVEXYVE RIGIWW«VME HI EVVIJIGMQIRXS • 6YERXMHEHI HI GEPSV UYI XIQ UYI WIV VI QSZMHE • 8MTS HI GSQTVIWWSV YXMPM^EHS • 5VIWW­S HI K«W RIGIWW«VME • - * MRǼEQEFMPMHEHI I XS\MGMHEHI 4 XMTS HI ǼYMHS JVMKSV¸KIRS HS WMWXIQE MR ǼYIRGME HMVIGXEQIRXI S XMTS HI PYFVMǻGERXI E YXMPM^EV

TIPOS DE SISTEMA DE REFRIGERAÇÃO ȫ , ++ , + , (, - ,ȬDŽƹ *\MWXIQ HMZIVWSW XMTSW HI GSQTVIWWSVIW EHIUYEHSW TEVE E TVSHY±­S HI JVMS WI QIPLER±E HSW UYI W­S YXMPM^EHSW TEVE SYXVEW JYR±ÀIW RSVQEPQIRXI W­S GPEWWMǻGEHSW HI HYEW JSVQEW 9QE HI EGSVHS GSQ S QSHS HI HIWPSGEQIRXS ZSPYQ³XVMGS SY WINE E JSVQE HI GSQTVIWW­S HS ǼYMHS JVMKSV¸KIRIS VIWYP XERHS SW EPXIVREXMZSW UYI YXMPM^EQ ´QFSPSW IQ JYRGMSREQIRXS VIG¸TVSGS I SW VSXEXMZSW

GIRXV¸JYKSW HI TEVEJYWS I ZSPYXE 4YXVE JSVQE HIVMZE HE GSRGIT±­S GSRWXVYXMZE I HS EGGMSREQIRXS HS QSXSV TSHIRHS EWWMQ WIV LIVQ³XMGSW WIQM LIVQ³XMGSW SY EFIVXSW 4W GSQTVIWWSVIW GIRXV¸JYKSW R­S RI GIWWMXEQ HI PYFVMǻGE±­S MRXIVRE IQFSVE EW GLYQEGIMVEW HSW ZIMSW I SW EGSTPEQIRXSW HIZEQ WIV GSRZIRMIRXIQIRXI PYFVMǻGEHSW 3IWXIW GEWSW UYERHS S ¾PIS R­S IWX« IQ GSRXEGXS SY R­S GMVGYPE GSQ S VIJVMKIVERXI TSHIQ WIV YWEHSW PYFVMǻGERXIW TEVE XYVFMREW 4W TEV¬QIXVSW STIVEGMSREMW QEMW MQ TSVXERXIW HS GSQTVIWWSV W­S E GETEGMHE HI JVMKSV¸ǻGE I E TSX´RGME HI GSQTVIWW­S 4 TVMQIMVS ³ MKYEP ES TVSHYXS HS GEYHEP HI ǼYMHS TIPS ZEPSV HE IRXEPTME KERLE TSV IWWI QIWQS ǼYMHS RS IZETSVEHSV I E TSX´RGME ³ MKYEPQIRXI S TVSHYXS HS GEYHEP HI ǼYMHS QEW TIPS XVEFEPLS HI GSQTVIWW­S & GETE GMHEHI JVMKSV¸ǻGE TSHI WIV VIJIVMHE IQ YRM HEHIW HI XSRIPEHE HI VIJVMKIVE±­S 87 YQE I\TVIWW­S GSQYQQIRXI YXMPM^EHE RIWXE «VIE TEVE XVEHY^MV E IRIVKME RIGIWW«VME TEVE PMUYIJE^IV YQE XSRIPEHE HI KIPS IQ LS VEW 87 GSVVIWTSRHI ETVS\MQEHEQIRXI E O; ? A