Izinto eziphambili zobugcisa ezichaphazela ukusebenza kakuhle kwamandla

Ukuqonda ukubuyiswa kwamandla kutshintshiselwano lobushushu obujikelezayo- Izinto eziphambili zobugcisa ezichaphazela ukusebenza kakuhle kwamandla

Iinkqubo zokubuyisela ubushushu zinokwahlulwa zibe ziindidi ezimbini ezisekelwe kwiiparamitha ze-thermal zenkqubo: Iinkqubo zokubuyiswa kwamandla kunye nokuguqulwa kobushushu benkunkuma kunye neeparitha eziphezulu ze-thermal (ngaphezu kwama-70).^oC) kunye neenkqubo zokubuyiswa kwamandla kunye nokuguqulwa kobushushu benkunkuma kunye neeparamitha eziphantsi ze-thermal (ngaphantsi kwe-70^oC).

Ukubuyisela ubushushu kunye neenkqubo zokuguqula amandla ngaphezu kwe-70^oI-C isetyenziselwa kwiinkqubo zobuchwepheshe ezenzeka kumandla, ukutya, imichiza, kunye namanye amashishini asekelwe kwinkqubo apho kukhutshwa ubushushu obukhulu benkunkuma.Le nkunkuma yobushushu eneeparamitha eziphezulu ze-thermal ingasetyenziselwa ukuphucula amandla kunye nokusebenza kakuhle kwezoqoqosho kumashishini ngokufudumeza umoya ngokuthe ngqo kwiinkqubo zokungenisa umoya okanye ngokunyusa iinkqubo zobuchwepheshe ezifuna amaqondo obushushu aphezulu (umzekelo, umthombo wobushushu kwiimpompo zobushushu ezisetyenziselwa ukufakwa kwi-pasteurization kushishino lokutya; okanye ukuveliswa kombane kwi-organic Rankine Cycle okanye kwiinkqubo ze-Kalina Cycle).Ubushushu obusetyenzisiweyo obunemilinganiselo ye-thermal ephakamileyo bunokusetyenziswa kwifriji kunye neenkqubo zokupholisa umoya (umzekelo, ukuguqula amandla ashushu abe ngamanzi abandayo kusetyenziswa ukufunxa okanye ukupholisa i-adsorption chillers).

Ukubuyisela ubushushu kunye neenkqubo zokuguqula amandla ngaphantsi kwe-70^oC zidla ngokusetyenziselwa iinjongo zokufudumeza kwizakhiwo zokuhlala (umzekelo ukufudumeza umgangatho ophantsi kusetyenziswa iimpompo zobushushu) okanye izakhiwo zorhwebo (umz. kwiiyunithi zokuphatha umoya (AHU) zokufudumeza umoya “omtsha” okanye “ongaphandle” ngokufumana ubushushu “obusetyenzisiweyo”. ” okanye “ukukhupha” umoya).Eli nqaku liza kugxininisa kwizicelo zokwakha zorhwebo.

Iinkqubo zokubuyisela ubushushu kwiiyunithi zokuphatha umoya zisekelwe kwiinkqubo ezimbini ezithi, kuxhomekeke kuhlobo lwesisombululo esamkelwe kuyilo lweyunithi, lusebenzisa umbane (iinkqubo ezisebenzayo) okanye hayi (iinkqubo ze-passive).Iinkqubo ezisebenzayo zokubuyisela ubushushu kwiiyunithi zokuphatha umoya zibandakanya, umzekelo, iinkqubo ezisekelwe kwi-rotary exchange exchangers okanye iimpompo zokufudumala ezibuyiselwayo.Iinkqubo zokubuyiswa kobushushu zibandakanya ukutshintshiselana kobushushu obunqamlezayo kunye namacala amathandathu.Uphawu lokubuyisela ubushushu kwiinkqubo zokungenisa umoya kukuba ubushushu bufunyanwa kwakhona kumahluko omncinci wobushushu phakathi kobushushu obuphezulu bomsinga womoya kunye nomsinga wobushushu obusezantsi, kunye nobushushu obuphezulu bomoya obungafane ube ngaphezu kwama-30.^oC (kwizakhiwo zorhwebo, ukubuyiswa kobushushu kwenzeka nakwiqondo lokushisa eliphantsi lomoya).

Amaxesha amaninzi, ukubuyiswa kobushushu kwiiyunithi zokungenisa umoya kunye ne-air-conditioning kwenziwa kusetyenziswa i-rotary okanye i-cross-flow (i-hexagonal) yokutshintsha ubushushu, kaninzi kusetyenziswa iimpompo zokushisa.Izitshintshi zobushushu ezijikelezayo zisetyenziswa kwii-AHUs apho utshintshiselwano oluninzi phakathi kokungena kunye nokuphuma komoya kwi-AHU kuvunyelwe (ezi zidla ngokuba zizakhiwo zikawonke-wonke).Izitshintshi zobushushu ezinqamlezileyo nezinehexagonal zisetyenziswa kwiiyunithi zokuphatha umoya apho ukutshintshiselana ngobuninzi phakathi komoya omtsha kunye nosetyenzisiweyo akunakuvunyelwa (umz. izibhedlele).Iimpompo zokufudumala ezibuyiselwayo zisetyenziselwa xa umoya wokushisa ophezulu ufuneka kwiinjongo zokufudumeza.

Ubunzima kunye nokulinganisela kwamandla kutshintshiselwano lokushisa olusetyenziswa kwiiyunithi zokuphatha umoya

Xa ubala ukusebenza kwe-rotary heat exchanger ukubuyisela ubushushu kwiiyunithi zokuphatha umoya, ukongeza kwibhalansi yamandla, ibhalansi yobunzima obufanelekileyo iyafuneka.Oku kulandelayo ngama-eneji kunye ne-mass balance equations yeemeko zokuqukuqela okuzinzileyo ngolu cingelo lulandelayo.Ukutshintsha kweparamitha ngamaxesha okubangelwa yintshukumo yokujikeleza kotshintshiselwano kuqikelelwa kumlinganiselo wamandla kunye nokufuma okuqhelekileyo - oko kukuthi, utshintsho lwamaxesha ngamaxesha kwiqondo lobushushu kunye nokufuma kumphezulu wevili elijikelezayo alubalulekanga kwaye lushiyiwe kwizibalo.

a) Ubunzima, ugxininiso, kunye nokulingana kwamandla kubatshintshi bobushushu obujikelezayo: