2024 Tus sau: Elizabeth Oswald | [email protected]. Kawg hloov kho: 2024-01-13 00:07
no F (< 1) yog txhais raws li qhov kho qhov ntsuas geometric, uas thaum siv rau LMTD (Log Mean Kub Difference) ntawm lub txee ntws tawm hluav taws xob, muab qhov kub zoo sib txawv ntawm qhov Thaum tshav kub kub exchanger nyob rau hauv kev txiav txim siab.
Vim li cas peb thiaj li siv qhov kho qhov ntsuas kub hauv qhov sib hloov hluav taws xob?
Qhov kho kom raug yog ntsuas ntawm cov khoom siv hluav taws xob tawm mus los ntawm kev coj tus cwj pwm zoontawm cov khoom siv hluav taws xob hluav taws xob uas muaj qhov sib txawv ntawm qhov ntsuas kub. Qhov kho kom raug yog nyob ntawm qhov ua tau zoo ntawm qhov kub thiab qhov sib piv ntawm qhov muaj peev xwm kub rau ib qho kev khiav dej num.
Dab tsi yog qhov kho kom raug LMTD?
Vim li no qhov kev hloov kho 'F' yuav tsum tau qhia nyob rau hauv kev sib npaug ntawm cov cua sov thiab qhov sib npaug yog hloov raws li Q=UA (F) LMTD. Qhov kev hloov kho no 'F' nyob ntawm seb muaj pes tsawg lub plhaub ntawm cov khoom siv hluav taws xob thiab ntawm qhov ntsuas kub ntawm lub tshav kub exchanger.
Dab tsi yog qhov xav tau rau kev kho qhov cuam tshuam hauv lub plhaub thiab lub raj xa hluav taws xob?
Nyob rau hauv feem ntau lub plhaub thiab lub raj sib hloov cov dej ntws yuav yog sib xyaw ntawm cov khoom sib xws, ntsuas tam sim no thiab hla ntws. F kho qhov tseem ceeb nyob ntawm qhov geometry ntawm lub tshav kub exchanger thiab qhov inlet thiab qhov hluav taws xob kub ntawm cov dej kub thiab txias ntws.
Kev kho FT yog dab tsi?
A 'ft kho qhov tseem ceeb' txhais tau tias yog tus piv ntawm qhov tseeb txhais tau tiasqhov sib txawv ntawm qhov kub thiab txias rau qhov ntsuas qhov ntsuas qhov sib txawv(saib Eq(2)). Qhov 'ft kho qhov tseem ceeb' tus nqi yuav tsum siab dua 0.75 rau lub tshuab hluav taws xob sib hloov kom ua tau.
Pom zoo:
Vim li cas txoj kev tseem ceeb tseem ceeb rau kev tswj xyuas qhov project?
txoj kev tseem ceeb tso cai rau pab pawg txheeb xyuas cov haujlwm tseem ceeb tshaj plaws hauv qhov project. … Qhov no muab kev nkag siab ntau dua rau koj qhov project ncua sij hawm thiab kev sib raug zoo ntawm cov haujlwm, ua rau koj nkag siab ntau ntxiv txog lub sijhawm ua haujlwm twg koj tuaj yeem hloov kho, thiab qhov twg yuav tsum nyob ib yam.
Rau inducing emf nyob rau hauv ib lub kauj qhov tseem ceeb yuav tsum tau?
Qhov kev xav tau yooj yim rau induce emf hauv lub kauj yog tus nqi ntawm cov hlau nplaum txuas nrog lub kauj yuav tsum hloov. Yuav ua li cas thiaj tsim tau emf? Tus induced emf tuaj yeem tsim los ntawm kev hloov pauv: (i) magnetic induction (B), (ii) thaj chaw uas nyob ze ntawm lub kauj (A) thiab.
Vim li cas qhov kev xav tau siab yog qhov tseem ceeb kho qhov muag?
Lub taub hau, lub teeb ntawm lub teeb ci - qhov tseem ceeb yog qhov muaj kev cuam tshuam siab rau tiv thaiv lub teeb poob- tshwj xeeb tshaj yog spectral angular / angular hemispherical reflectivity. Qhov tseem ceeb ntawm cov khoom kho qhov muag yog dab tsi?
Dab tsi yog qhov tseem ceeb thiab vim li cas nws tseem ceeb los txheeb xyuas koj qhov tseem ceeb?
Qhov tseem ceeb yuav coj koj hauv kev txiav txim siab hauv lub neej thiab ua rau koj taug qab. Qhov tseem ceeb tshaj plaws, qhov tseem ceeb tshaj plaws yuav ua rau koj ntseeg siab hais tias "tsis yog." Lawv pab koj txheeb xyuas qhov xav tau tiag tiag hauv koj lub neej, piv rau lwm tus xav tias tseem ceeb.
Vim li cas qhov tseem ceeb ntawm qhov muaj zog thiab qhov tsis muaj zog yog qhov tseem ceeb?
Nws yog ib qho tseem ceeb rau qhov tseem ceeb ntawm qhov ua tau zoo thiab qhov tsis muaj zog vim qhov no pab lub tuam txhab txiav txim siab txog thaj chaw uas lawv yuav tsum tau txhim kho ntxiv rau thaj chaw uas lawv ua tau zoo hauv. Vim li cas lub zog thiab qhov tsis muaj zog tseem ceeb?
