Qhov txawv ntawm BTU thiab Watts

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Qhov txawv ntawm BTU thiab Watts
Qhov txawv ntawm BTU thiab Watts

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Video: Qhov txawv ntawm BTU thiab Watts
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Qhov Tseem Ceeb - BTU vs Watts

Nws yog thawj qhov tseem ceeb los txheeb xyuas cov ntsiab lus ntawm lub zog thiab lub zog kom nkag siab qhov txawv ntawm BTU thiab Watts. Yog tias ib qho khoom ua haujlwm, qhov khoom tau muab ntau lub zog los ua haujlwm. Yog tias muaj cua sov hloov ntawm lossis mus rau ib qho khoom, tus nqi ntawm lub zog raug tshem tawm los yog muab rau cov khoom hais. Tus nqi ntawm kev ua hauj lwm ua los yog tus nqi ntawm lub tshav kub hloov yog txhais raws li lub hwj chim. BTU thiab Watt yog ob hom kev ntsuas sib txawv los ntsuas qhov hloov pauv ntawm lub zog thiab lub zog, feem. Yog li, qhov sib txawv tseem ceeb ntawm BTU thiab Watts yog tias BTU ntsuas lub zog, uas yog ib qho khoom ntiag tug ntawm lub cev thaum Watts ntsuas qhov hloov pauv ntawm lub zog uas ib txwm cuam tshuam nrog lub sijhawm.

BTU yog dab tsi?

BTU yog daim ntawv luv rau British Thermal Unit. Lub sij hawm thermal feem ntau yog siv los ntsuas thermal zog los yog lub zog nyob rau hauv daim ntawv ntawm tshav kub. BTU tsis yog ib feem ntawm International System of Units lossis SI units. Tab sis nws feem ntau siv los ntsuas hauv kev lag luam cua sov thiab cua txias txawm tias tam sim no.

Ib BTU txhais tau tias yog cov cua sov uas yuav tsum tau xa mus rau ib phaus (lb) dej kom nce nws qhov kub thiab txias los ntawm ib qib Fahrenheit (F). Txij li thaum lb thiab F yog ob qho tib si cov qauv, BTU tuaj yeem txheeb xyuas los ntawm nws cov SI units 'tus khub, Joule (J). Ntawd yog, ib qho joule yog qhov kub uas yuav tsum tau hloov mus rau ib gram dej kom nce qhov kub ntawm ib degree Celsius (C). Ib BTU yuav muab 1055 J.

Vim tias BTUs feem ntau siv rau hauv cua sov thiab cua txias, cua sov, cua thiab cua txias tshuab siv BTU rau kev ntsuas lub zog. Txawm li cas los xij, nws yog ib qho tseem ceeb uas yuav tsum nco ntsoov tias nyob rau hauv cov nqe lus ntawm lub hwj chim, uas yog tus nqi ntawm lub tshav kub hloov mus rau hauv lub chav tsev yuav tsum tau nthuav tawm raws li BTUs ib teev. Tab sis nyob rau hauv feem ntau daim ntawv thov, qhov no yog misinterpreted li BTU nws tus kheej. Tus nqi hloov pauv (hs) ntawm qhov ntsuas kub zoo, uas ntxiv rau lossis tshem tawm ntawm ib qho khoom los ua kom nws qhov kub thiab txias yog xam raws li hauv qab no hauv BTU / hr:

Hs=1.08 q dt.

Ntawm no, q yog qhov ntim ntawm huab cua hauv cubic feet ntawm ib feeb kom hloov qhov kub thiab txias los ntawm dt F. Lub koom haum muab ntawv pov thawj, Energy Star pom zoo tias thaum xaiv lub tshuab cua txias, nws yog txoj cai ntawm tus ntiv tes xoo siv. 20 BTU / hr rau txhua square feet. Lawv kuj pom zoo tias yog tias tus naj npawb ntawm cov neeg siv niaj hnub siv chav tsev ntau dua 2, BTU / nws yuav tsum tau nce 600 BTU / hr rau txhua tus neeg ntxiv. Lub hwj chim yuav tsum tau nce los yog txo los ntawm 10% yog tias chav tsev ci ntsa iab los yog ntxoov ntxoo raws li.

Qhov txawv tseem ceeb - BTU vs Watts
Qhov txawv tseem ceeb - BTU vs Watts
Qhov txawv tseem ceeb - BTU vs Watts
Qhov txawv tseem ceeb - BTU vs Watts

Daim duab 01: BTU feem ntau siv hauv cov tshuab cua txias.

Watt yog dab tsi?

Watt yog SI unit rau ntsuas lub zog. Qhov kev ntsuas no muaj npe tom qab tus neeg tsim khoom ntawm lub tshuab hluav taws xob, James Watt. 1 Watt yog sib npaug rau 1 Joule ib ob. Nyob rau hauv daim ntawv ntawm chav tsev British, Ib Watt yog sib npaug li ntawm 3.412 BTU / hr. Txawm hais tias lub zog ntawm lub tshuab cua sov lossis cua txias yog sawv cev hauv BTUs lossis BTU / hr, lub zog hluav taws xob nkag rau lub kaw lus yuav tsum tau muab hauv Watts. Piv txwv li, 24000 BTU / hr cua txias system yuav haus 2400 W nyob ntawm EER- Energy efficiency piv (kub hloov mus rau hluav taws xob fais fab). Yog li, EER ntawm no yog 10. (24000/2400).

Nyob rau hauv cov nqe lus ntawm SI units, qhov paub qhov kub ntawm qhov hloov pauv (hs) rau kev hloov pauv ntawm qhov ntsuas kub tuaj yeem xam raws li hauv qab no hauv kW:

Hs=Cpp q dt

Ntawm no, Cp yog cov cua kub tshwj xeeb (1.006 kJ/kgᵒC); ρ yog qhov ceev ntawm huab cua (1.202 kg/m3); q yog huab cua ntim ntws (m3/s), thiab dt yog qhov kub thiab txias sib txawv hauv Celsius.

Apart from thermal applications, Watt yog siv rau ntau qhov xwm txheej xws li hauv hluav taws xob, lub teeb, suab thiab xov tooj cua kis tau tus mob, hnub ci zog, thiab lwm yam. Piv txwv li, hauv kev tsim hluav taws xob, lub peev xwm ntawm lub tshuab hluav taws xob tau muab rau hauv kiloWatts los yog GigaWatts. Ntxiv rau lub zog, kev siv hluav taws xob hluav taws xob kuj raug xa mus rau hauv kWh; uas yog, lub zog hluav taws xob siv los ntawm 1 kW ntaus ntawv hauv ib teev. Ntxiv mus, qhov kwv yees lub hnub ci hluav taws xob tawm tsam lub ntiaj teb huab cua yog muab raws li 174 PetaWatts (PW).

Qhov sib txawv ntawm BTU thiab Watts
Qhov sib txawv ntawm BTU thiab Watts
Qhov sib txawv ntawm BTU thiab Watts
Qhov sib txawv ntawm BTU thiab Watts

Daim duab 02: Wattmeter

Dab tsi yog qhov txawv ntawm BTU thiab Watts?

BTU vs Watts

BTUs (British Thermal Unit) ntsuas lub zog, tshwj xeeb tshaj yog thermal hloov hluav taws xob lossis cua sov. Watt ntsuas tus nqi ntawm lub zog hloov pauv, uas yog, Joules ib feeb. Watt ib txwm cuam tshuam nrog lub sijhawm.
Types of Unit Systems
BTU yog ib feem ntawm British Imperial System of Units. Nws tseem suav hais tias yog chav tsev classical. Watt yog tus qauv ntawm lub zog, txhais ua ib feem ntawm SI unit system.
Definition in terms of tshav kub hloov
BTU yog txhais nrog cov chav tsev classical raws li lub zog thermal hloov ntawm lossis mus rau ib phaus dej los hloov nws qhov kub ntawm ib degree Fahrenheit. Ib Watt ntawm cov cua sov hloov pauv tau txhais tau tias yog tus nqi ntawm cov cua sov hloov hauv ib pliag kom nce qhov kub ntawm ib gram ntawm cov dej los ntawm ib degree Celsius.

Summary – BTU vs Watts

BTU thiab Watt yog ob qhov ntsuas ntsuas tau txhais los ntawm British Imperial System of Units thiab International System of Units, feem. Thaum BTU ntsuas tus nqi ntawm lub zog, Watt ntsuas lub zog hloov pauv. Qhov no yog qhov txawv ntawm BTU thiab Watts. BTU feem ntau yog siv rau thermal zog lossis hluav taws xob hloov hluav taws xob (BTU / hr). Tab sis Watt yog dav siv nyob rau hauv ntau lwm yam kev siv xws li hluav taws xob, lub teeb xov tooj cua zaus, thiab lwm yam. SI unit counterpart ntawm BTU yog Joule los yog Ws (Watt-thib ob) thiab kuv BTU yog sib npaug rau 1055 Joules kwv yees li.

Download PDF Version of BTU vs Watts

Koj tuaj yeem rub tawm PDF version ntawm kab lus no thiab siv nws rau offline hom phiaj raws li cov ntawv sau tseg. Thov download PDF version ntawm no Qhov txawv Ntawm BTU thiab Watts.

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