Wok bilong kamapim wanpela 'exhaust hood'

Divelopmen-paten bilong wanpela 'exhaust hood' long seip bilong wanpela 'truncated pyramid'

X - Bikpela bilong as bilong daunbilo.
Y - Hait bilong piramid.
F - Longpela bilong as antap.
E - Width bilong top beis.
G - Longpela bilong sait pes bilong piramid. Apofema.
U - Angle bilong inklinesen bilong piramid.

Ol rot bilong baim long intanet.

Kalkuleta i larim yu long kalkuletim ol paramita bilong wanpela 'tetrahedral truncated pyramid' wantaim wanpela 'rectangular base'. Dispela em i gutpela long skelim ol 'exhaust hood' bilong 'ventilation', wanpela 'hood' bilong haus kuk o 'barbecue', o wanpela 'hood' bilong wanpela 'chimney pipe'.

Hau long yusim kalkulesen.

Yu mas makim ol sais we bai yu yusim long mekim kalkulesen. Givim ol sais na angle bilong piramid yu save long en. Klikim 'Calculate' baten. Olsem risal bilong kalkulesen, ol droing bilong 'cap pattern' i kamap.
Ol droing i soim ol sais bilong ol wanwan hap bilong paten bilong wanpela 'truncated pyramid'.
Ol droing tu i save kamap: lukluk long fran na lukluk long sait.

Sapos sais bilong E i wankain olsem sais bilong F, orait bai i gat wanpela 'regular truncated pyramid'.
Sapos ol 'dimensions' em E=0 na F=0, orait bai i gat wanpela 'regular pyramid'.

Olsem risal bilong kalkulesen, yu ken painimaut:

Sapos ol i no save long 'angle of inclination' bilong 'pyramid'.
Katim ol angle long divelopmen.
Eria bilong antap na olgeta sait pes.
Pes bilong as bilong daunbilo.
Volium bilong piramid.
Wokpis pepa dimensen.

Atensen. Noken lusim tingting long putim ol 'allowances' bilong ol 'fold' bilong konektim ol hap bilong 'hood'.