Uhlu oluphelele lwamafomula wokubala wefriji ajwayelekile!

1. Ukuguqulwa kwezinga lokushisa

Qala ngokuguqula okushisa okulula okulula

I-Celsius (C) ne-Fahrenheit (F)

I-Fahrenheit = 32 + Celsius × 1.8

ICelsius = (Fahrenheit -32) /1.8

UKelvin (K) noCelsius (C)

Ukushisa kukaKelvin (K) = degrees Celsius (C) +273.15

02, ukuguqulwa kwengcindezi

Mpa, Kpa, pa, ibha

1Mpa = 1000Kpa;

1Kpa = 1000pa;

1Mpa = 10bar;

1bar = 0.1Mpa = 100Kpa;

1 ingcindezi yomkhathi = 101.325Kpa = 1bar = 1kg;

ibha, i-Kpa, i-PSI

1bar = 14.5psi;

1psi = 6.895Kpa;

mH2O

1 kg / cm2 = 105 = 10 mH2O = 1 ibha = 0.1 MPa

1 Pa = 0.1 mmH2O = 0.0001 mH2O

1 mH2O = 104 Pa = 10 kPa

03. Ukuguqulwa kwejubane lomoya nevolumu

1 CFM (cubic feet per minute)=1.699 M³/H=0.4719 l/s

1 M³/H=0.5886CFM (cubic feet/minute)

1 l/s=2.119CFM (cubic feet per minute)

1 fpm (izinyawo ngomzuzu) = 0.3048 m / min = 0.00508 m / s

04. Amandla okupholisa namandla

1 KW = 1000 W

1 KW = 861Kcal / h (kcal) = 0.39 P (amandla okupholisa)

1 W = 1 J / s (Ihlaya / isekhondi)

1 USTR (ithani elibandayo lase-US) = 3024Kcal / h = 3517W (amandla okupholisa)

1 BTU (iyunithi yokushisa yaseBrithani) = 0.252kcal / h = 1055J

1 BTU / H (iyunithi yokushisa yaseBrithani / ihora) = 0.252kcal / h

1 BTU / H (iyunithi yokushisa yaseBrithani / ihora) = 0.2931W (amandla okupholisa)

1 MTU / H (amayunithi ayizinkulungwane ashisayo aseBrithani / ihora) = 0.2931KW (amandla okupholisa)

1 HP (ugesi) = 0.75KW (ugesi)

1 KW (ugesi) = 1.34HP (ugesi)

1 RT (amandla abandayo) = 3.517KW (amandla abandayo)

1 KW (umthamo wokupholisa) = 3.412MBH (amayunithi wehora ayi-103 aseBrithani / ihora)

1 P (amandla okupholisa) = 2200kcal / h = 2.56KW

1 kcal / h = 1.163W

05, ifomula elula yokubala

1. Ukukhethwa kwe-valve yokwandisa: ithani elibandayo + i-1.25% margin

2. Cindezela amandla: 1P = 0.735KW

3.Isiqandisi: amandla okupholisa (KW) ÷ 3.516 × 0.58

4.Ukugeleza kwamanzi komshini opholile emoyeni: umthamo wokupholisa (KW), umehluko wezinga lokushisa ÷ 1.163

5.Ukugeleza kwamanzi abandayo komshini wesikulufa opholile ngamanzi: umthamo wokupholisa (KW) × 0.86 difference umehluko wokushisa

6.Ukugeleza kwamanzi okupholile komshini opholile wamanzi: (amandla okupholisa amandla we-KW + amandla we-compressor) × 0.86 difference umehluko wezinga lokushisa

06. Ukujiya kolayini namandla okupholisa

★ 1.5mm2 ngu-12A-20A (2650 ~ 4500W)

★ 2.5mm2 ingama-20-25A (4500 ~ 5500W)

★ 4 mm2 is 25-32A (5500~7500W)

★ 6 mm2 is 32-40A (7500~8500W)