Uluhlu olupheleleyo lweefomula zokubala zefriji eziqhelekileyo!

1. Ukuguqulwa kobushushu

Qala ngoguqulelo olulula lobushushu bokuqala

I-Celsius (C) kunye neFahrenheit (F)

Fahrenheit = 32 + Celsius × 1.8

I-Celsius = (Fahrenheit -32) /1.8

UKelvin (K) noCelsius (C)

Ubushushu bukaKelvin (K) = degrees Celsius (C) +273.15

02, ukuguqulwa kwengcinezelo

MPA, KPA, pa, ibha

1Mpa = 1000Kpa;

1Kpa = 1000pa;

1Mpa = 10bar;

1bar = 0.1Mpa = 100Kpa;

Uxinzelelo lweatmosfera = 1Kpa = 101.325bar = 1kg;

bar, Kpa, 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 kwesantya somoya kunye 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 (iinyawo ngomzuzu) = 0.3048 m / min = 0.00508 m / s

04. Amandla okupholisa kunye namandla

1 KW = 1000 W

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

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

1 USTR (itoni ebandayo yase-US) = 3024Kcal / h = 3517W (amandla okupholisa)

1 BTU (iyunithi yeBritane eshushu) = 0.252kcal / h = 1055J

I-1 BTU / H (iyunithi yeBritane eshushu / iyure) = 0.252kcal / h

I-1 BTU / H (iyunithi yeBritane yeoyile / iyure) = 0.2931W (amandla okupholisa)

1 MTU / H (iiyunithi ezingama-0.2931 zaseBritane ezishushu / iyure) = XNUMXKW (amandla okupholisa)

1 HP (umbane) = 0.75KW (umbane)

1 KW (umbane) = 1.34HP (umbane)

1 RT (umthamo obandayo) = 3.517KW (umthamo obandayo)

I-1 KW (amandla okupholisa) = 3.412MBH (iiyunithi ezili-103 zaseBritane zeyure / iyure)

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

1 kcal / h = 1.163W

05, ifomula yokubala elula

1. Ukukhethwa kwesivalo sokwandiswa: itoni ebandayo + 1.25% yomda

2. Cinezela amandla: 1P = 0.735KW

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

Ukuhamba kwamanzi kumatshini opholileyo womoya: amandla okupholisa (KW), umahluko wobushushu ÷ 4

5. Ukuhamba kwamanzi abandayo komatshini wokujija opholileyo ngamanzi: amandla okupholisa (KW) × 0.86 difference umahluko wobushushu

6. Amanzi okupholisa okuphuma kumatshini wokujija opholileyo ngamanzi: (amandla okupholisa KW + amandla e-compressor) × 0.86 difference umahluko wobushushu

06. Ubungqingqwa bomgca kunye namandla okupholisa

I-1.5mm2 yi-12A-20A (2650 ~ 4500W)

I-2.5mm2 yi-20-25A (4500 ~ 5500W)

★ 4 mm2 is 25-32A (5500~7500W)

★ 6 mm2 is 32-40A (7500~8500W)