Rondedzero izere yeyakajairika firiji kuverenga kuverenga mafomula!

1. Kutendeuka kwetembiricha

Kutanga neyakanakisa yekutanga-tembiricha kutendeuka

Celsius (C) uye Fahrenheit (F)

Fahrenheit = 32 + Celsius × 1.8

Celsius = (Fahrenheit -32) /1.8

Kelvin (K) naCelsius (C)

Kelvin tembiricha (K) = madigiri Celsius (C) +273.15

02, kumanikidza kutendeuka

Mpa, Kpa, pa, bhaa

1Mpa = 1000Kpa;

1Kpa = 1000pa;

1Mpa = 10bar;

1bar = 0.1Mpa = 100Kpa;

1 mhepo yekudenga = 101.325Kpa = 1bar = 1kg;

bhaa, Kpa, PSI

1bar = 14.5psi;

1psi = 6.895Kpa;

mH2O

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

1 Pa = 0.1 mmH2O = 0.0001 mH2O

1 mH2O=104 Pa=10 kPa

03. Kutendeuka kwemhepo nekumhanya

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 (tsoka paminiti) = 0.3048 m / min = 0.00508 m / s

04. Kutonhora kugona uye simba

1 KW = 1000 W

1 KW = 861Kcal / h (kcal) = 0.39 P (kutonhora kugona)

1 W = 1 J / s (Joke / sec)

1 USTR (US inotonhora ton) = 3024Kcal / h = 3517W (kutonhora kugona)

1 BTU (yeBritish thermal unit) = 0.252kcal / h = 1055J

1 BTU / H (yeBritish thermal unit / awa) = 0.252kcal / h

1 BTU / H (yeBritish thermal unit / awa) = 0.2931W (kutonhora kugona)

1 MTU / H (chiuru cheBritish chakapisa zviyero / awa) = 0.2931KW (kutonhora kugona)

1 HP (magetsi) = 0.75KW (magetsi)

1 KW (magetsi) = 1.34HP (magetsi)

1 RT (kutonhora kugona) = 3.517KW (kutonhora kugona)

1 KW (kutonhora kugona) = 3.412MBH (103 maBritish anodziya mauniti / awa)

1 P (kutonhora kugona) = 2200kcal / h = 2.56KW

1 kcal / h = 1.163W

05, yakapusa kuverenga kuverenga

1. Sarudzo yekuwedzera vharuvhu: inotonhora ton + 1.25% margin

2. Dhinda simba: 1P = 0.735KW

3. Refrigerant muripo: kutonhora kugona (KW) ÷ 3.516 × 0.58

4. Kuyerera kwemvura kwemuchina wakatonhora nemhepo: kugona kutonhora (KW) difference tembiricha mutsauko ÷ 1.163

5.Mvura inotonhorera inoyerera yemvura-yakanyorova sikuru muchina: kutonhora kugona (KW) × 0.86 ÷ tembiricha mutsauko

6.Kutonhora kwemvura kuyerera kwemvura-yakatonhora sikuru muchina: (kutonhora kugona KW + simba remagetsi) × 0.86 ÷ tembiricha mutsauko

06. Kukora kwetambo uye kugona kutonhora

★ 1.5mm2 ndeye 12A-20A (2650 ~ 4500W)

★ 2.5mm2 ndeye 20-25A (4500 ~ 5500W)

★ 4 mm2 is 25-32A (5500~7500W)

★ 6 mm2 is 32-40A (7500~8500W)