Ndepụta zuru ezu nke usoro ịgbakọ friji nkịtị!

1. Ntughari nke okpomọkụ

Malite na ntụgharị ntụgharị ihu igwe kachasị mfe

Celsius (C) na Fahrenheit (F)

Fahrenheit = 32 + Celsius × 1.8

Celsius = (Fahrenheit -32)/1.8

Kelvin (K) na Celsius (C)

Kelvin temperature (K) = degrees Celsius (C) +273.15

02, ntụgharị ntụgharị

Mpa, Kpa, pa, bar

1Mpa=1000Kpa;

1Kpa = 1000pa;

1Mpa = 10bar;

1bar = 0.1Mpa = 100Kpa;

1 atmospheric pressure=101.325Kpa=1bar=1kg;

mmanya, Kpa, PSI

1bar=14.5psi;

1psi = 6.895Kpa;

mH2O

1 n’arọ/cm2 = 105 = 10 mH2O = 1 mmanya = 0.1 MPa

1 Pa = 0.1 mmH2O = 0.0001 mH2O

1 mH2O=104 Pa=10 kPa

03. Mgbanwe nke ọsọ ifufe na olu

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 (ụkwụ kwa nkeji) = 0.3048 m/min = 0.00508 m/s

04. Ike jụrụ oyi na ike

1 KW = 1000 W

1 KW = 861Kcal/h (kcal) = 0.39 P (ike jụrụ oyi)

1 W = 1 J/s (egwuregwu)

1 USTR (ton oyi US) = 3024Kcal/h = 3517W (ikike jụrụ oyi)

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

1 BTU/H (otu ọkụ/elekere ọkụ nke Britain) = 0.252kcal/h

1 BTU/H (British thermal unit/hour) = 0.2931W (ike jụrụ oyi)

1 MTU/H (puku nkeji ọkụ/elekere Britain) = 0.2931KW (ike jụrụ oyi)

1 HP (ọkụ eletrik) = 0.75KW (ọkụ eletrik)

1 KW (ọkụ eletrik) = 1.34HP (ọkụ eletrik)

1 RT (cold capacity)=3.517KW (cold capacity)

1 KW (ikike jụrụ oyi) = 3.412MBH (103 nkeji ọkụ/elekere Britain)

1 P (ikike jụrụ oyi) = 2200kcal/h = 2.56KW

1 kcal/h = 1.163W

05, usoro mgbako dị mfe

1. Nhọrọ nke valvụ mgbasa: ton oyi + oke 1.25%

2. Ike pịa: 1P = 0.735KW

3. Ụgwọ friji: ike jụrụ oyi (KW) ÷ 3.516 × 0.58

4. Nrugharị mmiri nke igwe jụrụ oyi: ikike jụrụ oyi (KW) difference ọdịiche okpomọkụ ÷ 1.163

5. Mmiri jụrụ oyi nke igwe jụrụ oyi nke igwe: ike jụrụ oyi (KW) × 0.86 ÷ ọdịiche okpomọkụ

6. Igwe na-eme ka mmiri jụrụ oyi nke igwe ịghasa mmiri: (ike jụrụ oyi KW + ike compressor) × 0.86 ÷ ọdịiche okpomọkụ

06. Oke ọkpụrụkpụ na ike jụrụ oyi

★ 1.5mm2 bụ 12A-20A (2650 ~ 4500W)

★ 2.5mm2 bụ 20-25A (4500 ~ 5500W)

★ 4 mm2 is 25-32A (5500~7500W)

★ 6 mm2 is 32-40A (7500~8500W)