- 09
- Oct
Lenane le felletseng la litlatsetso tse tloaelehileng tsa lipalo tsa sehatsetsi!
Lenane le felletseng la litlatsetso tse tloaelehileng tsa lipalo tsa sehatsetsi!
1. Phetoho ea mocheso
Qala ka phetoho e bonolo ka ho fetisisa ea mocheso oa pele
Celsius (C) le Fahrenheit (F)
Fahrenheit = 32 + Celsius × 1.8
Celsius = (Fahrenheit -32) /1.8
Kelvin (K) le Celsius (C)
Mocheso oa Kelvin (K) = degrees Celsius (C) +273.15
02, khatello ea phetoho
Mpa, Kpa, pa, bareng
1Mpa = 1000Kpa;
1Kpa = 1000pa;
1Mpa = 10bar;
1bar = 0.1Mpa = 100Kpa;
1 khatello ea sepakapaka = 101.325Kpa = 1bar = 1kg;
bareng, Kpa, PSI
1bar=14.5psi;
1psi = 6.895Kpa;
mH2O
1 kg / cm2 = 105 = 10 mH2O = 1 bar = 0.1 MPa
1 Pa = 0.1 mmH2O = 0.0001 mH2O
1 mH2O=104 Pa=10 kPa
03. Phetoho ea lebelo la moea le bophahamo ba modumo
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 (maoto ka motsotso) = 0.3048 m / min = 0.00508 m / s
04. Bokhoni ba ho pholisa le matla
1 KW = 1000 W
1 KW = 861Kcal / h (kcal) = 0.39 P (matla a pholileng)
1 W = 1 J / s (Joke / sec)
1 USTR (tonne e batang ea Amerika) = 3024Kcal / h = 3517W (matla a pholileng)
1 BTU (yuniti e futhumatsang ea Borithane) = 0.252kcal / h = 1055J
1 BTU / H (mochini oa mocheso oa Borithane / hora) = 0.252kcal / h
1 BTU / H (mochini oa mocheso oa Borithane / hora) = 0.2931W (matla a ho futhumatsa)
1 MTU / H (likete tse sekete tsa mocheso oa Borithane / hora) = 0.2931KW (matla a ho futhumatsa)
1 HP (motlakase) = 0.75KW (motlakase)
1 KW (motlakase) = 1.34HP (motlakase)
1 RT (cold capacity)=3.517KW (cold capacity)
1 KW (matla a pholileng) = 3.412MBH (likarolo tse 103 tsa mocheso oa Brithani / hora)
1 P (matla a pholileng) = 2200kcal / h = 2.56KW
1 kcal / h = 1.163W
05, mokhoa o bonolo oa ho bala
1. Khetho ea valve ea ho atolosa: ton e batang + 1.25% margin
2. Tobetsa matla: 1P = 0.735KW
3.Qoso ea sehatsetsi: matla a pholileng (KW) ÷ 3.516 × 0.58
4. Phallo ea metsi ea mochini o pholileng moeeng: matla a pholileng (KW), phapang ea mocheso ÷ 1.163
5. Phallo ea metsi a batang ea mochini o pholileng oa metsi: matla a pholileng (KW) × 0.86 difference phapang ea mocheso
6. Phallo ea metsi a pholileng ea mochini o pholileng oa metsi: (matla a pholileng KW + matla a konpresser) × 0.86 difference phapang ea mocheso
06. Botenya ba mohala le matla a pholileng
★ 1.5mm2 ke 12A-20A (2650 ~ 4500W)
★ 2.5mm2 ke 20-25A (4500 ~ 5500W)
★ 4 mm2 is 25-32A (5500~7500W)
★ 6 mm2 is 32-40A (7500~8500W)