Ilana Iṣiro HVAC

I, iwọn otutu:

Celsius (C) ati Fahrenheit (F)

Fahrenheit = 32 + Celsius × 1.8

Celsius = (Fahrenheit -32) / 1.8

Kelvin (K) ati Celsius (C)

Kelvin (K) = Celsius (C) +273,15

II, Iyipada titẹ:

Mpa,Kpa,pa,bar

1Mpa=1000Kpa;

1Kpa = 1000pa;

1Mpa=10bar;

1bar=0.1Mpa=100Kpa;

1 atmospher=101.325Kpa=1bar=1Kilogram;

1bar=14.5psi;

1psi=6.895Kpa;

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

1 Pa = 0,1 mmH2O = 0.0001 mH2O

1 mH2O = 104 Pa = 10 kPa

III, Iyara afẹfẹ, iyipada iwọn didun

1CFM = 1.699 M³/H = 0.4719 l/s

1M³/H = 0.5886CFM

1l/s=2.119CFM

1FPM = 0.3048 m / min = 0.00508 m / s

IV, Agbara itutu ati agbara:

1KW=1000 W

1KW = 861Kcal / h = 0.39 P (agbara itutu agbaiye)

1W= 1 J/s

1USTR = 3024Kcal / h = 3517W (agbara itutu agbaiye)

1BTU = 0.252kcal / h = 1055J

1BTU/H=0.252kcal/h

1BTU/H = 0.2931W (agbara itutu agbaiye)

1MTU/H = 0.2931KW (agbara itutu agbaiye)

1HP (itanna) = 0.75KW (itanna)

1KW (itanna) = 1.34HP (itanna)

1RT (agbara itutu agbaiye) = 3.517KW (agbara itutu agbaiye)

1KW (agbara itutu agbaiye)= 3.412MBH

1P (agbara itutu agbaiye)= 2200kcal / h = 2.56KW

1kcal/h=1.163W

V,Imuletutusisanra fifi sori ẹrọ ati agbara itutu agbaiye:

1.5mm2=12A-20A (2650~4500W) 1P ~ 2P

2.5mm2=20-25A（4500~5500W） 2P

4mm2=25-32A(5500~7500W) 2P~3P

6mm2=32-40A（7500~8500W） 3P~4P

VI, agbekalẹ iṣiro firiji:

1, Asayan ti imugboroosi àtọwọdá: tutu pupọ + 1.25% alawansi

2, Agbara titẹ: 1P = 0.735kW

3, Idiyele firiji: Agbara itutu (KW) ÷3.516 x 0.58

4, Omi sisan ti air kula: Itutu agbara (KW) ÷ otutu iyato ÷1.163

5, Itutu omi sisan oṣuwọn ti omi-tutu dabaru ẹrọ: Itutu agbara (KW) ×0.86÷ otutu iyato

6, Itutu omi sisan oṣuwọn ti omi-tutu dabaru ẹrọitutu agbaiye KW+ titẹ agbara) ×0.86÷ iyatọ otutu

7, Gross alapapo iye QT=QS+QL

8, Itutu afẹfẹ: QT = 0.24 * ∝ * L * (h1-h2)

9, Itutu afẹfẹ ooru pataki: QS = Cp * ∝ * L * (T1-T2)

10, Ooru ibalẹ ti itutu afẹfẹ: QL=600*∝*L*(W1-W2)

11,Omi didiiwọn didun:L/sV1= Q1/(4.187△T1)

12, Itutu omi iwọn didun: L/sV2=Q2/(4.187△T2)=(3.516+KW/TR)TR，Q2=Q1+N=TR*3.516+KW/TR*TR=(3.516+KW/TR）) *TR

13, Ifilọlẹ ṣiṣe: EER = Agbara agbara (Mbtu / h) / agbara agbara (KW);COP= Agbara itutu (KW)/agbara agbara (KW)

14, Iṣẹ fifuye itutu agbaiye: NPLV=1/(0.01/A+0.42/B+0.45/C+0.12/D)

15, Ẹru kikun lọwọlọwọ (apakan mẹta)

16, Iwọn afẹfẹ titun: Lo = nV

17, Afẹfẹipese iwọn didun: L=Qs/〔Cp*∝*(T1-T2)〕

18, Agbara afẹfẹ: N1=L1*H1/(102*n1*n2)

19, Agbara fifa omi: N2 = L2 * H2 * r / (102 * n3 * n4)

20, Iwọn ila opin paipu: D=√4*1000L2/(π*v)

21, Agbegbe ibudo: F=a*b*L1/(1000u)