Ithebula leyunithi yokuguqulwa evamile yesiqandisi

Amayunithi avamile nokuguqulwa

1 MW = 1000 KW

1 KW=1000 W

1 KW=861Kcal/h=0.39 P

1 W= 1 J/s

0.1MPa=1kg/cm2=10mi-mercury ikholomu=100KPa

1 USTR=3024Kcal/h=3517W (冷量)

1 BTU=0.252kcal/h=1055J

1 BTU/H=0.252kcal/h

1 BTU/H=0.2931W

1 MTU/H=0.2931KW

1 HP(ugesi)=0.75KW.ugesi）

1KW.ugesi= 1.34HP (ugesi）

1 RT=3.517KW

1 KW=0.284RT=860kcal/h=3.412MBH

1 P=2200kcal/h=2.56KW

1 kcal/h=1.163W

1 W=0.86kcal/h

F=9/5℃+32

℃= (F-32) 5/9

1 CFM=1.699M³/H=0.4719 l/s

1 M³/H=0.5886CFM

1 l/s=2.119CFM

1 GPM=0.06308 l/s

1 l/s=15.85GPM

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

1 Pa=0.1mmH2O=0.0001mH2O

1 mH2O=104Pa=10kPa

(Inani elishisayo lamalahle ajwayelekile) Hc=8.14*103W.h/kg

1 MJ=0.034125kg (ejwayelekile amalahle)

1 Nm3.yemvelo igesi=1.2143kg(ejwayelekile amalahle)

Ulwazi olujwayelekile

1 kcal: 1 kg lokushisa kwamanzi akhuphuka noma awe 1 ℃ ngaphansi kwengcindezi evamile yasemkhathini, Ukushisa okumuncwa noma okukhishwe kuyikhalori engu-1.

I-1 kilogram yeqhwa ithola ama-calories angu-80

Ukushisa kwe-vaporization ye-1 kilogram yamanzi kungama-calories angu-539

4 ℃ ukuminyana kwamanzi kukhulu kakhulu

I-EER/COP/IPLV，umthamo wesiqandisi /Isilinganiso sokushisa okukhiphayo kumandla wokufaka.I-EER isho i-compressor，COP isho uhlelo，IPLV isho isilinganiso esilinganiselwe sokusebenza kahle kwamandla ngaphansi kwemithwalo ehlukene.

IPLV=2.3% * A+41.5% * B + 46.1% * C+10.1% * D (isilinganiso sesisindo)