Common units and conversion
1 MW = 1000 KW
1 KW=1000 W
1 KW=861Kcal/h=0.39 P
1 W= 1 J/s
0.1MPa=1kg/cm2=10m mercury column =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(electricity)=0.75KW（electricity）
1 KW（electricity）=1.34HP（electricity）
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
(Thermal value of standard coal) Hc=8.14*103W.h/kg
1 MJ=0.034125kg (standard coal)
1 Nm3（natural gas）=1.2143kg(standard coal)
Common knowledge
1 kcal：1 kg of water temperature rise or fall 1 ℃ under normal atmospheric pressure,The heat absorbed or released is 1 calorie.
1 kilogram of ice gets 80 calories
The heat of vaporization of 1 kilogram of water is 539 calories
4 ℃ water density is the largest
EER/COP/IPLV，refrigerating capacity /Ratio of heat output to input power.EER means compressor，COP means system，IPLV means weighted average of energy efficiency under different loads.
IPLV=2.3% * A+41.5% * B + 46.1% * C+10.1% * D （weighted average）
Post time: Dec-14-2018
