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1.3.2 Pump Performance
Picture 1-1
:
Pump Performance
1.3.3 Reference Formula of Mould Controllers Model Selection
Heater Power (kW) = mould weight (kg)
×
mould specific heat (kcal/kg
)
×
℃
temperature difference between mould and environment (
)
×
safety coefficient
℃
/ heating duration / 860
Note: safety coefficient can select a value from 1.3 to 1.5.
Flow Rate (L/min) = heater power (kw)
×
860 / [heating medium specific
(kcal/kg
)
×
heating medium density (kg/L)
×
in/outlet temperature di
℃
fference
(
)
×
time (60)]
℃
Note: Water specific heat =1kcal/kg
℃
Heating medium oil specific heat =0.49kcal/kg
℃
Water density =1kg/L
Heating medium oil density =0.842kg/L
Summary of Contents for STM-1220-PW
Page 1: ...STM PW Series Hi Temp Water Heater Date Dec 2014 Version Ver B English ...
Page 2: ......
Page 25: ...25 65 2 3 2 Control Circuit STM PW 400V Picture 2 6 Control Circuit STM PW 400V ...
Page 29: ...29 65 2 3 5 Main Circuit STM PW 230V Picture 2 8 Main Circuit STM PW 230V ...
Page 30: ...30 65 2 3 6 Control Circuit STM PW 230V Picture 2 9 Control Circuit STM PW 230V ...
Page 62: ...62 65 ...