Fujitsu M10 Series User Manual

C120-H007-08EN 51
4.4 Thermal Load and Cooling Capacities
The formula terms are:
 Flow rate: Sensible heat from the thermal load divided by the temperature
difference and the heat removed to cool a unit volume by 1C (34F).
 Thermal load: While the thermal load is a sum of sensible heat and latent heat,
sensible heat accounts for such a large proportion of the thermal load in a computer
room that the thermal load is assumed to be equal to the sensible heat.
Thermal load = Sensible heat + Latent heat Sensible heat
• 1.0 or 0.24: Specific heat of the air [kJ/(kg  C )] or [Btu/(lb  F)]
• 0.84 or 1.35:
Specific volume of the air (m
3
/kg) or (ft
3
/lb)
•24C or 75.2F: Air conditioner inlet air temperature
•11C or 52F: Approximate temperature of the air on the coil surface
of a room air conditioner
• 0.9: Approximate bypass factor of a room air conditioner
• 60: Conversion to minutes (min/h)
•18C or 64.4F: Outlet air temperature of an underfloor-ventilation air
conditioner
ow rate
Sensible heat from thermal load
Temperature difference
Specific heat/Specific vol
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Fujitsu M10 Series Specifications

General

Brand	Fujitsu
Model	M10 Series
Category	Server
Language	English