Specific Power Consumption
Specific power consumption is the ratio of the power
consumed by an engine to a certain force such as the amount of output the engine
(equipment) produces. It allows engines (equipments) of all different sizes to
be compared to see which is the most power efficient. It allows manufacturers
to see which engine (equipment) will use the least power while still producing
a high amount of output.
Specific power
consumption of HVAC system
The ratio of power consumption (in KW) to the Tons of
refrigeration effect produced.
Specific power consumption
= KW/TR rating
= Actual power consumed by the HVAC (KW input)/Tons
refrigeration effect
If the compressor power is 120KW and net refrigeration
capacity is 130 TR.
Then Specific power consumption = 120 KW/130 TR
= 0.92 KW/TR
For find out HVAC Specific power consumption following
procedure is carried out:
1)
Find out actual power consumed with the help of
electric power analyzer
2)
Find out TR
by
Net refrigeration capacity (TR) = M
x Cp x Delta T/3024