Hydraulic fluid heats when flowing through a restriction as the pressure energy upstream of the restriction is converted into thermal energy.
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|ΔT = Temp. rise in °F
ΔP = Pressure drop in psi
S = Specific gravity
c = Specific heat
*Specific Heat at 100°F.
If a Lee Jet is flowing MIL-H-83282 at 120°F and 2500 psid, the temperature rise across the Lee Jet is computed as follows: For MIL-H-83282 at 120°F, S = 0.82, c = 0.50