HDERHomeland Defense Equipment Reuse
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The SHDER was calculated by dividing the HDER by the combined electrical power consumed by the fan, controller, proportional valve, and coolant pump.
SHDER [equivalent] [[??].sub.he,nf]/[[??].sub.elec,nf]/[[??].sub.he,w]/[[??].sub.elec,w] = HDER/([[??].sub.elec,nf]/[[??].sub.elec,w] = HDER x [[??].sub.elec,w]/[[??].sub.elec,nf].
Although the pump consumed more electrical power at the high coolant flow rate (Figure 5), the HDER was greater than the increase in the electrical power consumed.
Two performance indices, the HDER and SHDER, were defined and calculated.