performance curves

performance curves

[pər′fȯr·məns ‚kərvz]
(engineering)
Graphical representations showing the abilities of rotating equipment at various operating conditions; for example, the performance curve for a compressor would include rotor speed for various intake and outlet pressures versus gas flow rate adjusted for temperature, density, viscosity, head, and other factors.
References in periodicals archive ?
The EnergyPlus runs use DX cooling performance curves directly converted from eQuest for the CCAP(EWB,ODB): total cooling capacity as a function of outside dry-bulb (ODB) and entering wet-bulb temperatures (EWB), the EIR(EWB,ODB): cooling efficiency (Energy-Input-Ratio) as a function of outside dry-bulb and entering wet-bulb temperatures, and the EIR(PLR): cooling efficiency as a function of part-load ratio (PLR).
With full operating performance curves available throughout the full range of output - and at various operating pressures - Fulton claims its VSRT provides very high operating efficiencies (84% gross thermal efficiency compared to approximately 80% from equivalent models), which result in lower operating costs.
With the exception of the GAHP Combi system, all model parameters for the different HVAC combinations (e.g., performance curves) were obtained from BEopt 2.7 [NREL, 2016].
The engine performance curves were determined on the basis of the NBR ISO 1585 (1996) standard and are shown in figure 1.
This could be related to the iPhone 6s' battery issues that Apple announced over a year ago, but it could also be a sign that Apple is using different performance curves for each device.
The performance curves of the regenerative pump working with these fluids were compared to assess the effect of fluid viscosity on the operation of regenerative pump.
Figure 17 shows jet pump performance curves (purge flow rate vs.
On the other hand, the co-channel interference also severely affects the system achievable rate performance and degrades the performance curves at high SNR regimes.
The performance curves of the test rig are shown in Figure 3.
Caption: Figure 18: BER performance curves of matched filter-based receiver with ideal antenna.
2.1 Three (3) copies of the following shall be submitted with the bid: 2.2 Catalog Data for each product as follows: 2.3 Certified performance curves with system operating conditions indicated.
The pump manufacturer normally describes the pump characteristics graphically with pump performance curves. The pump curve describes the relationship between flow rate and head for the actual pump.

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