In terms of effective efficiency, the sinusoidal corrugations are found to be highly effective at lower flow rate conditions and generally have a relatively narrow useful operating range of flow Reynolds number.
It also explains how well the LUMS helps the operator to estimate the useful operating life available before any potential failure occurs.
As a representative nonlinear PEH, we fabricate and evaluate a monostable PEH in terms of generated power and useful operating bandwidth when it is connected to AC and DC interface circuits.
The dependences analysis between the non-conformities level (PN) and downtime (TP), breakdown time (TA), coefficient of operation (WE), coefficient of speed (WPD), coefficient of useful operating time (UCD) and coefficient of utilization (WW) are shown in Table 4.
The impacts of individual factors of TPM: breakdown time (TA), downtime (TP), coefficient of operation (WE), coefficient of utilization (WW), the coefficient of speed (WPD), the useful operating time, time of accident forms (TAF) and the time machine failure (TAM) on the level of quality (BS represented as the level of non-conformity) are presented in the form of the correlation graph (Fig. 3).
The performance increase exceeds 30% throughout the useful operating range.
The analysis of Fig. 4 shows that the useful operating time significantly affects the quality of the machine in case of machine M2.
The useful operating time significantly affects the quality only in the case of machine M2, due to the large differences between the ideal and the real-time implementation of a single piece casting.
Finally, the performance data for different inlet mass flow rates and wall thermal conductivities revealed useful operating points of the microcombustor for applications including micro-propulsion, heating and portable electric power generation.
On the basis of machine working time, taking into account failures and other outages, the analysis for TPM coefficients was calculated: coefficient of operation (WE), coefficient of the speed (WPD), coefficient of utilization (WW) and coefficient of useful operating time (UCD), calculated according to formulas (1), (2), (3), and (4) (Borkowski and Selejdak 2007; Jostes and Helms 1994).
