Improve Equipment Efficiency Research Articles

ENERGY USE, CONSERVATION AND EMISSIONS REDUCTIONS IN TAIWANESE COSMETICS INDUSTRY

This work performs an energy flow case study on the cosmetics industry in Taiwan. In addition, the energy-saving potential of these options is evaluated. It is found that the total potential energy saving amounts to around 2397.0 GJ. It represented a potential reduction of 179.8 tonnes in carbon dioxide emissions. This study establishes an energy flow analysis and energysaving method for this case study, in addition to identifying potential energy-saving areas. The greatest energy-saving potential can result from improving equipment efficiency, which would potentially comprise around 92% of total energy conservation potential. This analysis serves as a benchmark for updating the cosmetics’ products industry operation, and assisting energy users in performing energy management in order to enhance energy utilization efficiency.

IMPROVEMENT OF OPERATIONAL EFFICIENCY OF EQUIPMENT THROUGH TPM: A CASE STUDY

The productivity improvement of workforce, under Indian conditions, is a far cry. Therefore, the left out area is that of equipment and that can be significantly improved through Total Productive Maintenance (TPM). The various researchers have established that TPM is an important tool to improve equipment efficiency and achieving the organizational goals. This approach is to contribute on quality as well cost fronts. TPM is essentially a tool of Lean manufacturing where in the waste need to be identified for elimination. The present study pertains to spot welding workstation which clearly reveals the inherent problems associated with the process function. The various types of wastes on this workstation are bad design of tooling, long changeover time, unplanned machine breakdowns, and machine conditions. Therefore, elimination of these wastes is necessary to improve the equipment operating efficiency (OEE). TPM methodology has been assessed on the spot welding workstation for improvement in present level of 61 % to 68% in first stage, 68% to 75% in second stage and up to or above 85% in the third stage.

Using energy audits to investigate the impacts of common air-conditioning design and installation issues on peak power demand and energy consumption in Austin, Texas

This study presents an analysis of a unique dataset of 4971 energy audits performed on homes in Austin, Texas in 2009–2010. We quantify the prevalence of typical air-conditioner design and installation issues such as low efficiency, oversizing, duct leakage, and low measured capacity, and estimate the impacts that resolving these issues would have on peak power demand and cooling energy consumption. We estimate that air-conditioner use in single-family residences currently accounts for 17–18% of peak demand in Austin, and we found that improving equipment efficiency alone could save up to 205 MW, or 8%, of peak demand. We estimate that 31% of systems in this study were oversized, leading to up to 41 MW of excess peak demand. Replacing oversized systems with correctly sized higher efficiency units has the potential for further savings of up to 81 MW. We estimate that the mean system could achieve 18% and 20% in cooling energy savings by sealing duct leaks and servicing their air-conditioning units to achieve 100% of nominal capacity, respectively. Although this analysis is limited to the City of Austin, understanding the methods described herein could allow electric utilities in similar climates to make better-informed decisions when considering efficiency improvement programs.