Prospective of Energy Efficiency Practice, Indicator and Power Supplies Efficiency

assessment of the efficiency of s.p.g.c refineries using network dea

data envelopment analysis (dea) is a powerful tool for measuring relative efficiency of organizational units referred to as decision making units (dmus). in most cases dmus have network structures with internal linking activities. traditional dea models, however, consider dmus as black boxes with no regard to their linking activities and therefore do not provide decision makers with the reasons...

Energy Efficiency and Electrical Power Generation

Designing Auxiliary Power Supplies for High Efficiency and Low Standby Power

Auxiliary power supplies are required to have low standby power consumption at light-load conditions. These power supplies also require features such as low cost, high efficiency, and a Line Under-Voltage Lockout (UVLO) function to detect the input voltage so the main power supply does not operate at low input voltage ranges. Fairchild’s FSQ510 has been specifically designed for low standby pow...

Energy use efficiency, GHG emissions, and carbon efficiency of paddy rice production in Iran

The energy efficiency, greenhouse gas (GHG) emissions, and carbon efficiency of paddy rice production were analysed in Sari in the Mazandaran province of Iran during 2011–2012. Data was collected through questionnaires and interviews with paddy producers. The results showed that the net energy gain was 27,932 MJ ha-1 and energy efficiency was 1.83 during production. The results o...

Energy use efficiency, GHG emissions, and carbon efficiency of paddy rice production in Iran

The energy efficiency, greenhouse gas (GHG) emissions, and carbon efficiency of paddy rice production were analysed in Sari in the Mazandaran province of Iran during 2011–2012. Data was collected through questionnaires and interviews with paddy producers. The results showed that the net energy gain was 27,932 MJ ha-1 and energy efficiency was 1.83 during production. The results o...