A boiler is rated at 2 5 0 0 kW . If the boiler efficiency is 8
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A boiler is rated at kW If the boiler efficiency is a find the consumed amount of fuel in Jhrb discuss the energy saving opportunities in boilers. c discuss the heat recovery methods and identify the energy saving potentials from waste heat recovery.
An HVAC system provides kJh of cooling while drawing kW of electricity. a calculate its COP. b discuss various HVAC Energy Efficiency measures.
For an air compressor, the free air delivery is mmin The final pressure is times the initial pressure. The initial pressure is times the atmospheric pressure. The time taken to reach the final pressure is minutes. a Select an appropriate sizing of air receiver. b discuss the energy saving opportunities in air compressor.
A building has a gypsum wall of mm and fiber glass of cm The inside and outside temperatures are C and C respectively. The wind speed is ms The area of the wall is m The fiberglass thermal conductivity is WmC Find the heat transfer.
watt fluorescent lamps are replaced with LED lamp that save to give the same output. The cost of one LED lamp is $ Provide your opinion regarding this measure using NPV The required IRR is Hours of operation are hr the lamp life is yr KWh cost is $kWh
An auditor has measured the speed, input voltage, input current, and power factor of a motor. The measured values were RPM V A power factor. The motors nameplate is presented in Figa estimate the motors loading and efficiency. b according to the presented case, suggest opportunities for energy efficiency improvement. c explain the problem associated with VFDbased motor and suggest a solution for solving itd If the threephase line voltages of a motor are and V Calculate the imbalance current. suggest a solution for imbalance problem.
Related Book For
Cambridge International AS & A Level Further Mathematics Coursebook
ISBN: 9781108403375
1st Edition
Authors: Lee Mckelvey, Martin Crozier
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