Energy savings and emissions reductions for rewinding and replacement of industrial motor

Hasanuzzaman, M.; Rahim, N.A.; Saidur, R.; Kazi, S.N.

doi:10.1016/j.energy.2010.10.046

Cited by 132 publications

(48 citation statements)

References 27 publications

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“…Thus, an electric motor's torque is biased within its tolerance; the rotation speed barely influences. The energy efficiency of standard motors in the typical range is 83-92% (Hasanuzzaman et al 2011). For high load working vehicles such as AT, constant high output ability and momentary overload ability are very important.…”

Section: Performance Of Ice and Electric Motormentioning

confidence: 99%

Feasibility Study of Motor Powered Agricultural Tractors Based on Physical and Mechanical Properties of Energy Sources

Jing

Noguchi

Ahamed

2018

Agricultural Information Research

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The alternate power utilization instead of Internal Combustion Engine (ICE) in an agricultural tractor (AT) was studied by simulation approach for the drivelines of electric battery (EB), fuel cell (FC) and reformed methanol fuel cell (RMFC). The working hours were considered 4 with comparison of weight, volume, soil pressure, and fuel efficiency. In weight comparison, 12% overweight in FC-AT, 16% overweight in RMFC-AT, and 99% overweight of EB-AT were observed for the rated output power of light duty tractor (17.25 kW). Less than 5% overweight of FC-AT and RMFC-AT, and 39%-62% overweight of EB-AT were observed for rated output power of medium and heavy-duty tractor (33.75-75.00 kW). Soil pressure in the root-growing block was observed less than 130 kPa for EB-AT, FC-AT, RMFC-AT in the rated output power from 17.25-75.00 kW. In all the alternatives, ±5% fluctuations in the volume were observed. In the design stage, we proposed, that FC-AT was the best alternative considering weight, volume, and soil pressure. Furthermore, the analytical software AVL Cruise ® was used for vehicle drive line system to find out how weight affects the performance for 75.00 kW EB-AT. The analysis was designed for 4 working hours with full load at 20 km/h of velocity using AVL Cruise ® . The peak velocity was found less than 14.1 km/h, and constant working time was only 3 hours, because of the severe overweight by EB storage.

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Section: Performance Of Ice and Electric Motormentioning

confidence: 99%

Feasibility Study of Motor Powered Agricultural Tractors Based on Physical and Mechanical Properties of Energy Sources

Jing

Noguchi

Ahamed

2018

Agricultural Information Research

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“…Annual energy savings (AES) through the replacement of standard efficient motors with highly energy-efficient motors can be estimated by using the methodology described in references (Garcia et al 2007;Saidur et al 2009bSaidur et al , 2010aHasanuzzaman et al 2011).…”

Section: Mathematical Formulations To Estimate Energy Savings By Usinmentioning

confidence: 99%

Energy, economic, and environmental analysis of the Malaysian industrial compressed-air systems

Saidur

Hasanuzzaman

Rahim

2011

Clean Techn Environ Policy

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Compressed-air systems account for about 10% of the total industrial-energy use in Malaysia and some other countries. Compressed air is typically one of the most expensive utilities in an industrial facility. Opportunities for potential savings can thus be sought and identified. This article estimates the energy used by compressed-air systems in Malaysian industries. Various energy-saving measures, such as use of high efficient motors, variable speed drive (VSD), leak prevention, use of outside intake air, reducing pressure drop, recovering waste heat, and use of efficient nozzle, were applied to save compressed-air energy and then the results were compared with available literatures. For an electric motor used in a compressed air system, a sizeable amount of electric energy and utility bill have been found to be saveable using high efficient motors and applying VSDs in matching the speed requirements. Also, significant amounts of energy and emission are reducible through various energy-saving strategies. Payback periods for different energy saving measures have been estimated and found to be economically viable in most cases. List of symbolsAES ia Energy savings associated with the usage of outside intake air temperature AES pd Energy savings due to pressure drop AES Annual energy savings AES cs_leak Annual energy savings by preventing leak (MWh) AEU Annual energy usage c Average energy cost (US$/kWh) E ee Energy-efficient-motor efficiency rating (%) EF Emission factor ER Emission reduction E std Standard-motor efficiency rating (%) ES VSD Energy savings with the application of VSD FR i Ratio of proposed power consumption to current power consumption H avg_usage Annual average usage hours hp Motor's rated horsepower hr Annual operating hours HRF Heat recovery factor k Ratio of specific heat for air (k = 1.4) L Load factor (percentage of full load) n Number of motors P dc Discharge pressure at current pressure conditions (kPa) P dp Discharge pressure at proposed operating pressure conditions (kPa) P i Inlet pressure (atmospheric pressure) (kPa) P Motor power (kW) S SR Percentage energy savings associated certain percentage of speed reduction T I The average temperature of inside air (°C) T o The annual average outside air temperature (°C) VSD Variable speed drive

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“…It is confirmed that in internal combustion engines (ICEs), more than 30-40 % of fuel energy wastes from the exhaust and just 12-25 % of the fuel energy converts to useful work [1,2]. In the other hand, statistics show that producing amounts of the internal combustion engines grow very fast and the concern of increasing the harmful greenhouse gases (GHG) will be appeared.…”

Section: Introductionmentioning

confidence: 99%

Investigations of fin geometry on heat exchanger performance by simulation and optimization methods for diesel exhaust application

Hatami

Ganji

Gorji-Bandpy

2015

Neural Comput & Applic

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In this paper, three cases of heat exchangers (HEXs) in the exhaust of a diesel engine are modeled numerically for improving the exergy recovery amount. Simple double pipes, longitudinal and circular finned-tube HEXs are modeled to study the fin effect in waste heat recovery amount. It is tried to compare the circular and longitudinal fin's effect (with the same surface area) on exergy recovery and pressure drop in the exhaust. As a main outcome, results show that circular fins cannot enhance exergy recovery due to trapping the gases between them and producing a high pressure drop compared to longitudinal fins. Also, L 16 Taguchi array is applied to find the most important parameters in longitudinal fins to find the optimum design for this heat exchanger. Finally, a multi-objective optimization by central composite design is applied to find the optimum dimensions of proposed HEX in different engine loads.

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Energy savings and emissions reductions for rewinding and replacement of industrial motor

Cited by 132 publications

References 27 publications

Feasibility Study of Motor Powered Agricultural Tractors Based on Physical and Mechanical Properties of Energy Sources

Feasibility Study of Motor Powered Agricultural Tractors Based on Physical and Mechanical Properties of Energy Sources

Energy, economic, and environmental analysis of the Malaysian industrial compressed-air systems

Investigations of fin geometry on heat exchanger performance by simulation and optimization methods for diesel exhaust application

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