Energy-Efficient Cooling Scheme of Power Transformer: An Innovative Approach Using Solar and Waste Heat Energy Technology

This study discussed the feasibility of developing a system to circulate the heat loss from the coil and iron core of the power transformer equipped for buildings during power supply to the heat recovery unit. This study affixed a copper tube into the transformer insulating oil, allowing the water to circulate at normal temperature in the coil tube, and absorb the heat energy generated by the transformer coil and iron core. The heat energy was then recovered and stored. A low tension power transformer (7.5 KV) was used in the experiment. The operation was carried out in transforming power supply mode to seek for the most suitable recovery unit for various occasions. The test results showed that if the hot water recovery efficiency is 50%, in the course of producing hot water, the mean temperature of 17.5 L normal temperature water can be increased from 20°C to 50°C, thus producing 12.5 kJ heat only spends about 34 min. The results proved that the recovery unit for the heat from the power transformer can benefit from heating, prolong the transformer's lifetime, increase the power supply efficiency, and reduce the air conditioning load to save energy and to reduce global warming.

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Thermodynamical Performance Analysis of Cold Storage Using Waste Heat Energy

Sreyas International Journal of Scientists and Technocrats ◽

10.24951/sreyasijst.org/2018091004 ◽

2018 ◽

Vol 2 (9) ◽

pp. 24-30

Author(s):

Saimanichandra Vasala ◽

◽

Santosh Kumar Panda ◽

Keyword(s):

Performance Analysis ◽

Cold Storage ◽

Waste Heat ◽

Heat Energy

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ENERGY EFFICIENT PIPE HEAT EXCHANGER FOR WASTE HEAT RECOVERY FROM EXHAUST FLUE GASES

Environmental Engineering and Management Journal ◽

10.30638/eemj.2017.114 ◽

2017 ◽

Vol 16 (5) ◽

pp. 1107-1113 ◽

Cited By ~ 2

Author(s):

Andrei Burlacu ◽

Constantin Doru Lazarescu ◽

Adrian Alexandru Serbanoiu ◽

Marinela Barbuta ◽

Vasilica Ciocan ◽

...

Keyword(s):

Heat Exchanger ◽

Energy Efficient ◽

Heat Recovery ◽

Waste Heat Recovery ◽

Waste Heat ◽

Flue Gases ◽

Pipe Heat

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Bifunctional single-atomic Mn sites for energy-efficient hydrogen production

Nanoscale ◽

10.1039/d0nr09104a ◽

2021 ◽

Author(s):

Xianyun Peng ◽

Junrong Hou ◽

Yuying Mi ◽

Jiaqiang Sun ◽

Gaocan Qi ◽

...

Keyword(s):

Hydrogen Production ◽

Energy Saving ◽

Hydrogen Evolution Reaction ◽

Energy Efficient ◽

Low Cost ◽

Clean Energy ◽

H2 Production ◽

Energy Technology ◽

Highly Active ◽

Clean Energy Technology

Electrocatalytic hydrogen evolution reaction (HER) for H2 production is essential for future renewable and clean energy technology. Screening energy-saving, low-cost, and highly active catalysts efficiently, however, is still a grand...

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Analysis of Surface Waste Heat Recovery in IC Engine by Using TEG

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.787.782 ◽

2015 ◽

Vol 787 ◽

pp. 782-786 ◽

Cited By ~ 3

Author(s):

R. Prakash ◽

D. Christopher ◽

K. Kumarrathinam

Keyword(s):

Waste Heat ◽

Electrical Power ◽

Electrical Energy ◽

Surface Heat ◽

Heat Energy ◽

Ic Engine ◽

Point Tracking ◽

Power Point Tracking ◽

Power Point ◽

Heat Energy Recovery

The prime objective of this paper is to present the details of a thermoelectric waste heat energy recovery system for automobiles, more specifically, the surface heat available in the silencer. The key is to directly convert the surface heat energy from automotive waste heat to electrical energy using a thermoelectric generator, which is then regulated by a DC–DC Cuk converter to charge a battery using maximum power point tracking. Hence, the electrical power stored in the battery can be maximized. Also the other face of the TEG will remain cold. Hence the skin burn out accidents can be avoided. The experimental results demonstrate that the proposed system can work well under different working conditions, and is promising for automotive industry.

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Powertrain Waste Heat Recovery: A Systems Approach to Maximize Drivetrain Efficiency

ASME 2012 Internal Combustion Engine Division Spring Technical Conference ◽

10.1115/ices2012-81160 ◽

2012 ◽

Cited By ~ 9

Author(s):

Kevin Laboe ◽

Marcello Canova

Keyword(s):

Fuel Consumption ◽

Waste Heat Recovery ◽

Systems Approach ◽

Waste Heat ◽

Combustion Engine ◽

Heat Energy ◽

Engine Oils ◽

Engine Cooling ◽

Light Duty ◽

Light Duty Vehicles

Up to 65% of the energy produced in an internal combustion engine is dissipated to the engine cooling circuit and exhaust gases [1]. Therefore, recovering a portion of this heat energy is a highly effective solution to improve engine and drivetrain efficiency and to reduce CO2 emissions, with existing vehicle and powertrain technologies [2,3]. This paper details a practical approach to the utilization of powertrain waste heat for light vehicle engines to reduce fuel consumption. The “Systems Approach” as described in this paper recovers useful energy from what would otherwise be heat energy wasted into the environment, and effectively distributes this energy to the transmission and engine oils thus reducing the oil viscosities. The focus is on how to effectively distribute the available powertrain heat energy to optimize drivetrain efficiency for light duty vehicles, minimizing fuel consumption during various drive cycles. To accomplish this, it is necessary to identify the available powertrain heat energy during any drive cycle and cold start conditions, and to distribute this energy in such a way to maximize the overall efficiency of the drivetrain.

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