Experimental Investigation of Vapour Phase Drying System

9 Pages Posted: 19 Jan 2018

See all articles by Chetan Sawant

Chetan Sawant

Vishwakarma Institute of Information Technology - Department of Mechanical Engineering

Mukund Nalawade

Vishwakarma Institute of Information Technology - Department of Mechanical Engineering

Nikhil Choudhary

NACH Engineering Pvt. Ltd

Date Written: December 21, 2017

Abstract

Electrical equipment such as power transformer is required to withstand high voltages during the process of power transfer from primary to secondary. So it is always required to have adequate insulation. Types of insulation material used in transformer are insulation oil, insulation paper (Craft paper), pressboard, wood and insulation tape. A major factor that affects performance and life of transformer is, “moisture in the transformer”. The term, moisture in the transformer, either refers to the water absorbed by the paper in the transformer, or the water that gets dissolved in the oil of the transformer. In the transformer industry the process of heat extraction is done regularly as part of the production process Drying of transformers must be done because such moisture is injurious to the health of the transformers. Moisture inside transformer reduces the electric strength, resistivity and accelerates deterioration of solid insulation. By removing moisture from transformer insulation, one can maintain its insulation properties. Conventional method used for removing such moisture content from transformer is Simple Vacuum Drying (SVD) Method. Over the period the process has not remained efficient in terms of energy and efficiency. Use of vacuum has improved the process largely but a lot needs to be done on the thermal engineering aspects of the moisture removal process. So advanced and more efficient method used for drying for transformer is Vapour Phase Drying (VPD) Method. Experimental analysis for both methods is done and results with conclusion are discussed in this research paper. From results it observed that increase in drying percentage by use of VPD Method is around 70% as compared to SVD Method.

Keywords: Transformer, Insulation, Moisture, Vacuum, Vapour, Drying

Suggested Citation

Sawant, Chetan and Nalawade, Mukund and Choudhary, Nikhil, Experimental Investigation of Vapour Phase Drying System (December 21, 2017). International Conference on Advances in Thermal Systems, Materials and Design Engineering (ATSMDE2017). Available at SSRN: https://ssrn.com/abstract=3101274 or http://dx.doi.org/10.2139/ssrn.3101274

Chetan Sawant (Contact Author)

Vishwakarma Institute of Information Technology - Department of Mechanical Engineering ( email )

Pune
Maharashtra
India

Mukund Nalawade

Vishwakarma Institute of Information Technology - Department of Mechanical Engineering

Pune
Maharashtra
India

Nikhil Choudhary

NACH Engineering Pvt. Ltd

Plot No. S-42, ‘T’ General block
Opp. Pawana Industrial Complex, Near Bhosari Post
Maharashtra, Pune 411026
India

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