NDLI: A control system for the efficient operation of Bulk Air Coolers on a mine

Content Provider	IEEE Xplore Digital Library
Author	van Jaarsveld, S. du Plessis, J.N. Pelzer, R.
Copyright Year	2015
Description	Author affiliation: CRCED-Pretoria, North-West Univ., Pretoria, South Africa (van Jaarsveld, S.; du Plessis, J.N.; Pelzer, R.)
Abstract	The mining sector is a vital contributor to the economy of South Africa. This sector, however, consumes 15% of the country's electrical energy. Deep mine operations require ventilation and cooling (VC) systems, which can account for up to 25% of the mine's electricity cost. Refrigeration systems provide the cold water and air needed by the VC systems to mine at depths of over 2 km. Electricity cost savings on these refrigeration systems can be achieved by using time-dependent operating schedules. Peak-time electricity usage especially needs to be minimised to maximise these cost savings. The focus of this study was the development of a Bulk Air Cooler (BAC) controller, due to the lack of a controller to regulate these systems in the mining industry. This controller enables equipment to adapt dynamically to environmental changes by monitoring the underground temperature and adhering to input boundaries. The BAC controller was implemented on two sites, to control pumps, chillers and fans. A combined daily peak-time usage reduction of 4.3 MW was achieved on the two sites. This translates to an annual cost saving of R831 973. There is also a clear need to reduce electricity usage during the Eskom peak period. The BAC controller was therefore designed to monitor and control mine refrigeration machines. Equipment can thus be switched off during peak periods, provided the environmental parameters comply with safety regulations.
Starting Page	133
Ending Page	137
File Size	722430
Page Count	5
File Format	PDF
ISBN	9780620659130
ISSN	2166059X
DOI	10.1109/ICUE.2015.7280259
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2015-08-18
Publisher Place	South Africa
Access Restriction	Subscribed
Rights Holder	CPUT
Subject Keyword	Temperature measurement Temperature sensors Ventilation and Cooling Refrigeration systems Pumps Switches Control systems Indexes Monitoring Bulk Air Coolers
Content Type	Text
Resource Type	Article

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

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