Spar Power Technologies Inc Ventilation on Demand System

Spar Power Technologies Inc. Ventilation on Demand System PAPER PRESENTED AT MEI-2018 LAS VEGA. NV. USA SEP. 6 -8, 2018 HARNAM TREHIN, M. SC. , M. ENG. , P. ENG. EMAIL: HARNAM@SPARPWR. COM PH: 1+(416) 227 -2286 WEBSITE: WWW. SPARPWR. COM

What is Ventilation on Demand? �Ability to direct ventilation air in an underground mine to the area that requires it, at the quantity needed for the local activities at that time. �Requires fan and louvers to control, sensors to measure workplace environment, “tags” to identify where equipment is operating, and a computer control to manage air flow. �Qualified and experienced engineer/organization to implement.

Current Mining Ventilation Models �Focus on determining Airflow (Static) �Specifying Fan requirements �Focus on primary network only

BENEFITS �Following are some of the achievable benefits �From 30% to 50% reduction in a mine’s energy consumption with respect to ventilation. �Reduce strain on power distribution system related to fixed speed starters. �Measureable reduction in Carbon emissions V. O. D. offers Efficient use of ventilation air. �Enhanced air quality, health & safety. �Maximize production through optimum air distribution

The System � Typically a mine’s ventilation system operates at peak capacity when it may not be required but: � SPAR’s proprietary hardware and software is a highly advanced solution that controls the ventilation system air flows in order to meet mine’s production activities. � It analyzes and responds to air quality data, the location of mining personnel and vehicles and optimizes the ventilation requirements and adjusts it accordingly. � SPAR’s OUVS is configured to each mine’s unique requirements using open architecture with built in interface to allow system integration with existing or new process controls.

Control Features � Spar’s Ventilation Monitoring and Control System can be interfaced with the mine’s existing infrastructure or run as a standalone system with following minimum control and monitor functions: � � • Manual – for surface fans, auxiliary fans, bulkhead air flow regulators, dampers and other ventilation related components are controlled manually from the central control room for starting, stopping, speed and/or CFM speed adjustments and/or to disable them for any reason from automatic functions. � � • Scheduled Control – starts/stops of the surface fans, auxiliary fans, bulkhead air flow regulators, dampers and other ventilation related components are controlled at specific times of the day as per production schedule. � � • Ventilation On Demand– Based on the underground environmental conditions due to the presence of dangerous gases, will automatically direct the air to the area where is it required and reducing into the areas where it is not likely to be required, by opening and closing of the dampers and starting/stopping of the air directing fans etc. � � • Environmental Monitoring – Typical environmental monitoring sensors such as SO 2, CO, NOx and temperature are integrated into the system to monitor, control and report the underground environmental conditions.

SYSTEM DESCRIPTION � Zone Monitor and controller � Underground mine is divided into zones such as Portal, Ramp, development and production zones etc. � Each zone has zone controller which is microcontroller based computer board , flow sensors, gas detectors, RF readers etc. � Zone controller and monitoring system are all connected together and to the surface master controller via communication link. The system supports various communication links and any one can be selected based on the site. RS 485, Ethernet, Modbus and CAN networks. � Controller � Zone controller is a proprietary designed microcontroller based smart system that monitors the following: � 1. Air Flow � 2. Concentration of the Dangerous gasses such as COx, NOx, SOx etc. � 3. Diesel operated vehicles entering and exiting the zone. � 4. Number of workers entering and exiting the zone. � � This smart controller automatically calculates the amount of air required based on the number of diesel operated equipment and number of workers to keep the safe work environment. The predefined air requirements are stored based on each type of mine vehicle. � Over the period of time the system continue to self learn from the operational data and optimize the safe set of working conditions for future requiems automatically.

Master Controller � Master controller which is located at the surface has following functions: � Collect the data from each zone controller � Calculates the total volume of air required � Send request to surface VFD via commendation link or analog signal to change the speed of the fan to meet the underground air requirements. � Generate underground ventilation report. � Display ventilation conditions of each and every zone. � Self learn from the operating data over period of time and optimize the requirements automatically (when smart mode is selecyed)

System Components

Redundant Communication

Ventilation System Major Components

Ventilation System Standard Specifications

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