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113 results on '"Iqbal, M. Tariq"'

1. Sizing and Dynamic modeling of a Power System for the MUN Explorer Autonomous Underwater Vehicle using a Fuel Cell and Batteries

Author

Albarghot, Mohamed M., Iqbal, M. Tariq, Pope, Kevin, and Rolland, Luc

Subjects
Physics - Applied Physics
Abstract

The combination of a fuel cell and batteries has promising potential for powering autonomous vehicles. The MUN Explorer Autonomous Underwater Vehicle (AUV) is built to do mapping-type missions of seabeds as well as survey missions. These missions require a great deal of power to reach underwater depths (i.e. 3000 meters). The MUN Explorer uses 11 rechargeable Lithium-ion (Li-ion) batteries as the main power source with a total capacity of 14.6kWh to 17.952kWh, and the vehicle can run for 10 hours. The draw-backs of operating the existing power system of the MUN Explorer, which was done by the researcher at the Holyrood management facility, include mobilization costs, logistics and transport, and facility access, all of which should be taken into consideration. Recharging the batteries for at least 8 hours is also very challenging and time consuming. To overcome these challenges and run the MUN Explorer for a long time, it is essential to integrate a fuel cell into an existing power system (i.e. battery bank). The integration of the fuel cell not only will increase the system power, but it will also reduce the number of batteries needed as suggested by HOMER software. In this paper, an integrated fuel cell is designed to be added into the MUN Explorer AUV along with a battery bank system to increase its power system. The system sizing is performed using HOMER software. The results from HOMER software show that a 1kW fuel cell and 8 Li-ion batteries can increase the power system capacity to 68 kWh. The dynamic model is then built in MATLAB/Simulink environment to provide a better understanding of the system behavior.The 1kW fuel cell is connected to a DC/DC Boost Converter to increase the output voltage from 24V to 48V as required by the battery and DC motor., Comment: A hydrogen gas tank is also included in the model. The advantage of installing the hydrogen and oxygen tanks beside the batteries is that it helps the buoyancy force in underwater depths. The design of this system is based on MUN Explorer data sheets and system dynamic simulation results

Published
2019

3. Evaluating the Impact of Time-of-Use Billing on Energy Costs in a University Building in Newfoundland, Canada.

Author

Liyanage, Chamila J. and Iqbal, M. Tariq

Subjects
*ELECTRIC heating, *ENERGY industries, *HOT water, *CONSTRUCTION cost estimates, *COLLEGE buildings
Abstract

Globally, buildings contribute to about 30% of total energy demand, with over half of this consumption in Canada attributed to space heating and cooling. This presents an opportunity for substantial energy and cost savings. Many buildings are transitioning to electric heating for efficiency and cost-effectiveness, but different tariff structures can result in unexpected cost increases, necessitating adjustments to the building's regular operational patterns to mitigate expenses. This study employs a building energy model developed with the OpenStudio application to conduct a comparative analysis, focusing on the impact of various tariff structures using the MUN CSF building as the case study. It investigates the impact of transitioning from a flat-rate tariff to a time-of-use tariff on energy costs, even with the adoption of energy-efficient electric resistive heating compared to the current oil-fired hot water boiler. The findings indicate that the retrofit, which proves cost-effective under a flat-rate tariff, might not yield financial savings and could potentially increase energy costs under a time-of-use tariff. The simulation results show an energy cost of CA$1,029,089 under the flat-rate tariff, derived from historical data, and CA$1,980,110 under the time-of-use tariff, based on current tariffs in Newfoundland and Ontario. This suggests that energy costs under the time-of-use tariff can nearly double compared to the flat-rate tariff, with the same amount of energy consumed and a similar usage pattern. [ABSTRACT FROM AUTHOR]

Published
2024

36. Dynamic Modelling of a Solar Energy System with Vehicle to Home Option for Newfoundland Conditions

Author

Sundararajan, Raghul Suraj, Iqbal, M. Tariq, Sundararajan, Raghul Suraj, and Iqbal, M. Tariq

Abstract

This paper discusses the dynamic modelling of a solar energy system with vehicle to home (V2H) option for Newfoundland condition. A location was chosen (13 Polina Road) in St. John’s, Newfoundland, Canada. Using BEopt, Homer and MATLAB software, an optimized system was designed for the chosen site to satisfy the house’s energy demand. Furthermore, the concept of V2H is also implemented with aid of smart current sensors installed in the house. When the power provided by the PV panel and the stored energy in the inhouse battery is less than the load’s energy demand, the Nissan Leaf’s battery used to supply home loads in V2H operation mode. The system operates based on the information generated by the sensors. Detailed system dynamic modelling is also presented along with the simulation results. Eight system control modes are proposed and simulated.

Published
2021

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