GMIT eLibrary
Repository of German-Mongolian Institute for Resources and Technology (GMIT):
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- Bachelor Thesis
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KINETIC INVESTIGATION OF SPHALERITE LEACHING IN ETHALINE DEEP EUTECTIC SOLVENT:
(GMIT, 2025) Maral Bat-Erdene; Dr. Purev-Ochir Togtokhbaatar; Prof. Dr. Gero Frisch; Dr. Ehsan Bidari
DESIGN AND IMPLEMENTATION OF A SMART HOME AUTOMATION SYSTEM USING MECHATRONICS
(GMIT, 2025) Batmunkh Tuvshinjargal; Prof. Dr. Sungchil Lee; Prof. Dr. Fredrich Thiessen
This bachelor's thesis presents the design and implementation of a low-cost,
mechatronics-based smart home automation system tailored for a double room
apartment in Mongolia. Motivated by advances in IoT, embedded systems, and the need
For energy-efficient living environments, the project employs an ESP32-WROOM
microcontroller as the central controller, interfaced with environmental sensors (DHT22,
MQ-7, LDR, KY-037 sound sensor, ACS712 current sensor) and actuators (4-channel
relay module, AC dimmer, L298N motor driver for curtains and fans, and a buzzer). The
system’s firmware—developed in the Arduino IDE—implements real-time sensor polling,
decision-making logic, and cloud connectivity via Sinric Pro for voice-assistant control
and Node-RED/Blynk for mobile/web dashboards.
Due to hardware constraints, a KY-037 sound sensor replaced a PIR module for
light control, and a timed automatic shutdown was introduced to mitigate relay sticking
under high loads. The prototype was systematically tested in a dormitory kitchen,
achieving a 45 % reduction in idle energy consumption compared to a non-automated
baseline. Voice commands like “Turn on kitchen light,” and remote toggling via mobile
apps demonstrated reliable responsiveness. A comparative analysis with commercial
solutions (e.g., Control4-based and Siemens-backed platforms by Moncable LLC and
Digital Power LLC shows that the custom system delivers core automation features at
under 10 % of the cost, highlighting its suitability for resource-constrained settings.
Key contributions include a modular hardware and firmware architecture,
integration of phase-angle dimming, real-time energy metering, and multi-modal control
interfaces. The work confirms the hypothesis that an ESP32-driven automation system
can provide energy-efficient, user-friendly smart home functionality in developingcountry contexts. Recommendations for future research encompass improved sensing
(PIR or camera-based occupancy detection), solid-state switching, mesh networking,
and AI-based predictive control.
EXPLORING CARBON OFFSETTING IN MONGOLIA’S MINING SECTOR: OPPORTUNITIES AND INTEGRATION INTO GLOBAL MARKETS:
(GMIT, 2025) Ganduulga Gantumur; Prof.Dr. Bolormaa Purevjav; Prof.Dr. Fredrich Thiessen
This thesis explores the potential of carbon offsetting within Mongolia’s mining sector,
focusing on two major companies: Oyu Tolgoi (OT) and Erdenes Tavan Tolgoi (ETT). As
the mining sector is one of the largest sources of greenhouse gas (GHG) emissions in
Mongolia, implementing carbon offsetting strategies is seen as a viable option to mitigate
its environmental impact while potentially engaging with global carbon markets. This
research aims to assess the feasibility of carbon offset projects, including renewable
energy, methane capture, afforestation, and reforestation, for both companies.
The research is based entirely on secondary data collected from published reports,
company documents, government publications, and academic papers. The analysis
primarily involves document analysis to extract relevant information regarding the
emissions profiles of OT and ETT, as well as their current and potential carbon offset
initiatives. Emissions data, such as those reported in the companies' annual
environmental reports, were used to model the potential for carbon offset generation. In
addition, financial viability was assessed using Marginal Abatement Cost (MAC)
analysis, comparing the cost of reducing emissions to the potential revenues from carbon
credits.
The findings indicate that OT has a higher level of institutional readiness for carbon
market integration, with ongoing renewable energy projects and established emissions
reporting processes. In contrast, ETT, while having a higher potential for carbon offset
generation, faces challenges such as the lack of verified emissions data and limited
internal monitoring and verification (MRV) systems. Both companies, however, show
significant potential for generating carbon credits through methane capture,
reforestation, and renewable energy initiatives. If integrated into international carbon
markets, these projects could provide both environmental and financial benefits for the
companies.
This study highlights the need for strengthening institutional capacity, developing robust
MRV systems, and creating clear regulatory frameworks to enable Mongolia’s mining
sector to effectively participate in carbon offsetting and carbon trading schemes. It also
provides valuable insights into the economic feasibility of carbon offset projects and their
potential role in Mongolia’s transition to a low-carbon economy
THE ROLE OF SUSTAINABILITY IN ENGINEERING PROJECT MANAGEMENT
(GMIT, 2025) Munkhtur Uurtsaikh; 1 st Supervisor: Prof. Dr. Bolormaa Purevjav; 2 nd Supervisor: Mr. Battseren Batmunkh
DESIGN AND OPTIMIZATION OF VARIABLE FREQUENCY DRIVE SYSTEMS FOR OVERHEAD CRANES:
(GMIT, 2025) Uyanga Altantsetseg; 1 st Supervisor; Prof. Ph.D., Ariunbolor Purvee; 2 nd Supervisor: Mr. Tuvshin Ganhuyag
This thesis examines the configuration and optimization of a variable frequency drive (VFD) system
for an overhead crane to enhance its operational efficiency and reliability. The overhead crane is
operated via a Telecrane remote control system and powered by a squirrel cage motor. It is
equipped with two hooks: a 20-tonne hook and a 5-tonne hook. However, the 5-tonne hook was not
functioning properly, resulting in downtime for the workshop operations.
To address these issues, a variable frequency drive was installed, along with an AC magnetic
contactor, an electromechanical relay, and two intermediate power relays. Furthermore, a brake resistor
was integrated to improve deceleration, with additional cabling for the control circuit and power line
to interconnect the motor and hoist, ensuring signal integrity and electromagnetic compatibility. The
implementation of the VFD offers several advantages, including precise speed control, reduced
mechanical stress, smoother movement, and improved energy efficiency.
This study systematically documents the Variable Frequency Drive (VFD) configuration process,
highlighting the integration of adaptive programming for predictive protection, dynamic braking, and
intelligent load-handling strategies. The analysis evaluates performance gains, addresses
implementation challenges, and outlines system-level improvements. The findings contribute to
best practices for industrial VFD retrofits in crane systems, demonstrating their potential to enhance
operational reliability, reduce mechanical wear, and improve energy efficiency in continuous-use
workshop environments.