POLYTECHNIC UNIVERSITY OF THE PHILIPPINES
BRIDGING MECHANICAL MOTION AND ELECTRICAL POWER
GENERATION: A RECYCLABLE ENERGY SYSTEM UTILIZING FAN
MOBILITY
A Project Proposal
Presented to the Faculty and Course Specialist on
Department of Electrical and Mechanical Engineering Technology
Institute of Technology
Polytechnic University of the Philippines, Manila
In Partial fulfillment and Requirements for the Diploma course on
Diploma in Electrical Engineering Technology
By
ANGELICA GALICIA
ANGELITA C. MADEJA
CASSANDRA MAE S. GUDIO
EDWIN GERALD SABADO
MARROS LOUIS DIAZ
Project Consultant
ENGR. RAYMOND ALFONSO
ASSI. PROF. JOHN MICHAEL LEGASPI
2nd Semester 24’25
POLYTECHNIC UNIVERSITY OF THE PHILIPPINES
ABSTRACT
The rising demand for electricity, along with higher temperatures, has created an urgent
need for alternative and sustainable energy sources. This study develops a regenerative power
system that captures the kinetic energy of electric fans through a dynamo mechanism without
affecting their main function of cooling. The system changes mechanical energy into electrical
energy, offering a low-cost way to power small electronic devices and reduce household
electricity use. A prototype was built using a stand fan, rectifier, transformer, and rechargeable
battery to show how energy can be recovered efficiently. This project is designed to help
households, rural communities, schools, and small businesses lower their energy costs and
improve emergency readiness. In conclusion, the system provides a simple, eco-friendly
solution to energy waste and unreliable power supply.
POLYTECHNIC UNIVERSITY OF THE PHILIPPINES
BACKGROUND OF THE STUDY
The world is a vast reservoir of energy. The law of conservation of energy states that,
energy cannot be created nor destroyed only transformed from one form to another. However,
due to the continuous surge of demand in electricity, enough supply of energy seems to be
deemed as shallow to meet the everyday energy requirement that the world is requiring every
day. According to Lou et al., (2019), it is projected that by 2040 the growing global demand in
energy requirements will rise and blow up to 50% of what is required today. As such concerns
are alarming, the need of coming up with an alternative source of energy has never been
this crucial. There is a pressing need to identify and develop sustainable and alternative energy
solutions. A study conducted by Lobitos et al., (2024) titled “Fan Mobility by Generated
Electricity Harnessed from Dynamo” explores the conversion of one form of energy from
another. It deals with integrating dynamo technology with electric fans to convert the
mechanical energy from fan rotation into electrical energy through electromagnetic induction.
Treating electric fans in a dual-purpose manner; a viable support source generator and a
provider of comfort through cooling the environment. The study holds a great potential to help
aid the community especially in rural areas where power outage behaves in a consistent
manner.
According to the Philippine Atmospheric, Geophysical and Astronomical Services
Administration (PAGASA), the heat index—a measure of how hot it feels when relative
humidity is factored in with the actual air temperature—has reached dangerously high levels
in recent months. In April 2024, a heat index of 53°C was recorded in Iba, Zambales, marking
the highest in the country for that year. The increase in temperature affects the electricity
consumption of every household mainly due to continuous operation of electric fans and other
cooling systems to combat the discomfort provided by the extreme heat occurrence (Galita &
Valerio, 2022).
POLYTECHNIC UNIVERSITY OF THE PHILIPPINES
This study aims to mitigate the extreme surge of electricity consumption and at the
same time offers a feasible regenerative power source by providing a low-cost method for
recovering wasted energy by harvesting kinetic energy from the daily operation of an electric
fan to power small electronic devices without interfering with the primary function of the fan.
The researchers aim to lower energy waste and increase the amount of conserved energy by
developing a cyclical regenerative power source.
STATEMENT OF THE PROBLEM
This study seeks to investigate the feasibility of creating a cyclical, reusable energy
system by creating dual-purpose electric fans equipped with charge generators. This system is
a combined integration of both electrical and mechanical mechanisms. Specifically the
researchers aims to answer the following:
1. How effective integrating electrical and mechanical systems in creating a selfsustainable fan that reduces dependency on external power sources?
2. How long does the electric fan need to run continuously for the generator to store
enough energy in the battery?
3. What kinds of electronic or electrical devices can be powered using the energy stored
in the charged battery?
4. What are the advantages and disadvantages of utilizing a self-sustainable fan in terms
of efficiency and cost?
5. Despite all the disadvantages, what makes the development of a self-sustaining fan
relevant and necessary?
POLYTECHNIC UNIVERSITY OF THE PHILIPPINES
SUMMARY OF REVIEW OF RELATED STUDIES
The literature review examines various studies focused on kinetic energy harvesting
systems, particularly in household appliances like fans. Bin Azahar et al. (2021) explore the
potential of recovering wasted energy from the operation of table fans, proposing a passive
energy harvesting system that powers small devices without disrupting the fan's primary
function. The study emphasizes the growing need for sustainable energy solutions due to the
predicted global rise in energy demand by 2040. David (2017) discusses the role of
electromagnetic induction in generating electricity, emphasizing that while "free energy" is a
misconception, small-scale systems like bicycle-mounted generators and repurposed PC fans
offer low-cost, efficient solutions for localized energy generation. Saravanakumar et al. (2024)
investigate the untapped potential of vehicle radiator fans as wind turbines, harnessing kinetic
energy from vehicle movement to generate electricity, thus addressing challenges like wind
turbine intermittency. Gadkari et al. (2014) propose integrating dynamo systems into ceiling
fans, offering a scalable and sustainable method to generate electricity for small devices like
LED lights or phone chargers, particularly useful in areas with frequent power outages. Lobitos
et al. (2024) expand on this concept by exploring how dynamo technology integrated into
electric fans can convert kinetic energy into usable electrical energy, promoting energy
independence, reducing environmental impact, and supporting sustainable development. The
collective findings highlight the significant potential of everyday mechanical systems for
energy recovery and the growing trend of utilizing low-cost, decentralized energy solutions.
These studies collectively contribute to the broader discourse on energy sustainability,
demonstrating that everyday appliances can play a key role in achieving energy efficiency and
reducing reliance on traditional power sources. Through these innovative systems, kinetic
energy harvesting offers an effective way to support renewable energy goals while enhancing
energy security, particularly in off-grid or resource-limited regions.
POLYTECHNIC UNIVERSITY OF THE PHILIPPINES
OBJECTIVES OF THE STUDY
The growing demand for electricity, combined with the rising temperatures and
increased use of cooling devices, has led to a significant surge in household energy
consumption. To address these challenges, this study explores the potential of a regenerative
power system that harnesses kinetic energy from electric fans. The following objectives guide
this study in its effort to mitigate energy consumption and contribute to the development of
efficient energy recovery systems.
The primary objective of this study is:
To design and develop a regenerative power system that harnesses kinetic energy from
the operation of electric fans without disrupting their primary function of providing
environmental cooling.
The specific objectives are:
1. To integrate a dynamo mechanism with electric fans to convert mechanical energy into
electrical energy through electromagnetic induction.
2. To create a low-cost system capable of generating supplementary power for small
electronic devices.
3. To help mitigate the rise in household electricity consumption caused by prolonged use
of cooling appliances.
4. To provide a feasible alternative energy source, especially for communities affected by
frequent power outages.
5. To contribute to energy conservation by recovering and utilizing energy that would
otherwise be wasted during daily fan operations.
POLYTECHNIC UNIVERSITY OF THE PHILIPPINES
SOLUTION & FEATURES
This research project explores an innovative electric fan that integrates a dynamo to
convert its mechanical energy into electrical energy, which is then stored in a battery,
addressing several pressing real-world issues. By capturing the energy from the spinning
blades, the fan reduces energy waste and increases efficiency. It provides a practical solution
for areas affected by frequent power outages or those living off-grid, offering a way to charge
small devices when electricity is unavailable. The system supports sustainability by
encouraging micro-energy generation and reducing dependence on non-renewable sources,
making it especially valuable in emergencies where stored energy can power essential devices.
Beyond its practical applications, the concept offers cost savings, educational value in
demonstrating energy conversion, and the potential for scalability to other appliances which
ultimately promote eco-conscious design and innovation in everyday technology.
These are some real-world issues that should be addressed and where this project will
be greatly beneficial:
1. Energy Waste
Problem: Traditional electric fans consume electricity but waste the mechanical energy
generated by the spinning blades.
Solution: Harvesting this energy via a dynamo adds efficiency and reduces waste.\
2. Power Shortages / Blackouts
Problem: In areas with frequent power outages, people struggle to charge devices or use small
electronics.
Solution: The fan can charge a battery while running, providing backup power.
3. Off-grid or Rural Areas
Problem: Lack of access to reliable electricity in remote locations.
POLYTECHNIC UNIVERSITY OF THE PHILIPPINES
Solution: The fan-dynamo system can generate and store small amounts of electricity from
regular use.
4. Sustainability and Eco-awareness
Problem: Overdependence on non-renewable energy sources.
Solution: Encourages micro-energy generation and sustainability at the household level.
5. Emergency Preparedness
Problem: In emergencies (typhoons, earthquakes), there's often no power for essential
communication devices.
Solution: Stored energy can charge phones or lights for emergency use.
Figure 1. Proposed Generator Fan Prototype
POLYTECHNIC UNIVERSITY OF THE PHILIPPINES
Figure 1. shows the proposed Generator Fan Prototype. The design was intentionally
made simple and neat to ensure that the fan can still function normally. A large storage box is
attached, serving both as the stand for the fan and as a housing unit to support and store the
internal components and the program that will be connected to the fan.
MATERIALS & COSTINGS
Types and Description of Materials Used
There are four (4) major parts that compose the prototype, such as the stand fan
connected assembled in chases, the rectifier, transformer and rechargeable battery as the power
supply.
This gives the prototype a new structure, which is not far from those available in the
market.
GENERATOR FAN
Table 1. Bill of Materials
No. Quantity
Unit
MATERIALS
Unit Price Total Price
1
1
pc
Stand Fan
P1,290.00
P1,290.00
2
1
pc
Rechargeable Battery 12V 9H
P800.00
P800.00
3
2
pcs
Generator
Regulator P243.00
P486.00
Voltage
Rectifier
4
1
pc
Arduino UNO R3
P500.00
P500.00
5
1
pc
Transformer 110/220 Voltage
P240.00
P240.00
POLYTECHNIC UNIVERSITY OF THE PHILIPPINES
6
50
Wire 14 or 16 AWG wire size 50M
P250.00
P250.00
meters
7
2
pcs
Electrical Tape
P25.00
P50.00
8
10
pcs
Screws and Knots
P3.00
P30.00
TOTAL: P 3,646.00
TARGET MARKET OF THE STUDY
This research introduces a simple way to produce electricity by using the spinning
motion of an electric fan. Since fans are commonly used in homes, schools, offices, and other
spaces, this system can turn that constant motion into a source of power. It works on its own
while the fan is running, so users do not need to make changes or do anything extra. This makes
it easy to use and cost-efficient. The system helps reduce electricity waste, supports energysaving practices, and promotes the use of clean and sustainable power. Because of its simplicity
and usefulness, it can benefit many different types of users.
The potential target market includes:
1. Homeowners – Particularly those in warm climates who rely on fans regularly for
cooling.
2. Small Offices and Stores – Seeking affordable and simple solutions to lower electricity
consumption.
3. Rural Communities – Where access to reliable electricity may be limited or unstable.
4. Educational Institutions – For both teaching renewable energy and reducing heat in
classrooms by improving fan efficiency, helping to lower cooling costs and enhance
comfort.
5. Hospitality Industry (Hotels, Hostels, Resorts) – Interested in reducing their carbon
footprint and energy costs by implementing eco-friendly technologies.
POLYTECHNIC UNIVERSITY OF THE PHILIPPINES
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