Measures of Dispersion and Variability: Range, QD, AD and SD
aknoor presentation.pptx lt switch gear.
1. Department :-Mechanical Engineering
Name:- Sk Aknoor Rahaman
Roll Number :- 10200723038
Registration No :-231020110245
Topic :-Elementary Calculations For Energy
Consumption
Year :- 1st
Semester :-First
Session :-2023-2024
Kalyani
Government
Engineering
College
2. Introduction: LT Switchgear
Introduction
LT switchgear, or low voltage switchgear, is an
essential Component of electrical Systems. It helps
control and Protect the flow of electricity in buildings
and industrial Facilities.
Working Principle
LT Switchgear works by monitoring and
controlling the flow of low voltage
power , ensure that it goes to the right
place and
Protecting against overloads and short
circuits.
Importance
It plays a crucial role in ensuring the
safety
And reliability of electrical
system(MCV), preventing damage to
equipment and
Ensuring a steady supply of power.
Application
1.Industrial
2.Commercial
3.Residential
3. Elementary Calculations for Energy
Consumption
1 Explanation
Understand the basics of elementary calculations used to determine energy
consumption.
2 Application
Learn how to apply elementary calculations to evaluate energy usage in
various scenarios.
3 Examples
Explore real-life examples showcasing elementary calculations for energy
consumption.
4. Working
Principle
The working principle involves using simple mathematical formulas to calculate energy consumption. This typically
includes multiplying the power of a device (in watts) by the time it is used (in hours) to determine the energy
consumption in watt-hours or kilowatts-hours. For example:
The working principle of energy consumption is based on the idea that energy is the product of power and time.
Power is the rate of doing work or transferring energy, and it is measured in watts. Time is the duration of the process
or activity, and it is measured in seconds, minutes, or hours. Therefore, the formula of energy consumption is given by:
E=P×t
where E is the energy consumption in joules or kilowatt-hours, P is the power in watts, and t is the time in seconds,
minutes, or hours. This formula can be applied to any system or device that uses or generates power, such as a light
bulb, a fan, a computer, a car, or a power plant. For example, to calculate the energy consumption of a 60-watt light
bulb that is on for 5 hours, we can use the formula as follows:
60×5=300 watt-hours.E=60×5=300 watt-hours
To convert watt-hours to kilowatt-hours, we divide by 1000, so the energy consumption of the light bulb is 0.3
kilowatt-hours.
5. In this section, you should explain the function and purpose of energy consumption calculations, and how they are
used to evaluate and compare different systems and devices. You should also mention some of the factors that
affect the energy consumption of different systems and devices, such as the type, size, design, efficiency, and
operating conditions. For Example:-
The function of energy consumption calculations is to estimate the amount of energy or power required or
consumed by different systems and devices, and to assess their efficiency, performance, and environmental impact.
Energy consumption calculations are used to compare and contrast different systems and devices based on their
energy usage and output, and to identify the best options for saving energy and reducing emissions. Some of the
factors that influence the energy consumption of different systems and devices are the type, size, design, efficiency,
and operating conditions of the system or device. For example, the energy consumption of a laptop depends on the
type and size of the processor, the screen, the battery, and the software, as well as the brightness, volume, and
usage patterns of the user. Similarly, the energy consumption of a car depends on the type and size of the engine,
the fuel, the transmission, and the tires, as well as the speed, distance, and driving style of the driver.
6. Applications
1. Household Energy Management:
• Calculating appliance energy use: Determine the energy consumption of appliances (e.g., refrigerators, lights, air conditioners)
using their power ratings and operating times. This helps identify energy-intensive appliances and target energy-saving
measures.
• Tracking energy bills: Monitor energy usage and costs over time to understand patterns and make informed decisions about
energy-saving strategies.
2. Energy Audits and Efficiency Programs:
• Benchmarking energy performance: Compare energy consumption of buildings or equipment to industry standards or similar
facilities to identify potential savings.
• Estimating energy savings from efficiency measures: Calculate potential energy and cost savings from implementing energy-
efficient technologies or practices.
3. Industrial and Commercial Energy Management:
• Monitoring energy consumption of processes and equipment: Track energy use in manufacturing processes, data centers, or
commercial buildings to identify areas for optimization.
• Optimizing production schedules and equipment usage: Adjust operations to reduce energy consumption without compromising
productivity.
7. Applications
4. Energy Education and Awareness:
• Teaching basic energy concepts: Introduce students to energy units, calculations, and the impact of energy choices on the
environment.
• Demonstrating energy conservation measures: Show the effectiveness of energy-saving practices through calculations and real-
world examples.
5. Personal Energy Footprint Assessment:
• Calculating individual or household energy use: Estimate the total energy consumption from various activities (e.g., transportation,
home energy use, food consumption) to understand personal impact and identify opportunities for reduction.
9. 1
Precision
Elementary calculations
may not provide precise
results due to
assumptions and
simplifications.
2 Complex Systems
These calculations may
not be suitable for highly
complex energy
systems.
3
External Factors
External factors like
weather and usage
patterns can affect the
accuracy of results.
Limitations of Elementary
Calculations
10. - May not account for all variables
affecting energy consumption,
such as standby power or varying
usage patterns.
- Relies on accurate input data for
power ratings and usage time.
- Provides a simple and effective way to
estimate energy usage.
- Helps in identifying energy-intensive
devices or systems.
- Enables comparison of energy
consumption between different devices or
over time.
11. Bibliography
Energy Management Handbook" by
Wayne C. Turner and Steve Doty
- "Energy: Management, Supply and
Conservation" by Clive Beggs
"
Recommended Reading
Suggest additional resources for those
interested in deepening their
understanding of LT switchgear and
energy consumption calculations.
