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significance of energy in daily living-why should energy concern us?
significance of energy in daily living-why should energy concern us?
Energy is a fundamental part in our life. Energy is always associated with the fuel needed for transportation and heating, with electricity for lights and appliances, and with the foods we consume.
Energy powers machines and moves our bodies. It is exchanged in every interaction. Energy is the unseen force necessary for growth, development, and change.
As population grows, worldwide demand for energy and concerning environmental impact also increases. If the problems on energy sustainability remain unsolved, it might be expected that an energy crisis will happen in the near future.
Shown in the left figure, is a bar graph showing developed countries' increasing dependencies on oil sector due to global shifting towards modern technologies.
energy units and energy transfer
energy units and energy transfer
Energy is the capacity for doing work. Work can be described by the product of force and the displacement of an object caused by that force. Its SI unit is the newton-meter (N-m) or Joule (J) and its U.S. customary unit is the foot-pound (ft-lb).
The fundamental concepts of energy, work and power is always associated with the first law of thermodynamics to analyze energy flows, and second law of thermodynamics that deals how waste heat from inefficiency of work affects the environment.
Energy can be transferred from one place or object to another via three ways. These are conduction, convection, and radiation.
Energy transfer via conduction is usually associated with solids, as one molecule vibrates the next in the lattice. The rate of energy transfer in a solid is proportional to the thermal conductivity of the material.
Convective energy transfer occurs when a fluid at one temperature comes in contact with a substance at another temperature. It is the transfer of energy between a surface and a moving fluid (a gas or a liquid), or energy transfer by the movement of molecules from one region in a fluid to another region because of movement of the heated fluid.
Radiation energy transfer involves movement of energy by electromagnetic waves. It does not require a molecular medium (e.g., fluid or solid) for transfer to occur.
renewable energy and re technologies
renewable energy and re technologies
Renewable energy resources are energy resources produced from natural sources that can be utilized endlessly and cannot be exhausted. These energy resources are often referred to as “clean energy” because they can always be replenished.
Renewable technologies are clean sources of energy that can provide maximum sustainable energy services for it minimizes environmental impact unlike non-renewable energy resources and has a potential significant impact in world’s energy demand in the near future.
Shown in the right figure are some of the few renewable energy resources currently used by people nowadays.
energy conservation
energy conservation
Listed below are ways on how I’d be able to save energy at home especially during this pandemic:
1.Using energy-efficient light bulbs – Using LED lights, halogen bulbs, and indoor solar lights instead of fluorescent lights greatly help in reducing electricity consumption.
2. Changing behavior inside home – Simple acts or habits such as turning off lights and unplugging unused electric appliances when it is not needed significantly reduces energy consumption.
3. Using energy-efficient appliances – Although some of energy efficient appliances are a bit costly, their operating costs is relatively lower compared to conventional appliances.
4. Setting up energy efficient windows – Reading articles on proper lighting and ventilation allowed me to grasp some knowledge on how inadequate placement of windows enormously wastes some energy that can be used. Proper installation of windows and orientation of window openings help in securing maximum ventilation inside homes.
5. Upgrading VAC systems – For VAC appliances to be more energy-efficient, upgrading VAC systems will save me a significant amount of money instead of spending too much money for energy bills due to poor ventilation and air-conditioning.
6. Home Insulation – Aside from VAC systems, proper insulation in walls, floors, attics, etc. also helps in lowering expenses for it restricts outside heat to enter living spaces inside rooms. Home insulation creates a barrier between outside and inside the house.
7. Regular maintenance of Airconditioners – Cleaning filters and condensers of Airconditioning unit saves a significant amount of money.
8.Cleaning the fridge and avoiding opening refrigerator doors for longer duration – Opening refrigerator doors often contribute to high electricity consumption.
energy management and audits
energy management and audits
Energy management refers to the process of conserving, controlling, and reducing the overall energy consumption in a single household or building. It involves collecting data on energy consumption, finding ways on how to save energy (which includes estimating the amount of energy that could be saved), investigating energy savings, and using progress tracker in analyzing meter data to check if energy-saving efforts successfully worked or not.
Energy audit is the evaluation of energy consumption in a particular household/building which helps in providing the best recommendation on how to improve energy use.
classwork assignment #2 part 1 and 2
classwork assignment #2 part 1 and 2
Classwork Assignment 2 Module 2_BARTOLOME.pdfClasswork Assignment 1 Module 2_BARTOLOME.pdfreflection:
reflection:
The second module tackled the significance of energy (especially renewable energy) nowadays in our daily living and why do we need to conserve energy to meet our future demands. After answering the classwork assignment 2, I realized that there are so many reasons on why we should conserve energy daily - it is because the population is growing unprecedentedly. As humans are continously exploiting all sources of energy for so long, the future generation is going to suffer in its lack. wable energy alternatives to meet our energy demands. Understanding the course topic helped to grasp lots of takeaways from the module. I became aware of how much energy that I am consuming in a day and know how can I reduce that amount. Simple methods such as cutting down daily usage of energy based equipment, applying the notion of “Eco Hour”, reducing my carbon footprint and saving energy by commuting or riding a bicycle instead of riding a private vehicle would be of great help in achieving energy sustainability.
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