Introduction
This report is based on the investigation and research on reducing electricity consumption of certain appliances and to improve energy usage at home. The demand for electricity in South Africa is increasing and it is exceeding electricity supply, research has shown that households contribute 15% to the countries total electricity consumption [1]. Efficient energy usage is very critical; electricity can be used very inefficiently in households during peak load times. In order to tackle this problem the country is facing, this report will give a brief analysis on the usage of domestic electrical appliances and the energy they consume and also identifying the household service using a large amount of electricity so that the service can be modified to reduce the energy usage by 30%. Electricity is high in demand during the peak time loads of 5 pm – 10 pm, and so this research will also focus on efficient electricity usage and how usage can be avoided during peak time loads.
Home Energy Audit
Electrical appliances
Electrical appliances Power ratings (kW) Running hours of appliances Time in a 24-hour day the appliance is mostly used Total Energy Consumption (kWh)
Refrigerator 0.45 8 hours 00:00 - 00:00 3.60
Microwave 0.90 ½ hour 07:00 - 09:00
18:00 - 21:00 0.45
Geyser (125 L) 2.00 12 hours 00:00 - 00:00 24.0
Stove 2.15 2 hours 17:00 - 22:00 4.30
Iron 1.00 ½ hour 06:00 - 08:00 0.50
Television 0.10 12 hours 08:00 - 22:00 1.20
Electric Kettle 1.50 ½ hour 06:00 - 20:00 0.75
Washing Machine 0.50 2 hour 07:00 - 10:00 1.00
Light Bulbs (5 bulbs) 0.020 each
0.020 x 5 = 0.10 8 hours 05:00 - 07:00
18:00 - 23:00 0.80
Cell phone Charger 0.010 1 hour 08:00 - 21:00 0.010
Electrical appliances in my home are the television, microwa...
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...for the design modifications to be implemented the hot water in the evening has to be used efficiently. The money saved per month will be able to cover the cost of installing the geyser blanket, pipe insulation and the automated timer and some extra money will be saved.
References
[1] Standby Power Consumption of Domestic Appliances. AJ Bredekamp, E-A Uken and L Borrill. Cape Town : Cape Peninsula University of Technology, 2006.
[2] Beute, Ernst-August Uken and N. The effective use of energy in westernised dwellings. s.l. : National Energy Council, 1991. p. 2.
[3] Pilbeam J, Fritz W and Smith C. Electrical Principles and Practice. Cape Town : s.n., 2008.
[4] Thomson, Robin. Measuring Residential Electricity Savings in South Africa after Solar or Heat Pump Installations – A simple, reliable method. s.l. : South Africa Environmental Issues & News, 14 February 2013.
2. The per capita rural consumption of household energy in some Bangladesh villages is 7 x 109 J/year.
Electricity is an interesting subject. There is so much you can learn from it, like how our lights turn on or how we make cell phones. This is all a mystery until we finally get a little bit of information in our brains. I've just read two articles, "Energy Story" and "Conducting solutions". I also watched a video called Hands-on Science with Squishy circuits. I learned so much valuable information from these resources.
...also save energy by using motion censoring for doors and sinks. The dining rooms and foyers should have dim-able light switches. Another way to save a lot of energy is to make a master switch at the front door that turns off all lights. That way you never leave a light on when you aren't at home. You should use natural gas cook tops and ovens to cut down on electricity.
Ross, J. P., & Meier, A. (2001). Whole-house measurements of standby power consumption. In Energy Efficiency in Household Appliances and Lighting (pp. 278-285). Springer Berlin Heidelberg.
Schindler, K. (2011). Home and Small Business Energy Efficiency-Certified Energy Manager & Auditor. Retrieved from http://www.kevinschindler.com/ index.php?option=com_content&view=article&id=39&Itemid=233
In this time of age, things have been consuming a lot of electricity compared to the old electrical appliances. People have been innovating different types of electrical appliances to reduce the amount of electricity used by the household such as air conditioner, refrigerator, television, and other appliances. One way of saving electricity which have been introduced in the new era is the Bio Robot Refrigerator introduced by a student from Russia, Yuriy Dmitriev, which is one of the 25 finalists in the Electrolux Design Lab competition. The competition is to challenge the entrants to redesign the modern appliances for the future.
Simpson, J.R. (2002, November). Energy and Buildings, Improved Estimates of tree-shade effects on residential energy use. ScienceDirect, 34(10), 1067–1076. Retrieved from http://www.sciencedirect.com/science/article/pii/S0378778802000282
US DOE Energy Efficiency and Renewable Energy. (2006, July 26). Retrieved July 26, 2006, from http://www.eere.energy.gov/
Electricity and electrical components are a major part of our lives today. Our lives pretty much come to a halt if there is a power outage or if our electrical devices stop working, sometimes we even start panicking because we are so dependent on these components that we cannot afford to lose them and their importance and use only increases as time passes. We all use these electrical devices and also electricity itself but most of us do not think about the math and physics that works behind all of these things.
When picking an energy resource for the topic of this paper, I bounced around a lot of ideas. Then it occurred to me that I should write about what I will be living with in about a month. My mom just finished designing and building our earthbag, solar, off-grid house, a four-year endeavor. I will soon live in a place powered by one of the most common alternative energy resources, solar energy, so I should learn more about it. At our new house, we have two stand alone pedestals with six 170W panels on each pedestal, making for a 2040W or 2kW solar system.
Bansal, Pradeep, Vineyard, Edward , Abdelaz, Omar, 2011, Advances in household appliances- A review, Applied Thermal Engineering 31, Issues 17-18: 3748-3760
"Water Heaters Decrease Your Expenses and Increase Satisfaction.Energytrust.org. Energy Trust of Oregon, n.d. Web. 13 Mar. 2014. .
Excess of energy produced this way can be sold back to the grid. • Using energy-efficient appliances and
Household energy conservation is a very practical and realistic approach to conserving energy within our society. US households consume a tremendous amount of natural gas as well as electric energy. It has been calculated that the amount of energy consumed within the US increased exponentially from about 1850 to 1975. If energy continued to increase at this rate, we would be experiencing severe energy shortages in our current society. Luckily, steps towards conservation, including various energy regulations, have curbed that growth somewhat, brining the predicted 160 Qbtu/yr for the year 2000 down to around 93.8 Qbtu/yr by the year 1996. However, household energy usage is still a major issue as households consume about 38% of the total consumed energy and contribute greatly to natural gas consumption and issues such as global warming. Therefore, it is important that people understand how we use energy in the household and what steps can be taken to conserve that energy.
Wind and solar power are small contributing factors to South Africa’s energy supply, but over the next few years they may become big major energy contributors because we have vast open areas of solar panels and the coastal areas can get really w...