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Energy efficiency in housing.

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INTRODUCTION: Energy efficiency is the percentage of total energy input into an energy conversion device or system that does work and is not converted to low quality useless heat. Being energy efficient helps the environment and helps reduce our reliability on renewable resources. Energy efficiency uses less energy and does more useful work. Although energy efficient devices costs more than least efficient devices but this pays off in the long term. Beginning with the most common thing in houses, lights, we can use fluorescent lights instead of incandescent lights which waste 95% of the energy input. Adding insulation to the house and windows can very much reduce waste energy. Another step to energy efficiency in houses is to plug leaks. People should also switch off electric appliances, lights, etc. when they are not using them. Using tankless water heaters, which only heat when needed, saves a lot more energy than conventional heaters, which heat water all day. As there is a huge pressure on renewable resources and the risk of losing them, there are other alternative resources which need to be used instead. Those alternative resources are renewable resources, which are solar energy, hydro power, win energy, energy from biomass, and geothermal energy. Energy derived from the sun s called solar energy. Solar energy can be collected to produce high-temperature heat and electricity basically by a solar power tower and a solar thermal plant, where huge solar panels collect the sun's where huge solar panels collect the sun's thus transforming the radiant energy into electricity. ...read more.


The other type is active solar house, where solar collectors absorb solar energy and a fan or pump supplies part of a building's space-heating or water-heating needs. <<Ali's part>> The group has chosen a strawbale type of house. A strawbale house involves all of the basic needs of a house, is environmentally friendly and has a higher insulation value that waste less energy. Unsurprisingly it has many advantages that include being resistant to fires especially if it's built in a very dry and hot climate, straw has a unique appeal, is easily available, sound proof, cheap, and is a good insulator. It's also 100% renewable instead of being burned creating pollution. BODY: <<Abe's part>> Energy efficient appliances house will use/products/costs: The house will include several different energy efficient appliances. First of all is the use of wind energy. A wind tower is set up 30 meters across from the house and its height is more than the house by 30 meters. The Sun heats our atmosphere unevenly, so some patches become warmer than others. These warm patches of air rise, other air blows in to replace them - and we feel a wind blowing. The more towers, the more wind, and the larger the propellors, the more cheap electricity we can make. The transmission lines will transport this electricity into the batteries that then will heat the house and the tankless water heater.(1) ...read more.


Greenhouse gases are being let into the air very much as more and more fossil fuels are being burned. These gases pollute the air and thus lead to global warming. Global warming is becoming one of the greatest issues in the world today. With the greenhouse gases being let into the air more and more day by day, global warming increases. Fossils are being burned in a fast rate and will end one day, as they are nonrenewable resources. If we, humans, start being energy efficient we can all reduce rely on fossil fuels, and thus reduce the greenhouse gases, and thus global warming. There are many alternative renewable resources we can use instead of fossil fuels. We have solar energy, wind energy, hydro power, geothermal energy, and energy from biomass. Energy efficient houses are being built using energy from renewable resources and having energy efficient appliances like fluorescent lights, tankless water heaters etc. Although these houses cost 5-10% more than convectional houses, but the cost pays back in 5-7 years. Solar energy can be used easily in almost every part of the world, as the sun shines everywhere. There are many places which have good winds for using wind energy or have big rivers which can be easily reliable for hydro power. We have all these renewable resources and we should start using them for our future generations. As being energy efficient helps our environment, we should all begin to be so. Being energy efficient doesn't require energy from us but instead stop wasting energy from the world. ...read more.

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