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  • Earthling 4:42 am on December 18, 2018 Permalink | Reply
    Tags: elements of a green home, elements of an environmentally friendly home, environmentally friendly house, green home, living in harmony with mother nature   

    The Environmentally Friendly House 

     

    By Carroll Colette J. Yorgey

    An environmentally-friendly house blends into the environment through design, style, and looks; and incorporates all elements of good green technology. You can remodel your current home to make it more environmentally friendly or you can start from scratch and build a completely environmentally friendly home.

    The environmentally-friendly house will use green technology in the following building areas:

    1) Windows

    2) Heat

    3) Insulation

    4) Roofs

    5) Energy

    6) Building materials

    7) Water

    8) Landscaping

    9) Construction

    10) Appliances

    11) The cellar

    Windows

    Windows should be chosen for their heat and cold retaining elements. They should be also placed in ways that provide passive solar energy.

    Heat

    Passive solar energy and solar panels should be used for heating the home. This is the greenest technology
    available for heating the home. Heat pumps are also good for heating and cooling the environmentally friendly home.

    Insulation

    Insulation provides for easier ways to cool and heat the home. Insulation should be made of non-chemical
    materials.

    Roofs

    Roofs should be slanted to provide easier snow and water run-off. They should be built according to passive solar principles in order to bring in the greatest amount of natural sunlight for solar energy.

    Energy

    The main energy source should be the sun and passive solar energy technology should be applied to provide for the greatest amount of natural, green energy available. You can back this up with your own personal windmill.

    Building Materials

    All building materials should be environmentally-friendly. Log homes are considered the most environmentally-friendly since if they are built properly they will not use chemicals or sealants that
    emit dangerous fumes into the air. They also blend well into the natural environment.

    However there should be one consideration when building a log home – make sure the trees you are using are replanted so that there is a replacement of trees to keep up the carbon dioxide removal and stop any sort of erosion caused by the removal of trees.

    Water

    Water should be supplied by a well and backed up by a cistern. Rainwater can provide a percentage of water used in gardening, washing of clothes, and other water chores. Water can be heated through the use of a solar collector.

    Landscaping

    Landscaping for your new environmentally-friendly home is extremely important. Trees should be placed in the proper location to provide shade in the summer and reduce air cooling costs. Also, the correct trees should be planted — those that use up the most carbon dioxide.

    Also landscaping should provide for the garden which will be the source of home-grown organic foods. Each yard could consist of three fruit trees and a few pine trees. The fruit trees will provide organic fruits for the winter. The pine trees will suck up the most carbon dioxide and refresh the air.

    Proper mulching and composting of the soil should also be an option and when building the environmentally-friendly home you can immediately include your plans for the garden. Grass is not necessary and instead the lawn should be planted with plants that attract good insects such as bees and butterflies. If planted properly you won’t have to be mowing lawns or spraying them with chemicals.

    Construction

    The environmentally-friendly house should be constructed by an able construction crew that is experienced at building an environmentally friendly house. Passive solar energy techniques should be applied throughout the building of the house and only those experienced in this type of building should be hired.

    Before even beginning construction the house should be designed to complete passive solar energy
    specifications by a trained passive solar energy architect. Designing this type of house is technologically very precise and based on measurements that embrace the positions of the sun during seasons and times of the day. It is not unlike charting the course of the seas for the captain of a ship.

    Appliances

    All appliances should be energy efficient. They should be energy star appliances or appliances powered
    totally by solar energy.

    The Cellar

    The root cellar should be part of every environmentally-friendly house. This can be built within the house when building the foundation or it can be built a distance from the house. It will provide a natural cool place for the harvesting of your organic fruits and vegetables. Cool pantries should also be built into the
    environmentally friendly house.

    In conclusion, the environmentally-friendly house is an artistic and technological achievement. If you are good at building and construction and feel you can tackle building an environmentally-friendly house on
    your own, this is the best way to go in the long run. You will save money and also save the environment.

    Copyright © 2018 Carroll Colette J. Yorgey. Edited and used with her permission. Image added by Zebulon Goertzel.

     
  • Earthling 1:16 pm on December 6, 2018 Permalink | Reply
    Tags: Algeria, Algerian study, ecological construction, ecological home, ecological house, energy efficiency, green home, green living, greenhouse emissions from a home   

    The environmental impact of an ecological house 

    Here are translated excerpts from an Algerian study that compared the environmental efficiency of the same house before and after it was rebuilt with ecological materials in place of conventional ones.

     

    From the Revue des Energies Renouvelables [Renewable Energy Journal] Vol. 13 N°4 (2010) 545 – 559

    Abu Bakr Barnes University, B.P. 119, Tlemcen, Algeria (received on September 3, 2010 – accepted December 26, 2010)

     

    Summary: An ecological house is more of a concept than a specifically defined kind of house. The idea is to combine various types of heating, ventilation and power supply for appliances to massively reduce energy consumption and cause an exponential decrease in CO2 emissions. This paper covers a study of the effects of an ecological house on the environment. To achieve this review, we first did a comprehensive study of the energy balance, from which we were able to determine, on the one hand, the usage times of each utility in the house, and thus a record of the CO2 emissions, and on the other hand, the carbon assessment in primary energy, as well as the lifecycle of the insulating materials. The results obtained were compared with the results from the same house built with non-insulating materials such as brick, concrete, etc. The comparison shows a significant difference in terms of energy, economics and the environment, which makes us very optimistic about the effectiveness of ecological houses.

     

    The ever surfacing reports evaluating and measuring greenhouse gases in the atmosphere are becoming increasingly alarming. In fact, according to a study published in the “Proceedings of the National Academy of Science” and carried out by M. Raupach for the Commonwealth Scientific and Industrial Research Organisation’s Marine and Atmospheric Research and Global Carbon Project, the emission of greenhouse gases, which is responsible for global warming, is always rising. If measures are not taken to limit its rise, global warming will have drastic effects.

    As we see it, our obligation to respect our environment is greater than ever, and every individual must find a balanced solution that involves both comfort and a unique contribution to sustainable development.

    We’ll speak of ecological houses as being those in which two criteria are met:

    1. At least 80% of the house’s energy is more economical than the average, although this can be taken much further, to the point of no consumption, or even negative consumption (net production of energy).
    2. The usage of ecological, healthy and durable materials.

    The main requirements for an ecological house are:

    • Alliance between the land and local climate
    • Orientation: ability to make use of the sun
    • Carbon footprint: hunt down hidden emissions
    • Thermal insulation: absolutely necessary
    • Walls: healthy, natural materials
    • Ventilation: air sufficiently refreshed
    • Favor renewable energies for heating and air conditioning
    • Create a healthy and comfortable environment for the inhabitants

    The aim of our work is to make an environmental comparison between an existing house in Tlemcen, Algeria, built with conventional materials (concrete, bricks, etc.), and the same house built with ecological materials (cork, hemp, wood, etc.), to get a clear idea of the impact of such a house on the environment.

    The setting is in western Algeria in the Tlemcen region, Latitude 34°52’01” North, Longitude 1°28’01” West, at an altitude of 850 m, in a temperate climate.

    Energy efficiency will the major challenge of the years to come, because this issue inherently contains the issues of greenhouse gas emissions and embodied energy, that is to say the energy needed to manufacture materials and systems (heating and ventilation). The question of energy efficiency represents the essence of environmental performance.

    View of the House (East side)

    The area of the house is 100 m2, and it has three floors. The first floor features a hall, a garage, a living room and a bathroom; on the second floor, there is a living room, a kitchen, a small lounge and bathrooms; on the third floor, three bedrooms, a hall and a bathroom. The area of each room is shown in the below table.

    The architecture, orientation, compactness, and surrounding plants help the house capture solar rays and maximally benefit from solar gain. The living space is oriented from the southeast to the southwest, which is precisely the principle of bioclimatic architecture required for an ecological design. The conventional house was originally built with brick and concrete, with windows of wood and doors of wrought iron.”

    Types of materials used in the ecological house

    For the insulation of the house, we opted for:

    • Thick mineral-wool board (140 mm thickness) for the floor and foundations.
    • Flexible wood-wool board (220 mm thickness) under the roof.
    • Three hundred (300) mm of cellulose wadding for the ceiling and 200 mm for the floors of the rooms.
    • For the walls, a wood framework (U = 0.16 W/m2) with a sound-insulation level greater than 46 db. A double glazing of 20 mm with an interior volume filled with gas (U = 1.1) and a sound-insulation level greater than 31 db.

    In our study of the environmental performance, the difference between CO2 emissions from House1 and House2 is clear. This is difference is mainly due to the design materials (material types, primary energy, transportation of materials, life cycle, reduction of heating and air conditioning through better insulation).

    (The Pink is CO2 emissions due to natural gas. The Grey is CO2 emissions due to electricity. The ecological house is on the right.)

    CONCLUSION

    We can draw a number of conclusions from this first environmental comparison, which can guide our actions for the protection and promotion of the environment.

    An ecological house cannot be entirely perfect for those who are seeking maximum comfort. Nevertheless, we were able to find materials that are largely compatible and at the same time help to reduce energy costs.

    These houses require a higher cost to build. Over time, these buildings will need less energy for heating, lighting, etc. This means less costs overall compared to other buildings.

    Ecological construction can meet the needs of current generations without compromising the ability of future generation to meet theirs, thus contributing to sustainable development.

    Translated by Zebulon Goertzel

     
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