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My Home Energy Audit and suggestions for a more Enviromentally friendly home

What you can do to make your house more environmentally friendly

James K-D

on 10 January 2013

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Transcript of My Home Energy Audit and suggestions for a more Enviromentally friendly home

My Home energy and a look at Sustainable home improvement How Environmentally friendly is my home what are the causes for energy loss and how can the overall energy efficiency be improved Aspects of the Home to Consider: Energy Water Heating and Insulation Energy Reasons? Energy used for operating appliance and lights makes up 30% of the annual energy use for a property costing the owner over 830 pounds per annum Lighting My Home Lighting My house has around 60 led 20 watt bulbs, up to half of these are movement sensitive limiting the energy usage massively. The lights are also insulated therefore not allowing the little heat they produce to pass into the attic or ceiling. OR Appliances Energy Efficiency Easy changes every one an make to save energy and money. Use low wattage bulbs Motion-activated light switches Make sure lights are turned off when not needed. Water Bathroom Reducing shower by 5 min will save you 10 gallons per day (3,650 gal per year) We have Installed efficient low flow shower heads which enable the same length of shower but using less water in the process Kitchen About 95% of the water that gets delivered to houses goes down the drain (3% used as drinking water) Capture vegetable rinse water on a cold-water catcher and use it in your garden.
Many new technologies are available which recycle the water used in the home this serves as both cost effective and environmentally friendly Heating water Many old water heaters are badly insulated. This leads to inefficiency and huge energy loss into surrounding areas Rain barrel Radiators Radiators heat the air surrounding them this then travels up to the top less dense air at the top of the room in a convection current it then travels in a circular motion through less dense air until it is once again heated by the radiator and the process starts again. Radiators however are very inefficient as they do not keep the whole room at a constant temperature as the hottest air will be closest to the radiator. Also they are astectically less pleasing Alternatives Insulation Double glazed windows Other ways to combat Heat Loss Solar Electric Power Solar energy creates Clean, renewable energy and eliminates electricity bills Sunlight hits cells, knocks electrons loose from their atoms, They flow through the cell, and generate electricity Big windows on sunny side of building allow sunlight to heat absorbent materials on floor and walls Surfaces release heat at night to keep building warm We do not use these at home as it is not a practical application for the western climate Uses the earth's constant temperature (55 degrees) as a baseline for heating and cooling the Home.
This is a great solution as it is inexpensive to install and provides those in more temperate climates an alternative similar to solar panels. James Kressinger-Dunn Thank you!! What is A hOME eNERGY aUDIT? A Home energy audit is carried out by professionals, and measures the thermal output of the house the number and wattage of the lights and appliances the efficiency of the insulation and the houses ability to retain temperatures in both the summer and winter months . Taking all these factors into account a rating is then achieved which gives the house an overall energy efficiency rating this becomes extremely useful when selling the property and can even increase the value as the prospective buyer sees that the living costs to them would be much lower than a average house. Appliances even on standby use a massive amount of electricity. And combined with lighting equate to 30% of the total electricity bill. The only way to limit the amount of energy used by these appliances is to turn them off at the wall or purchase energy efficient appliances which use less energy Geothermal Heating How is Heat energy lost in a water tank? The warmer molecules in the tank want to move out into the colder air via conduction air if the tank is well insulated this does not happen as little of the colder air comes into contact with the warmer air inside and little heat energy is lost. However if the tank is badly insulated then a large amount will be lost this leads to more energy being needed to maintain the temperature of the water. This image is of a well insulated tank it shows up as cold this means that most of the heat energy is being successfully retained inside Under floor heating is becoming a very popular alternative to radiators, instead of creating one large convection currents many are created this ensures that much of the room is kept at the same temperature.
In my house we have underfloor heating it uses less energy and creates more space Insulation is extremely important in the house at it allows the house to retain heat and coolness for longer n limiting heat loss by conduction this diagram shows how much heat is lost from different areas in the house.
The main materials used for insulation are fiberglass batting, but other alternatives include hay newspaper and rock wool. The colour of the house: white reflects infra red radiation black is heat absorbent. The flooring. Tiles are generally colder as they are good conductors of heat energy meaning the energy is rapidly transferred from the object to the tiles. Carpet on the other hand is a great insulator. In my house we have a mixture of wood in the living area and tiles in bathroom. With carpet in the bedrooms which we want to be warmer. Alternative heating solutions Geothermal Solar Heating Wood Burning Oil Alternative Insulation options Wool Hay Rock Fibre Foam
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