Heating and cooling Your. Home. Very little energy is needed to make a well designed house comfortable. Appropriate insulation, which is essential for a comfortable house, combined with passive solar design and a draught proofed building, can create low or even no energy requirements for heating and cooling see Passive solar heating Insulation. Highly efficient homes with no heating or cooling input are possible across much of Australia. Even for existing homes there are many ways to reduce energy bills, improve comfort and help the environment. The principles of thermal comfort and the importance of air movement, humidity and radiant heat are explained in the section Passive design. Projected average home energy use in 2. Household energy useSource DEWHA. Heating and cooling. Water heating. 21. Appliances and equipment including refrigeration and cooking. Lighting. 6Never use mechanical heating and cooling as a substitute for good design. However, for existing homes, installation of high efficiency heating and cooling technologies, with modest building improvements and behaviour change, may be cheaper options to reduce energy bills and greenhouse gas emissions than major home renovations. Your money is better invested in an energy efficient building than spent on heating and cooling. At 4. 0 of household energy use, heating and cooling are together the largest energy user in the average Australian home DEWHA 2. However, since most home heating uses gas, heating is responsible for a lower proportion of energy bills and greenhouse gas emissions than its share of energy use suggests. Heating. Use passive design principles to increase comfort and reduce the need for heating. Insulate the roof, walls and floor, seal off draughts, let in winter sun and draw curtains at night. Zone your existing or new home and only heat the rooms you are using use doors to prevent heat escaping into unused rooms see Passive design. The two main types of heating are radiant and convective. Radiant heaters predominantly heat people and objects by direct radiation of heat. Convective heaters warm and circulate the air in a room. Other forms of heating, such as heated floors, also heat by conduction through direct contact. Different forms of heating are best in different circumstances In larger rooms with high ceilings, a combination of radiant and convective heating is best. In small rooms, space convective heating is effective. In larger draughty rooms or bathrooms, radiant heating works best. Heaters produce air movement as hot air rises and then falls as it cools. All heaters produce air movement as the hot air rises from the heater to the ceiling. Air is cooled when in contact with windows and poorly insulated walls and ceilings. The cooled air falls and is drawn back along the floor to the heater. Sitting in draughts created by air movement can make you feel much colder. Minimise draughts from windows and use heavy curtains with snug pelmets or other ways of preventing air flow through gaps at the top and sides of window coverings to stop convection and radiant heat loss. Always consider appropriate clothing to stay warm and reduce the effects of draughts. Position your furniture to deflect or avoid draughts. Position your heater and furniture to deflect and avoid draughts. Www. naturesflame. co. nz ECOCHOICE PS35 November 2011 ners anual Installation and Operation 1 Check building codes prior to installation. Installation MUST. View and Download Regency Fireplace Products F43NG owners and installation manual online. Freestanding Gas Stove. F43NG Stove pdf manual download. 2. THERMALUX SLOW COMBUSTION COOKING STOVES BOILERS ALL MODELS INSTALLATION INSTRUCTIONS All installations must comply with local building. Choosing a correctly sized heater and cooler is very important. Do not install an oversized heater, as you will be wasting money on buying a bigger heater than you need and wasting energymoney in operating it. Expert advice helps make sure you are choosing a correctly sized heater. An oversized heater wastes money and energy. Energy choices. Gas heaters and efficient reverse cycle air conditioners or heat pumps produce only one third the greenhouse gas emissions of standard electric heaters. The most efficient 56 star reverse cycle units actually produce less than one fifth of the emissions of conventional electric heaters. Gas heaters and reverse cycle air conditioners have Energy Rating Labels to help you choose the most efficient model. Please note, the gas Energy Rating Label is industry led and not monitored by government. Wood can be an excellent fuel because it is a renewable resource if sustainably harvested. However, do not use wood fired heaters in urban areas because of the air pollution they create, and the emissions associated with transporting firewood to urban areas. About 1. 0 of homes use wood for heating but the wood is often obtained from unsustainable sources. Use only sustainably harvested wood to avoid habitat destruction and rare species extinction. Do not use treated timbers, which may give off toxic pollutants when burned. Burn wood only in airtight, slow combustion heaters. They have the highest energy efficiency of wood heaters, and use the least wood and cost the least to run. Careful operation of wood heaters is also critical to limiting air pollution. Use seasoned wood and dont add large loads of wood just before turning the heater right down. Do not use illegally modified heaters, adjusted to burn overnight. Central vs space heating. Choosing whether to heat your whole house or only the required rooms or spaces has a major influence on the greenhouse impact of your home. In a house with central heating, the greenhouse emissions and costs of running it are usually higher than running efficient space heating. Central heating can often heat a whole house whether individual rooms are occupied or not. Space heaters usually only heat the room or area where the heater is installed. For an energy efficient house, use space heating only in rooms that require heating or use a zoned central heater to reduce running costs. Heat only the rooms that are being used. Answer the following questions before buying a heater Does the room need to be heated or will eliminating cold draughts and improving insulation be enough How many rooms need to be heated How big are they How often and for how long will heating be required The Choice online guide www. Seek expert advice to find a system most suited for your application. Central heating. Central heating usually uses more energy than space heating as more of the house tends to be heated. However, an energy efficient house with central heating may use less energy than an inefficient house with space heating. Several types of central heating are available. Many central heaters have high energy losses from the heat distribution systems, usually through ducts or hot water pipes. They should be as short as possible and well insulated at least R1. Fans and pumps can also be costly to run. When heating requirements are low, distribution losses can be the main contributor to heating costs. In well insulated houses with solar gain to some rooms, a central thermostat may not provide comfort throughout some rooms may have higher heat losses and cool down faster than the rest of the house. Ducted air. In ducted systems, hot air is circulated through roof or underfloor ducts, supplying convective heat. Gas or a reverse cycle air conditioner can be the heat source. Design the system so that the extent of the area heated can be controlled and include zoning to allow for shutting off heating to unoccupied areas. Ducted systems should be designed and installed by accredited experts. Ensure the ducted system is sized for the house. New, energy efficient houses that meet the requirements of the Building Code of Australia BCA require less heating and smaller capacity heating equipment. Ducts should be the correct size and have adjustable outlets registers. Ducts need to be larger if also used for cooling. Insulate ducts to at least R1. InsulationFloor outlets are often better than ceiling outlets for heating, as warm air naturally rises and they deliver heat to where it is most needed. Well designed ceiling outlets can work well particularly when rooms are sealed from draughts to the outdoors. Cold air entering under outside facing doors can form a layer above the floor and stop the less dense warm air from ceiling vents heating the air near the floor, creating a cold feetwarm head problem. A return air path from every outlet back to the central system is very important. Without it the warm air escapes and the system sucks cold air in, dramatically reducing its effectiveness. In each room that has a duct outlet installed, a gap under the door between the room and the central return air inlet creates a return path.
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