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'If each of us becomes aware of our own power when it comes to energy efficiency and use it properly, we can collectively make a big difference to ourselves, our pockets and to the environment.' (Sustainable Energy Authority of Ireland) (i) Discuss four factors that should be considered when choosing a heating system for a new house - Leaving Cert Home Economics - Question 1(a) - 2012
Question 1(a)
'If each of us becomes aware of our own power when it comes to energy efficiency and use it properly, we can collectively make a big difference to ourselves, our poc... show full transcript
Worked Solution & Example Answer:'If each of us becomes aware of our own power when it comes to energy efficiency and use it properly, we can collectively make a big difference to ourselves, our pockets and to the environment.' (Sustainable Energy Authority of Ireland) (i) Discuss four factors that should be considered when choosing a heating system for a new house - Leaving Cert Home Economics - Question 1(a) - 2012
Step 1
Discuss four factors that should be considered when choosing a heating system for a new house.
Answer
When selecting a heating system for a new house, several key factors must be considered:
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Cost:
- Installation and running costs are crucial, as they affect long-term affordability. This includes the cost of necessary components and ongoing energy expenses.
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Safety:
- The safety of the heating system is a priority. This involves ensuring it meets building regulations and does not pose any hazards, such as carbon monoxide emissions.
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Space and Heating Requirements:
- Assessing the required heating output (measured in BTUs) is essential to ensure adequate warmth throughout the space. Additionally, physical space constraints must be accounted for when installing the system.
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Environmental Impact:
- Considering the environmental footprint of the heating system is increasingly important. Systems that rely on renewable energy sources, such as solar panels, reduce the impact on the environment compared to fossil fuels.
Step 2
Describe one type of central heating system suitable for a family home and include reference to: fuel/energy source.
Answer
A suitable central heating system for a family home is the wet system, which typically utilizes a boiler that heats water.
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Fuel/Energy Source:
The wet system can operate on various fuel types, including oil, gas, or renewable sources like solar energy. Oil and gas boilers are common, providing efficient heating by burning fuel to generate heat. -
Working Principle to Include Methods of Heat Transfer:
The system uses water, which expands when heated. The hot water is circulated through pipes to radiators located in different rooms, transferring heat by convection. Radiators heat the air in the rooms, creating a warm environment. -
Impact on the Environment:
Although wet systems can be efficient, they can contribute to environmental issues through CO2 emissions when using fossil fuels. This impact can be mitigated by employing solar energy systems that reduce reliance on traditional fuels.
Step 3
Explain, giving examples, how levels of thermal comfort in the home can be controlled.
Answer
Levels of thermal comfort in a home can be managed through various strategies:
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Thermostats:
Utilizing programmable thermostats can effectively maintain a consistent temperature. Homeowners can set the thermostat to adjust the temperature based on their schedule, ensuring warmth when it’s needed most. -
Zoning:
Implementing a zoned system allows control over different areas of the home. Specific rooms can be heated to varying temperatures depending on their usage, enhancing comfort while saving energy. -
Insulation:
Proper insulation in walls, attics, and basements minimizes heat loss, allowing homes to retain warmth during colder months. This contributes significantly to maintaining a comfortable temperature. -
Ventilation:
Ensuring adequate ventilation can help avoid overheating. Opening windows for cross-ventilation or using ceiling fans to circulate air maintains a temperate climate indoors.