Micro-Renewable Energy and Water Conservation Quiz

What is the main purpose of a differential temperature controller in a solar thermal hot water system?

• To control the temperature of the hot water tank
• To activate the circulating pump when there is enough solar energy available
• To measure the temperature of the water in the hot water tank
• To adjust the flow rate of the heat transfer fluid

Which of the following components is responsible for circulating the heat transfer fluid in a solar thermal hot water system?

• Solar collector
• Differential temperature controller
• Hot water storage cylinder
• Circulating pump

What is the main advantage of using an evacuated tube solar collector compared to a flat plate collector?

• Evacuated tube collectors are cheaper
• Evacuated tube collectors are more efficient at collecting solar energy
• Evacuated tube collectors are easier to install
• Evacuated tube collectors require less maintenance

What is the main purpose of a heat exchanger in a heat pump system?

• To extract heat from the ground or air and transfer it to the refrigerant
• To compress the refrigerant and increase its temperature
• To condense the refrigerant and transfer the heat to the heating system
• To expand the refrigerant and reduce its temperature

What is the main advantage of a ground source heat pump compared to an air source heat pump?

• Ground source heat pumps are more efficient
• Ground source heat pumps are cheaper to install
• Ground source heat pumps require less maintenance
• Ground source heat pumps can operate in colder climates

What is the main purpose of the Stirling engine in a micro-CHP system?

• To generate electricity using the heat from the boiler
• To pre-heat the return water before it enters the boiler
• To control the operation of the supplementary burner
• To increase the overall efficiency of the heating system

Which of the following is NOT a common use for harvested rainwater?

• Flushing toilets
• Watering the garden
• Washing clothes
• Drinking

What is the main reason that greywater cannot be stored for more than a few hours?

• Greywater contains soap and detergents that can damage the storage tank
• Greywater can become contaminated with bacteria and pathogens
• Greywater loses its temperature and becomes unsuitable for reuse
• Greywater contains high levels of calcium and minerals that can scale the pipework

Which of the following is NOT a suitable use for treated greywater?

• Flushing toilets
• Watering the garden
• Washing clothes
• Personal hygiene

Which building regulation in the UK specifically addresses the conservation of water in new buildings?

• Part L
• Part G
• Part H
• Part M