Environmental Technology Systems Quiz pt1

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

• To store the heat transfer from the system fluid into the stored water

• To circulate the heat transfer fluid around the system

• To activate the pump when there is enough solar energy and a demand for hot water

• To extract the heat energy from the ground or the air

What is the working principle of heat pumps?

• They use solar radiation to heat water either directly or indirectly

• They extract the heat energy from the ground or the air

• They compress the refrigerant, causing it to heat up and then release the heat over to the system

• They use the expansion and contraction of internal gases to operate the piston

What is the coefficient of performance of a heat pump?

• The efficiency of the system measured in terms of the heat delivered

• The ratio between the heat delivered and the power input of the compressor

• The energy required to power the system

• The efficiency of the pump measured in terms of the power input

What is the purpose of a ground source heat pump?

• To circulate the heat transfer fluid around the system

• To extract the heat energy from the ground

• To activate the pump when there is enough solar energy and a demand for hot water

• To store the heat transfer from the system fluid into the stored water

What is the main purpose of rainwater harvesting?

• To increase the energy ratings of new-build properties

• To store the heat transfer from the system fluid into the stored water

• To extract the heat energy from the ground or the air

• To capture water from the roof of a property when it rains

What is the potential use of harvested rainwater?

• Flushing WCs, car washing, garden watering, supplying washing machines

• Drinking water, washing dishes, food preparation, personal hygiene

• Flushing WCs, car washing, garden watering, washing clothes (after additional treatment)

• Drinking water, car washing, garden watering, supplying washing machines

What is the classification of greywater under the Water Regulations?

• Category 1 low-risk water

• Category 2 moderate-risk water

• Category 5 high-risk water

• Category 3 medium-risk water

What is the potential use of filtered and stored greywater?

• Drinking water, car washing, garden watering, supplying washing machines

• Flushing WCs, car washing, garden watering, supplying washing machines

• Drinking water, washing dishes, food preparation, personal hygiene

• Flushing WCs, car washing, garden watering, washing clothes (after additional treatment)

What is the main purpose of a micro-combined heat and power (mCHP) system?

• To extract the heat energy from the ground or the air

• To increase the energy ratings of new-build properties

• To supply heating and hot water while also producing electricity

• To capture water from the roof of a property when it rains

What is the main purpose of biomass as a fuel source?

• To produce heat by burning biological material

• To extract the heat energy from the ground or the air

• To capture water from the roof of a property when it rains

• To increase the energy ratings of new-build properties