WorksheetsGwatermcHP
Total questions: 15
Worksheet time: 12mins
What is greywater?
Leftover water from sinks, showers, and washing machines
Highly purified water for drinking
Water from natural sources like rivers and lakes
Water that has been contaminated with sewage
Why Call it Grey?
Because it comes from natural sources like rivers and lakes
Because it is dirtier than blackwater
Because it is highly purified water for drinking
Because it is in between clean water and sewage water
Why should untreated greywater not be stored for long periods?
It freezes
It evaporates
It promotes bacterial growth
It solidifies
Which classification applies to greywater under regulations?
Class 1
Class 2
Class 5
Class 3
Which system component must be clearly labeled?
Kitchen taps
Garden hose
Greywater pipework
Electricity meter
What is the main output of a micro combined heat and power (micro‑CHP) system?
Gas
Water
Heat
Electricity
How much electricity can a typical domestic micro-CHP system generate once warmed up?
Up to 2kW
Up to 1kW
Up to 3kW
Up to 4kW
What is the driving heat source for micro‑CHP systems in the UK?
Recovered heat
Solar heat
Biofuels
Natural gas
Which technology is the most prevalent in today's domestic micro‑CHP market?
Stirling engines
Rankine engines
Fuel cells
Internal combustion engines
What is the typical efficiency of a stirling engine micro‑CHP system?
Around 70%
More than 90%
Around 90%
Less than 50%
What is meant by 'heat-led'?
80% of the heat is used to produce heat to the property, whilst the power generation is secondary 15%.
50% of the heat is used to produce heat to the property, whilst the power generation is secondary 50%.
100% of the heat is used to produce heat to the property, whilst the power generation is secondary 0%.
30% of the heat is used to produce heat to the property, whilst the power generation is secondary 70%.
What happens if there is more demand for heat in a micro-combined heat and power (mCHP) system?
The system shuts down
The supplementary burner ignites
The engine produces more power
The heat exchanger stops working
Why is a building with good and effective insulation not normally suitable for a mCHP system?
It is likely to have a high demand for heating.
It is unlikely to have a high demand for heating.
It increases carbon emissions.
It requires more energy to heat.
What is the focus of Building Regulation J?
Sanitation and hot water safety
Heat producing appliances
Conservation of fuel and power
Electrical safety
Which Building Regulation is related to the installation of supply and control wiring?
Regulation A
Regulation B
Regulation P
Regulation L
