mCHP Systems Quiz

What does "heat-led" mean in the context of mCHP systems?

• Heat is generated only in winter

• Heat is a by-product of electricity generation

• Heat is the primary output and electricity is a by-product

• Electricity is produced using solar power

Answer explanation

In mCHP systems, 'heat-led' means that heat is the primary output, while electricity is produced as a by-product. This distinguishes it from systems where electricity is the main focus.

What type of fuel is used in most domestic mCHP units?

• Biomass

• Electricity

• Gas

• Oil

Answer explanation

Most domestic micro Combined Heat and Power (mCHP) units primarily use gas as their fuel source due to its efficiency and availability, making it the correct choice over biomass, electricity, or oil.

Which of the following is NOT a typical component of an mCHP unit?

• Solar panel

• Alternator

• Heat exchanger

• Stirling engine

Answer explanation

A typical mCHP (micro Combined Heat and Power) unit includes components like an alternator, heat exchanger, and Stirling engine. A solar panel is not a standard part of mCHP systems, making it the correct answer.

Which engine type is often used in domestic mCHP systems?

• Diesel engine

• Stirling engine

• Steam turbine

• Jet engine

Answer explanation

The Stirling engine is commonly used in domestic micro Combined Heat and Power (mCHP) systems due to its high efficiency and ability to operate on various heat sources, making it ideal for residential applications.

What is the typical electrical output of a domestic mCHP unit?

• 10kW

• 1–1.5kW

• 0.5kW

• 7–9kW

Answer explanation

The typical electrical output of a domestic micro Combined Heat and Power (mCHP) unit is generally in the range of 1–1.5kW, making this the correct choice among the options provided.

What is required for mCHP systems to be eligible for Feed-In Tariff payments?

• Installation in new buildings only

• Installation by an MCS certified contractor

• Solar backup system

• Smart meter installation

Answer explanation

For mCHP systems to qualify for Feed-In Tariff payments, they must be installed by an MCS certified contractor, ensuring compliance with quality and safety standards.

Where should the mCHP unit ideally connect electrically?

• Plug socket

• Light switch

• Dedicated circuit to the consumer unit

• Refrigerator

Answer explanation

The mCHP unit should connect to a dedicated circuit to the consumer unit to ensure it receives a stable power supply and operates efficiently, avoiding overloads that could occur with plug sockets or light switches.

What is the efficiency of mCHP systems typically up to?

• 60%

• 70%

• 85%

• 95%

Answer explanation

mCHP systems can achieve high efficiency levels, often reaching up to 95%. This makes them highly effective for combined heat and power generation, maximizing energy use.

Which type of building is most suitable for a heat-led mCHP system?

• Small flat

• Holiday home

• House with low heat demand

• Large house with continuous heat demand

Answer explanation

A large house with continuous heat demand is ideal for a heat-led mCHP system, as it can efficiently utilize the heat generated. Smaller buildings or those with low heat demand may not benefit as much from this system.

What triggers electricity generation in an mCHP unit?

• Solar light

• Demand for heat

• Night-time mode

• Internet control

Answer explanation

Electricity generation in an mCHP unit is triggered by the demand for heat. When there is a need for heating, the system activates to produce both heat and electricity efficiently.