8202L3CHPPT5

Why do we need central heating systems in buildings?

• To increase heat production

• To replace the heat lost from the building

• To improve the building's aesthetics

• To reduce the building's weight

Heat loss from a building is measured in which unit?

• Joules (J)

• Watts (W)

• Calories (Cal)

• British Thermal Units (BTU)

Which two ways can heat loss from a building occur?

• Through the building fabric and due to electricity

• Due to ventilation and solar gain

• Through the building fabric and due to ventilation

• Due to solar gain and electricity

What is the term used to describe the thermal transmittance of heat from a building to the outside?

• R-values

• K-values

• U-values

• H-values

What do U-values express in the context of building construction?

• The color and texture of the building materials

• The cost-effectiveness of the building materials

• The rate of heat transfer through the building structure

• The durability of the building materials

What will happen to un-insulated heating pipes according to the text?

• They will absorb heat from the surroundings.

• They will not experience any heat loss.

• They will lose heat.

• They will become more efficient in heat transfer.

What is the consequence of the heat loss from an un-insulated pipe to the surroundings?

• It has no effect on the surroundings.

• It helps to warm the dwelling.

• It increases the efficiency of the heating system.

• It causes the water to heat up more.

What happens to the water by the time it reaches the heat emitter after leaving the boiler?

• It remains at the same temperature.

• It has already cooled from when it had left the boiler.

• It becomes hotter than when it left the boiler.

• It turns into steam.

What is the internal design temperature within dwellings based on?

• The color of the room

• The type and usage of the room

• The size of the central heating system

• The personal preference of the designer

Why should a design room temperature be selected?

• To ensure the central heating system is operating

• To complete the heat loss calculations

• To achieve a comfortable living condition within the room

• To reduce the cost of the heating system