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Which two types of energy-saving equipment can utilise heat from the flue gas to minimise heat losses? Select more than one: a. Flue gas dampers

Which two types of energy-saving equipment can utilise heat from the flue gas to minimise heat losses?

Select more than one:

a.

Flue gas dampers

b.

Economisers

c.

Variable speed fan drives

d.

Waste heat boilers

Question 7

A boiler with uninsulated steam pipework can directly impact the HVAC system in the same room.

Select one:

True

False

Question 8

The engineer at a small factory would like to make improvements to the boiler that currently uses fuel worth R3 million each year. The boiler efficiency is currently 77%. Which of the following options will result in the shortest payback period?

Select one:

a.

Making boiler control adjustments costing R40,000, reducing fuel costs by R90,000

b.

Making changes to the system costing R40,000, reducing annual fuel costs by 1.5%

c.

Boiler recalibration costing R25,000, improving efficiency by 3%

d.

Purchasing a new boiler (same model as previous) for R2 million

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