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 2-6 Which of these is a toxic solar collector fluid?
a)
Distilled water
b)
Ethylene glycol
c)
Propylene glycol
d)
Synthetic oil
2-7 Which one is required for a heat exchanger using a toxic fluid to heat domestic
hot water?
a)
Single wall construction
b)
Double wall construction
c)
Sacrificial anode
d)
Stainless steel bonnets
2-8 Which of these types of storage tanks will always require a sacrificial anode?
a)
Cement lined
b)
Phenolic resin lined
c)
Glass lined
d)
Stone lined
2-9 The high point of a glycol-filled collector loop must have which one of the
following?
a)
An automatic air vent
b)
A manual air vent
c)
A vacuum breaker
d)
An expansion tank
2-10 Where should an expansion tank be placed in a closed loop system?
a)
On the inlet side of the heat exchanger
b)
On the inlet side of the collectors
c)
On the inlet side of the pump
d)
It can be placed anywhere in the loop
OPERATION
2.8 QUESTIONS FOR SELF-STUDY
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