What Commonly Used Heat Transfer Medium Used in Solar Collectors

question 8

Multiple Choice

What commonly used heat transfer medium used in solar collectors has a boiling point of 212°F and is nontoxic, inexpensive, and capable of containing a high mineral content.

• A) Propylene
• B) Antifreeze
• C) Water
• D) Ethylene

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Definitions:

Safety

The condition of being protected from or unlikely to cause danger, risk, or injury.

Exploitation

Taking unfair advantage of someone or a situation, often for personal gain, at the expense of others' welfare or rights.

Idealized Self-Image

For normal people, the self-image is an idealized picture of oneself built on a flexible, realistic assessment of one’s abilities. For neurotics, the self-image is based on an inflexible, unrealistic self-appraisal.

Tyranny of the Shoulds

A concept in psychology describing the oppressive burden of impossible expectations and standards one imposes on oneself, often leading to stress and unhappiness.