Question 126Refrigeration & AC - 1st Asst/Chief

70% to pass

When the sensing bulb of a thermostatic expansion valve is charged with a fluid different from the charge used in the system, what name of the charge is associated with the power element?

Across charged
Bblended charged
Cstraight charged
Dmixed charged
AI Explanation

The correct answer is A) cross charged. When the sensing bulb of a thermostatic expansion valve is charged with a fluid different from the charge used in the system, the charge in the power element is referred to as "cross charged". This is because the charge in the sensing bulb is different from the charge in the rest of the system, creating a "cross" between the two charges. The other answer choices are incorrect because they do not accurately describe the situation where the sensing bulb is charged with a different fluid than the system. "Blended charged", "straight charged", and "mixed charged" do not specifically refer to the case of a cross-charged thermostatic expansion valve.

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Official Resources
46 CFR Machinery & Electrical 46 CFR Engineering USCG National Maritime Center
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