Vrv Asia Pacific Senior Mechanical Maintenance Engineer Interview Questions and Answers

Equipment handled in past

Q1. Working principal of Plate heat exchanger
Ans. 
Plate heat exchanger works on the principle of transferring heat between two fluids through metal plates.
• Consists of multiple plates with small gaps in between for fluid flow

• Hot and cold fluids flow on opposite sides of the plates

• Heat is transferred through the plates from hot fluid to cold fluid

• Efficient in transferring heat due to large surface area of plates

• Commonly used in HVAC systems, refrigeration, and industria
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Q2. NPSH of Pump and its importance while pump selection
Ans. 
NPSH of Pump is Net Positive Suction Head, crucial for preventing cavitation in pumps during operation.
• NPSH is the measure of a pump's ability to prevent cavitation by maintaining a sufficient pressure at the suction inlet.

• It is important to consider NPSH when selecting a pump to ensure it can operate effectively without cavitation.

• Factors affecting NPSH include pump design, fluid properties, and operating conditions.

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