Sample interview questions: Can you explain your knowledge of different types of heat exchangers used in hydronic systems?
Sample answer:
Types of Heat Exchangers Used in Hydronic Systems:
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Plate and Frame Heat Exchangers: These are compact units that consist of a series of thin, corrugated metal plates stacked together. Hot and cold fluids flow through the plates in alternate channels, exchanging heat through the metal surfaces. They are efficient, lightweight, and easy to clean.
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Tubular Heat Exchangers: These consist of a series of tubes or pipes carrying one fluid, which pass through a larger tube or shell containing a different fluid. Heat is transferred from one fluid to the other through the tube walls. They can handle higher pressures than plate and frame heat exchangers and are suitable for larger heat transfer capacities.
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Coil or Shell and Tube Heat Exchangers: Similar to tubular heat exchangers, these consist of a bundle of tubes or coils inside a shell. One fluid flows through the tubes while the other flows through the shell. They are versatile and can be used in various applications where high heat transfer rates and pressure resistance are required. Read full answer
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