🔍 Key Concepts

• Trace the engine jacket water flow path through the heater section of the distilling unit in both the side and rear views. • Distinguish between heating medium connections (engine jacket water) and seawater/brine/product water connections on the shell. • Notice which flanges are at the highest and lowest points of the heating circuit, matching typical engine jacket water supply and return arrangements.

💭 Think About

• Look at flanges I, M, Q, and R in both views: which pair clearly forms a closed loop through the heating space around the evaporator section? • Which connections appear to be associated with pumps, valves, and seawater lines, and which are only connected to the heater jacket with no direct link to pumps or distillate piping? • If engine jacket water is the heating source, would the hot water supply normally enter near the top or bottom of the heating space, and where would the cooler return come out? Match that with the locations of I, M, Q, and R.

✅ Before You Answer

• Verify which labeled nozzles are tied into the heater jacket only, not the evaporator/brine or distillate lines. • Confirm that your chosen pair would allow continuous flow through the entire heating area (no dead‑end connection). • Double‑check that the remaining two flanges are clearly used for seawater/brine or vent/drain service by tracing their piping and associated fittings in the illustration.