🔍 Key Concepts

• Trace the flow path of each fluid in the distilling/evaporator unit shown (sea water, feed water, jacket water). • Identify which lines are cooling water (condenser) versus which are heating water (jacket/steam) and which are feed. • Use the rear and side views together to see what piping the flange R connects to and where that piping goes.

💭 Think About

• From the rear view, follow the pipe connected to flange R: does it go into the condenser section, the heating section, or the feed side? • Ask yourself: at flange R, is the fluid going into the unit or leaving it, based on nearby valves, elbows, and direction of other labeled arrows? • Compare flange R’s pipe size and routing with the service sea water and jacket water connections—does it match an inlet or an outlet line you can identify elsewhere in the drawing?

✅ Before You Answer

• Confirm whether flange R is on the shell (condenser/heating space) or on a feed/condensate line. • Verify which label(s) on the side view correspond to the same pipe as R on the rear view by matching color and position. • Be certain whether the fluid associated with R has just passed through the condenser section, the service system, or the engine jacket water circuit before choosing.