Description
The process of evaporation in heated pipes that occurs in water-tube boilers can be demonstrated. The different phases that appear during evaporation in the pipe can be clearly seen. The double-wall glass evaporation pipe allows the evaporation process to be observed closely. Hot water flows through the outer pipe and evaporates the medium in the inner pipe. The non-toxic liquid used starts to evaporate at 40 to 50°C. Low system pressures can be generated with the built-in water jet pump.
The pipe systems are clearly laid out on a metal panel. The hot water circuit consists of an expansion vessel, a circulating pump and heater. An evaporation pipe, vapour collector, watercooled condenser and return pipe form the evaporation circuit. 

System Components Description 

01     cooling water connection, 
02     Evaporator pipe, 
03     Shut off valve, 
04     Water jet vacuum pump, 
05    Collector with manometer, excess pressure valve and bleeding, 
06     Condenser, 
07     Hot water expansion vessel, 
08     Thermometer for hot water feed, 
09     Switch for heater and pump, 
10     Circulating pump, 
11      Electrical heater with thermostat

Features

• Compact, sturdy, Model
• Full glass design for observation of water/vapour flow.
• Simple design.

Experiments
Evaporation Flow:

• Single phase liquid flow
• Bubbly flow
• Slug flow
• Annular flow
• Film boiling
• Drop flow (mist)
• Single phase vapour flow

Effect on the evaporation process:

• Flow rate
• Temperature
• Pressure

System Components

• Cooling water connection,
• Evaporator pipe,
• Shut off valve,
• Water jet vacuum pump,
• Collector with manometer, excess pressure valve and bleeding,
• Condenser,
• Hot water expansion vessel,
• Thermometer for hot water feed,
• Switch for heater and pump,
• Circulating pump,
• Electrical heater with thermostat

Operation & Maintenance Manual
Self-explanatory operating & maintenance manual will be provided. This will include Theory, operating procedure, standard results, and maintenance procedures.

Service Required at Site

• Electric supply 230V AC, 50 Hz
• Water line