MECO's Integral heating coil provides for hot standby operation and, with start up and distillate production, immediately upon demand. Demand can be automated from your storage tank or manually from your command. While in standby, the VC still maintains its temperature, pressure, water levels, safety and alarm parameters. No pumping is required and the compressor is idle during hot standby.

MECO's vertical arrangement allows the feed water to be on the inside of the tubes yielding numerous benefits to operation and maintenance. Feedwater boiling on the inside of a tube (percolation) allows the flow to travel up the inside diameter of the tube and return to the base of the evaporator via an internal downcomer. The natural circulation evaporator design eliminates the need to force circulation using pumps and spray nozzles, which increase both operating and maintenance costs.

Stainless steels are susceptible to stress corrosion cracking (SCC). Although several factors influence an evaporators susceptibility to SCC; the presence of oxygen and carbon dioxide are major contributors. MECO stills have a decarbonator in the feed water stream to remove oxygen and carbon dioxide before their harmful effects have a chance to impact the evaporator. Removing carbon dioxide from the feed water also provides the product water with a lower conductivity.