One of the most important equipment components in an engine driven equipment installation, particularly Co generation installations, is the Waste Heat Recovery System. This system must be designed to FIRST provide positive engine cooling and SECOND obtain maximum economical heat recovery while insuring reliability and longevity of equipment.
As a "rule of thumb," reciprocating engines are 30% efficient. That is, of the fuel energy input; 30% goes to shaft horsepower; 30% to jacket water heat; 30% to exhaust heat; and 10% to radiation, oil heat, and other losses.
One of the
oldest and most successful forms of heat recovery employs
VAPORPHASE (ebullient) cooling of the reciprocating
engine. The process of the Ebullient cooling involves the
natural circulation of jacket water at or near saturation
temperature and engine cooling is accomplished through
utilization of the heat of vaporization. This is the
simplest and least costly form of waste heat recovery.
generation installations produce large amounts of steam
for building heat, building cooling (absorption air
conditioning), domestic hot water and various other uses.
To provide as much steam as possible for these loads from
the engine installation, the heat rejected to the exhaust
is also recovered. Because exhaust temperature cannot be
lowered to ambient air temperature, only a portion of
this exhaust waste heat can be economically recovered.
Systems wherein both jacket water and exhaust waste heat
are recovered are yielding system efficiencies in excess
Over 2,750,000 hp. of VAPORPHASE Heat Recovery Units are now in operation......twice that of any competitor.
are contemplating a Co generation system, or if you are
now in the planning
stages, it will pay for you to investigate VAPORPHASE,
Engineering Controls, the industry leader and pioneer.
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