quencher engine’s functional units

quencher engine’s  four functional units are

energy absorber
water evaporator
steam condenser
sludge or waste remover

let’s develop some primary engine design guidelines from  what we’ve learned so far:

i) a ‘selective’ absorber is very desirable as it minimizes IR radiative energy loss

ii) absorber and evaporator are thermally coupled (by being in close proximity with each other for example)to maximize absorber-to-water heat transfer

iii) evaporator and condenser are thermally coupled so that heat recovered from condensing steam may be reused, greatly improving system efficiency

other noteworthy points

i) system efficiency may be further increased by using sub 100 deg C process temperatures, as lower operating temperatures usually mean lower heat losses

ii) with an efficient absorber, continual sun tracking may be unnecessary, allowing stationary absorbers with optimized fixed sun facing positions based on location latitude. this  reduces system cost and increase system reliability by eliminating moving parts

pictorially, these design guidelines are:



evaporator (and waste removal)


steam condenser


stacking them up, here’s a  representation of the engine’s key functions


it is clear that the design begins to point towards a tightly integrated engine unit


About Vishwa Narayan

who can live without water? drinking water for all is my goal, through Theertham, a not-for-profit organization i founded and registered in Texas. you can reach me at drvishwanarayan@yahoo.com
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