Posted by joe blas on August 30, 2001 at 18:43:29:
WE OPERATE A HIGH TEMP. AND PRESSURE WATER SYSTEM PLANT
FOR BASE HEATING, WE NORMALLY USE A STEAM CUSHION IN THE EXPANSION TANK WHICH IS IN LINE AND THE SAME FLOW AND TEMPREATURE OF THE SYSTEM LOOP.
OUR ENGINEERS RECENTLY IMPLEMENTED A NITROGEN GAS CUSHION WITHOUT ANY DESIGN CHANGES, TO MY UNDERSTANDING IF GAS CUSHION IS TO BE USED THE EXPANSION TANK SHOULD NOT BE IN THE FLOW OF THE SYSTEM AND THE TEMPERATURE SHOULD BE LOWER THAN SYSTEM TEMP., IN OTHER WORDS THE STANDPIPE DESIGN.
THE SYSTEM IS RATED FOR 300PSIG AND 400 DEGREES.
WHAT ARE THE PROS AND CONS OF THIS APPLICATION?
IS THIS CORRECT?
SHOULD I BE CONCERNED AT ALL?