Page 172 - Boiler plant and distribution system optimization manual
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Over 100 Ways to Improve Efficiency 157
Figure 10.51—Submerged water heating unit capable of efficiencies in the
mid 90% range.
Potential Savings 18. RUN AROUND SYSTEM
Moderate
Description 19. USE HYDRONIC SYSTEMS FOR EFFI-
In some locations flue gas, with its high CO CIENT HEATING.
2
content, has been used as a source of CO for var-
2
ious purposes. Hydronic systems operate with a higher en-
ergy density than steam systems and have several
Advantages/Disadvantages other advantages:
There would need to be a market for the CO
2
such as oil recovery and the boiler would have to 1. It is a closed system and leaks are usually
be a reliable source less than one half of one percent whereas a
Figure 10.52—When you need
to change the air in a space, heat
can be conserved using a Run
Around system similar to the
sketch above which removes
heat from exhaust air and heats
up incoming air.
