VCUs 2K efficiency-emmisions
1. Burner’s capacities adjusted according to Manual (for the different barn’s sizes).
2. Burner’s air damper adjusted for 15-20% excessive air (2.5 – 3 % O2 in exhaust gases) which is considered optimum for good efficiency, low emissions & safe operation.
3. Burner’s head adjusted according to Manual (or positions 3 to 4)
NET EFFICIENCY & GAS EMISSIONS
MEASURED in the U.S.A. during Curing season (2000)
with appropriate Gas pressure, Air damper & Head adjustment
CO = 0 ppm
CO2 = 12-12.5% for LPG (propane) fuel
10-10.8% for Natural Gas fuel
NO = 45-85 ppm for LPG (propane) fuel
40-60 ppm for Natural Gas fuel
EFFICIENCY OF BURNER & HEAT EXCHANGER
(with properly adjusted burner)
NET : 90%-94%
Flue gas temperature 350-530o F max with D.B. temp. 85-100o F
Note : gas analysis is taken with the burner well adjusted and at normal operation (not while starting or stopping).
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