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Gas Rate And Heat Input
Calculations
10
Chemical Engineering
Professional
09/14/2015

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Cards

Term
Gas Rate Calculation
Metric
Definition
Gas Rate(m3/h)=(2nd read-1st read)x3600
---------------------
time Taken (seconds)
Term
Heat Input Calculation
Metric
Definition
Heat Input(kW)=Gas Rate(m3/hr)x c.v(MJ/m3
----------------------
3.6
Term
Convert btu/ft3 to kW
Definition
by dividing by

3412
Where this is gross
convert to net by divivding by 1.11
Term
Heat Input Calculation IMPERIAL
Definition

Heat Input(btu/hr)=Gas Rate(ft3/hr)xC.V(btu/ft3) Average IMPERIAL C.V=1040btu/ft3

to covert btu/hr to kW divide by

3412

Term
Gas Rate
Imperial
Definition
Gas Rate=Seconds in 1 hour (3600)
-----------------
Time Taken (Seconds)
Term
Heat Input
Definition
Is the amount of heat produced by an appliance in a given time.
Term
Gas Rate
Definition
The quantity of gas used by an appliance
Term
Heat Input (check)
Definition
Total heat input:Not a mandatory check if you have undertaken the
pressure check, however it does allow you to confirm that the
correct injector has been installed in relation to the pressure.
Term
Gas Calculation HEAT INPUT METRIC
D.Q.M
Definition
2nd-1st=gas x 30
gas x 30 x 10.7
/by 1.11
Term
Gas Calc IMPERIAL
D.Q.M
Definition
1098
----
TIME IN SEC
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