Commercial NG Burners

 High Pressure Burners (T Type)

Burner Type	Consumption (Kgs/Hr)
T-22	0.9
T-35	1.58
T-50	2.24
T-78	3.56

Avg Load that has to be considered for HP burners is 2 SCMH  

High Pressure Burners (M Type)

Burner Type	Consumption (Kgs/Hr)
M-22	0.9
M-35	1.58
M-50	2.24
M-78	3.56

 V Burner

            

Burner Type	Consumption (Kgs/Hr)
V-300	1.58
V-600	1.58
V-900	1.58
V-1200	1.58

Bunsen Burner (Laboratory Burner)

Consumption - 0.3(Kgs/Hr)

Meters & regulators for I&C Connections & Type of Consumers

Commonly used meters & regulators for I&C Connections 

Tentative Load SCMH	Meter Size SCMH	Regulator Size SCMH	Regulator Type	Operating Pressure mBar
Upto 2.5	3.	3.	Domestic	21
2.5 - 6	6	10	Module / Riser	100
6 - 10	10	10	Module / Riser	100
10 - 25	25	25	Module / Riser	100
25 - 40	40	40	Riser	100
40 — 65	65	65	Riser	100
Above 65	Combination of above	Combination of above	Module / Riser	100
Above 65	Customized	Customized	MRS	100 - 500

 

CRITERIA FOR SELECTION OF METER

•  Contractual requirement
•  Rangeability or Turndown ratio
•  Accuracy required
•  Pressure requirement
•  Calibration & maintenance requirement
•  Size & weight
•  Installation and maintenance constraints
•  Operability
•  Cost
•  Gas quality

RANGEABILITY

The ratio between Qmin and Qmax, i.e. the minimum and maximum flow rate

respectively for which the meter performs within the maximum permissible errors.

For various type of meters are as follows,

• Diaphragm meters 1: 150
• Rotary Positive Displacement meters 1:30 or Better
• Turbine 1:30 or Better

FILTRATION

Filtration at 50 microns or finer should be fitted to all metering system operating

at pressure above 500 mbar and 27 deg C.

CORRECTORS

Electronic volume correctors will be fitted to all meters operating between flow

range of 800 to 2500 scmd and for flow range above 2500 scmd Electronic flow

meter will be used.

GUIDANCE ON SELECTION

1. Commercial A (Up to 200 scm per day)

a. Normal Commercial :- Small Cafeterias, Restaurants, Caterers, SSI’s etc.

b. Small Commercial :- Office kitchen / Pantries.

c. Concessionary Commercial:- Temples, Charitable trust, Govt. Institution, etc

2. Commercial B (5000 to 25000 SCM per month)

Small scale commercial establishment and industries.

3. Commercial C (above 1000 scm per day)

Big hotels, commercial establishment , hospitals etc.

4. Commercial AC (Only for > 200 TR VAM)

Big hotels, commercial establishment , hospitals etc

5. Industries (Above 1000 SCM per day)