Equation
Use to calculate
Formula
1
Steam load from kW heat rating
kg/h
2
An air heater kW rating from the air flow and temperature rise
kW
3
An air heater steam load from the air flow and temperature rise and the
steam pressure in the heater
kg/h
4
The amount of heat needed to change the temperature of a substance
kJ
5
The mean heating load to change the temperature of a weight of
substance over a stipulated time
kW
6
The heating load for a flow-type application like a heat exchanger
kW
7
The mean steam load to heat steam pipework over a stipulated time
(warm-up load)
kg/h
8
The steam load for radiation losses from steam pipework (running load)
kg/h
9
The heating capacity of a heat exchanger or coil at start-up
kW
10
The heating capacity of a heat exchanger or steam coil when operating
kW
11
The steam valve Kv, given upstream pressure, mass flowrate ...
and a pressure drop less than CPD
m
3
/h.bar
12
The pressure drop ratio ‘x’
13
The steam valve Kv, given the upstream pressure mass flowrate ...
and a pressure drop greater than CPD
m
3
/h.bar
14
The steam mass flowrate given upstream pressure Kv ...
and a pressure drop less than CPD
kg/h
15
The steam mass flowrate given upstream pressure, Kv ...
and a pressure drop greater than CPD
kg/h
16
A water control valve Kv given volume flowrate and pressure drop
m
3
/h.bar
11.5.13
General information
Useful calculation data
Local regulations may restrict the use of this product to below the conditions quoted.
In the interests of development and improvement of the product, we reserve the right to change the specification without notice.
© Copyright 2014
TI-GCM-13
CM Issue 3
Heating formulas
