| 摘要 |
<p>A fuel supply device supplies, to a combustion device, a mixed gas in which air and/or oxygen are mixed into a fuel gas. The fuel supply device includes: a flow rate control module (10) disposed on a supply line (10a) for the fuel gas; and flow rate control modules (20, 30) disposed on supply lines (20a, 30a) of the air and/or the oxygen. The flow rate control module (10) includes: a thermal mass flow rate sensor (3); a first calculation unit (6) that calculates the thermal flow rate (Fc) of the fuel gas from the output of the thermal mass flow rate sensor (3); a control computing unit (5) that controls the flow rate of the fuel gas via a flow rate regulating valve (2) according to the calculated thermal flow rate (Fc); a second calculation unit (7) that calculates the calculated calorific value (Qv) per unit volume of the fuel gas; and a computing unit (8) that computes the ratio (Qv/Qs) of the calculated calorific value relative to the reference calorific value (Qs) per unit volume of the fuel gas in a reference state. The ratio (Qv/Qs) is used for the control of the flow rates of the air and/or oxygen by the flow rate control modules (20, 30).</p> |
