Non-PRO English to Arabic Tech/Engineering Engineering: Industrial packaging machines

In simple terms, the modulation ratio is a boiler’s ability to reduce its maximum output to its minimum output. A narrow modulation range gives a poor ratio whereas a wide range provides a good ratio. For example, if a boiler has a maximum output of 30kW and a minimum output of 7.7kW its modulation ratio is less than 4:1. Meanwhile, a boiler with a maximum output of 30kW and a minimum output of 3kW has a wider (hence better) modulation ratio of 10:1. As a general rule, for a boiler to be classed as having a ‘good’ modulation ratio its minimum output should be one fifth or one sixth of its maximum output.