Increasing energy efficiency by conserving boiler feedwater temperature

For increased energy efficiency and cogeneration, the procedure is to maximise the production of high-pressure steam and minimise the factory requirements of lowpressure process steam. This takes maximum advantage of efficient fully condensing turboaltemator systems. Factory configurations that reduce process steam requirements were examined in a paper at the 2000 Conference. The present paper addresses the production of more high-pressure steam by minimising heat losses presently occurring at the boiler feedwater tank and in the boiler blowdown. The examination quantifies the benefits of such schemes and should be helpful to technical staff faced with reconfiguring their factories to meet the steam production and consumption targets necessary for profitable cogeneration, or by staff in factories that have a need to save bagasse fuel.