Efficiency in Boiler Feed Pumps for Industrial Steam Generation  

作　　者：Guilherme Filippo Fi|ho 

机构地区：[1]Campus Guaratinguet6, UNESP (Universidade Estadual Paulista), Guaratingueta, SP 12516-410, Brazil

出　　处：《Journal of Energy and Power Engineering》2014年第6期1021-1029,共9页能源与动力工程（美国大卫英文）

摘　　要：This paper presents some opportunities to improve feedwater system efficiency for industrial boilers, usually consisting of multistage centrifugal pumps driven by three-phase induction motors. There is abundant literature on the efficiency in steam boilers. However, few deal exclusively with feedwater systems. The total horsepower in boiler feed pumps and the corresponding energy consumption estimated for Brazilian industries are as follows： 110.5 MWE of motor driven power and a yearly electricity consumption of 442 GWh for a population of 7,800 steam boilers, approximately. It is estimated that there can be an efficiency improvement in feedwater systems for industrial boilers of 30% on average. To a large extent, these opportunities reside in older boilers that are very common in the Brazilian industrial sector. The most common causes for the low efficiency of feedwater systems are： the control loop of the feedwater, oversized boilers and excessive operational pressure set. Sometimes, the boiler feedwater system can present more than one problem simultaneously. Any kind of solution involves some speed regulation, new pump and number of pumps. Each problem generation facilities were selected in which common inefficiencies cases, the improvement in efficiency can get to 37%. form of intervention in boiler feed pumps, such as： impeller trim, may have more than one solution. Three distinct industrial steam are present. The suggested solutions were analyzed. In these three

关 键 词：Industrial boiler boiler feed pump industrial energy efficiency. 

分 类 号：TK223.52[动力工程及工程热物理—动力机械及工程] TK175