排灌机械工程学报2012，Vol.30Issue(6)：705-709,5.DOI:10.3969/j.issn.1674-8530.2012.06.017
冷却循环水系统节能及应用
Energy saving in cooling water circulation system and its implement
摘要
Abstract
The cooling water circulation system is frequently subject to a low efficiency and a high e-nergy consumption caused from improper pump selection, unreasonable regulation of working condition, unscientific management of operation and difficulty in energy consumption evaluation. In order to reduce the energy consumption, the water circulation system in a chemical plant was used as an investigation model, then the situation of equipment installation and pump operation conditions during normal production period were surveyed. Comparing the existing energy consumption with that under a variable frequency speed regulation, the space for energy saving was identified; eventually, the analysis of assessment of energy consumption of the whole system was completed. An energy-saving water supply strategy, where a variable frequency speed regulation was utilized in the pump stations of the cooling water recirculation system, was established according to the pump affinity laws and by considering the energy-saving in the pumps themselves and their systems. Under the premise of meeting the chemical production process requirements, a constant pressure water supply was realized in the water recirculation pipe network. Moreover, a survey method for evaluating the energy consumption in a cooling water recirculation system was suggested based on pump performance curve, motor torque-speed curve and operation parameters in the key operation conditions of the system. After the cooling water circulation system was refurbished in that chemical plant, the annual electric power consumption in the plant was reduced to 1.4 × 105 kW · h from 2. 1 × 105 kW · h, the saved power is around 7 × 104 kW · h, causing the power consumption was reduced by up to 33%.关键词
循环水系统/泵站/变频运行/能源审计/节能改造Key words
cooling water circulation systems/ pumping station/ variable frequency operation/ energy audit/energy saving reconstruction分类
农业科技引用本文复制引用
汤跃,马正军,戴盛,张新鹏,黄志攀..冷却循环水系统节能及应用[J].排灌机械工程学报,2012,30(6):705-709,5.基金项目
"十二五"国家科技支撑计划项目(2011BAF14B02) （2011BAF14B02）
国家杰出青年科学基金资助项目(50825902) （50825902）
