基于VB6.0和智能巡检仪的数据采集系统的设计与实现

为验证新型高效换热装置理论计算方法,掌握新产品的传热特性,设计了一套基于VB6.0和智能巡检仪的数据采集系统,在中试项目的应用中,达到了预期目的。实际运行结果证明,该系统组态灵活、易于操作,且运行可靠。     

从江苏市场状况谈促进稻谷去库存措施

<正>一、江苏粳稻市场现状2016年新季粳稻上市以来,一方面,由于粳稻最低收购价格高达3100元/吨,苏皖两省托市收购数量同比大幅增加,新稻存量偏紧;另一方面,由于稻谷连续11年产大于消,阶段性过剩特征明显,最低收购价执行预案连年启动,国家有关部门通过国家粮食电子交易平台集中竞价销售陈稻谷,因销售底价与市场价格严重背离,成交率几近于零,导致最低收购价稻谷库存不断增加。大量库存给仓储和国家财政带来沉重负担,需要从消化存量和控制增量两方面下手,立足当前,着眼长远,综合施策,积极应对。     

海水反渗透淡化用带流体切换器的能量回收设备

Energy recovery device （ERD） is an important part of the seawater reverse osmosis （SWRO） desalination system. There are principally two kinds of ERDs, the centrifugal type and the positive displacement （PD） type. The PD type is of extensive concern and is preferred in large-scale plants. In this article, an innovative fluid switcher was presented and a two-cylinder hydraulic energy recovery unit with a lab-scale fluid switcher was set up. Tap water was used as the working medium instead of the actual seawater and brine in SWRO desalination plants. Under steady state operating conditions, the experimental results were obtained on the variations of the pressure and flow rate to and from the energy recovery unit. The hydraulic recovery efficiency （En） of the energy recovery unit with the fluid switcher reached up to 76.83%.