Input Data

Once sieve trays are selected for a given application, the input data that are required in the design calculations include density, viscosity, surface tension, diffusivity and flow rate of the liquid stream, as

well as density, diffusivity and flow rate of the vapour stream. This information can be obtained by performing tray-to-tray distillation calculations; several commercial computer packages are available for this purpose (e.g. PRO II, ASPEN PLUS, HYSIM).

As the physical properties and the vapour and liquid flow rates vary throughout a given column, it is difficult to provide a single design for the entire column. Instead, the column is divided into a number of sections. Within each section, trays are designed with the same layout. Normally the section is a set of trays bounded by two column penetrations (feed and/or drawoff). Tray design calculations should be performed to ensure that trays at the top and bottom of the section meet the design requirements.

Solar Panel Basics

Solar Panel Basics

Global warming is a huge problem which will significantly affect every country in the world. Many people all over the world are trying to do whatever they can to help combat the effects of global warming. One of the ways that people can fight global warming is to reduce their dependence on non-renewable energy sources like oil and petroleum based products.

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