HEATRAN's exclusive computerized design tools, such as HTaS and HEDAS Systems, were developed to provide design engineer with the tools to make heat exchanger design in shorter time, with greater accuracy, and with higher quality. With our experts' great experience, these software tools are essential in doing many trial design to find out the optimized design solution. And also these programs are the basis of our best quality data sheet. (HEATRAN Design Process)   HTaS is an integrated computer software system which makes it easy to use many thermal rating softwares, and also automatically produces the Excel format data sheet and schematic drawing of air cooled heat exchanger. (See HTaS)   Once the design of shell and tube type heat exchanger is optimized by HTaS, HEDAS automatically produces AutoCAD drawing of Equipment Data Sheet. HEDAS has the following three functional step. (See HEDAS) - Tube Layout Drawing - TEMA Specification Sheet and Setting Plan Sheet - Construction Detail Sheet