What software is used to calculate high-pressure feedwater heaters?

For 3-stage superheaters, various manufacturers use their own calculation software; this is because the steam cooling stage, condensation stage, and desuperheating stage need to be calculated separately although they influence each other, and they also share the same piping system. Therefore, it is difficult for general-purpose software such as HTRI to perform accurate calculations. Moreover, merely completing the heat exchange calculations does not guarantee that the product will be reliable. Due to the special nature of three-stage heat exchange, as well as the high temperature and pressure conditions under which the superheater operates, there are many details that affect the product’s lifespan and need to be taken into consideration. In short, the plant’s high-pressure heater is a very special type of shell-and-tube heat exchanger; applying ordinary heat exchanger calculation methods to its thermal calculations poses significant difficulties and risks!

Thank you so much for your answer! It is indeed very complicated; I am currently using Excel to do the calculations following the steps in the book.

Okay, if there are any questions, we can discuss them together. :)

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I made the Excel file based on this, it’s so annoying

This post was last edited by wanlirn on 2022-5-27 at 15:27. The high and low pressure heaters in the power plant are already integrated with the unit; what field are you studying? I heard for the first time that this requires calculation by the manufacturer; everything else is fixed. For Harbin Steam Turbine and Dongfang, there are ready-made designs for units ranging from 200MW to 1000MW (designed by steam turbine companies). It’s not that such calculations can’t be done, but rather, there is years of experience in using these systems – the heat exchange area and structure are fixed. If you want to make any changes, can your company take responsibility for that? You can look for this book online: \"High-Pressure Water Heaters\", written by Cai Xicong

The high and low pressure heaters of the thermal power plant are already integrated with the unit. What major are you studying? I heard for the first time that this requires calculation by the manufacturer; everything else is fixed. For Harbin Steam Turbine and Dongfang, there are ready-made designs for units ranging from 200MW to 1000MW (designed by steam turbine companies). It’s not that such calculations can’t be done, but rather, there is years of experience in using these systems – the heat exchange area and structure are fixed. If you want to make any changes, can your company take responsibility for that? You can look for this book online: \"High-Pressure Feedwater Heaters\" by Cai Xicong. Nowadays, most high-pressure feedwater heaters are no longer compatible with power generation units; each one is different, and calculations have to be done separately for each case

It depends on factors such as the piping structure and the type of segmentation; or it is calculated in segments based on the actual structure. Different three-segment algorithms result in significant differences in the heat transfer coefficient.

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