News

Pressure loss calculation and pressure article - November 5, 2021

A couple of things has happened since last update. The most important being the Pressure loss calculation knowledge article. It describes how to calculate pressure loss in straight pipes and fittings (e.g. bends, valves, reducers, etc.)

The other news is the addition of the Pressure article describing different aspects of pressure.

Percentage calculation - October 15, 2021

The article describing how to do percentage calculations was added recently. It is not directly related to the other topics on the page but I recently asked how to do percentage calculations and decided that the topic should be added to the website.

Solve equations by iteration or using a spreadsheet - October 4, 2021

Some equations are not analytically solvable. The new article show how this is solved by "hand" or using the Goal Seek function in a spreadsheet. The Colebrook equation determining the friction coefficient for pipes is used as example.

NPSH - September 27, 2021

The important subject pump cavitation and net positive suction head (NPSH) has been dealt with in a new article.

Water calculator - September 23, 2021

Vapor pressure and saturation temperature added to the water calculator.

Getting started - September 14, 2021

A lot has happened on the site during the summer. Latest news, besides the addition of news, is the addition of calculators for wet steam (two phase) one where the input is temperature and vapor quality and one where the input is pressure and vapor quality. Both calculators use the industrial formulation IAPWS-97 and are capable of calculating density, specific enthalpy, specific entropy and specific internal energy. The plan is to expand the capabilities of the calculators to include more thermodynamic properties at a later stage.

The saline water including seawater thermodynamic property calculator was added along with tables and graphs for selected temperatures and salinity. Both includes following thermodynamic properties freezing temperature, density, specific isobaric heat capacity, specific isochoric heat capacity, specific enthalpy, specific entropy, specific internal energy, thermal expansion coefficient, speed of sound thermal conductivity.

The steam calculator capable of calculating the same properties as the saline water calculator has been part of the site for some time. The plan is to add a table/graph page for steam soon.

The water calculator has been part of the site since the launch of the site and recently the table/graph page for water was added.