Steam Enthalpy has been measured in BTUs for every power plant I have ever worked on so far. The day that I have to develop a control system using SI units, I will be in for some retraining. After 25 years of old school, I am sure it will be a bit of an effort, but at least I was taught SI, I've just never had a need to use it in practice yet.
Aaron On Sat, Apr 11, 2009 at 12:27 AM, Pat Naughtin < [email protected]> wrote: > On 2009/04/11, at 3:54 PM, Aaron Harper wrote: > > No matter what system of units are used, to speak of steam in terms of any > unit of volume is not very meaningful, unless you also include the > temperature and pressure of the steam. In power plants, we talk of steam in > terms of mass, or we simply state the temperature and pressure of the steam > which is directly related to the energy contained within the steam and > available to do work. > > Aaron Harper > > > Dear Aaron, > > What units do you use for the energy content of steam? Do you use the sole > SI unit for energy: joules, kilojoules, and megajoules, etc.? > > Cheers, > > Pat Naughtin > > PO Box 305 Belmont 3216, > Geelong, Australia > Phone: 61 3 5241 2008 > > Metric system consultant, writer, and speaker, Pat Naughtin, has helped > thousands of people and hundreds of companies upgrade to the modern metric > system smoothly, quickly, and so economically that they now save thousands > each year when buying, processing, or selling for their businesses. Pat > provides services and resources for many different trades, crafts, and > professions for commercial, industrial and government metrication leaders in > Asia, Europe, and in the USA. Pat's clients include the Australian > Government, Google, NASA, NIST, and the metric associations of Canada, the > UK, and the USA. See http://www.metricationmatters.com > <http://www.metricationmatters.com/>for > more metrication information, contact Pat at > [email protected] or to get the free '*Metrication > matters*' newsletter go to: http://www.metricationmatters.com/newsletter to > subscribe. > >
