Web Exclusive! Returning to Old Problems Through Past Letters to the Editor
Here is a collection of Letters to the Editor collected throughout 2002 that never made it to print in PME, due only to space constraints.
Everyone fails to consider radiation losses when discussing boiler efficiency. It's one of those things that's very difficult to measure but, on the other hand, supposedly so small that it's insignificant. Radiation losses run less than 3%, and some get as low as 1% of the modern boiler's full load input, but some old designs go as high as 8% in smaller boiler sizes.