All Answers (8) 1  This is nice information from wikipedia visit. 2  I guess if you assume the DNA is at rest with an average rise of 3.4 A per base pair, then the length of chr1 would be 3.4A * 249*10^6, i.e. 847*10^6A, i.e. ~85 mm, or 8.5 cm.
Boiler sizing includes two things: 1  The heating and hot water capabilities of the boiler. 2  The physical size of your boiler and whether it will fit in the space you have it destined for.
More About Boilers. A boiler uses natural gas, oil, or electricity to heat water or produce steam, which is circulated through a network of pipes into radiators, baseboard convectors, radiant floors or fan-forced coils. On average, 30 to 40% of household energy bills are from heating and cooling costs.