Heating Helper

CHAPTER 10 - MISCELLANEOUS∆(delta)∆P∆Tπ(pi)Σ(sigma)= differential, difference in, change in, increment= pressure drop, differential, or loss usually in psi= difference, change or drop in temperature= 3.141592654 = ratio of circumference of a circle. to the diameter of that circle= sum, summation, total ofΩ(omega) = ohm, unit of electric resistance = 1 V/A± = plus or minus, tolerance≠= not equal to< = (is) less than≤ = smaller than or equal to> = (is) greater than≥ = greater than or equal toα≈≅∴∞standard symbols in heating specifications= much smaller than= much larger than= proportional to, similar to= approximately equal to= congruent to= therefore= angle= parrallel to= perpendicular to, at right angles to= infinity, infinite94