" Look at this big black cock, how the fuck can you compete with this?" Karmyn asked me. Karmyn would take a break every now and then and made me suck...their big black cocks aswell. I then watched as karmyn rode both black dicks and moaned and yelled their names. She came about 6 or 7 times in a row and watching her gag those black cocks was such a turn on. Alex decided to put me in a headlock to make karmyn laugh and slapped me a few times aswell. I then started crying like a bitch which made. There seems to be no rigorous theory and a lot depends on fudges like Log mean Temperature Difference and general heat transfer coefficient correlations. It seems too approximate.’ ‘Don’t worry about it,’ I replied. ‘For most systems its perfectly sufficient to design a suitable exchanger on that basis. When you allow for fouling, which itself is difficult to estimate, there is already a lot of uncertainty. Also don’t forget that heat exchanger manufacturers tend to use standard bundle sizes. More

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