<div dir="auto"><div dir="auto"><div dir="auto"><span style="font-family:monospace;font-size:medium">Hello sirs,</span></div><div dir="auto"><span style="font-family:monospace;font-size:medium">How can i calculate the "Overall heat transfer coefficient of exchanger" of type 5b, when the inlet temperature of hot and cold side  are varied with </span><span style="font-family:monospace;font-size:medium">time .</span></div><div dir="auto"><span style="font-family:monospace;font-size:medium;white-space:pre-wrap">best regards,</span></div></div></div>