text: Heat flow calorimetry measures the heat flowing across the reactor wall and quantifying this in relation to the other energy flows within the reactor.
  where 	
  : 	= process heating (or cooling) power (W)
  : 	= overall heat transfer coefficient (W/(mK))
  : 	= heat transfer area	 (m)		
  : 	= process temperature (K)
  :	= jacket temperature	(K)
  Heat flow calorimetry allows the user to measure heat whilst the process temperature remains under control. While the driving force  is measured with a relatively high resolution, the overall heat transfer coefficient  or the calibration factor  respectively, is determined by means of calibration before and after the reaction takes place. The calibration factor  (or the overall heat transfer coefficient ) are affected by the product composition, process temperature, agitation rate, viscosity, and the liquid level. Good accuracy can be achieved with experienced staff who know the limitations and how to get the best results from an instrument.