30/6/2013 · Heating and DHW operation.For the comparative study of the two flow-rate adjustment cases, the same DHW volume was used, V dhw =1.22 m 3.The experimental parameters including indoor air temperature (t i), outdoor air temperature (t e), DHW temperature (t dhw) and heat source temperature (t s), recorded for a week period for each of the two analysed cases, from 12th of January 2012 to 18th