Dissipative particle dynamics is a method to simulate the dynamic behaviour of complex systems at the mesoscopic level. Our contribution to the field is to allow the method to also account for the heat transfer. The method conserves momentum (classical DPD) and also energy (DPDE), so that the flow that is represented by the DPDE particles satisfies the well known hydrodynamic equations. A brief summary of the method is sketched in the presentation. More details can be found in the publication list