In the following work, heat pumps, solar thermal collectors and district heating networks are connected and linked using nomography. Different collectors - from simple pool absorbers to highly efficient vacuum tube collectors - are modelled for this representation. The temperature elevation through the heat pump is reflected in the nomogram for three different refrigerants. The heating network is considered in this combination with a fixed forward flow temperature level. All modelling is done with the process simulation program IPSEpro. With the parameters described in this thesis, various scenarios are presented in the nomogram, including a practical example of a regional district heating network. The nomogram can be used to map different refrigerants and collectors logically and graphically. Also, the area yield increases can be derived from this representation. Due to the integration of the heat pump, the increased surface yields are on average 23%. In addition, the "cooperative COP" (Coefficient of Performance) and the optimal collector temperature in this assembly can be calculated from thermal collector, heat pump and network. With regard to the area yield increases, it can be said that these rise at low collector temperatures. This leads to a poorer COP of the heat pump, but to an yield cooperative COP. With regard to the optimum collector temperature with an integrated heat pump, it can be seen that this is independent of the collector type and irradiation. In the case of a temperature rise by the heat pump to 75C, the optimum collector temperature of all the collectors under consideration is between 49 and 50C. In addition, it is shown that older collectors in particular might benefit from a heat pump connection.