This thesis deals with the integration of heat pumps in industrial processes. I looked closely at two industrial processes with regard to their unused process waste heat and economic efficiency. During the first process analysis, a power plant process was investigated, which supplies electricity, steam and district heating for different industrial consumers. We concentrated on the use of waste heat in the cooling system of a steam turbine. For the cooling of the turbine hydraulic oil is used, which emits the stored heat to date to the environment. This unused heat source was used for the integration of a heat pump. In the second process analysis, a dairy process was investigated. As part of the simulation, different configurations were used to consider different types of milk which require different temperature levels. The temperatures range from 75-138C and are provided by a gas-fired power supply. To cool the heated milk again, an ice cycle is used, which cools the milk down to 5C via a heat exchanger. The ice cycle must be cooled by a refrigeration system to a constant temperature level of 2C. The heat transferred to the chiller by the cooling of the working medium (ice cycle) is transferred to the environment via a cooler. This wasted waste heat became also the starting point for further detailed investigation. In the simulation of the two industrial processes using the IPSEpro program, the different process temperatures were used to compare various heat pump circuits, temperature gradients and refrigerants in order to obtain valuable information on the behaviour of the respective plant. Using the knowledge, gained from the power plant simulation, an ideal heat utilization temperature of 110C could be determined. Using this heat utilization temperature, a resource- and environmentally friendly process chain can be built in view of the overall cost savings and the payback period. In the dairy process, it was possible to gain valuable insights into the optimal heat pump circuit by comparing the different milk product temperatures. Furthermore, the total cost savings and the payback periods for the various dairy products were de-termined and appropriate conclusions for the dairy process were drawn.