Stationary Refrigeration and Heat Pumps


Environmentally friendly refrigeration systems and heat pumps

We model and simulate heat pumps and stationary refrigeration systems in all performance classes for our customers. This includes small household appliances such as refrigerators, household heat pumps, refrigeration systems for supermarkets or hydrogen filling stations, and large heat pumps for supplying heat to entire residential areas. Our focus is on the design, analysis, and optimization of these systems.

Residential Refrigeration and Heat Pumps

Heat pumps for space and water heating, air conditioning, and household appliances

In the residential sector, there are many applications for refrigeration systems and heat pumps, each with different requirements for the refrigeration cycle:

  • Heat pumps for space heating 
  • Heat pumps for water heating
  • Air conditioning
  • Refrigerators
  • Freezers
  • Laundry dryers

Our many years of experience include numerous projects carried out in the field of modeling, design, analysis, and optimization of such systems. In particular, we model and simulate complex and highly dynamic processes, such as icing and defrosting in air-to-water heat pumps or sorption processes in laundry drying.

Industrial Refrigeration and Heat Pumps

Supermarket refrigeration, industrial refrigeration systems, and large heat pumps

We model and simulate large scale refrigeration systems and heat pumps for application in supermarkets, industrial processes (e.g. cooling of compressed air), and for industrial and residential district heating systems. These refrigeration systems and heat pumps often use multistage compressors or cascades  with more than one refrigerant. In contrast to small capacity plants, these systems often use  complex components that are integrated in  custom designs. Among other things, we carry out model-based design optimization and develop regulation and control concepts.

Cooling of Hydrogen

Refrigeration systems in hydrogen storage and refueling

We model and simulate refueling processes for H2. Additionally, we develop efficient loading and refueling strategies, adapted to the requirements of the application. This includes the design and optimization of refrigeration systems for these refueling processes, necessary because hydrogen has a negative Joule-Thomson coefficient and therefore heats up during expansion. During refueling operations, this heat must be dissipated with the help of a refrigeration system. You can find out more about hydrogen here.

Systems without Refrigerant

Thermoelectric, thermomagnetic, and thermoelastic processes

We also model and simulate systems and components that represent an alternative to the vapor-compression process and do not require a refrigerant as a working medium. Solid-state-based cooling systems instead exploit properties of special materials that cool down or heat up as a result of the application of an electric potential, a magnetic field, or mechanical deformation. For example, at TLK we have created our own models for Peltier elements based on our TIL library. These models can be used to simulate thermoelectric processes. We also offer illustrations and simulations of thermomagnetic and thermoelastic processes.


Your contact partner

If you have any questions on this topic, please contact:

M.Sc. Niklas Brandt

+49/531/390 76 - 212