Refrigeration and energy technology

Refrigeration and Energy Engineering

We offer professional assistance based on a strong foundation in applied thermodynamics, simulation and refrigeration technology.
Moreover, we have vast experience in formulating and managing publicly financed projects (usually financed by the Danish Energy Authority) and services for and in collaboration with the industry.

If you have questions along the lines of:

  • What is the minimum amount of energy for a system?
  • How hot/cold does a component become?
  • What is the necessary heat/cold output, and what physical principle and technical solution is the most competitive?
  • How fast can cooling/heating be done?
  • Where do I find competence for developing and holding a course on energy/refrigeration engineering?

Then call us for a discussion on if and how IPU Refrigeration and Energy Engineering can help you in collaboration with the other competences available at IPU.


  • Software and simulation: We have many years of experience in software development for different platforms and purposes. Our work is typically related to thermodynamics or heat transfer, but have also delivered database-driven applications, fast algorithms for embedded systems and web-based solutions. Our team is flexible and we are advanced users of C/C++, Delphi/Pascal, Python, Javascript, MATLAB, EES, Modelica...
  • Modelling: Models can be used to help to understand a given process and to estimate a systems behaviour in new operational regimes. In a development project, models are used to reduce the number of physical tests and to optimise the design of a system or components. We have made models with many different levels of detyails and we can help you carry out static analysis and dynamic calculations.
  • Energy optimisation: We can use our competences in thermodynamics and heat transfer to optimise your refrigeration system or a production step.
  • Teaching: We can offer you short courses and other documentation material connected to the above-mentioned activities. This could, for example, be an introduction to one of our software products or a more general session covering thermodynamics or specific refrigeration engineering phenomena.

Qucik Links:

Lates News:

  • Pack Calculation Pro is the best refrigeration software: The large EU-fundet project SuperSmart Supermarket has produced the first results and IPU's software Pack Calculation Pro is described as the best tool for refrigeration system calculations in report no. 5 "Computational tools for supermarket planning".
  • Data analysis generates great savings for Maersk Line: Together with Mearsk Line, IPU has developed a monitoring software that reduces maintenance expenses, optimises manual labour and optimises cold chain tranparency for the company's refrigerated containers. The software is integrated with Maersk Line's Remote Conatiner Management (RCM) that uses GPS-tracking and acquires data for the whole fleet of reefer containers. Read more ...
  • CraftEngine, an affordable small power plant: Viking Heat Engines' (VHE) new CraftEngine products convert low-temperature heat at between 90 °C and 200 °C to 10 kW to 40 kW of valuable electricity in a reliable and profitable way. VHE and AVL Schrick have designed a new piston expander for small-scale organic Rankine cycles (ORC) based on car engine technology and IPU has contributed to many phases of this process. Read more ...
  • Calculation software for Danfoss: Tailor-made calculation software for refrogeration processes and components accelerates product development. IPU has developed numerous engineering calculation tools for many different clients related to refrigeration and thermal energy systems. The latest example from this family of applications with adavanced calculations and graphical user interface has been delivered to Danfoss, who now continues the development in-house. Read more ...


  • Software and simulation

    Application Simulation can be used for: Process design (CO2 as a cooling agent) Component selection and dimensioning (energy-efficient planning) System regulation (energy-optimal... Software and simulation
  • Fault detection and analysis

    By monitoring and diagnosing data, irregularities and errors can be identified, often in their emerging phase. This can save a lot of resources otherwise spent on faults in both products and production... Fault detection and analysis
  • CoolPack

    CoolPack is a collection of simulation models for refrigeration systems. The models each have a specific purpose e.g. cycle analysis, dimensioning of main components, energy analysis and -optimization... CoolPack
  • Downloads

    Pack Calculation Pro - Yearly energy consumption of refrigeration plants - including transcritical CO2 systems Simple one-stage CO2 - Illustration of one-stage transcritical CO2 cycles ... Downloads
  • Modelling

    Successful modelling requires that the appropriate modelling level be chosen. Models can be developed at many levels of detailing, and there are many reasons why it is a good idea to identify the... Modelling
  • Pack Calculation II

    Development of Pack Calculation II is discontinued. See Pack Calculation Pro for latest version! Pack Calculation II
  • Education in refrigriation and energy technology

    The unit staff has experience with the following educational subjects at DTU: Basic and advanced refrigerator technology Simulation of energy systems Thermodynamic Modelling Moreover... Education in refrigriation and energy technology
  • Energy optimisation

    Methods for energy optimisation are closely linked to advanced, but also practical use of thermodynamics. The following four basic elements are used: Refrigeration... Energy optimisation
  • Coolselector®2

    In cooperation with Danfoss IPU has developed software for calculation and selection of all components in a refrigeration system. Coolselector®2 makes it possible to select and calculate the components...
  • Pack Calculation Pro

    Pack Calculation Pro is a simulation tool for calculating and comparing the yearly energy consumption of refrigeration systems and heat pumps: Calculate performance each hour of the year (= 8760...
  • SecCool

    SecCool is a program for calculating, comparing and plotting thermophysical properties of secondary refrigerants. SecCool is a package of programs consisting of three parts: SecCool Properties... SecCool
  • Assistance throughout the development project

    Successful product development requires availability of all competences that are to be applied during the complete project course. The process must be managed from the early idea development through... Assistance throughout the development project