Pack Calculation Pro

Latest version

v5.6.4 (June 12th, 2025). See below for instructions how to obtain latest version, and how to obtain licenses.

We are happy to announce that as of 9th of January 2025, licenses can be purchased again, with our new authorized reseller FastSpring.

Introduction

Pack Calculation Pro is a tool to guide investment decisions for commercial/industrial refrigeration systems, as well as heat pumps.

Whether you are retrofitting an existing refrigeration or heating system, or creating a new system from scratch, Pack Calculation Pro can provide a thorough comparison of different solutions.

You can compare different system designs, refrigerant choices and control strategies/settings based on yearly energy consumption, cost (Life Cycle Costing), and global warming impact (Total Equivalent Warming Impact) – and of course on ability to deliver the cooling/heating demand every hour of the year.

We kick-start your calculations by reducing the amount of data you should provide, among others by using load profiles and weather data to calculate the performance. We select well-proven default values for most coefficients and parameters, while allowing you to customize these defaults, import your own cooling/heating load profile data, to meet your specific needs.

Our comprehensive database of commercially available compressors, maintained in cooperation with OEMs, makes it possible to compare performance of different products using a single definition for the operating conditions.

Get Pack Calculation Pro

For commercial use, and to enable all features, a paid license is required, which costs from 800 EUR and up depending on the number of users.

Buy Pack Calculation Pro license – FastSpring.

• Bank/wire transfer: De-select “save payment details for automated subscription renewal” to allow wire transfer.
• VAT reverse charge: Click the “Enter VAT ID” link in ‘Your Payment’ section to provide your VAT number.

For a full overview of licensing options and volume pricing, please visit https://www.ipu.dk/pack-calculation-pro-license/.

For sales and pre-sales as well as technical questions, please reach out to us at IPU software support.

Download Pack Calculation Pro

For a full overview of recent changes, check the release notes, as well as the user’s manual (v5.6).

If you need further information, or need an older version, please get in touch at ipu.freshdesk.com.

v5.6 (From October 2024):

Download Pack Calculation Pro – v5.6.4 – (June 12th, 2025)

• Ejector cycles:
  • Dimensioning of vapour ejectors, low-pressure-lift and high-pressure-lift.
  • Major improvements to all ejector cycle calculations.
• Rating points UI:
  • State point diagrams, table and log(p)-h diagrams fully implemented for most cycles. Supporting flooded evaporators.
  • Log(p)-h diagram shows all available properties at mouse cursor position.
• Refrigerant data:
  • R290 (propane) data updated, to allow operating at high condensing temperatures in heat pumps.

v5.5 (June-September 2024):

Download Pack Calculation Pro – v5.5.6 – (September 4th 2024)

• Cycle designs:
  • Heat pumps:
    • One-stage transcritical heat pump model, with water-cooled gas cooler.
    • Auxiliary heater for heat pumps, or standalone boiler system / district heating connection.
  • Refrigeration: Two-stage transcritical with open intercooler, with/without parallel compression.
• Components:
  • Condenser models: Improved model for hybrid cooler / adiabatic gas cooler.
  • Pre-release: Water-cooled evaporator, allowing for custom source temperature profile.
  • Full update of Bitzer product catalogue.
  • Full update of Bock product catalogue.
  • Dorin: Larger CD600 models, and LSPM motor models.
  • Frascold: Full update of hydrocarbon compressor data. SRC, CX, FVR series.
• Control options:
  • Transcritical operation of gas cooler fans can now be estimated at part load. Transition zone of gas cooler control now also slides fan control approach.
  • Pre-release: Limit on potential/available cooling capacity for heat pumps.
• Improvements for water consumption / rainwater tank calculation tool, now respects unit system.
• Rating points UI extended:
  • Pre-release: Displaying state points and log(p)-h diagram for most single-refrigerant systems.

v5.3 (Jan-Nov 2023):

Download Pack Calculation Pro – v5.3.10 – (Nov 6th 2023)

• Rating points UI added – now possible to calculate at user-specified part load conditions
• More ejector cycles added:
  • Two-stage transcritical ejector with/without parallel compression
  • One-stage transcritical ejector with parallel compression
• Auto-generated generic compressors with fixed efficiency for all cycles, allowing to do rough initial calculations before choosing compressors
• More than 1800 new Dorin compressor polynomials from CD, CDS, H, HEX series

Features / Functionality

• Calculate performance each hour of the year (= 8760 operating points)
  • Calculate Life Cycle Costs (LCC) and payback time
  • Get an overview of both energy consumption and carbon footprint (TEWI)
  • Use weather data for more than 3.700 cities around the world
• Calculate rating points at specific part load operations
• Choose from around 18.000 commercially available compressor to build your system: Bitzer, Bock (GEA/Danfoss), Copeland (Emerson), Danfoss, Dorin, Frascold
• Choose between many commonly used cycles
  • Refrigeration cycles:
    • One-stage, two-stage, cascade systems
    • Transcritical, CO2 Booster with parallel compression and ejectors
    • Open or closed intercoolers, liquid injection
    • Flooded or dry-expansion evaporators
  • Heat pump cycles:
    • One-stage subcritical or transcritical
    • Two-stage cascade, subcritical
• Switch between International and US units
• Create reports in PDF and Microsoft Word

The manual describes many of the calculation equations, if you would like to dive deeper and study the way things are calculated.

You can help us …

…with feedback

For maintaining and improving the product, your feedback as a user is very important to us.

• User feedback (ipu.freshdesk.com)

…with translations

If you make a translation, we will keep you informed of new versions of Pack Calculation Pro before they are released, so that you are able to update any missing translations in the new version. Please check the following page for more information:

• Translations

…with data

If you are missing specific components / compressors, or are an OEM and would like your data or specific components to be included, please get in touch.

We can help you …

…with answering your questions about Pack Calculation Pro

Visit our technical support helpdesk and browse through issues and frequently asked questions. This website is also the best way to get in contact with the right person at IPU, whether you would like to report a bug, you have a feature request or you would like to hear about the future development of Pack Calculation Pro.

…with providing tailored functionality

If you would like us to implement tailored functionality for your company in Pack Calculation Pro, we are glad to assist. We can deliver exclusive customized versions, include new functionality available for everyone, or even build a separate tool from scratch. Simply get in touch with us (contacts below) to discuss pricing and the possibilities.

Read more about IPU and our services here.