Thermal Balance & HVACR


In our daily work our customers often encounter problems like these:

  • Do I need more installed cooling power when operating additional equipment?
  • When it is warm outside, we don't have enough cooling, do I really need a new air conditioner?
  • Are my air conditioners (still) delivering their nominal cooling power?
  • How much waste heat is generated by my running equipment?
  • How much air moisture is there and how does it change with (seasonal) temperature changes?
  • How long does it take to reach temperature X when cooling / heating fails?
  • Do I need to do something now when there are more hot days coming?

We support you with these and similar questions, by helping you find the correct problem definition, clarifying definitions (thermal balance, dew point, ...), measuring relevant data (air temperature and moisture - also long term measurements, surface temperatures, air flow) and compute a thermal balance to create a clearly laid out view of key influences on the situation.

We also solve questions that are otherwise only accessible via rough estimations or even not at all using conventional approaches. For example we can calculate how long it will take until a certain temperature threshold is exceeded after breakdown of air conditioning. Our predictions are remarkably exact with deviations of only 0.2°C between calculation and actual measured values during an event. Using this information it is easy for example to come up with the best option for an emergency response contract with your HVACR supplier.

With our service you

  • Have solid, impartially measured data for your talks with your HVACR supplier.
  • Can decided on investments independent of a hardware supplier and without risk of getting the size wrong.
  • Tackle problems before they harm your business.
  • Answer questions that can only be roughly estimated using conventional approaches.


Our analytic process

Without setting up a complex simulation we first measure current temperature, moisture and flows. Depending on the problem we record static data (how efficient is the cooling unit?) or dynamic data (how long can the emergency cooling keep up?) and calculate the energy flow from that. This gives us information about how much heat is generated (for example through the operation of compressors, computer-racks and so on) and how and whereto is the heat removed from the system. Based on that we determine the necessary, respectively sensible size of the cooling or heating equipment. In this way we can give you fast, independent and konkrete advide: how to cover summer heat periods? Do we need additional coolen when we extend operations? What should reaction time should your emergency HVACR contract contain? How long can emergeny cooling be kept up?

For a number of notable customers - for example the Austrian National Bank (see CFD computing center cooling of the Austrian National Bank and the graph below) and the server room of the Austrian Environment Agency - we could answer these questions completely independent of enterprises that sell cooling units. Depending on the complexity of your situation, you will get our answer in just 1-2 weeks after the measurements. Your business and planning risks become controlled and can be estimated with high precision, energy costs decrease and you can re-negotiate your emergency cooling contracts on basis of concrete, independent measurements. Contact us! Summer is coming!

A first look at your particular situation is completely free in any case! Just send a message to office(at)rheologic.at!