Home / Hot gas defrost – saving energy

ELFORSK project reveals savings potential for industrial refrigeration

Optimized control of hot gas defrost systems can reduce the energy consumption by up to 90% shows the ELFORSK-project 347-033 "Optimisation of hot gas defrost for industrial refrigeration plants" conducted by IPU, Danfoss, Johnson Controls, Claus Sørensen A/S and Danish Crown.

A recent ELFORSK project concludes that the hot gas consumption related to defrosting industrial evaporators can be reduced by up to 90% yielding significant energy savings.

Controlling the process in a way that forces the refrigerant vapor to condense inside the heat exchangers helps to exploit more heat from a given stream of compressed gas. Danfoss has launched a new product that uses a floating device to control a defrost valve implementing the findings from the project.

You can read more about the project on ELFORSK’s homepage elforsk.dk or watch the two videos below that introduce the new valve station.

Jorrit Wronski

Jorrit
Wronski

Specialist Engineer, Thermodynamics and Energy Technology
M.Sc., Ph.D.

Phone: (+45) 45 16 04 26
Email: jowr@ipu.dk
blue and purple fire

Thermodynamics and Energy Technology

Analyzing, energy optimizing, modelling, and product development within the field of thermo-dynamic systems and energy solutions. Particular strong in modelling of cooling processes.

Modelling of Physical Systems

Development of digital models of physical system in order to perform simulations in a fast and safe enviroment. We develop digital twins, perform big data analyses, decision algorithms (AI) and visual pattern recognition