Blast freezing - FHVT - Leutwyler
Blast freezing is about cooling pre-cooled or fresh goods to temperatures of minus 20 degrees Celsius or colder for a short time. For this, high cooling capacities, air volumes and uniform air distribution are of great importance. Leutwyler Kühlanlagen AG implemented all three aspects in the construction of this blast freezer cell at a food processor of soups and farm products in Jona, Switzerland, using Roller FHVT air coolers for CO2 operation.
| Application | Blast freezing |
|---|---|
| Address | Swiss / Jona |
| Fluid | CO2 |
| Product | FHVT |
Blast freezing - LK - Advansor
At this meat processing company, the pre-cooled meat is blast frozen by reducing its temperature to below -18 °C in a very short time. High cooling power and a large air quantity with high external pressure play a key role during blast freezing. For this system operated with CO2, the engineers opted for LE/LK heat exchangers from Roller given the company's wealth of experience in designing and building such products.
| Application | Blast freezing |
|---|---|
| Address | GRAO / Spain |
| Fluid | CO2 |
| Product | LK - Heat exchanger |
Cryogenic test chamber - LE/LK - F. Zaugg
In order to guarantee the quality and resistance of materials, tests under extreme conditions are necessary. To maintain a room temperature of -60°C in this cryogenic test chamber, the system builder, F. Zaugg AG Kälte und Klima, used a special two-stage Roller direct evaporator coil for cascade operation. The test chamber is first cooled to -20°C with R449a via the first circuit. When this temperature has been reached, the second circuit with the cryogenic refrigerant R23 is switched on and the first circuit now cools the cascade condenser for the cryogenic circuit. In order to reliably generate the evaporation temperature of -66°C in the second circuit, the requirements regarding the nature of the evaporator coil as well as the thermodynamic requirements are very specific. In close cooperation with the customer, an optimally suitable solution was also found for this project.
| Application | Environmental simulation |
|---|---|
| Address | Swiss / Thun |
| Fluid | R449a / R23 |
| Product | LE / LK |
Deep-freeze warehouse - FHVT- PJ KØLETEKNIK
The company PJ KØLETEKNIK in Denmark installed a low-temperature storage room for storing foods at a trading firm. The room has a temperature of -20 °C and uses the R452A coolant.
| Application | Deep-freeze warehouse |
|---|---|
| Address | Fredericia |
| Fluid | R452A |
| Product | FHVT 614 |
Deep-freeze warehouse - HVST - Medical technology
Medical products are delicate goods which need to be stored at a stable temperature. For this low-temperature storage room at a biotech company with a temperature of -35 °C, efficient defrosting was required too. The HVST evaporator from Roller was designed with an aligned tube system, optimum heating rod placement, a large fin spacing and a defrost damper for optimum defrosting.
| Application | Deep-freeze warehouse |
|---|---|
| Address | Bergisch Gladbach / Germany |
| Fluid | R404A |
| Product | HVST 1008 EC EP |
Packaged goods - HVST - Klüvers
The cooling of packaged goods in large cold rooms is often a matter of evenly applying cold to the goods at every point in the room. The air performance must be correspondingly high. Küvers uses HVST type Roller evaporators with powerful EC fans. The condensers are Roller KVNs with gold lacquer fins, which serve as corrosion protection against the salty sea air.
| Application | Packaged goods |
|---|---|
| Address | Niendorf / Deutschland |
| Fluid | HFC |
| Product | HVST / KVN |
How can we help you?
We consult you competently and comprehensively!
Make a concrete enquiry now!
Tel.: +49 (0) 7156 / 2001-30
markus.mank@walterroller.de
