Frigo-consulting – case study detail gas 1981


All-in-one systems are used to heat or cool rooms and/or goods, not only in the retail sector, but also in industrial fields, such as distribution centres. These all-in-one systems count actually not as an innovation yet, but all-in-one systems using natural refrigerants, such as CO 2 are lighthouse projects so far. electricity drinking game They set the pace of the industry and allow the dreams of the future to come true. There is an increasing trend in these projects: in the past two years Frigo-Consulting engineered and realized more than 15 comparable systems for well-known retailers such as Migros, Coop, Spar Group, Kaufland Group or Transgourmet. Further projects for retail and industrial applications are in the pipeline.

One of these key references was realized in Lesznowola, Poland. Wholesale giant Transgourmet built a 14‘500m2 (sales area: 8‘150m2) SELGROS Cash&Carry market in Eastern Europe. gas prices going up to 5 dollars The building envelope corresponds to current environmental standards: within refrigeration, all LT and MT cooling cabinets are equipped with glass doors; refrigeration/fresh product zones with customer traffic have been closed with heat-absorbing glass with sliding doors at the entrance. gas after eating dairy LED lighting in LT and MT cabinets, on the sales floors as well as in logistic and office areas serve as an energy saving light source. Air-handling units are equipped with high efficient heat recovery-exchangers and work with reduced fresh air supply. In order to optimize the energy consumption, the heating system was dimensioned with a low temperature level, operating at +42°C / +27°C.

For the refrigeration part, two transcritical CO 2 boosters with a refrigeration capacity of totally 500kW for MT and 110kW for LT, are the installation’s heart. Thanks to the latest multi-ejector technology (liquid/gas), a semi-flooded evaporation process of the cooling units enables the raise of the evaporation temperatures to -2°C (MT) and -26°C (LT) during 24h, all year long. r gasquet This achievement facilitates the throttling energy recovery of high pressure to medium pressure, which reduces the compressors’ driving power.

The next mile stone in development and optimization of all-in-one systems was the centralization of the so far decentralized AC components. These were bundled in two powerful multi-compressor installations with full CO 2 technology, which covers the entire AC’s cooling needs. Individual configuration and double-stage installation technology allow chillers and reversible heat pumps to switch automatically into heat pump mode, depending on weather conditions and heating demands of the building. Thus, green heating energy, without fossil fuel source is produced. electricity and magnetism study guide 5th grade This lighthouse project is the first completely heated building with an energy efficient HVAC-R source and an ESEER AC 4,747 / heat pump 4,738 (ESEER = european seasonal energy efficiency of refrigeration equipment), coming out of an energy production of four full CO 2 refrigeration units.

The heat pump operation energy of the system C & D is recovered from ambient air through additional external evaporators, which are integrated in the gas coolers of installation A & B. Together, these four heating systems deliver a heating capacity of 850 kW, with an ambient air temperature of -20°C. Because of the system’s novelty, a back-up system with 250 kW heating capacity was installed; especially, as in this region, temperatures can fall below -20°C for several days.

Heat storage is covered through two buffer tanks of 1x 4‘000l at +42°/+27°C (785kW), 1x 2‘000l at +60°/+40°C (64kW) as well as a buffer storage of 3‘000l for the entire tap water requirements. electricity in the 1920s There is also a buffer tank with heat exchanger (+15°/+60°C, 1’500l/h ) with integrated hygiene module. Chilled water is stored constantly for AC needs in a tank of 3‘000l at +8°/+14°C (618kW), which is served by system C & D.

Transgourmet’s lighthouse project in Lesznowola’s was an important step on the roadmap to meet the company’s targets: Transgourmet Central and Eastern Europe (CEE) Group made a strategic decision, to realise all new stores and also all refurbishments with full CO 2 refrigeration technology. In order to achieve this goal, benchmarking key figures have been defined already in the concept phase for every single installation (i.e. refrigeration: 747‘000 kWh annual electrical consumption, resulting in a benchmark of 1‘800 kWh/m*a, hence, the relevant facility can be compared with every Transgourmet store). Beside the wholesale store in Lesznowola, Transgourmet Group is in realization phase of several industrial installations, which are working with all-in-one systems. One of these projects is a 20‘000m2 Distribution Centre in Hamburg, Germany. Furthermore, another Distribution Centre with >3MW capacity is under way to be commissioned in Cologne.