The use of a refrigeration plant with compressors driven by inverters.
An inverter refrigeration plant is able to regulate the refrigeration power required by the system through the continuous variation of the
number of revolutions of its components. Such a system allows for:
– operate with a constant evaporation pressure in any working condition;
– to operate with maximum thermodynamic efficiency;
– maximize the efficiency of heat exchangers;
– limit the reaction times of the system;
– increase the useful life of components;
– limit the electrical consumption of machines to a minimum.
Take as an example the case study reported in Table 1 which takes a 25HP compressor as a reference.
From the lines highlighted in blue it can be deduced that a traditional machine can be compared with an inverter machine when
compared under nominal conditions. In part-load operation, a traditional machine will instead consume more electrical energy and deliver less refrigeration power at the expense of COP and operating costs.

Regulation (EU) no 517/2014 of the European Parliament and of the Council of 16 April 2014
on fluorinated greenhouse gases and repealing Regulation (EC) No 842/2006
ANNEX: Placing on the market prohibitions referred to in article 11(1).

Products and equipment: Where relevant, the GWP of mixtures containing fluorinated greenhouse gases shall be
calculated in accordance with Annex IV, as provided for in point 6 of Article 2

Refrigerators and freezers for commercialuse (hermetically sealed equipment) that contain HFCs with GWP of 150 or
more.

Stationary refrigeration equipment, that contains, or whose functioning relies upon, HFCs
with GWP of 2 500 or more except equipment intended for application designed to cool products to temperatures
below – 50 °C.

GROLAND TN R455 50Hz

Code Model Refrigerating power TN max. Refrigerating power TN min. Refrigerating power BT max. Refrigerating power BT min. Technical Sheet
(Register for download)
– G1A 14N G 14 2,3 – –
– G5A 21N G 20 2,3 – –
111700121 G5A 43N G 42 3,9 – –
– G6A 60N G 60 3,9 – –
– G7A 120N G 112 7,9 – –

TN: Tevap= -10°C Tcond=45°C
BT: Tevap= -30°C Tcond=45°C

GROLAND BT R455 50Hz

Code Model Refrigerating power TN max. Refrigerating power TN min. Refrigerating power BT max. Refrigerating power BT min. Technical Sheet
(Register for download)
– G1A 6B G – – 6,2 0,7
– G5A 14B G – – 13,8 1,3
– G6A 20B G – – 20 1,3
– G7A 40B – – 39,7 2,7

TN: Tevap= -10°C Tcond=45°C
BT: Tevap= -30°C Tcond=45°C

GROLAND TN-BT R455 50Hz

Code Model Refrigerating power TN max. Refrigerating power TN min. Refrigerating power BT max. Refrigerating power BT min. Technical Sheet
(Register for download)
– G1A 6N 2B G 6 3,1 2,1 0,9
– G5A 14N 4,5B G 14 2,3 4,7 0,7
– G5A 14N 3B G 14 2,3 3 1,3
111700121 G5A 33N 6B G 32 5,9 6,2 2,7
– G6A 14N 4,5B G 14 2,3 4,7 0,7
– G6A 20N 9B G 20 3,1 9,3 1,3
– G6A 23N 9B G 23 3,9 9,3 1,3
– G6A 25N 6B G 25 3,1 6,2 0,7
– G6A 37N 9B G 37 7,9 9,3 1,3
– G6A 51N 6B G 51 5,9 6,2 2,7
– G7A 50N 15B G 50 7,9 17,4 2,7
– G7A 75N 15B G 90 10,5 17,4 2,7
– G8A 33N 9B G 33 2,3 9,3 1,3

TN: Tevap= -10°C Tcond=45°C
BT: Tevap= -30°C Tcond=45°C