Refrigerating units of provision storerooms for storage of sausage, ham products and edible animal fats
Section 2
General information. System main elements. Technical characteristics of provision refrigerating storerooms
Each of systems (refrigerating unit for sausage and ham products storeroom – system 1, refrigerating unit for edible animal fats storeroom – system 2) consists of condensing unit Bitzer, air coolers ECO, connected together with pipelines system (the refrigerant system), control board and cooling chamber.
The choice of main equipment and parameters of refrigerating units has been made on the basis of the following conditions:
- operation mode of refrigerating units is year-round;
- outdoor air temperature is + (plus) 35 °С;
- unit operating time within 24 hours is 12 hours.
Table 2.1. Technical characteristics of provision refrigerating storerooms
|
Parameter |
Measurement unit |
Value |
||
| Storeroom name |
- |
Storeroom for sausage and ham products storage |
Storeroom for edible animal fats storage |
|
| Temperature in storeroom |
°C |
from -2 to -4 |
from -5 to -8 |
|
| Relative humidity |
% |
80-90 |
75-85 |
|
| Refrigeration capacity |
kW |
4,02 |
6,59 |
|
| Refrigerant boiling temperature |
°С |
-11 |
-15 |
|
| Refrigerant in use |
- |
|||
|
Main equipment |
||||
| Condensing unit | Type |
- |
Bitzer LH44/2FC-2.2Y-40S |
Bitzer LH64/2CC-3.2Y-40S |
| Quantity |
pcs. |
1 |
1 |
|
| Air coolers | Type |
- |
ECO MIC 300 ED |
ECO CTE 58M6 ED |
| Quantity |
pcs. |
2 |
2 |
|
General layout
Figure 2.1. General layout of provision refrigerating storerooms. Inside view
Figure 2.2. General layout of provision refrigerating storerooms. Outside view
Designations given in figures:
1 – compartment for cooling chambers location;
2 – cooling chamber for sausage and ham products storing;
3 – cooling chamber for edible animal fats storing;
4 – condensing unit Bitzer LH44/2FC-2.2Y-40S of refrigerating machine system of the storeroom for sausage and ham products storing;
5 – condensing unit Bitzer LH64/2CC-3.2Y-40S of refrigerating machine system of the storeroom for edible animal fats storing;
6 – control board of system 1 of refrigerating machine;
7 – control board of system 2 of refrigerating machine.
2.1 Control, automatic and protection elements
Control board
Refrigerating unit control board is a device that consists of start-control equipment, control and protection devices and indicating device installed in one casing.
Control board provides the safe functioning of refrigerating unit in nominal mode, refrigerating capacity regulation, protection of electric circuits and unit equipment from overload and short circuits.
Layout of control boards see figures 2.1 and 2.2.
Cooling chamber control block
It comprises the controller, the display and control keys.
Control block is intended for temperature and defrosting operation control in the compartment by means of regulating the refrigerant supply or compressor switching on/off in refrigerating unit. The current temperature in the compartment is shown on screen.
Location of control blocks of cooling chamber for sausage and ham products storing see Section 5 (fig. 5.1) and of cooling chamber for edible animal fats storing – Section 7 (fig. 7.1).
