[Twenty cold design a safe rule]

With the current development of technology, cold storage professional design specifications in the present society becomes more and more important. The following is a cold storage design security in 121 of:

1. The use of ammonia as a refrigerant cold storage refrigeration system should be built in the surrounding less densely populated areas.

2. On the outside of the refrigeration room door and convenient for operation, set off the refrigeration compressor power switch, this switch should be able to stop the operation of all refrigeration compressors, and should set the relevant logo. If the machine control panel is located in the master control room, each side should be added to the refrigerant compressor button switch.

3. Room for ammonia refrigeration system shall be equipped with emergency air exhaust means; accident ventilator should be explosion-proof motor, when the cooling system accident is cut off the power supply should be able to ensure a reliable power supply accident ventilator. Overload protection should an accident ventilator role in signal alarm system without stops directly ventilator. Accident exhaust fan control button box should be concealed in the wall outside the door ammonia compressor.

4. located in the outdoor condenser, oil separators and other equipment should be fenced to prohibit entry into the non-operation, and set the identity. When the high-pressure accumulator is outdoors due awning.

5. The need to set up cold storage distribution room, and should be as close to the compressor room.

6. ammonia compressor room, high and low voltage power distribution room for an arrangement of the emergency lighting, lighting duration of not less than 30 minutes. Room lighting selection proof lighting, illumination is preferably 50-70Lx.

7. The ammonia concentration of ammonia compressor room should install automatic measuring device, when the ammonia concentration approaches 10% of the lower explosive limit, it should be able to send an alarm signal.

8.control apparatus ammonia compressor room should be located in the control room side of the room, and normal operation will start sparking power plant, the Treasury temperature telemetry, recording instruments, etc. should be arranged in the control room.

9. Each refrigeration compressors, pumps, cooling towers and other equipment should be installed electrical meter; the same air coolers, evaporative condensers and other installation shared an ammeter when several motors, electrical control and share a set of short-circuit protection but it should be set separately for each motor overload protection.

10. The room doors should open outwards. The number of gates should ensure that leave quickly in case of emergency.

11. Each refrigeration compressor should be installed in the emergency stop button on the console unit.

12. easy to leak liquid ammonia and ammonia should be set relatively centralized location ammonia diluted spray device at the top.

13. You should set up a secure channel maintenance, operating within rooms

14. Inter cooling, freezing rooms, cold rooms, freezers, etc., and hallway lighting illumination not less than 20Lx; processing room, packing room lighting illumination, etc. should not be less than 50Lx.

15. The cold storage warehouse in the lighting arrangement should avoid ceiling type air cooler and the top row of tubes in the library working channel focus light cloth, inside the cargo may be uniformly arranged.

16. Within the Treasury should be moisture-proof lighting switch or switch airtight switch, each warehouse lighting switch should be centrally installed on the outside between the Treasury and shall be disposed away from the door.

17. Treasury within the lighting installation height is equal to or less than 2.2m, shall adopt AC24V safety voltage. Lamps metal should contact protection line (PE line).

18. below 0 ℃ cold storage warehouse power and lighting circuits shall be used for low temperature copper core rubber insulated cable, and appropriate for surface

19. Treasury through the insulation of electrical wiring

20. mezzanine floor within the Treasury shall install electrical equipment and laying of electrical lines.

21. cold should lift low voltage power distribution room dedicated to the distribution circuit.