Grape Cold Storage Warehouse
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- The freezing point of grapes is around -3℃, which means the storage temperature needs to be in a range of -1～0℃. If the environmental temperature is less than the freezing point of grape, the fruit will become damaged due to freezing.
- The best humidity for grapes is an environment with about 90-95% humidity. When humidity is outside of this range, the grape will rot and the stem will dehydrate. Therefore, keeping a suitable environment for the grapes is an important component for grape storage.
- Decreasing the oxygen content or increasing the carbon dioxide content in the environment is helpful to long term storage of grape. Generally speaking, the suitable oxygen content is 2～4%, and the suitable carbon dioxide content is 3～5%.
- Late maturing grapes can be stored for about 2-7 months in a cold storage facility.
- If the client wants to prevent rotting, a fungus free environment must be guaranteed, as fungi types common to grapes have a low temperature resistance.
| Cold storage warehouse capacity | 4000m3 | Storage capacity | 1000 tons |
| Storage cargo | Grape | Cargo handling method | Cargo shelf |
| Height of cold storage warehouse | 5m | Cargo storage method | |
| Construction time | September 2014 | Construction period | 80 days |
| Cold storage warehouse classification | Customer use | Building structure | Concrete |
| Design temperature | -1-2℃, 4 air conditioning storage warehouses, its height is 5 meters |
| Cold storage warehouse humidity | 90-95% temperature: -1~ 2℃ O2 content 3%~-5%, CO2: 3% |
| Pressure tightness | Pass the Half-pressure method test and comply with the international standard. |
| Refrigerating unit | Emerson Copeland brand |
| Condensation method | Air cooling |
| Evaporation method | Draught fan |
| Defrosting method | Natural wind defrosting |
| Liquid feed method | Direct expansion liquid feed |
| Freezing medium | Environmentally friendly freezing medium |
| Electronic control method | PLC long-distance intelligent control, inspecting cold storage warehouse real-time temperature, draught fan operating state, defrosting state |
| Cold storage warehouse thermal insulation | 100/150 thickness double-sided colored steel polyurethane insulation board |
| Cold storage warehouse door | Double-sided stainless steel single hinge door/ sliding door |
In order to monitor the produce condition, Howcool has installed an inspection window on the cold storage warehouse. This window has passed air tightness tests, with a pressure tightness of 300MPa and a half-depressurization period of 20-30 minutes.
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