Cold storage or refrigerator, low-temperature storage method: low-temperature storage method that is frozen meat in Dongguan cold storage. The most practical method for storing meat and meat products. Under low temperature conditions, especially when the temperature drops below -10°C, the moisture in the meat forms ice, which causes the bacteria to grow and develop. However, when the meat is thawed and rejuvenated, the bacteria begin to grow again due to the increase in temperature and the oozing of gravy. Therefore, when using low-temperature storage of meat, it is necessary to maintain a certain low temperature, until the time of consumption or processing, otherwise it cannot guarantee the quality of meat. Refrigeration of meat can be divided into cooling meat and frozen meat.
When processing ham, cured meat and other products, add solute method: that is, add salt, sugar and other solute in meat. It is necessary to marinate the meat with salt, sugar, etc. As a result, the water activity in the meat can be reduced, thereby inhibiting the growth of microorganisms. Mainly through the salt to improve the osmotic pressure of meat, salted method: the storage effect of salted method. Remove part of the water and reduce the oxygen content in the meat, resulting in environmental conditions conducive to bacterial growth and reproduction. However, some bacteria have strong salt tolerance. Salting alone cannot achieve the purpose of temporary storage. Therefore, salting in production is mostly performed at low temperature, and salting and drying methods are often used in combination to produce various flavors. Meat products.
Frozen meat can be moved into the refrigerator for storage. The temperature of the refrigerator, the cooling and freezing of the meat is larger in the occupied space under the hanging condition. For longer storage. Requirements below -18 °C, the center temperature of meat adhere to -15 °C below. The colder the temperature, the longer the storage time. -18 °C, pork can be stored for 4 months; -30 °C, can be stored for more than 10 months. The cold storage of stored meat should meet the hygiene requirements, and each batch of products should be cleaned and disinfected prior to storage. When storing, different meat products must be stored in isolation to prevent cross-taste and affect quality.
The center temperature of the meat is usually lowered to about 0°C to 1°C. The specific requirements for the installation of cold storage in Dongguan are: Before meat is placed in the cold storage, the meat is cooled: it is mainly used for meat stored for a short time. First, the temperature of the reservoir is reduced to about minus 4°C, and after the meat is stored in the warehouse, the temperature is between -1°C and 0°C. The pork cooling time is 24 hours and can be stored for 5 to 7 days. The cooled meat forms a dry film on the outside, which prevents the growth of bacteria, slows the evaporation of water, and extends storage time. Most of the water in the meat is frozen into ice. Frozen meat: The meat is quickly and deeply frozen. This kind of meat is called frozen meat. Frozen meat is more resistant to storage than cooling meat. Frozen meat is generally -23 °C below the temperature, and stored at about -18 °C. In order to improve the quality of frozen meat, it will restore its original flavor and nutritional value after thawing. At present, most cold storages adopt the quick freezing method, which means that the meat is quickly frozen at -40°C, so that the meat temperature is quickly reduced to -18°C. Then move into the refrigerator.
What is DVR Mini Camera
Dvr, which is called DigitalVideoRecorder in full, is a digital video recorder. Compared with traditional analog video recorders, dvr uses hard disk for recording, so it is often called hard disk recorder, also called DVR. It is a set of computer system for image computing, storage and processing. It has the functions of long-time video recording, recording, remote monitoring and control of images/voice and dynamic frames. DVR integrates five functions, including video recorder, picture splitter, PTZ lens control, alarm control, and network transmission. One device can replace a large number of devices in the analog monitoring system, Moreover, it has gradually gained advantages and popularity in terms of price.
The "digitalization" of DVR means that compression and storage technology is aimed at digital signals, rather than directly transmitting digitally encoded video images. Therefore, DVR must be deployed near the analog camera.
The function of DVR, with the increase of various voltage sensitive loads in the distribution network, puts forward higher requirements for power quality. However, due to system accidents in the power system, the voltage flicker, drop and other disturbances caused by the startup and shutdown of large equipment, lightning stroke and other principles are unavoidable. Moreover, in the current power grid, the ability to quickly restore power supply after power interruption is far from meeting the requirements of many sensitive loads. Therefore, it is necessary to provide users with stable and uninterrupted high-quality power when interference occurs. Dynamic voltage recovery (DVR) is the choice to solve the above problems today. DVR is connected in series to the feeder line that requires high-quality power to realize dynamic real-time voltage compensation for the line, so that the load end can get the desired high-quality power, and ensure the normal and uninterrupted operation of sensitive user equipment.
DVR Mini Camera,Cctv Camera System, Outdoor Waterproof NVR Set , Wireless Security Camera NVR, Cctv NVR Kit
DVR Mini Camera,Cctv Camera System, Outdoor Waterproof NVR Set , Wireless Security Camera NVR, Cctv NVR Kit
Shenzhen Fuvision Electronics Co., Ltd. , https://www.outdoorsolarcameras.com