MSV Series 1/2'' Liquid Line Solenoid Valve For Refrigeration Wine Cooler

MSV Series 1070/4 G 1/2'' Inches Solenoid Valve For Refrigeration Wine Cooler

The function of the MSV series1070/4 refrigeration solenoid valve is to cut off the circuit of the system when the compressor is stopped, to avoid liquid shock when the compressor is started next time. Generally used in larger refrigeration systems. In refrigeration equipment, solenoid valves are used to change the direction of cooling and heating. The function of the expansion valve in the four core components is to adjust the refrigeration pressure to achieve the effect of evaporating the refrigerant. Here we have a more straightforward explanation: the valve controlled by the electromagnet is referred to as the solenoid valve. These MSV type 1070/4 refrigeration solenoid valves are widely used in automatic control systems. It is a key component of control execution.

Technical data of MSV-1070/4 AC/DC refrigeration brass solenoid valve: 

Main dimension of MSV series 1070/4 G1/2'' inch SAE refrigeration solenoid valve:

MSV-1070/4 diaphragm solenoid valve application diagram in refrigeration system:

Delivery of MSV 1070/4 type solenoid valve for hot gas line with refrigerants:

Three refrigeration cooling methods:

1. Water ice and salt ice refrigeration
At normal pressure, the melting point of ice is 0 °C. Melting ice at 334.8 kJ/kg in ice water reduces its melting point. Within a certain range, the more salt in the ice water, the lower the melting point. Experiments have shown that when the mass of the added salt is 29% of the mass of water ice, the melting point of the mixture can reach a minimum of -21.2 °C. If more salt is added, the melting point will not decrease. Ice salts of different compositions are usually selected based on the appropriate temperature at which the refrigerated article is transported. For example, using salt ice with a salt content of 22%, the cabin temperature can be maintained at -18 to -13 °C.

Water ice refrigeration units have low investment and low operating costs, but ordinary water (salt) ice cubes have low heat absorption and limited cooling chambers. In addition, salt flux can pollute the environment, food, corrosive compartments and the value of moisture in the cargo. Therefore, water (salt) ice is first refrigerated in fish and other aquatic products.

2. Dry ice refrigeration
At one atmosphere, dry ice (solid carbon dioxide) has a lower sublimation temperature (-78.9 ° C) and a large amount of sublimation heat (573.5 kJ / kg). Therefore, not only can a lower temperature (generally lower at -20 ° C) be obtained, but also a larger amount of refrigeration can be obtained. This cooling method is therefore suitable for transporting frozen foods.

The dry ice refrigeration unit has simple operation, low investment, high operating cost, convenient use, and the goods are not damp. CO2 gas produced by sublimation of dry ice can inhibit microbial growth, slow down fat oxidation, and weaken the breathing of fruits and vegetables.

However, the sublimation of dry ice is likely to cause frosting; excessive carbon dioxide gas can cause difficulty in breathing and freezing of refrigerated goods such as fruits and vegetables; temperature regulation in the compartment is difficult; dry ice costs are high, consumption is large, and practical application is less.

3. Cold plate refrigeration
The principle of cold plate refrigeration is to use a cold storage device (refrigerant) for storage after freezing. Before transporting, the water tank in the refrigerator is "cooled" to be cooled and frozen, and then the cold plate in the transport is used to dissolve the heat in the melt to keep the temperature inside the vehicle within the temperature range of the transported cargo. Therefore, the cold plate is also called "the cold storage plate."

The cold plate structure of the cooling device is divided into an integrated type and a split type. Integrated power plants, refrigeration units and refrigerated panels are placed in the car; in the car, only the refrigeration unit and the refrigerated plate are installed. In the parking lot, the solid-state drive is used to drive the refrigeration unit to “cool” the cold plate. The latter is more practical. Ordinary regenerators are low-melting eutectic solutions, and the melting point is usually lower than the suitable temperature in the car by about 10 °C. When the proper temperature of the transported goods changes, the composition of the selected eutectic solution will also change.

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