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  • What is the difference between R404a and R507 refrigerant?

    What is the difference between R404a and R507 refrigerant?

    The refrigerant R410A is a mixture of HFC-32 and HFC-125 (50%/50% mass ratio). R507 refrigerant is a non-chlorine azeotropic mixed refrigerant. It is a colorless gas at room temperature and pressure. It is a compressed liquefied gas stored in a steel cylinder. The difference between R404a and R50...
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  • Scroll Compressor Units VS  screw Compressor Units VS piston Compressor Units

    Scroll Compressor Units VS screw Compressor Units VS piston Compressor Units

    Scroll Compressor Units Principle: The scroll line shape of the moving plate and the static plate are the same, but the phase difference is 180∘ to mesh to form a series of closed spaces; the static plate does not move, and the moving plate revolves around the center of the fixed plate with the e...
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  • Cold storage operation and maintenance experience sharing

    Cold storage operation and maintenance experience sharing

    Preparation before starting Before starting up, check whether the valves of the unit are in normal starting state, check whether the cooling water source is sufficient, and set the temperature according to the requirements after turning on the power. The refrigeration system of the cold storage i...
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  • What is parallel unit? What are the advantages?

    What is parallel unit? What are the advantages?

        A cold storage parallel unit refers to a refrigeration unit composed of two or more compressors that share a set of refrigeration circuits in parallel. Depending on the refrigeration temperature and cooling capacity and the combination of condensers, the parallel units can have various forms....
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  • For cold storage evaporator, is it better to use pipe or air cooler?

    For cold storage evaporator, is it better to use pipe or air cooler?

        Cold storage evaporator (also known as internal machine, or air cooler) is an equipment installed in the warehouse and one of the four major parts of the refrigeration system. The liquid refrigerant absorbs the heat in the warehouse and evaporates into a gaseous state in the evaporator, there...
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  • Cold storage construction experience sharing

    Cold storage construction experience sharing

    1. Make accurate and clear signs in accordance with the drawn construction drawings; weld or install supporting beams, columns, supporting steel frames, etc., and the welds shall be moisture-proof and anti-corrosive in accordance with the requirements of the drawings. 2. The equipment that needs...
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  • Isko Moreno vowed to build cold storage facilities to avoid loss of profits for farmers

    Isko Moreno vowed to build cold storage facilities to avoid loss of profits for farmers

    MANILA, Philippines — Manila Mayor Isko Moreno, a candidate for the 2022 presidential election, vowed on Saturday to build storage facilities to avoid wasting agricultural products that would cause farmers to lose profits. “Food safety is the number one threat to national security,” M...
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  • Operation of screw refrigeration compressor

    Operation of screw refrigeration compressor

    1.First start and stop Before starting up, the coupling must be realigned. When starting up for the first time, you must first check the working conditions of all parts of the compressor and electrical components. The inspection items are as follows:   a. Close the power switch and select the man...
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  • Freezing refrigeration system cycle and components

    Freezing refrigeration system cycle and components

    There are many refrigeration methods, and the following are commonly used: 1. Liquid vaporization refrigeration 2. Gas expansion and refrigeration 3. Vortex tube refrigeration  4. Thermoelectric cooling     Among them, liquid vaporization refrigeration is the most widely used. It uses the heat ab...
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  • Refrigeration welding operation experience sharing

    Refrigeration welding operation experience sharing

    1.Precautions for welding operation When welding, the operation should be carried out strictly according to the steps, otherwise, the quality of welding will be affected. (1) The surface of the pipe fittings to be welded should be clean or flared. The flared m...
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  • A2L HFO replaces R22, R410, R404 and other precautions

    A2L HFO replaces R22, R410, R404 and other precautions

    It is imminent to find replacements for second- and third-generation refrigerants! On September 15, 2021, the "Kigali Amendment to the Montreal Protocol on Substances that Deplete the Ozone Layer" entered in...
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  • China IOT Cold Chain Committee, Yiliu Technology, and CISCS jointly release new cold chain related indexes

    China IOT Cold Chain Committee, Yiliu Technology, and CISCS jointly release new cold chain related indexes

    In recent years, the country and related logistics companies have begun to pay attention to the development of cold chain logistics, because cold chain logistics can effectively ensure food safety, and the low temperature in the co...
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