Katina Jeong
Mp：+86-13661848129
Skype：kitty.ch1014
Tel：+86-21-64787454
Fax：+86-21-57639842
Email：katina.j@shkende.com
Cold Storage Construction Description:
With the continuous development of refrigeration technology, the rapid expansion of cold storage capacity , how to lower energy efficient cold storage has become a bottleneck restricting the development of cold storage . In this paper, how to configure the appropriate heat exchange system , how to improve the efficiency of heat transfer refrigeration system , how to reduce the loss of refrigerated cold process issues such as cold storage building through technical measures put forward reasonable suggestions .
Cold storage building technology energy-saving measures
Sensible heat exchange system configuration
Heat transfer system is the main energy system cold , mainly of a compressor, a condenser , an air cooler and the liquid tank and other components. How cold storage refrigeration effect , mainly in its selection and configuration, especially the compressor and condenser.
Selection and Configuration compressor technology
The compressor is one of the core components of the heat exchanger system design often used in cold storage at maximum load for the selection of the compressor, the compressor according to the load reasonable adjustments to reduce the number of units or the number of compressor cylinder , the system load and compression machine cold match against " big horse car " phenomenon, increased energy consumption.
In the selection and configuration of the compressor , try to choose "1 +1" pattern matching , which uses a larger compressor with a small compressor mode or an equivalent load supporting two compressors to are in the best operating condition, rather than the full load condition. Selection of the compressor should be determined according to the actual size of the cooling effect and cooling capacity , the main basis for selection of the compressor compression ratio, displacement. Under normal circumstances a compression ratio of 3.2-3.4 compressor , the compressor stages of the energy efficiency of the compression is determined , in general, is 4-6 . Select the gas compressor and the required displacement to match and left margin of about 10% . If the compressor displacement gas consumption large and small , will cause the compressor discharge pressure is significantly reduced , and can not be driven pneumatic tools . The larger displacement compressor with a motor bigger, not only high prices, but also a waste of money to purchase , will be a waste of electrical energy use.
Selection and Configuration condenser technology
Currently , the most widely used foreign condenser is a condenser, which has fast heat exchanger completely , spray devices without clogging properties, it eliminates the need for investment in cooling towers and pumps and circulating pool of cooling water flow only water-cooled condenser 1 /10 , energy-saving effect is remarkable. During the construction of the conventional cold storage , you should try to choose mainstream evaporative condensers, not only to take advantage of natural conditions outside of refrigeration refrigerant , while both positive significance to reduce production costs.
Selection methods currently used evaporative condenser cooling load per unit area are estimating method and estimates - checking method. Cooling load per unit area of law that is the first rough estimate of the election of a condensing heat flux values , and then calculate the condensation area , select condenser models and calculations based on number of units . Estimates - checking method to calculate the following steps:
( 1 ) heat flux values were roughly calculate the condensation area ;
( 2 ) designed condenser coil structure , according to selection criteria with the air volume and distribution of water ;
( 3 ) design parameters determined by the air inlet air enthalpy , and then calculate the enthalpy of the air flow under the air outlet , condensate load ;
( 4 ) calculating the tube condensation heat transfer coefficient , water film heat transfer coefficient , thermal water film surface and the moist air mass equivalent heat transfer coefficient, thermal conductivity and thermal resistance of the selected layers ;
( 5 ) to calculate the heat transfer coefficient , the logarithmic mean temperature difference and the required condensing area . If the calculation results with the estimates do not match, then assume that the heat flux until the two are equal.
If you need to contact us to build cold storage official website or call our customer hotline 400-820-6368
With the continuous development of refrigeration technology, the rapid expansion of cold storage capacity , how to lower energy efficient cold storage has become a bottleneck restricting the development of cold storage . In this paper, how to configure the appropriate heat exchange system , how to improve the efficiency of heat transfer refrigeration system , how to reduce the loss of refrigerated cold process issues such as cold storage building through technical measures put forward reasonable suggestions .
Cold storage building technology energy-saving measures
Sensible heat exchange system configuration
Heat transfer system is the main energy system cold , mainly of a compressor, a condenser , an air cooler and the liquid tank and other components. How cold storage refrigeration effect , mainly in its selection and configuration, especially the compressor and condenser.
Selection and Configuration compressor technology
The compressor is one of the core components of the heat exchanger system design often used in cold storage at maximum load for the selection of the compressor, the compressor according to the load reasonable adjustments to reduce the number of units or the number of compressor cylinder , the system load and compression machine cold match against " big horse car " phenomenon, increased energy consumption.
In the selection and configuration of the compressor , try to choose "1 +1" pattern matching , which uses a larger compressor with a small compressor mode or an equivalent load supporting two compressors to are in the best operating condition, rather than the full load condition. Selection of the compressor should be determined according to the actual size of the cooling effect and cooling capacity , the main basis for selection of the compressor compression ratio, displacement. Under normal circumstances a compression ratio of 3.2-3.4 compressor , the compressor stages of the energy efficiency of the compression is determined , in general, is 4-6 . Select the gas compressor and the required displacement to match and left margin of about 10% . If the compressor displacement gas consumption large and small , will cause the compressor discharge pressure is significantly reduced , and can not be driven pneumatic tools . The larger displacement compressor with a motor bigger, not only high prices, but also a waste of money to purchase , will be a waste of electrical energy use.
Selection and Configuration condenser technology
Currently , the most widely used foreign condenser is a condenser, which has fast heat exchanger completely , spray devices without clogging properties, it eliminates the need for investment in cooling towers and pumps and circulating pool of cooling water flow only water-cooled condenser 1 /10 , energy-saving effect is remarkable. During the construction of the conventional cold storage , you should try to choose mainstream evaporative condensers, not only to take advantage of natural conditions outside of refrigeration refrigerant , while both positive significance to reduce production costs.
Selection methods currently used evaporative condenser cooling load per unit area are estimating method and estimates - checking method. Cooling load per unit area of law that is the first rough estimate of the election of a condensing heat flux values , and then calculate the condensation area , select condenser models and calculations based on number of units . Estimates - checking method to calculate the following steps:
( 1 ) heat flux values were roughly calculate the condensation area ;
( 2 ) designed condenser coil structure , according to selection criteria with the air volume and distribution of water ;
( 3 ) design parameters determined by the air inlet air enthalpy , and then calculate the enthalpy of the air flow under the air outlet , condensate load ;
( 4 ) calculating the tube condensation heat transfer coefficient , water film heat transfer coefficient , thermal water film surface and the moist air mass equivalent heat transfer coefficient, thermal conductivity and thermal resistance of the selected layers ;
( 5 ) to calculate the heat transfer coefficient , the logarithmic mean temperature difference and the required condensing area . If the calculation results with the estimates do not match, then assume that the heat flux until the two are equal.
If you need to contact us to build cold storage official website or call our customer hotline 400-820-6368