The following is a detailed introduction of air-cooled chiller of Kadeli chiller brand
Basic principle of refrigeration system: liquid refrigerant absorbs the heat of the cooled object in the evaporator, vaporizes into a low-temperature and low-pressure vapor, is sucked in by the compressor, and compressed into a high-pressure and high-temperature vapor and then discharged into a condenser, which exotherms to the cooling medium (water or air), and condenses into a high-pressure liquid, and then throttles down to a low pressure and low temperature refrigerant, and enters into the evaporator again to achieve the purpose of cyclic refrigeration. Throttle throttle for low-pressure low-temperature refrigerant, re-entering the evaporator to absorb heat and vaporize, to achieve the purpose of the refrigeration cycle. In this way, the refrigerant in the system after evaporation, compression, condensation, throttling four basic processes to complete a refrigeration cycle.
Air-cooled chiller mainly consists of closed scroll compressor, condenser, evaporator, fan, expansion valve and electronic control system.
Air-cooled chiller working principle diagram?
Compressor
Expansion valve
Filter drier
Evaporator
Condenser
Outside
Inlet
Tank
Pump
1.Compressor?
The compressor is the core of the entire air conditioning system, and is the source of system power. The power of the entire air conditioning, all provided by the compressor, the compressor is equivalent to a physical object by the low potential to move to a high potential place
to go, in the air conditioning it is the purpose of the low-temperature gas through the compressor compressed into a high-temperature gas, and finally the gas in the heat exchanger and other media for heat transfer. So the compressor will directly affect the whole effect of air conditioning.
Air-cooled water chillers generally use a hermetic scroll compressor. Totally enclosed scroll compressor: refrigeration capacity of 8 ~ 150KW, can be used in a variety of air conditioning, refrigeration equipment.
Totally enclosed scroll compressor, simple and compact structure, high performance, good sealing, low manic noise, for the future leading models.
Common brand: the United States and Germany COPELAND Copeland, France MANEUROP U.S. Yule, Japan HITACHI Hitachi, NATIONAL **, DAKIN Daikin, SANYO Sanyo, China Chunlan, etc.?
2. condenser
The role of the condenser is the compressor discharged high temperature and high pressure refrigerant superheated vapor cooled into liquid or gas-liquid mixture. Refrigerant in the condenser kind of heat released by the cooling medium (water or air) to take away.
Air-cooled chiller is generally used air-cooled condenser. Air-cooled condenser is to air as a cooling medium, the temperature rise of the air to take away the heat of condensation. This type of condenser is suitable for occasions where there is an extreme lack of water or water supply is not possible, and is commonly found in small Freon refrigeration units. According to the different ways of air flow, it can be divided into natural convection type and forced convection type. Air-cooled chillers use forced convection condensers.?
Forced convection air-cooled condenser are used in the structure of copper tube through the whole aluminum sheet. Aluminum sheet thickness of 0.2 ~ 0.3mm, sheet distance of 2 ~ 4mm. air-cooled condenser along the direction of air flow, often 2 ~ 8 rows of serpentine coils in parallel, head wind speed of 2 ~ 3m / s, Freon steam from the upper collector tube into each row of serpentine coils, condensate collection in the lower collector tube, and then into the reservoir.?
3. Evaporator
The role of the evaporator is to use the liquid low-temperature refrigerant evaporates easily at low pressure, transforms into vapor and absorbs the heat of the cooled medium to achieve the purpose of refrigeration.
Air-cooled chiller is generally used plate evaporator. Mainly by the frame and plate two major components. The plate is made of various materials made of thin plate with a variety of different forms of abrasives pressed into different shapes of corrugation, and in the four corners of the plate with corner holes for the media flow path. The periphery of the plate and the corner holes are sealed with rubber gaskets. The frame consists of fixed compression plate, movable compression plate, upper and lower guide rods and clamping bolts. The plates are mounted in a stacked form in the middle of the fixed compression plate and movable compression plate, and then clamped with clamping bolts.
The plate heat exchanger has high heat transfer efficiency, generally 3 times that of the shell and tube type, small volume, light weight, compact structure, easy to install.
4. Thermal expansion valve?
Thermal expansion valve is by feeling the evaporator outlet gaseous refrigerant superheat to control the refrigerant flow into the evaporator. So that the condenser out of the high-pressure liquid throttling pressure reduction, so that the liquid refrigerant in the low-pressure (low temperature) vaporization of heat absorption. In industrial cooling equipment, the general use of externally balanced thermal expansion valve.
The thermal expansion valve consists of an induction mechanism, an actuator, an adjustment mechanism and a valve body. The sensing mechanism is filled with Freon work material, and the temperature sensing package is set at the outlet of the evaporator, and there is a temperature difference between the temperature at its outlet and the evaporation temperature, which is usually referred to as the degree of superheat. The temperature sensing package senses the temperature of the evaporator outlet, so that the entire sensing system in the corresponding saturation pressure Pb. The pressure will be transmitted through the diaphragm to the top lever until the valve spool. In the upper part of the pressure chamber of the diaphragm only Pb exists, the diaphragm of the lower part of the spring force of the adjustment spring Pt and evaporation pressure P0, the three are in equilibrium when there is Pb = Pt + Po? When the evaporator heat load increases, the export superheat
degree of high, Pb increases, Pb>Pt+Po, the combined force to make the top lever, spool down, the thermal expansion valve opens to increase, the refrigerant flow rate increases proportionally. Conversely, the thermal expansion valve opens smaller, the refrigerant flow rate is proportionally reduced. Therefore, the refrigeration equipment is by the thermal expansion valve by controlling the degree of superheat to realize the self-adjustment of the refrigeration system.?
5. Fan
A fan is a machine equipped with one or more blades that propel airflow by rotating on a shaft. The blades convert the mechanical energy applied to the rotation of the shaft into the pressure that drives the flow of gas, thus realizing the flow of gas. The fan is composed of three main parts: the impeller (also known as turbine, wind wheel, rotor), the driving part (motor, transmission parts), the shell (also known as the worm shell, wind bucket).?
Air-cooled chillers generally use axial flow fans. When the axial flow ventilator works, the power machine drives the impeller to rotate in the cylindrical shell, and the gas enters from the collector, gains energy through the impeller, increases the pressure and speed, and then discharges along the axial direction, accelerating the circulation of the air around the chiller, thus increasing the rate of heat dissipation in the condenser.?
6. Filter drier
The role of the filter is: in order to prevent the refrigerant contains water or due to irreducible elements and other reasons to make the system into the water, when the high temperature from the condenser out of the liquid into the expansion valve, the temperature of the liquid will be a substantial drop in the liquid is generally below zero degrees, this time, if the system contains water, due to the expansion valve through the cross-section of the small If there is moisture in the system, the expansion valve will have a small cross-section, and it will be easy to appear ice blocking phenomenon, affecting the normal operation of the system.
7. Water pump
Air-cooled chiller is generally used to power centrifugal pump. Relying on the rotating impeller on the liquid power effect, the energy continuously transferred to the liquid, so that the liquid kinetic energy (mainly) and pressure energy increase, followed by
through the pressure out of the chamber will be converted into kinetic energy pressure energy for accelerating the flow of water tools to achieve the effect of strengthening the water in the heat exchanger heat exchanger.
8. Water flow switch
Water flow switch is used as the control of the fluid flow in the pipeline or cut-off protection, when the fluid flow reaches the adjusted value, the switch automatically cut off (or turn on) the circuit.
9. Pressure controller
Pressure controller used for pressure control and pressure protection, the unit has a low-pressure and high-pressure controllers, used to control the working range of the system's pressure, when the system pressure to the adjusted value, the switch automatically cuts off (or turn on) the circuit.
10. Differential Pressure Controller
Differential Pressure Controller is used for pressure difference control, when the pressure difference reaches the set value, the switch automatically cuts off (or turns on) the circuit
11. Temperature Controller
Temperature Controller is used for the control or protection of the unit, when the temperature reaches the set value, the switch automatically cuts off (or turns on) the circuit. In our products, the temperature control is often used to control the temperature of the water tank to control the start and stop of the unit. There are also some like anti-freezing need to use the temperature controller.
The basic principle of the refrigeration system: liquid refrigerant in the evaporator after absorbing the heat of the object being cooled, vaporized into a low-temperature, low-pressure vapor, the compressor is inhaled, compressed into a high-pressure, high-temperature vapors discharged into the condenser, in the condenser to the cooling medium (water or air) exothermic condensation of high-pressure liquids, throttled by the throttle valve throttle for the low-pressure, low-temperature refrigerant, re-entering the evaporator to absorb the heat of the vaporization to achieve cyclic refrigeration. To achieve the purpose of the cycle of refrigeration. In this way, the refrigerant in the system through evaporation, compression, condensation, throttling four basic processes to complete a refrigeration cycle.
Air-cooled chiller mainly consists of closed scroll compressor, condenser, evaporator, fan, expansion valve and electronic control system.
Air-cooled chiller working principle diagram?
Compressor
Expansion valve
Filter drier
Evaporator
Condenser
Outside
Inlet
Tank
Pump
1.Compressor?
The compressor is the core of the entire air conditioning system, and is the source of system power. The power of the entire air conditioning, all provided by the compressor, the compressor is equivalent to a physical object by the low potential to move to a high potential place
to go, in the air conditioning it is the purpose of the low-temperature gas through the compressor compressed into a high-temperature gas, and finally the gas in the heat exchanger and other media for heat transfer. So the compressor will directly affect the whole effect of air conditioning.
Air-cooled water chillers generally use a hermetic scroll compressor. Totally enclosed scroll compressor: refrigeration capacity of 8 ~ 150KW, can be used in a variety of air conditioning, refrigeration equipment.
Totally enclosed scroll compressor, simple and compact structure, high performance, good sealing, low manic noise, for the future leading models.
Common brand: the United States COPELAND Copeland, France MANEUROP U.S. Yule, Japan HITACHI Hitachi, NATIONAL **, DAKIN Daikin, SANYO Sanyo, China Chunlan, etc.?
2. condenser
The role of the condenser is the compressor discharged high temperature and high pressure refrigerant superheated vapor cooled into liquid or gas-liquid mixture. Refrigerant in the condenser kind of heat released by the cooling medium (water or air) to take away.
Air-cooled chiller is generally used in air-cooled condenser. Air-cooled condenser is to air as a cooling medium, the temperature rise of the air to take away the heat of condensation. This type of condenser is suitable for occasions where there is an extreme lack of water or water supply is not possible, and is commonly found in small Freon refrigeration units. According to the different ways of air flow, it can be divided into natural convection type and forced convection type. Air-cooled chillers use forced convection condensers.?
Forced convection air-cooled condenser are used in the structure of copper tube through the whole aluminum sheet. Aluminum sheet thickness of 0.2 ~ 0.3mm, sheet distance of 2 ~ 4mm. air-cooled condenser along the direction of air flow, often 2 ~ 8 rows of serpentine coils in parallel, head wind speed of 2 ~ 3m / s, Freon steam from the upper collector tube into each row of serpentine coils, condensate collection in the lower collector tube, and then into the reservoir.?
3. Evaporator
The role of the evaporator is to use the liquid low-temperature refrigerant evaporates easily at low pressure, transforms into vapor and absorbs the heat of the cooled medium to achieve the purpose of refrigeration.
Air-cooled chiller is generally used plate evaporator. Mainly by the frame and plate two major components. Plate made of various materials by a variety of materials made of thin plate with a variety of different forms of abrasives pressed into different shapes of corrugation, and in the four corners of the plate with corner holes for the media flow path. The periphery of the plate and the corner holes are sealed with rubber gaskets. The frame consists of fixed compression plate, movable compression plate, upper and lower guide rods and clamping bolts. The plates are mounted in a stacked form in the middle of the fixed compression plate and movable compression plate, and then clamped with clamping bolts.
The plate heat exchanger has high heat transfer efficiency, generally 3 times that of the shell and tube type, small volume, light weight, compact structure, easy to install.
4. Thermal expansion valve?
Thermal expansion valve is by feeling the evaporator outlet gaseous refrigerant superheat to control the refrigerant flow into the evaporator. So that the condenser out of the high-pressure liquid throttling pressure reduction, so that the liquid refrigerant in the low-pressure (low temperature) vaporization of heat absorption. In industrial cooling equipment, the general use of externally balanced thermal expansion valve.
The thermal expansion valve consists of an induction mechanism, an actuator, an adjustment mechanism and a valve body. The sensing mechanism is filled with Freon work material, and the temperature sensing package is set at the outlet of the evaporator, and there is a temperature difference between the temperature at its outlet and the evaporation temperature, which is usually referred to as the degree of superheat. The temperature sensing package senses the temperature of the evaporator outlet, so that the entire sensing system in the corresponding saturation pressure Pb. The pressure will be transmitted through the diaphragm to the top lever until the valve spool. In the upper part of the pressure chamber of the diaphragm only Pb exists, the diaphragm of the lower part of the spring force of the adjustment spring Pt and evaporation pressure P0, the three are in equilibrium when there is Pb = Pt + Po? When the evaporator heat load increases, the export superheat
degree of high, Pb increases, Pb>Pt+Po, the combined force to make the top lever, spool down, the thermal expansion valve opens to increase, the refrigerant flow rate increases proportionally. Conversely, the thermal expansion valve opens smaller, the refrigerant flow rate is proportionally reduced. Therefore, the refrigeration equipment is by the thermal expansion valve by controlling the degree of superheat to realize the self-adjustment of the refrigeration system.?
5. Fan
A fan is a machine equipped with one or more blades that propel airflow by rotating on a shaft. The blades convert the mechanical energy applied to the rotation of the shaft into the pressure that drives the flow of gas, thus realizing the flow of gas. The fan is composed of three main parts: the impeller (also known as turbine, wind wheel, rotor), the driving part (motor, transmission parts), the shell (also known as the worm shell, wind bucket).?
Air-cooled chillers generally use axial flow fans. When the axial flow ventilator works, the power machine drives the impeller to rotate in the cylindrical shell, and the gas enters from the collector, gains energy through the impeller, increases the pressure and speed, and then is discharged along the axial direction, accelerating the circulation of the air around the chiller, thus increasing the rate of heat dissipation from the condenser.?
6. Filter drier
The role of the filter is: in order to prevent the refrigerant contains water or due to irreducible elements and other reasons to make the system into the water, when the high temperature from the condenser out of the liquid into the expansion valve, the temperature of the liquid will be a substantial drop in the liquid is generally below zero degrees, this time, if the system contains water, due to the expansion valve through the cross-section of the small If there is moisture in the system, the expansion valve will have a small cross-section, and it will be easy to appear ice blocking phenomenon, affecting the normal operation of the system.
7. Water pump
Air-cooled chiller is generally used to power centrifugal pump. Relying on the rotating impeller on the liquid power effect, the energy continuously transferred to the liquid, so that the liquid kinetic energy (mainly) and pressure energy increase, followed by
through the pressure out of the chamber will be converted into kinetic energy pressure energy for accelerating the flow of water tools to achieve the effect of strengthening the water in the heat exchanger heat exchanger.
8. Water flow switch
Water flow switch is used as the control of the fluid flow in the pipeline or cut-off protection, when the fluid flow reaches the adjusted value, the switch automatically cut off (or turn on) the circuit.
9. Pressure controller
Pressure controller used for pressure control and pressure protection, the unit has a low-pressure and high-pressure controllers, used to control the working range of the system's pressure, when the system pressure to the adjusted value, the switch automatically cuts off (or turn on) the circuit.
10. Differential Pressure Controller
Differential Pressure Controller is used for pressure difference control, when the pressure difference reaches the set value, the switch automatically cuts off (or turns on) the circuit
11. Temperature Controller
Temperature Controller is used for the control or protection of the unit, when the temperature reaches the set value, the switch automatically cuts off (or turns on) the circuit. In our products, the temperature control is often used to control the temperature of the water tank to control the start and stop of the unit. There are also some like anti-freezing need to use the temperature controller.