Steam Type Chiller for Shuangliang

Shuangliang steam absorption chiller

The company's main business scope includes: customized processing of lithium bromide solution; sales of lithium bromide special filters; sales of central air-conditioning chillers; sales of various parts of central air-conditioning.

Wide range of uses

Lithium bromide solution is used as a working fluid to produce low-temperature refrigerant water, which is used as a cold source in air conditioning systems and technological processes. It can be widely used in industrial and mining enterprises such as textiles, chemicals, electronics, and food, and can also be used in hotels, theaters, and hospitals. , Buildings and other occasions.

Especially suitable for the following places: users who use waste heat from thermal power plants;

Plants with waste heat boilers (such as process-type air conditioners in steel, petrochemical and other industries);

Users who have the use of process waste heat (factory buildings);

H2 steam double-effect lithium bromide absorption chiller

Steam-type lithium bromide refrigeration equipment is divided into: single-effect type and double-effect type. Steam single-effect lithium bromide absorption chiller is a kind of equipment that uses low pressure or normal pressure steam as the driving heat source, lithium bromide solution as the absorbent, and water as the refrigerant to prepare cold water for process or air conditioning.

Function: Produce cold water above 5℃ for central air conditioning or industrial process cooling.

Core technology to fully guarantee the unit

1. The evaporator adopts the spray method

The evaporator adopts the unique showering method to make the liquid distribution more uniform, the heat transfer area is more fully utilized, the thickness of the heat transfer tube liquid film is reduced, the heat transfer effect is enhanced, the efficiency of the unit is improved, the energy consumption of the unit is reduced, and the refrigerant pump is reduced. power.

2. The heat exchange tube of the evaporator adopts a brand-new tube type and layout

The evaporator adopts a special heat exchange tube type processed by a unique process, which is more hydrophilic and is not easy to scale. Combined with the best heat exchange tube arrangement, the liquid distribution of the entire tube bundle is more uniform and the efficiency of the unit is improved. Energy consumption.

3. Antifreeze pipe technology of evaporator

The refrigerant water of the condenser flashes directly into the evaporator water tray, and the evaporator inlet is equipped with a filter screen to eliminate the hidden dangers of the freezing pipe; multiple anti-freezing pipe safety protections such as cold water cut-off, cold water low temperature, and refrigerant water low temperature are avoided. To prevent the occurrence of frozen pipe accidents and improve the reliability of the unit.

4. New high-efficiency heat exchange tube type and structure type of the high-pressure generator.

The new type of high-efficiency heat transfer tube structure enhances the heat transfer effect, has a more compact structure, improves the efficiency of the unit, and reduces the energy consumption of the unit.

5. Inclined layout of low-voltage generators

Reduce the static liquid column, reduce the generating pressure, increase the heat transfer temperature difference, enhance the heat exchange effect, improve the efficiency of the unit, and reduce the energy consumption of the unit.

6. New high-efficiency solution exchange heat exchanger technology

The heat exchanger adopts a new and efficient heat transfer tube and a brand-new structure, which perfectly combines the velocity field and temperature field of the solution to ensure the pure countercurrent heat exchange of the two fluids, greatly reduces the heat exchange temperature difference at the end, and fully recovers the heat of the solution. Improve unit efficiency and reduce unit energy consumption.

7. The heat transfer tube adopts special surface treatment technology

The heat transfer tube adopts special surface treatment technology, which improves the wettability and area utilization rate of the solution and refrigerant water on the surface of the heat transfer tube, enhances the heat exchange effect, improves the efficiency of the unit, and reduces energy consumption.

8. Liquid inlet cooling technology for automatic air extraction device

The solution entering the automatic air extraction device is cooled by refrigerant water, which improves the effect of solution ejection and air extraction, thereby improving the performance and reliability of the unit.

9. New high-efficiency automatic air extraction system

Shuangliang’s unique high-efficiency pumping device combined with the best arrangement of internal pumping points greatly improves the pumping effect. According to the change of the self-pumping pressure, the user is automatically prompted to perform the pumping operation, and the performance and reliability of the unit are greatly improved.

10. Solution series circulation frequency conversion technology

The unit automatically adjusts the frequency of the solution pump according to the operating state to ensure that the solution circulation is always in the best state, making the control more sensitive, the adjustment range more refined, improving the stability and efficiency of the unit, and saving the power consumption of the solution pump.

Working principle

The steam dual-effect lithium bromide absorption chiller is a device that uses steam as the driving heat source, lithium bromide solution as the absorbent, and water as the refrigerant to prepare cold water for process or air conditioning.

The unit consists of high-pressure generator, low-pressure generator, condenser, evaporator, absorber and high-temperature heat exchanger, low-temperature heat exchanger, condensate heat exchanger and other main components, as well as canned motor pumps (solution pump and refrigerant pump), It is composed of auxiliary parts such as vacuum pump and air extraction device, which is a combination of several shell-and-tube heat exchangers. And the air extraction device and vacuum pump ensure that the unit is always in a vacuum state.

Evaporator: The 12°C cold water from the external system flows through the evaporator heat exchange tube, and the low-temperature refrigerant water irrigated outside the tube evaporates and absorbs heat. After the temperature drops to 7°C, it returns to the external system. The refrigerant water obtains the heat of the external system, vaporizes into water vapor, and enters the absorber.

Absorber: Lithium bromide concentrated liquid with strong ability to absorb water vapor is leached outside the heat exchange tube of the absorber to absorb the water vapor generated in the evaporator, and the concentration becomes thinner. The cooling water from the cooling tower flows through the absorber heat exchange tube to take away the heat generated by the solution to absorb water vapor (that is, the heat of the external system). The diluted solution collects at the bottom of the absorber, is pumped out by the solution pump, and enters the high-pressure generator after being heated by the heat exchanger.

High-pressure generator (referred to as Gaofa): The high-temperature working steam heats the solution to generate a large amount of water vapor, and the solution is concentrated into an intermediate solution. The intermediate solution enters the low-pressure generator after high-temperature heat exchange, heat exchange and cooling, and the water vapor also enters the low-pressure generator.

Low-pressure generator (referred to as low-pressure generator): After the temperature is lowered, the intermediate solution that enters the low-pressure generator is heated again by the high-emission water vapor to generate water vapor, and the concentration is further concentrated. The concentrated solution flows back to the absorber after heat exchange and cooling by the low-temperature heat exchanger, and the generated water vapor enters the condenser. The high-emission water vapor condenses into water after heating the solution, and enters the condenser after throttling.

Condenser: The cooling water flows through the condenser heat exchange tube, condensing the water vapor outside the tube into water. The condensed water enters the upper groove of the evaporator through the U-shaped tube.

Low-temperature heat exchanger: heat exchange the concentrated solution from the low emission with the dilute solution from the absorber to heat the dilute solution and recover the heat of the concentrated solution.

Condensate heat exchanger: The working steam condensate exchanges heat with the dilute solution heated by the low temperature heat exchanger, so that the dilute solution is heat exchanged, and the dilute solution is further heated.

High-temperature heat exchanger: The intermediate solution from the high heat exchanges heat with the dilute solution heated by the condensate heat exchanger to further increase the temperature of the dilute solution. The heat exchanger reduces the heat required for the heating of the high-pressure generator, and at the same time reduces the cooling water load required to cool the concentrated solution. Its performance is decisive for the energy saving of the unit.

Computer room construction summary

Computer room civil construction site selection

As the unit has the characteristics of fewer operating parts, safe and stable operation, and less vibration and noise, the site of the machine room can be selected in the basement, ground, middle and above floors, and roof, etc., but it should be convenient for the installation and maintenance of the unit, due to the noise of the pump And the vibration is large, the unit and the water pump should not be placed in the same room.

Machine room size

The size of the machine room is related to the size of the unit. It is recommended that the size of the machine room is not smaller than the figure below. In the figure, A\B\C is the extubation space. One section of the unit can also be facing the door or window, and the door or window can be used as the extubation space. It is recommended that the height of the machine room is more than 200mm higher than the unit.

Room temperature

The temperature of the equipment room should be controlled at 5-40°C.

Computer room humidity

The equipment room should ensure sufficient ventilation. Poor ventilation will cause humidity in the equipment room, and high humidity will corrode the unit and affect electrical insulation. The humidity in the equipment room should be controlled below 90%.

Drain

Drainage ditch should be provided around the unit with cast iron orifice plate on it, and water in the ditch should be able to flow out of the machine room smoothly. The basement engine room should be equipped with a collection tank and a submersible pump, and the submersible pump should be equipped with an automatic control device that can automatically drain. All drain pipes and signal pipes in the equipment room should be placed in a visible place on the hook and cannot be buried in the trench.

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