Direct-fired Chiller For Shuangliang
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Direct-fired Chiller for Shuangliang

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.

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Product Introduction

Shuangliang Direct-fired Absorption Chiller

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.

The direct-fired lithium bromide absorption chiller (warm) water unit is a kind of equipment that uses the combustion heat of fuel oil and gas as the driving heat source, and uses lithium bromide aqueous solution as the absorbent and water as the refrigerant to prepare cold and warm water for air conditioning or processing. .

Function: To produce cold water above 5℃, and hot water not higher than 95℃ for air conditioning or industrial process cooling or heating system.

Cooling capacity: 233~11630KW (20~1000×104kcal/h)/186~9280KW (16~800×104kcal/h)

Energy: natural gas, light oil, heavy oil, artificial gas, other petrochemical fuels, hydrogen

Adopting Shuangliang lithium bromide absorption refrigeration unit is a good choice to save power consumption.

Lithium bromide refrigeration units use thermal energy as a driving energy source and rely on a small amount of electricity to drive the operation of the canned motor pump. Compared with electric refrigeration units, the power consumption is only a few tenths, which greatly saves power consumption and reduces the investment in power distribution facilities.

Super energy-saving, ultra-low operating cost, direct-fired type COP value: 1.36

Low-level central air-conditioning energy waste is staggering, and the continuous energy shortage will affect the normal development of the economy. Saving energy means saving operating costs.

High air tightness is a decisive factor to ensure the quality of lithium bromide refrigerators

Lithium bromide refrigerators can only work normally under a constant high vacuum. A little air seeps into the unit, and the vacuum will drop, resulting in a decrease in cooling capacity. In the case of air infiltration into the unit, the corrosiveness of the lithium bromide solution increases. Corrosion causes a rapid shortening of the service life of the unit, and at the same time, corrosion will produce non-condensable gas, which further reduces the vacuum. Therefore, high air-tightness is a decisive factor to ensure the life of lithium bromide refrigerators, and it is also a key indicator for evaluating unit performance.

Main core aspects

1. Two-pump system, no nozzle technology: completely solve the problem of attenuation of cooling capacity. The absorber and evaporator are arranged in the left, middle and right arrangement. The spray absorption is replaced by the spray absorption in the absorber. The nozzle is removed and the spray pump is not required. This completely solves the large attenuation of the cooling capacity caused by the clogging of the nozzle and makes the bromine The service life of the chiller has risen from 3-5 years to more than 20 years.

2. Refrigerant water flash evaporation and reabsorption technology: improve unit efficiency and reduce unit energy consumption. The refrigerant water flash evaporation and reabsorption device increases the temperature of the dilute solution and reduces the concentration, which not only reduces the cooling water consumption, but also improves the efficiency of the unit and reduces the energy consumption of the unit. At the same time, the performance of the heat exchanger is greatly improved, so that The temperature of the concentrated solution at the outlet of the low-temperature heat exchanger is far away from the crystallization temperature to completely avoid the danger of crystallization.

3. The evaporator adopts the shower stimulation method: to improve the efficiency of the unit and reduce the energy consumption of the unit. The evaporator uses a unique showering method to make the liquid distribution more uniform, make full use of the heat transfer area, reduce the thickness of the liquid film on the surface of the heat transfer tube, enhance the heat transfer effect, improve the efficiency of the unit, reduce the energy consumption of the unit, and reduce the refrigerant Pump power.

4. The heat transfer tube of the evaporator adopts a brand-new tube type and arrangement: to improve the efficiency of the unit and reduce the energy consumption of the unit. The heat transfer tube of the evaporator adopts a new tube shape and layout, which makes the liquid distribution on the heat transfer tube more uniform, enhances the heat transfer effect, improves the efficiency of the unit, and reduces energy consumption.

5. Antifreeze tube technology: to avoid freezing and cracking of the heat transfer tube of the evaporator and improve the reliability of the unit. The refrigerant water from the condenser first enters the liquid sac at the bottom of the evaporator, and then is sent to the evaporative shower through the refrigerant pump to evaporate. This circulation mode can make the refrigerant pump stop working quickly when the refrigeration system suddenly loses power or cold water. The unit stops cooling to avoid freezing and cracking of the heat transfer tube of the evaporator.

6. Evaporator heating: higher heating efficiency, making the unit safer. Evaporator heating makes the unit safer and prolongs its service life. The heating efficiency is as high as 93.5%.

7. The solution in the low-pressure generator adopts a downstream method: it improves the efficiency of the unit and reduces the energy consumption of the unit. Reduce the static liquid column, reduce the pressure, increase the heat transfer temperature difference, and improve the heat transfer effect.

8. The special structure of the high-pressure generator: to provide the unit's efficiency and reliability, and to reduce the unit's energy consumption. The high-pressure generator adopts the wet-back structure of the water pipe, which is safer and more energy-saving.

9. The cooling water enters the condenser directly to improve the cooling effect. The cooling water is directly cooled, the condensation temperature is lowered, and the generation pressure of the low-pressure generator can be reduced, the refrigerant generation rate is accelerated, so that the condensation and absorption effects are optimized, the cooling water temperature difference is increased, the cooling water consumption is reduced, and the unit has a better performance The adaptability to ensure the economy of unit operation.

10. Solution series circulation technology: improve the reliability of the unit. The solution series circulation technology can make the running state of the solution farther away from the crystallization line, avoid crystallization, make the operation safer and more reliable, and make the adjustment easier.

11. The new high-efficiency solution heat exchanger further improves the temperature efficiency and greatly reduces the energy consumption. The heat exchanger adopts a new high-efficiency heat transfer tube and a new structure and solution flow method, which enhances the heat exchange effect and fully recovers the heat of the solution.

12. The heat transfer tube adopts special surface treatment technology to improve the efficiency of the unit and reduce energy consumption. The heat transfer tube adopts special surface treatment technology to further improve the wettability of the solution on the surface of the heat transfer tube.

13. The high-efficiency automatic air extraction system improves the performance and reliability of the unit. The high-efficiency automatic air extraction device and the arrangement of internal air extraction points greatly improve the air extraction effect.

14. The original heating and air extraction technology solves the problem that the direct-fired engine can not extract air in the heating operation.

Principle of operation