Lithium Bromide Absorption Chiller for waste heat recovery

Absorption Chiller is an equipment which uses heat source from natural gas or diesel, solar energy and waste heat to produce a cooling process.  As its practical function, absorption chiller is normally installed in air-conditioning building such as factory, office, hospital or airport. Specially, this machine uses the waste heat from gas engine or solar energy.


Although the electricity is in limited situation, absorption chiller also can activate. Furthermore, it only consumes a small amount of electricity in the systems, compared to electrical chillers.

During the process, the absorption chiller uses a solution of lithium bromide (LiBr) as the absorbent and water as the refrigerant. The reason a lithium bromide because of not being a hazardous chemical.  Another outstanding characteristic is non-CFCs and non-HFCs which are harmful to the environment.

Here are more advantages of Absorption chiller:  Driving power from Heat Energy, Less usage of electricity, Easy maintenance, low maintenance costs, Less noise and vibration, Non- non-CFCs or Non-HFCs refrigeration and Environmental-friendly system.



Firstly, a mixture of lithium bromide and water in the absorber is pumped through the heat exchanger to the generator

In order to separate the mixture in the generator, heat source from hot water, steam or flue gas will change water to vapor leaving the lithium bromide behind. Then, the vapor will flow into the condenser.

The lithium bromide won’t be left as a waste. It will form as a liquid and sink to the bottom of the generator. After that, the lithium bromide liquid flows down to the absorber once more through the heat exchanger. This liquid will spray over the absorber, so it will absorb vapor in the absorber again.

Meanwhile, the vapor from the generator is condensing into a refrigerant in condenser . Because of that, it meets with a cooling coil, whose water from cooling tower flows inside to remove heat from the vapor.

Next, the refrigerant kept in a tray flow through a pipe to the evaporator. A fixed orifice controls the volume flow rate of refrigerant. Due to vacuum condition in the evaporator, the boiling temperature of water will be quite low.

Finally, the chilled water which carries all the unwanted heat from the building or any cooling process flows through the evaporator to extract the unwanted thermal energy by spraying refrigerant over the chilled water line. Therefore, the chilled water temperature will be decreased from 12°C to 7°C.

Shuang Liang Waste Heat Recovery Solution Provider

Shuangliang has dedicated to the study of industrial waste heat recovery over 3 decades. As endless attempt, Shuangliang is gradually developing from as equipment supplier into a system provider.

About 60% of all energy generated in the world is left as a waste heat. Unfortunately, most of the waste heat will be degraded as traditional heat recovery technologies can’t activate effectively. From this point, Shuangliang  Eco-Energy System Co., Ltd. wants to solve this problem by turning it to useable energy.

Shuangliang Eco-Energy Systems Co., Ltd. has been founded since 1982. According to the expertise, it is the first and only listed company in the absorption chiller industry. Eventually, the company joined with Shuangliang Group, a large enterprise that provides manufacturing, chemical and materials, and hotel services.


  •       Flue Gas Lithium Bromide Absorption Chiller
Flue Gas Operated Absorption Chiller
Flue Gas Operated Absorption Chiller

Flue gas absorption chiller is applied as an important role of the tri-generation system. Normally, generator produces electricity while exhaust heat drives an energy of absorption chiller. According to this process, the generator can provide heating or cooling for any communities and buildings.

As a combination of cooling, heating , flue gas absorption can provide its capacity utilization and efficiency up to 85%. Moreover, the gas absorption enhances powers afety from the grid and leads more electricity saving. From several advantages, flue gas absorption chiller is able to level up environmental protection and sustainable economic development.

A tri-generation system plays as a critical role in decreasing electricity shortage. Therefore, the system reduces the dependency of grid for domestic and commercial cooling system. Flue-gas fired lithium bromide absorption chiller or heat pump can make the most benefit of low potential heat energy utilization. Also, it realizes cascade application of prime energy resource and brings the greatest amount of energy saving.

  •      Direct Fired Lithium Bromide Absorption Chiller


Direct-Fired Absorption Chiller
Direct-Fired Absorption Chiller


Due to environmental issues, Shuangliang eco-energy systems creates energy-efficiency absorption unit by burning oil and gas. It is energized by using heat of different levels. After that, the chiller can produce chilled water at 5 °C to 7 °C used mostly in air conditioning system.

  •      Steam Lithium Bromide Absorption Chiller

Steam Lithium Bromide Absorption chiller
Steam Lithium Bromide Absorption chiller

One of the most famous absorption chillers is Steam Lithium Bromide Absorption chiller. This absorption chiller can take advantage of waste heat to produce chilled water, also called energy-efficient units. Its resulting water will be about 5°C to 7°C which is useful for air conditioning system. Furthermore, the absorption chiller with steam pressure of 0.01 – 0.15 Mpa provides a cooling capacity of 350~11630 kW.

Hydrogen double effect lithium bromide absorption unit represents as an important industrial equipment using water as refrigerant and lithium bromide as absorbent.

Hydrogen double-effect absorption chiller is useful for ample steam supply. As its characteristic, this absorption chiller can reduce overused of electricity, operating costs and balance loads.

The most outstanding function of SHUANGLIANG Hydrogen type steam operated double effect chiller is about energy saving. Especially, High COP of 1.43 ranks Shuangliang Hydrogen type steam operated chiller is also in the leading position worldwide.

  •       Hot Water Fired Lithium Bromide Absorption Chiller

Hot Water Operated Absorption Chiller
Hot Water Operated Absorption Chiller

Hot water is applied as a main role of two-stage absorption chiller. This equipment uses water as refrigerant and lithium bromide as absorbent. There are two types of specifications: standard specification and non-standard specifications. Standard specification of hot water range is about 90 °-130 °C. Non-standard specification is for special temperature beyond the standard range. The cooling capacity of hot water operated absorption chiller is between 350 kw and 6890 kw. As a result of that, the resulting chilled water’s temperature is about between 5 °C and 7 °C which is useful for industrial process. In order to recover waste heat, using waste water to produce useful chilled water is one of our effective ways to save energy.

Moreover, Shuangliang two-stage hot water absorption chiller is also practical in plenty of water areas. The chiller helps reduce overused of electricity and operating costs.

Benefit / Shuangliang Absorption Chiller

        Technical Advantages

          1.Two Pumps and without Spray Nozzles


LR Absorber SL
LR Absorber SL

      Outstanding design is absorbers with dripping plates instead of spray nozzles. Plus, it has Left-Middle-Right arrangement: absorber-evaporator-absorber. This configuration will help avoid the decrease of cooling capacity and prolong the operation of chiller. Furthermore, the absorption chiller does not need to use spray pump, since the solution goes down with gravity flow in absorber part.

          2. State-of-the-Art Liquid Heat Exchanger

High-efficiency heat transfer tubes with new flow pattern can also reduce flow pressure drop.

          3. Distribution of Refrigerant by Dripping Plates in the Evaporator

Dripping plate
Dripping plate

Dripping plates is the most famous function because of reducing liquid film thickness and  improving operating efficiency.

          4. High Quality Tubes and Optimized Flow Arrangement in Evaporator

Flow Patern
Flow Patern

High quality tubes ensure the distribution of heat transfer effect in the evaporator which enhances heat transfer efficiency.

          5.Special Construction of High-Pressure Generator for Direct-Fired Chiller

Special Direct Fired
Special Direct Fired

This exclusive construction, which is inside solution tubes and wet back of combustion chamber, improves operation safety and reduces fuel consumption.

          6.Heat Transferring Technology

Our advanced technology of heat transferring ensures safer operation and extends life cycle. Apart from that, this also enhances higher heat transfer efficiency.

          7. Anti-Freezing Technology

Evaporator tubes are protected from freezing. It is realized by collecting the refrigerant water from the condenser at the bottom chamber of the evaporator, and then pumped to the dripping plates. In addition, the refrigerant dripping process would stop immediately if the refrigerant pump was powered off.

          8. Serial Flow of Solution


Series Flow Solution
Series Flow Solution

Serial Flow of Solution improves reliability and control of chiller because of free from crystalization.

          9. Non-condensable Gas Purging System

Air inlets of purging device arranged inside the unit to ensure optimum air suction performance.

         10.Non-condensable Gas Auto Discharge System

Non-condensable Gas Auto Discharge System controls the start-up and shutdown of the valve . In addition, the systems activates by the High-Low pressure settings of auto-purging cylinder.

         11. SL Remote

SL Remote monitoring system is based on Shuangliang internal servers. Therefore, users can easily visit through website with the right registered account and password to look through chiller information.

Functions: data collection, online monitoring, data storage and management, data analysis and expert diagnosis, fault early warning and alarm.

       Commercial Advantages

  1. Lowest Social Cost

In contrast with compression chiller, Shuangliang absorption chiller helps save amount of investment such as power station . To save your operation cost, our product is one of your best choices for sure.

  1. Competitive Price

Due to practical design, it reduces costs on production and shipping expenses. Also, our advanced concept can lower manufacturing cost, be assured of its capability and optimize customization.

  1. Quick Time-to-Market

As our great proficiency, your desired absorption chiller can be possible in short time.

More opportunities for customers to get a better-quality chiller at a lower price result from reducing production cost. The more working environment is improved, the more working efficiency is also improved. Above all, all these advantages guarantee customer’s satisfaction for a long time.

Solution & Service


  • Design

Professionals at our postdoctoral station, state-level enterprise technology center ensures an accurate design of your desired equipment.

  • Production

Shuangliang has the largest production line in the world absorption chiller industry with Demand Flow Manufacturing technique (DFM) in production process. With advanced techniques and equipment, our customers can ensure the maximum reliability of finished products

Project Design
Project Design
  • Quality Guarantee

Before installing in customer’s site, each product needs to be checked by helium leak detectors at a leakage rate of 1×10-10 Pa·m3/s .Normally, it’s much lower than 2.03 ×10-6 Pa·m3/s specified by Japanese Industrial Standard.This process guarantees the quality of finished products.

  •  Performance Test

When you choose from SHUANGLIANG products , you can assure of high quality with an absorption unit that provides decades of care-free performance.

  •  Project Design

Since customer is our priority, Shuangliang experienced team promises to design the best solution for your project.

  •  Onsite Installation

To make sure of your onsite installation, our experienced technicians will look after this process. Therefore, your project will be finished on time and with high quality.

  •   Commissioning

After installation, our technicians would commission the units while maintaining 24-hour remote control over the whole system. This process ensures the product quality and service life.

onsite Installation
onsite Installation



After-Sales Service

  • Training Program

The operators training program will be held on a regular basis .The program provides our sales agents and equipment users with professional theoretical knowledge.

  •  Service after Purchase

Shuangliang ’s professional service team makes sure that each of our 20,000 equipment sets we sold can be delivered in time, effective, and corrective maintenance service.

Service after Purchased
Service after Purchased

Shuangliang Reference

Honda Automobile (Thailand) Co., Ltd., (Factory) Thailand

honda thailand
Honda Thailand

Chiller Type: Shuangliang Flue gas absorption chiller and Hot water absorption chiller utilizing with Jenbacher JMS 620 gas engine

Total cooling capacity: 860 USRT

  • Honda Automobile(Thailand) Co., Ltd., is automobile manufacturer is in the Rojana Industrial estate, Phra Nakorn Si Ayutthaya Province. It needs to build a stability power station system and energy saving with the Tri-Generation system.
  • Honda Automobile project uses main power generation by Jenbacher Gas Engine and Natural gas as the fuel. The waste heat from the power generation system is used to produce the cooling capacity.

Shijiazhuang People’s Hospital

Shijiazhuang People's Hospital
Shijiazhuang People’s Hospital

Chiller Type: Shuangliang Flue Gas and Hot Water operated absorption chiller

Total Cooling Capacity: 1,680 USRT x 2 units

The main equipment includes:

  • Combustion Gas Engine 2 Megawatt x 2 units
  • Flue Gas & Hot water LiBr Absorption Chiller x 2 units
  • Centrifugal Chiller x 3 units
  • Hot water / Gas-fired Boiler x 3 units
  • Heat Exchanger x 3 units

Economic and Environmental benefits:

  • Increasing use rate of cooling, heating and power generation 86.6%
  • Compared with conventional coal-fired thermal power plants.
  • Saves 2974.35 t/a of standard coal per year with an energy-saving rate of 27%
  • CO₂ emission reduction 12156.18 t/a with a reduction rate of 48%

Pfizer Asia Pacific Pte. Ltd., Singapore

Pfizer Asia Pacific Singapore
Pfizer Asia Pacific Singapore

Chiller Type: Shuangliang Steam operated absorption chiller

Total cooling capacity: 2000 USRT

Power Generation: Solar gas turbine and Heat Recovery Steam Generator

Chiller: 3 sets Shuangliang steam chiller

  • Absorption chiller cooling capacity: 3 x 2330 Kilowatt
  • Pfizer Asia Pacific Pte. Ltd. is a base of Pfizer Inc., which is the world’s largest research-based pharmaceutical company.
  • Located within Tuas Biomedical Park, Pfizer’s Active Pharmaceutical Ingredients (API) manufacturing plant started operations in 2003.
  • The site covers about 22 acres and employs close to 400 colleagues.

Shuangliang award 

Shuangliang Eco-Energy has received Special award-winning of the China Distributed Energy Excellent for 7 Years consecutively

Shuangliang ‘s award


  •          2020 Shijiazhuang People’s Hospital
  •          2019 Xiangjiang Happy City
  •          2018 Zhuhai Hengqin Intelligent Energy
  •          2017 Wuhan International Expo Center
  •          2016 China National Convention and Exhibition Center
  •          2015 Shanghai Disney Resort
  •         2014 China Petroleum Technology Energy Center

Shuangliang Eco-Energy will continue to be driven by technological innovation. Also, it focus on energy conservation and environmental protection industries, and provide advanced support for green development.