Aray City Mall: two absorption chillers, one on hot water, one gas-fired
In brief. At a shopping mall in Kyzylorda, two Thermax absorption chillers of 1,100 kW each: the 5G 4L C runs on gas engine hot water, the 2V 3L C on natural gas. In a letter, the owner confirms that the machines work properly.
At the Aray City Mall shopping and entertainment center in Kyzylorda, cooling is made by two Thermax lithium bromide absorption chillers of 1,100 kW each: one runs on gas engine hot water, the other on natural gas. Heat rejection is provided by two NCT cooling towers. The mall opened in August 2018.
| Parameter | Data |
|---|---|
| Industry | Commercial real estate, shopping and entertainment center |
| City | Kyzylorda, Kazakhstan |
| Generation | Gas engines |
| Heat | Gas engine hot water and natural gas |
| Absorption chiller | Thermax 5G 4L C on hot water and Thermax 2V 3L C on natural gas, 1,100 kW each, 12/7 °C water |
| Heat rejection | 2 NCT VR series cooling towers, 2 NCT W2C chemical water treatment units |
| What the cooling is for | Shopping mall air conditioning |
| Our work | Supply, installation supervision, commissioning. The owner's letter also mentions design |
What was the task?
The mall needs cooling for air conditioning. The machines are different: one runs on engine heat, the other has its own gas burner and does not need the engine. The engineering logic of this pair: cooling does not depend on whether the engine is running.
How does the scheme work?
The classic: gas engine and a hot water absorption chiller
The 5G 4L C machine takes the engine heat and produces 12/7 °C water. NCT cooling towers reject the heat. If the engine is stopped or there is not enough heat, the second machine runs.
Machine with a burner: cooling even without the engine
The Thermax 2V 3L C machine on natural gas runs independently of the gas engine. This scheme gives the shopping mall cooling even when the engine is stopped.
What was the result?
In a letter, the owner thanks us for design, supply, installation supervision and commissioning, and writes that both machines and the two NCT cooling towers work properly in the trigeneration system and save electricity. The letter contains no figures.
Photos of the facility
Customer letter
The letter has no date on the scan; news of the review was published on 27 February 2020.
If you have a similar task, order a feasibility study or estimate the numbers in the calculator. Related pages: shopping malls and feasibility study for a shopping mall. How the machines work is described on the Thermax absorption chillers page; other examples are collected in the "Our projects" section, and there are many others.
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