What does a 500 ton absorption chiller require?
It is calculated by dividing the cooling output by the required heat input. For example, a 500-ton absorption chiller operating at a COP of 0.70 would require: (500 x 12,000 Btu/h) divided by 0.70 = 8,571,429 Btu/h heat input.
How much does absorption chiller cost?
Installed costs range from $1,800 to $6,000 per ton for the three single stage systems, and from $1,600 to $3,300 per ton for the four two stage chillers.
How efficient are absorption chillers?
Looking at Graph 1, all three types of absorption chillers are most efficient at 50% part load with the single-effect indirect-fired chiller having a 9.4% increase in efficiency; the double-effect direct-fired chiller having a 10% increase in efficiency; and the double-effect indirect-fired chiller having a 16.7% …
What is an absorption chiller used for?
Absorption chillers can be used for both heating and cooling purposes simultaneously, by using the process cooling water from the absorber and the condenser. The most efficient modern absorption cycle chillers use water as the refrigerant and a solution of lithium bromide (LiBr) as the absorbent.
How is police absorption chiller calculated?
The COP can be thought of as a sort of index of the efficiency of the machine. It is calculated by dividing the cooling output by the 299 Page 2 required heat input. For example, a 500-ton absorption chiller operating at a COP of 0.70 would require: (500 x 12,000 Btu/h) divided by 0.70 = 8,571,429 Btu/h heat input.
How can I check my chiller police?
Take for example a chiller which is producing 2,500kW of cooling or 8,533,364BTU/h in metric units. The electrical power demand of the chiller to produce this is 460kW. The metric calculation would be: 2,500kW / 460kW = 5.4 so the COP is 5.4.
Do absorption chillers use electricity?
When it operates, an absorption chiller produces chilled water while consuming just a small amount of electricity to run the pumps on it. And it will continue bringing out the heat from the building as it goes through the heating and cooling cycle.
How is COP of absorption chiller calculated?
What is the disadvantage to installing an absorption unit?
Two basic disadvantages of absorption chillers are their size – weight, as well as their requirement for larger cooling towers. Absorption chillers are larger and heavier compared to electric chillers of the same capacity.
How do adsorption chillers work?
In contrast, an adsorption chiller—which is made up of an evaporator, two adsorption chambers, and a condenser—warms the gas back to a liquid without using any moving parts. The gel also lowers the humidity inside the evaporator, which allows the water refrigerant to evaporate at a low temperature.
What is a good chiller COP?
For water cooled chillers, the minimum COP is 4.2 and the minimum IPLV is 5.2; for air cooled chillers the minimum COP is 2.5 and the minimum IPLV is 3.4. In general, water cooled chillers are more compact, less noisy, have longer operating lives and are more energy efficient than air cooled chillers.
What is EER of chiller?
The EER is the relationship between the cooling capacity of chiller and the total power consumption of the refriger- ation unit (compressors + fans). This chart above refers to an air cooled chiller with R-134A refrigerant, with inlet wa- ter temperature of 12°C and outlet water temperature of 7°C.
What can be used in an absorption chiller?
In addition to hot water and steam, absorption chillers can also be exhaust fired (required exhaust temperatures typically above 750F).° Refrigerant / Absorbent For 40°F and higher chilling fluid temperatures (e.g., building air conditioning), a common mixture is water (refrigerant) and lithium bromide (absorbent).
What’s the temperature of A Trane classic absorption chiller?
The Trane Classic single-stage absorption chiller is designed to use steam at pressures up to 14 psig and at temperatures to 340°F, or hot water temperatures up to 270°F. These chillers are ideal for situations requiring chilled water in the range of 40-50°F.
Which is more efficient single stage or two stage chillers?
All seven systems deliver 44°F chilled water based on an inlet water temperature of 54°F. The three single stage absorption chillers have COP values of 0.70 to 0.79, and the four two stage units, which are more efficient compared to single stage designs, have COP values of 1.35 to 1.42.
How are water chillers used to cool buildings?
Chillers make cold water or water/glycol fluid mixture in order to cool buildings or processes. Often used in conjunction with coils in air handlers, chillers receive warm fluid from the air handler coil or process load, lower the temperature of the fluid, then a pump returns the fluid to the air handler coil or process.