Table of Contents

Vapour Absorption Refrigeration system | Working ,Diagram

介绍

Vapour Absorption Refrigeration Systems (VARS) belong to the class of vapour cycles similar to vapour compression refrigeration systems. However, unlike vapour compression refrigeration systems, the required input to absorption systems is in the form of heat. Hence these systems are also called as heat operated or thermal energy driven systems. Since conventional absorption systems use liquids for
absorption of refrigerant, these are also sometimes called as wet absorption systems. Similar to vapour compression refrigeration systems, vapour absorption refrigeration systems have also been commercialized and are widely used in various refrigeration and air conditioning applications. Since these systems run on low-grade thermal energy, they are preferred when low-grade energy such as waste heat or solar energy is available. Since conventional absorption systems use natural refrigerants such as water or ammonia they are environment friendly.

阅读更多：蒸汽压缩制冷系统|基本，工作，系统的部分

建造：

蒸汽吸收系统由冷凝器，膨胀阀和蒸发器组成。
They perform the same as they do in vapour compression method.
In addition to these, this system has an absorber, a heat exchanger, an analyser and a rectifier.

在职的：

1.低压下的干氨蒸气从蒸发器进入吸收器。
2. In the absorber the dry ammonia vapour is dissolved in cold water and strong solution of ammonia is formed.
3.通过将冷水循环通过保持在吸收器中的线圈，除去在氨的吸收期间进化的热量。
4. The highly concentrated ammonia (known as Aqua Ammonia) is then pumped by a pump to generator through a heat exchanger.
在热交换器中，通过从发电机返回到吸收器的热弱溶液加热强氨溶液。
在发电机中，通过蒸汽线圈，气体或电力进一步加热温溶液，氨蒸气从溶液中驱除。
氨的沸点小于水的沸点。
8. Hence the vapours leaving the generator are mainly of ammonia.
9. The weak ammonia solution is left in the generator is called weak aqua.
10. This weak solution is returned to the absorber through the heat exchanger.
11. Ammonia vapours leaving the generator may contain some water vapour.
12. If this water vapour is allowed to the condenser and expansion valve, it may freeze resulting in chocked flow.
13. Analyser and rectifiers are incorporated in the system before condenser.
14. The ammonia vapour from the generator passes through a series of trays in the analyser and ammonia is separated from water vapour.
15. The separated water vapour returned to generator.
然后，氨蒸气通过整流器。
17. The rectifier resembles a condenser and water vapour still present in ammonia vapour condenses and the condensate is returned to analyser.
18. The virtually pure ammonia vapour then passes through the condenser.
19.氨蒸汽的潜热被拒绝通过冷凝器循环的冷却水，并且氨蒸气冷凝成液氨。
20. The high pressure liquid ammonia is throttled by an expansion valve or throttle valve.
21. This reduces the high temperature of the liquid ammonia to a low value and liquid ammonia partly evaporates.
22. Then this is led to the evaporator.
23. In the evaporator the liquid fully vaporizes.
24.蒸发的潜热从正在冷却的盐水或其他体获得。
25. The low pressure ammonia vapour leaving the evaporator again enters the absorber and the cycle is completed.
26.再次重复该循环以提供制冷效果。