Mindblown: a blog about philosophy.
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SIMPLE VAPOUR COMPRESSION REFRIGERATION SYSTEM
The schematic diagram of a simple vapour compression refrigeration system is shown in Fig. 19.1. It consists of the following parts: Figure 19.1 Schematic diagram of simple vapour compression refrigeration system
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COMPARISON OF VAPOUR COMPRESSION SYSTEM WITH AIR REFRIGERATION SYSTEM
Following are the advantages and disadvantages of the vapour compression refrigeration system over air refrigeration system: Advantages Disadvantages
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INTRODUCTION
The vapour compression refrigeration system is based upon the fact that fluids absorb heat while changing from a liquid phase to vapour phase and reject heat while changing from a vapour phase to a liquid phase. The temperature during the phase change remains constant. However, the temperature varies with the pressure and the fluid. In…
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REFRIGERANT SELECTION
The choice of a refrigerant depends upon the following factors:
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ECO-FRIENDLY REFRIGERANTS
With the increasing awareness of environmental degradation, the production, use and disposal of Chloro Fluoro Carbons (CFCs) and Hydro Chloro Fluoro Carbons (HCFCs) as refrigerants in mechanical refrigeration systems has become a subject of great concern. However, such systems are being developed using more eco-friendly refrigerants, such as Eco-friendly refrigerants are also known as natural…
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APPLICATIONS OF REFRIGERANTS
The refrigerants and their applications are given in Table 18.1. The primary-refrigerants are further classified into the following four groups Table 18.1 Refrigerants and their applications Table 18.2 Commonly used halo carbon refrigerants Table 18.3 Azeotrope refrigerantss Table 18.4 Inorganic refrigerants Table 18.5 Hydrocarbon refrigerants Table 18.6 Ozone Depletion Potential (ODP) of Refrigerants
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DESIRABLE PROPERTIES OF REFRIGERANTS
A good refrigerant should have the following properties:
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DESIGNATION OF REFRIGERANTS
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CLASSIFICATION OF REFRIGERANTS
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REFRIGERANTS
A refrigerant may be defined as a substance which absorbs heat through expansion or vaporization and loses it through condensation in a refrigeration system.
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