The virtues of air refrigeration, including cheapness, availability and safety of the refrigerant used made it quite appealing to the early inventors of refrigeration machines. Air refrigeration dates back to the middle of nineteenth century, but it was not until 1877 that a reliable unit was developed. It was used mostly for cold-storage of meat on ships. However, the equipment [...]
Top 5 Methods of Refrigeration (Natural and Artificial Methods of Refrigeration)! 1. Natural Methods: (a) By Using Ice or Snow: The natural methods include the utilization of ice or snow produced naturally in cold climate. Ice melts at 0°C, so when it is placed in a space or system warmer than 0°C heat flows into ice and the space is [...]
In this article we will discuss about simple vapour compression refrigeration system. Introduction to Vapour Compression System: For a closed cycle of refrigeration employing the condensable refrigerant vapour, the following processes are required: (i) Compression of the vapour, thereby increasing pressure. (ii) Condensing these vapours and rejecting heating to the cooling medium (usually water or atmospheric air). (iii) Expanding the [...]
There are four refrigeration systems: 1. Vapour Compression Refrigeration System 2. Vapour Absorption Refrigeration System 3. Thermoelectric Refrigeration System 4. Compound or Multi-Stage Vapour Compression Refrigeration System. 1. Vapour Compression Refrigeration System: This is the most important system from the standpoint of commercial and domestic utility and most practical form of refrigeration. The working fluid, known as a refrigerant, used [...]
In this article we will discuss about the electrical circuit of a refrigerator with its diagram. The applications of refrigeration for domestic purposes are mainly in the form of domestic refrigerators and home freezers. The main purpose of this type of refrigeration is to provide low temperature for storage and distribution of foods and drinks. It represents a significant portion [...]