What Is a Refrigeration Plant?

Refrigeration equipment refers to equipment mainly used for refrigerating the crew's food, refrigerating various cargoes, and cabin air conditioning in the summer. It is mainly composed of compressor, expansion valve, evaporator, condenser and accessories, and piping. According to the working principle, it can be divided into compression refrigeration equipment, absorption refrigeration equipment, steam jet refrigeration equipment, heat pump refrigeration equipment and electric heating refrigeration equipment. Compression refrigeration equipment is currently the most commonly used on ships. The heat of the object and its surroundings is removed through the working cycle of the equipment, causing a certain low temperature state. The refrigerants currently used are mainly Freon and ammonia, especially Freon. However, due to Freon's damaging effect on the atmospheric ozone layer, it has begun to be restricted by environmental protection regulations. Ammonia and other new refrigerants are being re-used and trial-produced. ^[1]

Refrigeration equipment

Refrigeration equipment refers to equipment mainly used for refrigerating the crew's food, refrigerating various cargoes, and cabin air conditioning in the summer. It is mainly composed of compressor, expansion valve, evaporator, condenser and accessories, and piping. According to the working principle, it can be divided into compression refrigeration equipment, absorption refrigeration equipment, steam jet refrigeration equipment, heat pump refrigeration equipment and electric heating refrigeration equipment. Compression refrigeration equipment is currently the most commonly used on ships. The heat of the object and its surroundings is removed through the working cycle of the equipment, causing a certain low temperature state. The refrigerants currently used are mainly Freon and ammonia, especially Freon. However, due to Freon's damaging effect on the atmospheric ozone layer, it has begun to be restricted by environmental protection regulations. Ammonia and other new refrigerants are being re-used and trial-produced. ^[1]

Refrigeration equipment is

Before the development of artificial refrigeration, humans already knew that using natural ice and snow to maintain low temperature conditions in simple equipment, that is, using natural

There are two types of cooling methods for refrigeration equipment: direct cooling and indirect cooling. Direct cooling

It condenses the high-pressure and high-temperature refrigerant vapor sent from the compressor into a liquid. There are three types of commonly used condensers: water-cooled. Water as coolant, tube condenser, sleeve type

A refrigerating machine is a machine that transfers the heat of a cooled object with a lower temperature to the ambient medium to obtain the cooling capacity. The amount of heat transferred from lower temperature objects is conventionally referred to as cold capacity. The working medium in a refrigerator that participates in changes in the thermal process (energy conversion and heat transfer) is called a refrigerant. The temperature range of refrigeration is usually above 120K, and below 120K belongs to the deep low temperature technology range.

The invention of air conditioners

British inventor known as Father of Refrigeration

1. Cool down

in

In the 1960s and 1970s, rare dry weather occurred in the United States. In order to solve the problem of air-conditioning cold and heat sources in dry and dry regions, the United States took the lead in developing an air-cooled chiller that uses air to replace cooling towers. The name is: Air cool Chiller, referred to as Chiller!

Refrigeration equipment

In the history of air conditioning, the United States has developed and improved a central unit system with ducts, and has received strong support from distributors and dealers of air conditioning equipment that are installing and repairing ducted unit air conditioners on site. WRAC is the simplest and cheapest system that can be easily purchased in retail stores and installed on its own when high temperatures continue to come. At the same time, ductless SRAC and SPAC have been developed and improved in Japan since the 1970s, under a different force from the US market. Later, equipment design and manufacturing technology was transferred to China in the 1990s, which was formed by working with local companies (including local manufacturers of major components such as compressors, heat exchangers, electric actuators, fine valves and electronic controllers). Joint venture. In the 1990s, China also absorbed the advanced high-tech of larger air-conditioning equipment from other advanced countries, and formed joint ventures with most of the major US companies. Today, China is a top country, with major local factories and joint ventures manufacturing a large number of SRACs and SPACs to meet growing domestic markets and export needs. Japan has been exporting SRAC and SPAC units to China, Europe and the Middle East in the past few years to establish new markets. However, China is now the largest exporter of air conditioners. In 2001, the total number of WRAC, SRAC and SPAC units exported reached 5 million units. In 2002, 7.5 or 8 million units are expected to be exported. Japan is losing its export status.