## What is pH diagram thermodynamics?

A p-h diagram is a figure with a vertical axis of absolute pressure and a horizontal axis of specific enthalpy. It is an important diagram used frequently for a performance calculation of a refrigerating machine. A p-h diagram is made respectively for a specified refrigerant.

What is an enthalpy diagram?

An enthalpy diagram plots information about a chemical reaction such as the starting energy level, how much energy needs to be added to activate the reaction, and the ending energy. An enthalpy diagram is graphed with the enthalpy on the y-axis and the time, or reaction progress, on the x-axis.

What does the pH indicate?

pH is a measure of how acidic/basic water is. The range goes from 0 – 14, with 7 being neutral. pHs of less than 7 indicate acidity, whereas a pH of greater than 7 indicates a base. pHs less than 7 are acidic while pHs greater than 7 are alkaline (basic).

### What are the four 4 stages of vapor-compression refrigeration cycle?

Why Do We Use The Term “Compression”? The Vapor Compression Refrigeration Cycle involves four components: compressor, condenser, expansion valve/throttle valve and evaporator. It is a compression process, whose aim is to raise the refrigerant pressure, as it flows from an evaporator.

What is the working principle of vapour compression cycle?

Working principle of Vapour Compression Cycle It works as follows: During suction stroke of the compressor, wet vapor refrigerant is drawn from the evaporator and compressed adiabatically to high pressure and high temperature The high-pressure vapour refrigeration is then cooled in the condenser at constant pressure

What is a simple vapour compression system of refrigeration?

A simple vapour compression system of refrigeration consists of the equipment as follows: The schematic diagram of the arrangement is shown in Fig. 36.20. The low temperature, low pressure vapour at state B is compressed by the compressor.

## What are the basic components of low ammonia charge system?

Low ammonia charge systems e. LVS system-patented JBT 21 STANDARD COMPONENTS OF REGULAR SYSTEM 1. Compressor-Reciprocating or screw –open type 2. Condensers-Atmospheric, shell and tube, evaporative or PHE- mostly water cooled in India 3.

What are the different types of ammonia refrigeration systems?

Various Ammonia Refrigeration systems 1.Vapour Compression systems a. Single stage systems for operation between +400C/-200C to -150C b.