Project report for Water cooler is as follows.

A machine that cools and dispenses water is known as a water cooler or water dispenser. There are many different form factors for water coolers, including wall-mounted, bottle-filler water cooler combo units, bi-level units, and other forms. Point-of-use (POU) water coolers and packaged water coolers are the two main divisions. 

While bottled water coolers require the delivery (or self-pick-up) of water in large bottles from vendors, POU water coolers are connected to a water supply. Depending on the model, bottled water coolers can be top-mounted or bottom-loaded. Coolers for bottled water often include 5- or 10-gallon dispensers of water, which are typically located on top of the appliance. 

Water coolers are divided into pressure coolers, which also include water fountains and direct-piping water dispensers. A crude apparatus for cooling water is also referred to as a “water cooler.” A typical metonym for sociability at work is “at the water cooler.

There is a metal sheet cabinet for the water cooler. Compressor, condenser, capillary tube, accumulator, water cooling coil, thermostat, relay, overload protection, and others are all hermetically sealed. To regulate the temperature of the water, a thermostat is available. Water is fed to the storage tank using separate inlet and outlet connectors. To reduce the loss of chilled water, a float valve is used to maintain the water level.

When the vapour compression system begins to run, the refrigerant flow through the evaporator coil absorbs the heat of the water and causes it to evaporate. This refrigerant is transported to the condenser after being squeezed to high pressure and temperature by the compressor. 

The heat content of the refrigerant is rejected to the atmosphere in an air-cooled condenser. a condenser fan that is positioned in front of the condenser coils to create an artificial air current. The rate of cooling and refrigerant increases as a result, and the quick condensation of vapour refrigerant into liquid refrigerant. 

The cycle is repeated numerous times until the desired cooling of the water is achieved. The liquid refrigerant travels from the condenser outlet through a capillary tube to the evaporator coil. When the water in the storage tank reaches the desired temperature, the compressor is shut off by a thermostat.