Air Handling Unit Installation

 

AHU Installation

parameter for pump purchase

The terms could be helpful if you know when you are going to buy a +pump. +Head It is one of the main parameter you need to know. It is expressed in terms of meter or sometimes in bar. The bar to meter can be converted by multiplying 10.
Flow or discharge: It is a measure of volume capacity of a pump. It can be expressed as GPM -+Gallon per Minute, or l/min etc.
+Pump performance curve: The diagram which explain the relationship between the head, power, efficiency, and discharge. The manufacturer will +Supply the curve. +Pipe friction loss: The friction loss is the major loss of a flowing fluid. +Pressure The force exerted on the walls of a pipe by the liquid. It is measured in PSI, barg, kgf/cm2. +Efficiency Total power output to the total power input, it is expressed as a percentage.

Steam Injector- Flash Cooling system

Photo: Steam Injector- Using in Flash Cooling system of making Condensed Milk.
TIG (Tungsten Inert  Gas) welding in the leakage area.
Courtesy: Danish Condensed Milk (BD) Ltd, Bangladesh.

Difference Between A/C and Refrigerator

In a refrigerating system we produce cooling where as in every air-conditioning system we will need the use of this refrigeration system to cool the air.it is,therefore,stated that air-conditioning system is only a sub-system of refrigeration system.
Conditioning air by controlling humidity, purity, flow, temperature in a closed air or semi closed area is air conditioning. And extracting heat from an area and rejecting it to sink or surrounding for keeping desired area at a low temperature than surrounding is refrigeration.
both have same type of compressor ,but the only difference is cooling capacity is different .for refrigerator it is not necessary to cool immediately while for A/C it requires fast cooling power.