Refrigerants and CFCs a Major Cause of Ozone Layer Depletion
Halogenated hydrocarbons have been extensively used as refrigerants. The refrigerants that contain chlorine as one of the atoms in their compounds …
Continue ReadingShowing items from HVAC: Heating, Ventilation & Air-Conditioning
What Makes a Refrigerator Cold? Learn About the Most Common Refrigerant, Halogenated Hydrocarbons, or CFC
In the very earlier days carbon-dioxide and ammonia were used as refrigerants. With the increasing applications of refrigeration and air conditioning, …
Continue ReadingAir Conditioner Parts and Refrigerator Parts: Evaporator
The refrigerant undergoes various changes throughout the vapor compression cycle and it is in the evaporator where it actually produces the cooling …
Continue ReadingBody Comfort & The Factors That Affect It:: Temperature, Humidity and Velocity
The human body is like a machine that consumes fuel and produces power and heat. When the body consumes food, which contains lots of calories, it gets …
Continue ReadingCentral Air-Conditioning Plants: Direct Expansion and Chilled Water
Central air conditioning plants are used for applications like big hotels, large buildings having multiple floors, hospitals, etc, where very high …
Continue ReadingChlorofluorocarbons Refrigerants, CFC Refrigerants: Ozone Layer Depletion & Greenhouse Effect
Chlorofluorocarbons (CFCs) have been found to cause the depletion of the ozone layer. The ozone layer prevents ultraviolet radiations of the sun from …
Continue ReadingFactors that Affect HVAC Design: Heat Load Calculations
Heat is generated inside the room from various sources. Some of these include heat gained by the walls, heat entering from the windows, heat generated …
Continue ReadingHeat Load Calculations Software: AutoCAD HVAC Design Software
A number of software programs have come on the market that make complex HVAC design and heat load calculations very simple. Here one such product …
Continue ReadingHow Air Conditioning Works to Maintain Comfort Condtions and Control Temperature, Humidity and Air Flow Rate
Air conditioning is the process of maintaining comfortable conditions inside a closed space. It controls temperature, humidity, air flow rate and the …
Continue ReadingHow Does A Refrigerator Work: Components of Refrigeration Cycle
There are four important parts of a refrigerator: compressor, condenser, expansion valve and evaporator. Freon gas passes through all these parts …
Continue ReadingHVAC Design - Factors Affecting Body Comfort Conditions Such As Climate, Activity & Air Velocity
The human body feels comfortable at certain values of temperature, relative humidity and velocity of air inside a room. These are called comfort …
Continue ReadingPackaged Air Conditioner: Capacity Control System
This article describes the arrangement of compressors in the package air conditioners with multiple compressors. It also describes the capacity …
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