What is Psychrometrics HVAC?
The Psychrometric Chart is a key tool used by HVAC & Refrigeration engineers in many situations. It is used in calculating cooling loads and selecting mechanical equipment like enthalpy wheels, heat exchangers (air), air handlers and fan coils.
What is the importance of Psychrometrics while designing an HVAC system for a building?
Psychrometrics can be used to predict changes in the environment when the amount of heat and/or moisture in the air changes. Use of psychrometric analysis is also important to determine the volume flow rates of air to be pushed into the ducting system and the sizing of the major system components.
What is humidification in air conditioning?
Humidification occurs when the temperature of the water is higher that the dew point of the air. Steam Type is sometimes called vaporizer and it basically boil the water and discharge the steam into the room. It usually consists of a metal reservoir to contain the water, a heater element and a float.
What is the simultaneous control of temperature humidity air movement and quantity of air in space?
Air conditioning is the simultaneous control of temperature, humidity, air movement, and the quality of air in a conditioned space or building. Conditioning the air in a space helps to maintains a predetermined temperature-humidity relationship to meet comfort or technical requirements.
Which type of chart is used in air conditioning system?
Psychrometric chart is one of the chart that is commonly used in solving HVAC problems. The properties of air such as wet bulb temperature, dry bulb temperature, dew point temperature, relative humidity, humidity ratio, specific enthalphy and specific volume are shown on this chart.
What is saturated air?
When a volume of air at a given temperature holds the maximum amount of water vapour, the air is said to be saturated. Saturated air, for example, has a relative humidity of 100 percent, and near the Earth the relative humidity very rarely falls below 30 percent.
What is winter air conditioning system?
In the winter air conditioning system, the cooling coil is made inoperative and the heating coil operates to heat the air. The spray type humidifier is also used in the dry season to humidify the air.
What is the difference between comfort air conditioning and industrial air conditioning?
In comfort air conditioning, the air is brought to the required dry bulb temperature and relative humidity for the human health comfort and efficiency, while in industrial air conditioning the inside dry bulb temperature and relative humidity of the air is kept constant for proper working of the machine and for the …
What does raindrop mean on AC?
For air conditioners that have dehumidification systems, clients may see a water droplet icon on the thermostat screen. Usually, what this symbol means is that the air conditioner is running in dry mode to remove excess moisture from the air.
Should you run AC humidifier?
Despite the hot and sticky outdoors, air conditioners dry out the inside of your home. That’s why it’s good to concurrently run a humidifier.
What are the four important factors of conditioning the air?
Definition of Air Conditioning: The desirable conditions may be temperature, humidity, dust particle level, odor level, and air motion. It is known that the physical properties of air can be controlled by cooling, heating, humidification, and dehumidification.
What are the important factors of conditioning the air?
Factors That Affect Air Conditioning Efficiency
- SEER Rating. SEER stands for Seasonal Energy Efficiency Ratio.
- Temperature Set Point. The temperature set point programmed into your thermostat also has an effect on your air conditioning’s efficiency.
- Duct Conditions.