What is desiccant evaporative cooling system?
Desiccant evaporative cooling basically absorb the latent heat in the air i.e. reduces the humidity of the air. In cooling systems a solid desiccant or a liquid desiccant solution can be used to assist in the cooling process. Desiccant has a property of regeneration so it can be recirculated and reused.
What is a desiccant cooling system?
Desiccant cooling systems are heat-driven cooling units and they can be used as an alternative to the conventional vapor compression and absorption cooling systems. The operation of a desiccant cooling system is based on the use of a rotary dehumidifier (desiccant wheel) in which air is dehumidified.
What is DeVAP and why is it so important for the future?
DeVAP is a visionary technology that has the potential to take the HVAC world by storm. Its simple yet revolutionary approach to cooling air enables companies and homeowners to keep their structures cool and dry for only a small percentage of what it would cost them if they used traditional air conditioning systems.
What is a desiccant HVAC system and why would you need one?
Desiccant cooling systems have been considered as an efficient method of controlling moisture content in supply air. They do not use any ozone-depleting coolants and consume less energy as compared with the vapour compression systems. This communication provides an extensive review of liquid desiccant systems (LDSs).
How does liquid desiccant work?
Liquid desiccant systems are a newer technology that uses liquid water-lithium chloride as a sorbent and cooling material. In the conditioning chamber, the concentrated liquid desiccant absorbs moisture from the incoming air and dehumidifies. The diluted lithium chloride flows to a heat exchanger.
How does a liquid desiccant air conditioner work?
The liquid desiccant is a concentrated salt solution that directly absorbs moisture without first cooling the air below its dew point. The sensible heat released as the desiccant absorbs the moisture is also removed from the air so the LDAC both cools and dries the air.
Is evaporative A cooling?
Cooling through evaporation is a natural occurrence. The most common example we all experience is perspiration, or sweat. As perspiration evaporates it absorbs heat to cool your body. The principle underlying evaporative cooling is the fact that water must have heat applied to it to change from a liquid to a vapor.
How does a liquid desiccant dehumidification system remove moisture from the air?
“Process” air goes through one section of a desiccant-coated wheel, which absorbs moisture and makes the air drier than when it first entered. As it rotates, the wheel exposes the desiccant to a “regenerating” air stream that dries and expels or desorbs, the moisture that is collected from the process air.
Which of the following is liquid desiccant?
Liquid desiccants for air conditioning applications include solutions of lithium chloride (LiCl), lithium bromide (LiBr), and calcium chloride (CaCl2). As pure salts, these have a vapour pressure of practically zero.
What is liquid desiccant air conditioning?
What is evaporative cooling?
Evaporative cooling is the conversion of liquid water into vapor using the thermal energy in the air, resulting in a lower air temperature.