Volume 14, Issue 12

Separating Cooling and Dehumidification: A Path to Greater Efficiency

Author

Khaled e albuloushi, Salman dawood alhussaini

Abstract

Abstract:

Conventional vapor-compression air conditioning systems suffer from a fundamental inefficiency: the coupled processes of sensible cooling and latent dehumidification. To remove moisture, the evaporator coil must operate at an excessively low temperature, often necessitating subsequent reheating of the overcooled air to maintain comfort. This cycle of overcooling and reheating constitutes a significant source of energy waste. This paper critiques the limitations of this traditional approach and proposes a transformative alternative: the decoupling of dehumidification and sensible cooling. By employing dedicated systems, such as desiccant dehumidifiers for latent load and high-temperature cooling units for sensible load, this method eliminates the need for reheat and allows each system to operate at its peak efficiency. The decoupled system demonstrates the potential for energy savings of up to 35%, while also providing superior independent control over temperature and humidity, enhanced adaptability to part-load conditions, and improved indoor air quality. This approach represents a promising paradigm shift for enhancing energy efficiency in modern air conditioning.
 

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DOI

https://doi.org/10.62226/ijarst20252597

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