Results 221 to 230 of about 379 (257)
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Simplified Models for the Evaluation of Desiccant Wheels Performance
2016At present interest in building HVAC (Heating, Ventilating and Air Conditioning) systems based on a desiccant wheel is increasing, due to the possibility of realizing high-energy-efficiency systems and of integrating renewable energy sources. The design of air handling units based on this technology is quite complex because of the difficulties in ...
De Antonellis, Stefano +1 more
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Experimental Investigation of a Desiccant Wheel Cycle
Volume 7: Fluids and Heat Transfer, Parts A, B, C, and D, 2012In hot and humid regions, removal of moisture from the air represents a considerable portion of the air conditioning load. Conventionally, air conditioning systems have to lower the air temperature below its dew point to accomplish dehumidification.
Ali Al-Alili +2 more
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Performance Comparison of Enthalpy Recovery Devices Using Liquid Desiccant and Desiccant Wheel
Journal of Thermal Science and Engineering Applications, 2020Abstract Heat recovery between outdoor air and indoor exhaust air is an effective approach for energy-saving in the air-conditioning system. Performances of enthalpy recovery devices using liquid desiccant (LD) and desiccant wheel (DW) are compared in the present study.
Ying Xie, Xiaohua Liu, Tao Zhang
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Performance Enhancement of Rotary Desiccant Wheel by Innovative Designs of Multiple Desiccant Layers
2016Rotary Desiccant wheel in the desiccant air conditioning system is used for the dehumidification of process air by adsorption of water vapour by the desiccant (porous media) layer. And while the hot air which is heated up by the heater (or waste heat recovered from other equipments) flows through regeneration side, water is desorbed out from the ...
Selvaraji Muthu +2 more
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Performances of the Hybrid Active Desiccant Wheel System with Type III Desiccant
Applied Mechanics and Materials, 2010A new type of hybrid desiccant air conditioning system combining an active desiccant wheel with a conventional front-positioned cooling coil is presented, in which Type Ⅲ desiccant is used in the active desiccant wheel. Then a preliminary experiment is carried out in order to investigate the feasibility of the hybrid desiccant system serving as a ...
Yuan Zhi Zuo, Sheng Li Wen, Xi Ya Li
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Energy and Buildings, 2010
A desiccant cooling model is developed and applied to the ventilation, recirculation, makeup, and mix modes of the operating system. The mathematical model is based on the transient coupled heat and mass transfer and is used to predict the performance of the system under various design and operational conditions.
Ghassem Heidarinejad, Hadi Pasdarshahri
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A desiccant cooling model is developed and applied to the ventilation, recirculation, makeup, and mix modes of the operating system. The mathematical model is based on the transient coupled heat and mass transfer and is used to predict the performance of the system under various design and operational conditions.
Ghassem Heidarinejad, Hadi Pasdarshahri
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Analysis of Entropy Generation Mechanisms in a Desiccant Wheel
This work presents a novel detailed analysis of entropy generation mechanisms in a desiccant wheel (DW) by the the direct method, enabling differentiation of entropy sources by type and location. A detailed model of the desiccant-based system, implemented in Modelica, is used to compute entropy generation from various phenomena.Segura Schreiber, Jan +2 more
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Applied Thermal Engineering, 2013
Modeling can be strong asset to the operation of air conditioning plants taking into account e.g. the strong dependency of local climate conditions for the operation of HVAC systems. This paper presents a validated physical model and a simplified model based on the results of the physical model for a desiccant wheel, which is the central part of a ...
Wrobel, Jan +2 more
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Modeling can be strong asset to the operation of air conditioning plants taking into account e.g. the strong dependency of local climate conditions for the operation of HVAC systems. This paper presents a validated physical model and a simplified model based on the results of the physical model for a desiccant wheel, which is the central part of a ...
Wrobel, Jan +2 more
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Experimental Investigation of Composite Desiccant Wheel Dehumidifier
Applied Mechanics and Materials, 2015Desiccant wheel dehumidifier is filled with solid desiccants, looks like a honeycomb structure which is open on both ends. Air is allowed to pass through the honeycomb passages, giving moisture to the solid desiccant contained in the wheel. The wheel constantly rotates through two separate air streams.
P.D. Dipinlal +3 more
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Modeling and Analysis of Desiccant Wheel
2016Desiccant cooling systems have advantages in environmentally friendly operation and separate control of sensible and latent cooling loads, which leads to comfortable indoor air quality. In addition, the desiccant cooling system is a heat-driven cycle and therefore has the ability to use low-grade energy.
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