Journal Article10.1080/01457632.2017.1295743
Dehumidification and Thermal Behavior of Desiccant Wheels: Correlations Based on Experimental and Manufacturer Data
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TL;DR: In this article, experimental data are used to develop correlations to predict the dehumidification and thermal performance of a DW, as a function of inlet air temperature and humidity ratio, regeneration temperature, air flow rates, and rotational speed.
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Abstract: Desiccant cooling systems (DCS) represent a suitable alternative to conventional systems for air-conditioning purposes. Their benefits should be correctly assessed by means of dynamic simulations, taking into account both the operating context and the available control variables. Several models are available in literature to model solid DCS based on desiccant wheels (DW). Nevertheless, physical models are rather complex to be implemented in dynamic simulation tools of building-integrated energy systems, while constant effectiveness models have low performance. Regression models can represent a suitable alternative, as they can provide high accuracy but with a low modeling effort. In this paper, experimental data are used to develop correlations to predict the dehumidification and thermal performance of a DW, as a function of inlet air temperature and humidity ratio, regeneration temperature, air flow rates, and rotational speed. Statistical tools are used to investigate the effect of those indepen...
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Citations
New multiple regression and machine learning models of rotary desiccant wheel for unbalanced flow conditions
TL;DR: In this article , the effect of different kernel functions of SVM algorithms on the modeling of desiccant wheel was investigated for the first time in the open literature, and the developed models showed that the Response Surface model outperformed other Multiple Linear Regression models, and SVM with Pearson VII Universal kernel was the best among all models.
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Seasonal analysis of a desiccant air-conditioning system supported by water-cooled PV/T units
TL;DR: In this article , the authors proposed and simulated a solid desiccant air-conditioning system integrated with a direct evaporative cooler, a dew-point indirect evicant cooler and heat recovery units during a complete cooling season for a building located in Adana, Turkey.
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Modelling of desiccant wheels using radial basis neural networks
TL;DR: In this paper, the radial basis neural network is applied to forecast the performance of a desiccant wheel data, where the input parameters are the inlet process air humidity, temperature, regeneration temperature, number of rotations per hour of the wheel and ratio of the volume flow rates of the process air and the regeneration air.
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A Study on Booster Pump System with Flow Sensor for Individual Flow Control Method
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TL;DR: In this paper , a turbine-type flow sensor was developed through computational fluid dynamics and experimentation to detect individual pump flow rates and a control algorithm to manage each low and high flow rate pump's revolutions per minute.
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High-efficiency solution for an open-loop desiccant assisted solar cooling system by integrating trans-critical CO2 heat pumps: A comprehensive techno-economic assessment
Gianluigi Lo Basso,Ali Mojtahed,Lorenzo Mario Pastore,Livio de Santoli +3 more
TL;DR: High-efficiency solution for an open-loop desiccant assisted solar cooling system integrating trans-critical CO2 heat pumps achieves high renewable energy share and improved performance compared to existing systems.
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References
Experimental analysis on the dehumidification and thermal performance of a desiccant wheel
TL;DR: In this article, an experimental analysis on the performance of the desiccant wheel is presented, with particular attention to the variation of the performance as a function of the process and regeneration air flow rates.
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Modeling and simulation of desiccant wheel for air conditioning
TL;DR: In this paper, the simulation of the combined heat and mass transfer processes that occur in a solid desiccant wheel is carried out with MATLAB Simulink, where the performance of an adiabatic rotary dehumidifier is parametrically studied, and the optimal rotational speed is determined by examining the outlet adsorption-side humidity profiles.
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Effect of rotational speed on the performances of a desiccant wheel
TL;DR: In this article, the rotational speed of the desiccant wheel is considered as a crucial parameter: if the wheel rotates too fast, the dehumidification material does not have enough time to remove the moisture and saturation could occur.
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Desiccant wheel regenerated by thermal energy from a microcogenerator: Experimental assessment of the performances
TL;DR: In this paper, an experimental analysis is presented on the performances of a silica-gel desiccant wheel, inserted in a test facility characterized by an advanced Desiccant air handling unit, coupled to an electric chiller, a natural gas-fired boiler and a small scale cogenerator.
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Simplified models for the performance evaluation of desiccant wheel dehumidification
TL;DR: In this article, simple models have been presented to evaluate the performance of rotary desiccant wheels based on different kind of solid desiccants e.g. silica gel and LiCl.
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