The Experts below are selected from a list of 9087 Experts worldwide ranked by ideXlab platform
Kun Yang - One of the best experts on this subject based on the ideXlab platform.
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effect of applying ultrasonic on the regeneration of silica gel under different Air conditions
International Journal of Thermal Sciences, 2012Co-Authors: Kun YangAbstract:Abstract To decrease the regeneration temperature of silica gel (an excellent desiccant), the non-heating regeneration method with ultrasonic has been proposed and studied in our previous papers in which the effect of acoustic parameters as well as Drying Air temperature on the regeneration process was investigated experimentally by desiccant-weighing method. In this paper, the effect of Drying Air temperature and humidity on the ultrasonic-assisted regeneration and the following adsorption features of silica gel will be further studied by measuring the states of Drying Air. Different inlet Air conditions, i.e., 40, 50, 60 and 70 °C in temperature combined with 0.01, 0.015 and 0.02 Kg/(Kg Dry Air) in humidity, are designed for the experimental study. The mass of Dry silica gel sample used in this study is measured as 175 ± 0.1 g, and the acoustic frequency and power of ultrasound are 23 kHz and 60 W, respectively. The two indexes, AERR (Average Enhancement Ratio of Regeneration) and AERA (Average Enhancement Ratio of Adsorption), are used to estimate the effect of ultrasonic on the regeneration and the following adsorption of silica gel. The experimental results show that the effect of ultrasound on the regeneration will first rise and then decline when the Drying Air temperature rises from 40 °C to 70 °C, while it decreases with the Drying Air humidity increasing from 0.01 to 0.02 Kg/(Kg Dry Air). Similar regular patterns can be found for the effect of regeneration assisted by ultrasonic on the adsorption of silica gel. Meanwhile, a theoretical model is developed to predict the regeneration rate of silica gel assisted by ultrasound and validated by experiments.
Shinsuke Kato - One of the best experts on this subject based on the ideXlab platform.
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field study on humidification performance of a desiccant Air conditioning system combined with a heat pump
Energies, 2016Co-Authors: Koichi Kawamoto, Hitoshi Kohno, Makoto Koganei, Ryozo Ooka, Shinsuke KatoAbstract:A desiccant Air-conditioning system was developed as a latent-load-processing Air conditioner in a dedicated outdoor Air system during the summer. This study investigated the application of this Air-conditioning system to humidification during the winter without using make-up water, thereby eliminating the cause of microbial contamination in Air-conditioning systems. The experiments were conducted with a system used for summer applications to determine the feasibility of adsorbing vapor from outdoor Air and supplying it to an indoor space. The humidification performance, energy efficiency, and operating conditions were examined. Although the conditions were subpar because the experiments were performed with an actual dedicated outdoor Air system, the results showed that it is possible to supply Air with a minimum humidity ratio of 5.8 g/Kg Dry Air (DA) when the humidity ratio of outdoor Air ranges from 1.8 to 2.3 g/Kg DA. The minimum humidification performance required for a dedicated outdoor Air system was achieved by increasing the Airflow rate of the moisture-adsorption side to 2–3 times that of the humidification side. In addition, Air leaking from the moisture-adsorption side to the humidification side, improving the mechanical structure, such as by the insulation of the moisture-adsorption side, and an efficient operating method were examined for humidification during the winter.
Hongguang Jin - One of the best experts on this subject based on the ideXlab platform.
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hybrid liquid desiccant Air conditioning system combined with marine aerosol removal driven by low temperature heat source
Applied Energy, 2020Co-Authors: Yuze Dai, Feng Liu, Jun Sui, Dandan Wang, Wei Han, Hongguang JinAbstract:Abstract The hot and humid Air containing marine aerosols on tropical islands or coastal areas always leads to serious equipment corrosion and affects the living comfort of residents. Conventionally, an Air-conditioning system can only provide cool Dry Air, and the marine aerosol removal process consumes expendable materials. To simplify the procedure and reduce the energy consumption, a novel hybrid Air-conditioning system combined with marine aerosol removal is proposed in this paper. The novel system achieves multiple functions based on the characteristics of liquid-desiccant dehumidification and phase transitions of the ternary solution system, and it can be driven by a low-temperature heat source. Simulation and thermodynamic analysis of the combined system are presented, and the results show that the humidity ratio of the supply Air can reach 6.83 g/Kg (Dry Air), with a temperature of 21.14 °C. Compared with the conventional cooling dehumidification system utilizing vapor compression refrigeration driven by power, the power saving ratio (PSR) and the equivalent power generation efficiency (ηeq) of the proposed system can reach 93.11% and 9.8%, respectively. Further, exergy analyses are carried out, and the results show the Air handling process of the novel system has a considerable energy saving potential. Besides, a crystallization experiment is conducted to verify the feasibility of the key NaCl separation process. Finally, economic analyses are carried out, which indicate that the novel system achieves competitive economic performance. This study provides a new hybrid Air-conditioning technology for simultaneous cooling, dehumidification and marine aerosol removal by using low-temperature heat.
Koichi Kawamoto - One of the best experts on this subject based on the ideXlab platform.
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field study on humidification performance of a desiccant Air conditioning system combined with a heat pump
Energies, 2016Co-Authors: Koichi Kawamoto, Hitoshi Kohno, Makoto Koganei, Ryozo Ooka, Shinsuke KatoAbstract:A desiccant Air-conditioning system was developed as a latent-load-processing Air conditioner in a dedicated outdoor Air system during the summer. This study investigated the application of this Air-conditioning system to humidification during the winter without using make-up water, thereby eliminating the cause of microbial contamination in Air-conditioning systems. The experiments were conducted with a system used for summer applications to determine the feasibility of adsorbing vapor from outdoor Air and supplying it to an indoor space. The humidification performance, energy efficiency, and operating conditions were examined. Although the conditions were subpar because the experiments were performed with an actual dedicated outdoor Air system, the results showed that it is possible to supply Air with a minimum humidity ratio of 5.8 g/Kg Dry Air (DA) when the humidity ratio of outdoor Air ranges from 1.8 to 2.3 g/Kg DA. The minimum humidification performance required for a dedicated outdoor Air system was achieved by increasing the Airflow rate of the moisture-adsorption side to 2–3 times that of the humidification side. In addition, Air leaking from the moisture-adsorption side to the humidification side, improving the mechanical structure, such as by the insulation of the moisture-adsorption side, and an efficient operating method were examined for humidification during the winter.
Ryozo Ooka - One of the best experts on this subject based on the ideXlab platform.
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field study on humidification performance of a desiccant Air conditioning system combined with a heat pump
Energies, 2016Co-Authors: Koichi Kawamoto, Hitoshi Kohno, Makoto Koganei, Ryozo Ooka, Shinsuke KatoAbstract:A desiccant Air-conditioning system was developed as a latent-load-processing Air conditioner in a dedicated outdoor Air system during the summer. This study investigated the application of this Air-conditioning system to humidification during the winter without using make-up water, thereby eliminating the cause of microbial contamination in Air-conditioning systems. The experiments were conducted with a system used for summer applications to determine the feasibility of adsorbing vapor from outdoor Air and supplying it to an indoor space. The humidification performance, energy efficiency, and operating conditions were examined. Although the conditions were subpar because the experiments were performed with an actual dedicated outdoor Air system, the results showed that it is possible to supply Air with a minimum humidity ratio of 5.8 g/Kg Dry Air (DA) when the humidity ratio of outdoor Air ranges from 1.8 to 2.3 g/Kg DA. The minimum humidification performance required for a dedicated outdoor Air system was achieved by increasing the Airflow rate of the moisture-adsorption side to 2–3 times that of the humidification side. In addition, Air leaking from the moisture-adsorption side to the humidification side, improving the mechanical structure, such as by the insulation of the moisture-adsorption side, and an efficient operating method were examined for humidification during the winter.
