In this paper, a desiccant coated heat exchanger (DCHE) system driven by solar energy is built and tested under winter condition. The purpose of this experimental research is to explore the
The dehumidification, regeneration, and cooling performance of the system between 8:30 and 17:30 are analyzed. The energy utilization of the solar collector and system is investigated. The results
Applied Thermal Engineering, 2008. This paper presents the numerical simulation results of an open cycle liquid desiccant dehumidification system, attempts to obtain the best configurations of the solar assisted airconditioning system and to validate the feasibility of using a liquid desiccant dehumidification system to handle the latent load and improve the energy efficiency of HVAC
Solar energy: Techajunta et al. 1999: Air dehumidification and air-conditioning in a tropical humid climate using solar energy- experimental investigation: Experimental: Silica gel: Single stage: Solar energy: Zhuo et al. 2006: Desiccant air conditioning using solar energy- experimental investigation and system design: Experimental
In this paper, a novel solar solid dehumidification/regeneration bed was proposed where three regeneration methods, i.e., simulated solar radiation, microwave irradiation, and
Solar energy can be used as a source for regeneration heat provided in reactivating desiccant dehumidifier used in alternate cooling systems. Solid desiccant dehumidification system coupled with vapor compression-based hybrid air-conditioning systems can successfully assisted by renewable solar thermal energy to dampen electricity use and to
Energies 2017, 10, 1369 4 of 17 3. Construction of the Testing Rig In order to investigate the dehumidification and regeneration performance of the SPDW, the SPDW was designed with a total flat
The solar-regenerated desiccant dehumidification rotating belt (SR-DDRB) utilizes directly the available solar radiation for regeneration, eliminating the need for external heating
This paper provides an extensive literature review on development of liquid desiccant regeneration using solar energy. The paper also includes the recent findings of hybrid solar system in which either two sources of heat is used for regeneration of liquid desiccant or solar energy is used for regeneration of liquid desiccant along with other
Downloadable (with restrictions)! Two different solar desiccant-dehumidification-regeneration systems have been studied. Both have the same glazed area and utilize similar mechanisms for dehumidification and regeneration. The solid desiccant used is silica gel and the particle sizes fall in the ranges of 6–8 and 2–4 mesh. The structures of the systems are simple and they are
Moreover, considering the advantage of low-grade thermal energy utilization, solar thermal energy can be used to further enhance the regeneration of DCHE to improve dehumidification performance and energy efficiency. In this paper, the solar-enhanced fresh air dehumidification system using DCHE driven by heat pump was proposed and a series of
Use of renewable solar energy can be a good source for regeneration heat provided in reactivating desiccant dehumidifier used in alternate cooling systems. Desiccant
The role of solar energy contribution for both electrical and thermal applications is projected. It is anticipated that electrical outcome will supply electrical energy to a small air-conditioning unit if required (900 Watts), mini refrigerator (90 Watts), computer and printer (230 Watts) and 5 Compact Fluorescent integral ballast lamps (total
Key Words: Dehumidification, Desiccant, Silica Gel Dehumidifier, Solar Energy, Regeneration. INTRODUCTION The rising demand of air conditioning involves huge consumption of fossil fuel in return causing climatic change & enhancing air-conditioning needs all over the world. 30% to 40% of overall electrical energy produced is consumed by
The only energy used is from ventilating fans and solar energy input for system regeneration. There is a large potential for dehumidification in Taiwan. Previous Solar desiccant-dehumidification-regeneration systems 753 space to implement low humidity storage of instrument and electronic device or dehydration of agricul- ture products.
This paper presents the development and simulation of an advanced solar assisted liquid desiccant dehumidification air-conditioning system for energy efficiency and
Use of renewable solar energy can be a good source for regeneration heat provided in reactivating desiccant dehumidifier used in alternate cooling systems. Desiccant dehumidification assisted vapor-compression based hybrid air-conditioning systems can successfully couple to renewable solar thermal power to dampen electricity use and to
Saito studied a solar desiccant system using direct solar energy as a heat source for the efficient regeneration of the adsorbent. He investigated the regeneration in an integrated desiccant/collector (IDC) by experiments and mathematical simulations. Throughout his study silica gel was used as the adsorbent.
Solar energy integrated with the desiccant dehumidifier can raise the temperature of desiccant more than 60°C and it saves around 35% of the energy during the peak summer season (Abdel-Salam, Ge
that the energy consumed to regenerate DW due to a high regeneration air temperature requirement to remove the adsorbed water. When solar energy is applied to heating the regeneration air of DW, DW dehumidification systems may have good performance in both energy saving and indoor environment controlling.
Solar energy can be used as a source for regeneration heat provided in reactivating desiccant dehumidifier used in alternate cooling systems. worth of solar energy as renewable regeneration
To investigate the dehumidification and regeneration performance of the SPDW, the transient moisture removal, dehumidification efficiency, temperature difference between the building inlet and outlet air, heat transfer characteristics,
On the one hand, solar energy as a regeneration heat source has good energy-saving and regenerative effects, making the construction of solar combined heat sources a promising avenue for application and development. Wasif et al. combined flat-plate solar air collectors with dehumidifiers to create a hybrid solar dehumidification system
Independent temperature-and-humidity-controlled air conditioning systems are being more and more widely used in buildings. The complete air-conditioning cycle of the systems consists of the adsorption process, regeneration process and cooling process, while the regeneration process is the core of the entire cycle.
The solar-assisted regeneration of dehumidification used for air-conditioning was done to observe and analyze the visibility of solar energy to regenerate diluted desiccant and
A packed column air-liquid contactor has been studied in application to air dehumidification and regeneration in solar air conditioning with liquid desiccants. Experimental study of the heat and mass transfer in a packed bed liquid desiccant air dehumidifier. J. Solar Energy Eng. Trans. ASME 120, 289–297. ¨ Oberg V. and Goswami D. Y
The solar-assisted regeneration of dehumidification used for air-conditioning was done to observe and analyze the visibility of solar energy to regenerate diluted desiccant and to work continuously for comfort in the house. The experiment was done in the month of May after running the experiment for two hours from 12:00 a.m. to 2:00 p.m. and
The solar-regenerated desiccant dehumidification rotating belt (SR-DDRB) utilizes directly the available solar radiation for regeneration, eliminating the need for external heating sources. Although the system ensures a decrease in process air humidity, single-stage SR-DDRB might have limited dehumidification capacity especially in high humid conditions and low solar
This can recovered the useful heat of process air section of dehumidifier to regeneration air section of dehumidifier by increasing overall cycle efficiency. improvement of desiccant air conditioner coupled with humidification-dehumidification desalination unit using solar reheating of regeneration air. Energy Convers Manag. 2019;198:111–808.
Applied Thermal Engineering, 2008. This paper presents the numerical simulation results of an open cycle liquid desiccant dehumidification system, attempts to obtain the best configurations of the solar assisted airconditioning system and to validate the feasibility of using a liquid desiccant dehumidification system to handle the latent load and improve the energy efficiency of HVAC
Contributed by the Solar Energy Division of THE AMERICAN SOCIETY OF MECHANICAL ENGINEERS for publication in the ASME JOURNAL OF SOLAR ENERGY ENGINEERING. Manuscript received by the ASME Solar Energy Division May 2003; final revision, December 2003. Two-Stage Liquid Desiccant Dehumidification∕Regeneration.
This study investigates the dehumidification and energy performance of central ventilation systems based on a liquid desiccant-assisted dedicated outdoor air system applied to an apartment
Earlier work has been conducted on liquid desiccant systems for cooling and dehumidification, using solar energy for regeneration. In several cases, direct regeneration of the solution in the sun has been considered, using a special type of collector. The useful dehumidification energy is the product of the change in humidity ratio of the
Thermodynamic and chemical properties of desiccant material has been analysed with focus on regeneration of desiccant using solar energy. Key Words: Dehumidification, Desiccant, Silica
In this paper, a solar-powered dehumidification window (SPDW), combining a conventional double-glazed building window with a solid desiccant packed bed and a photovoltaic panel, has been proposed to dehumidify the air supplied to
A solar-driven hollow fiber membrane dehumidification experimental rig was designed to investigate its performance from July to September in Guilin, China. The dehumidification, regeneration, and cooling performance of the system between 8:30 and 17:30 are analyzed. The energy utilization of the solar collector and system is investigated.
Solid desiccant dehumidification system coupled with vapor compression-based hybrid air-conditioning systems can successfully assisted by renewable solar thermal energy to
Substantial energy savings can be achieved by use of renewable solar heat for regenerating the desiccant wheel used in the hybrid cooling system. Thermodynamic performance of the solar powered desiccant based comfort cooling system was evaluated by Koronaki et al. .
Kabeel experimentally evaluated the performance of a hybrid desiccant air-conditioning system integrated with a rotary honeycomb wheel that utilized renewable solar energy for the reactivation, at various conditions of inlet air and different radiation intensity of solar heat.
Dehumidifying the process air was done using liquid desiccant solution of calcium chloride (CaCl 2) concentration 40% by mass. After the dehumidifying process air, solar energy is used to reactivate diluted and continuously operate the system cyclically.
The ameliorated performance of the solar powered solid desiccant based hybrid cooling system indicates its superiority relative to other heat-driven devices for solar based air conditioning systems, , , , , .
The authors have concluded that dehumidification of process air and regeneration of liquid desiccant reduces as room temperature increases and increases with increase in room specific humidity. Fig. 33. Block diagram of hybrid solar system .
In the solar powered desiccant based hybrid air-conditioning system, the latent load is handled effectively by the rotary desiccant dehumidifier while the sensible load is mainly taken by the sensible cooling coil of evaporator in conventional vapor compression system. So, the electricity consumption of the VCR evaporators can be greatly reduced.
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