4.7 Article

Impacts of the internal heat recovery scheme on the performance of an adsorption heat transformer cycle for temperature upgrade

Related references

Note: Only part of the references are listed.
Article Thermodynamics

Adsorption heat transformer cycle using multiple adsorbent plus water pairs for waste heat upgrade

Sagar Saren et al.

Summary: Adsorption heat transformers (AHTs) are promising systems for upgrading waste heat. This study analyzed the performance of the AHT cycle for waste heat upgrade and thermal desalination. Different adsorbents were investigated and their performance parameters were determined. The study found significant variations in adsorbent characteristics and highlighted the importance of material selection and system design optimization in the theoretical development of the AHT cycle.

JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY (2023)

Article Thermodynamics

Compact heat exchanger designs for difluoromethane-activated carbon composites based adsorption cooling systems

Sai Yagnamurthy et al.

Summary: This study evaluates the cooling potential of novel activated carbon-based pairs with R32 refrigerant for adsorption cooling systems. The composition with the highest volumetric cooling energy and thermal conductivity is considered for performance evaluation. Numerical analysis of two finned tube heat exchanger design configurations shows that the longitudinal fin configuration has a higher coefficient of performance with minimal decrement in cooling power. The results indicate the significance of heat exchanger optimization and offer better cooling capacities and compact designs compared to other HFC-based studies.

INTERNATIONAL COMMUNICATIONS IN HEAT AND MASS TRANSFER (2023)

Article Thermodynamics

Evaluating the emerging adsorbents for performance improvement of adsorption desalination cum cooling system

Hafiz M. Asfahan et al.

Summary: This study investigates the emerging adsorbents for adsorption desalination cum cooling system (ADCS) based on water production potential (WPP), specific cooling potential (SCP), energy required (ER), and coefficient of performance (COP). Among the studied adsorbents, A++, RD, Syloid 72FP + 57 wt% Emim-Ac, bipy-CTF500, and PS-II show relatively good performance. Syloid 72FP + 57 wt% Emim-Ac exhibits 5.6 times higher performance compared to A++ and could be a potential adsorbent for ADCS. The COP of all the studied adsorbents ranges from 0.74 to 0.93.

INTERNATIONAL COMMUNICATIONS IN HEAT AND MASS TRANSFER (2023)

Article Energy & Fuels

A novel hybrid adsorption heat transformer - multi-effect distillation (AHT-MED) system for improved performance and waste heat upgrade

Sagar Saren et al.

Summary: The novel AHT-MED system introduced in this paper combines adsorption heat transformer with multi-effect distillation system to achieve higher performance ratio and water production rate compared to traditional MED systems. By utilizing the chemical potential, the system supplies the heat generated from adsorption with a higher temperature to the first effect of the MED system, extending the temperature difference between the top and bottom brine temperatures.

APPLIED ENERGY (2022)

Article Thermodynamics

Silica gel-MIL 100(Fe) composite adsorbents for ultra-low heat-driven atmospheric water harvester

Hisham Maher et al.

Summary: This study focuses on the synthesis and characterization of composites comprising RD silica gel and metal-organic framework MIL-100(Fe) to improve the performance of adsorption-based atmospheric water harvesting system. The impact of adding MIL-100(Fe) on the properties of the composites was experimentally investigated, and three performance indicators were introduced to evaluate the system's performance.

ENERGY (2022)

Review Thermodynamics

Review on adsorption materials and system configurations of the adsorption desalination applications

W. S. Hua et al.

Summary: Adsorption desalination is an emerging desalination technology with low energy consumption and environmental benefits. However, research on this method is still limited and in the early experimental stages. Key areas of focus for future research include adsorbent preparation, system configuration optimization, cyclic operating conditions, and combination systems.

APPLIED THERMAL ENGINEERING (2022)

Article Thermodynamics

Comparative study on the water uptake kinetics and dehumidification performance of silica gel and aluminophosphate zeolites coatings

Lin Liu et al.

Summary: Desiccant coated heat exchanger (DCHE) systems have significant potential in improving dehumidification performance. The study investigated the kinetics of silica gel and two aluminophosphate zeolites in an adsorber designed to simulate a DCHE air channel, showing that FAM Z05 had higher dehumidification performance at lower temperatures.

ENERGY (2022)

Review Thermodynamics

Adsorption-based atmospheric water harvesting: A review of adsorbents and systems

Muhammad Bilal et al.

Summary: This study reviews the recent developments and future possibilities of adsorption-based atmospheric water harvesting (AWH) technologies. Liquid desiccants and metal-organic frameworks (MOFs) show potential as effective adsorbents for AWH, providing water in various humidity and temperature conditions. System design and optimization of adsorbent performance are crucial for these technologies.

INTERNATIONAL COMMUNICATIONS IN HEAT AND MASS TRANSFER (2022)

Article Thermodynamics

Scaling analysis of large pressure jump driven adsorption of water vapour in columnar porous silica gel bed

Sagar Saren et al.

Summary: This study conducted a theoretical analysis and computational fluid dynamics (CFD) study to investigate LPJ-driven adsorption process. Important physical scales for each phase were derived and validated through order of magnitude arguments. The results suggest that using short cycle time to maintain near isothermal condition in practical PSA systems is justified.

INTERNATIONAL COMMUNICATIONS IN HEAT AND MASS TRANSFER (2022)

Article Thermodynamics

Experimental investigation for water adsorption characteristics on functionalized MIL-125 (Ti) MOFs: Enhanced water transfer and kinetics for heat transformation systems

Bo Han et al.

Summary: Metal organic frameworks (MOFs) are promising materials for achieving cooling, heating, and water desalination with zero or negligible carbon footprint. This article investigates the water adsorption and desorption characteristics of different functional group-assisted MOFs in the adsorption heat transformation (A-HT) process, and evaluates their performance in terms of cooling, heating, and desalination capacities.

INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER (2022)

Article Engineering, Chemical

Highly efficient adsorption desalination employing protonated-amino-functionalized MOFs

Bo Han et al.

Summary: This article discusses the synthesis and characterization of protonated-amino-functionalized MOFs (MIL-101(Cr), MIL-125(Ti), and UiO-66(Zr)), and evaluates their performance in terms of water adsorption capacity, heat exchanger performance, and water production. The results show that protonated MOFs exhibit improved water distribution and production compared to non-protonated MOFs.

DESALINATION (2022)

Article Engineering, Chemical

Harvesting water from air using adsorption material - Prototype and experimental results

Ahmad K. Sleiti et al.

Summary: In regions with limited drinking water resources like the Middle East, a device has been developed to harvest clean drinking water from air using adsorption materials. Experimental studies have shown that the device can produce a significant amount of water under specific conditions, and increasing the relative humidity can improve water capture rates and overall efficiency. Further improvements can be made by incorporating multiple layers of sorbent and using sorbents with enhanced adsorption and desorption properties.

SEPARATION AND PURIFICATION TECHNOLOGY (2021)

Article Energy & Fuels

Upgrading Waste Heat from 90 to 110 °C: The Potential of Adsorption Heat Transformation

Mirko Engelpracht et al.

Summary: Low-grade heat below 100 degrees C is abundant, but industry mainly requires heat above 100 degrees C. This study focuses on utilizing low-grade heat through adsorption heat transformers (AdHTs) and optimizing performance through design and control. Waste heat temperature significantly affects the performance indicators of AdHTs.

ENERGY TECHNOLOGY (2021)

Article Energy & Fuels

Energy performance analysis and optimization of a coupled adsorption and absorption cascade refrigeration system

W. D. Chen et al.

Summary: This study investigates a novel energy cascade utilization system, which improves performance through experimental analysis and optimization, proposing a method for further enhancing efficiency.

APPLIED ENERGY (2021)

Article Thermodynamics

Advanced heat and mass recovery design in a two bed adsorption desalination system

Amirhossein Amirfakhraei et al.

Summary: This article presents an advanced mass and heat recovery design for the ADS system, which leads to an improvement in system performance ratio and water production compared to similar advanced systems.

APPLIED THERMAL ENGINEERING (2021)

Article Chemistry, Physical

Simulation and analysis of dual-reflux pressure swing adsorption using silica gel for blue coal gas initial separation

Zhongbo Guan et al.

Summary: A dual-reflux pressure swing adsorption (DR-PSA) process was proposed for initial separation of blue coal gas to capture CO2 and enrich H-2. By adjusting operating parameters and optimizing the process, CO2 was effectively captured and H-2 was enriched.

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY (2021)

Article Thermodynamics

Study on optimized adsorption chiller employing various heat and mass recovery schemes

Mahbubul Muttakin et al.

Summary: In this study, a commercial two-bed adsorption chiller using silica gel and water as adsorbent and adsorbate is simulated and validated through MATLAB platform. The performance of the chiller under various working conditions and the impacts of different parameters on the cooling capacity and COP are analyzed. Optimum operating parameters are reported for different temperatures to achieve maximum efficiency.

INTERNATIONAL JOURNAL OF REFRIGERATION (2021)

Review Thermodynamics

A review of recent advances in adsorption desalination technologies

Nadia Riaz et al.

Summary: Adsorption-based desalination technology can effectively handle high salinity feed water to produce low salinity water at a reasonable cost. Hybrid systems with known conventional cycles show improved water production and good cooling performance, making advancements in the field of desalination.

INTERNATIONAL COMMUNICATIONS IN HEAT AND MASS TRANSFER (2021)

Article Thermodynamics

Thermodynamic analysis and impact of thermal masses on adsorption cycles using MaxsorbIII/R245fa and SAC-2/R245fa pairs

S. Seo et al.

Summary: Adsorption cycles using different adsorbent-adsorbate pairs were studied for adsorption cooling and heat transformer applications. The study evaluated the specific cooling energy, coefficient of performance, and the impact of thermal mass ratios on the performance of the cycles. Results showed that the thermal mass had a significant impact on the cycles, with some pairs offering better performance at higher regeneration temperatures.

INTERNATIONAL JOURNAL OF REFRIGERATION (2021)

Article Thermodynamics

Recent progress on water vapor adsorption equilibrium by metal-organic frameworks for heat transformation applications

Sahrish Ashraf et al.

Summary: Adsorption-based heat transformation systems have been studied since the twentieth century, with recent advancements in Metal-Organic Frameworks (MOFs) showing significant improvements in performance over conventional adsorbents. Specifically, MOFs like MIL-101(Cr) and MIL-53(Al) demonstrate superior adsorption capacities and stability for heat transformation and water desalination applications, making them promising candidates for various adsorption applications.

INTERNATIONAL COMMUNICATIONS IN HEAT AND MASS TRANSFER (2021)

Article Chemistry, Multidisciplinary

Thermodynamic Performance of Adsorption Working Pairs for Low-Temperature Waste Heat Upgrading in Industrial Applications

Andrea Frazzica et al.

Summary: This study aimed to analyze the thermodynamics of different working pairs in adsorption heat transformers for low-temperature waste heat upgrade. The results showed the key role of internal heat recovery and temperature gradient in improving the overall performance of the system.

APPLIED SCIENCES-BASEL (2021)

Article Thermodynamics

A new adsorptive cycle HeCol for upgrading the ambient heat: The current state of the art

Yu Aristov

INTERNATIONAL JOURNAL OF REFRIGERATION-REVUE INTERNATIONALE DU FROID (2019)

Article Chemistry, Multidisciplinary

The removal and capture of CO2 from biogas by vacuum pressure swing process using silica gel

Yuanhui Shen et al.

JOURNAL OF CO2 UTILIZATION (2018)

Article Thermodynamics

Adsorptive transformation of ambient heat: A new cycle

Yuri I. Aristov

APPLIED THERMAL ENGINEERING (2017)

Article Thermodynamics

Experimental investigation and analysis of composite silica-gel coated fin-tube heat exchangers

Y. Jiang et al.

INTERNATIONAL JOURNAL OF REFRIGERATION-REVUE INTERNATIONALE DU FROID (2015)

Article Thermodynamics

Performance analysis of a low-temperature waste heat-driven adsorption desalination prototype

Kyaw Thu et al.

INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER (2013)

Article Thermodynamics

Study on an advanced adsorption desalination cycle with evaporator-condenser heat recovery circuit

Kyaw Thu et al.

INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER (2011)

Article Thermodynamics

Operational strategy of adsorption desalination systems

Kyaw Thu et al.

INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER (2009)

Article Thermodynamics

A comparative evaluation of two different heat-recovery schemes as applied to a two-bed adsorption chiller

Xiaolin Wang et al.

INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER (2007)

Article Thermodynamics

Experimental study on performance improvement of a four-bed adsorption chiller by using heat, and mass recovery

Kim Choon Ng et al.

INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER (2006)

Article Thermodynamics

Experimental investigation of silica gel-water adsorption chillers with and without a passive heat recovery scheme

XL Wang et al.

INTERNATIONAL JOURNAL OF REFRIGERATION-REVUE INTERNATIONALE DU FROID (2005)

Article Thermodynamics

Mass recovery four-bed adsorption refrigeration cycle with energy cascading

A Akahira et al.

APPLIED THERMAL ENGINEERING (2005)

Article Thermodynamics

Mass recovery adsorption refrigeration cycle-improving cooling capacity

A Akahira et al.

INTERNATIONAL JOURNAL OF REFRIGERATION-REVUE INTERNATIONALE DU FROID (2004)

Article Thermodynamics

Performance improvement of adsorption cooling by heat and mass recovery operation

RZ Wang

INTERNATIONAL JOURNAL OF REFRIGERATION-REVUE INTERNATIONALE DU FROID (2001)