Review
Energy & Fuels
Kalpana, Sudhakar Subudhi
Summary: The vapor compression air conditioning (VCAC) is the most widely used method for space cooling, but it has disadvantages such as consuming more electricity and contributing to global warming. The liquid desiccant system using an evaporative cooler is a cost-effective and environmentally sustainable alternative. By integrating liquid desiccant dehumidifiers with evaporative coolers, energy consumption can be reduced, especially in hot and humid areas.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2022)
Review
Green & Sustainable Science & Technology
Kashish Kumar, Alok Singh, Prem Kumar Chaurasiya, Kamal Kishore Pathak, Vikas Pandey
Summary: The air-conditioning sector has witnessed significant growth in liquid desiccant air-conditioning (LDAC) system technologies in recent decades. The LDAC system is considered a viable substitute to vapour compression system (VCS) due to its exceptional temperature and humidity control and energy-saving ability. This study provides an overview of the developments associated with incorporating liquid desiccant technologies into VCS units. Various configurations of dehumidifiers and hybrid technologies have been analyzed, and materials for liquid desiccant and dehumidifiers have been discussed. Studies have shown that by combining liquid desiccant systems with VCS units, both a comfortable cooling level and energy savings of 40-80% can be achieved. This review article identifies research gaps and explores prospective future research techniques to further enhance the performance of hybrid liquid desiccant-vapour compression systems.
SUSTAINABLE ENERGY TECHNOLOGIES AND ASSESSMENTS
(2023)
Article
Construction & Building Technology
Mohammad Salikandi, Benyamin Ranjbar, Elahe Shirkhan, S. Shanmuga Priya, I. Thirunavukkarasu, K. Sudhakar
Summary: This paper examines the application of liquid desiccants in air conditioning systems, covering materials, properties, operating conditions, desiccant dehumidifiers, and performance enhancements. Additionally, it discusses the impact of liquid desiccant systems on indoor air quality and different regeneration methods, providing guidance for designing and operating building air conditioning systems based on liquid desiccants.
JOURNAL OF BUILDING ENGINEERING
(2021)
Article
Thermodynamics
P. Pasqualin, P. A. Davies
Summary: This study proposes a novel multi-stage nanofiltration system as a regeneration method for liquid desiccant air conditioning in order to achieve greenhouse cooling and irrigation in a closed water cycle. The study shows that the multi-stage NF regenerator can recover a significant amount of water and achieve high COP, improving greatly on conventional LDAC systems. It has the potential to cool greenhouses in hot climates where crop production is challenging during summer.
APPLIED THERMAL ENGINEERING
(2022)
Review
Green & Sustainable Science & Technology
D. L. Shukla, K. V. Modi
Summary: This article introduces the working principle of liquid desiccant-operated evaporative cooling systems (LDECS) and the differences with conventional vapor compression refrigeration systems (VCRS). It discusses various components, features, and advancements of LDECS, as well as the influence of different input parameters on performance indices and overall performance. Finally, key conclusions and future research directions are summarized concisely.
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2022)
Article
Green & Sustainable Science & Technology
Mustafa Jaradat, Aiman Albatayneh, Adel Juaidi, Ramez Abdallah, Osama Ayadi, Jwan Ibbini, Pietro Elia Campana
Summary: The performance of liquid desiccant systems on the supply air conditions for closed poultry barns was numerically analyzed in this study. The results show that conventional direct evaporative cooling systems are not feasible when the ambient air is near saturation. The liquid desiccant systems consistently reduce the humidity ratio and air dry-bulb temperature.
SUSTAINABLE ENERGY TECHNOLOGIES AND ASSESSMENTS
(2022)
Article
Thermodynamics
Hyo-Lim Park, Soo-Jin Lee, Jae-Hee Lee, Jae-Weon Jeong
Summary: A cooling system utilizing liquid desiccant to lower humidity and improve cooling tower performance is proposed. Simulations conducted in hot and humid climates show an average reduction of 35.12% in cooling energy consumption can be achieved.
CASE STUDIES IN THERMAL ENGINEERING
(2023)
Review
Green & Sustainable Science & Technology
D. C. Gao, Y. J. Sun, Z. Ma, H. Ren
Summary: This study provides a systematic review on the latest developments in DAC system integration and design, focusing on improvements in overall performance. It covers typical DAC system configurations, integration approaches, configuration improvements, and design and control optimizations. Discussions and recommendations based on the latest DAC system developments aim to address pressing issues and outstanding problems for further performance enhancements.
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2021)
Article
Thermodynamics
Kamal Kumar Ghosh, Chandrakant R. Sonawane, Anand Pandey, Hitesh Panchal, A. S. El-Shafay, Ahmed Mohamed Mahmoud Ibrahim, Mohammad S. Alsoufi, Ammar Elsheikh
Summary: Heat driven sorption technologies are promising alternatives to traditional vapour compression systems for comfort cooling, with liquid desiccant-based cooling systems being preferred for high latent heat load applications. Experimental investigation of an indirect contact type liquid desiccant cooling system showed that optimizing the inlet air and desiccant solution parameters is crucial for achieving the highest possible latent heat effectiveness in the cooling system.
CASE STUDIES IN THERMAL ENGINEERING
(2022)
Article
Thermodynamics
Andrew N. Aziz, Saad Mahmoud, Raya Al-Dadah, Mohamed A. Ismail, Mohammed K. Al Mesfer
Summary: This paper investigates the performance of four MOF materials in a stationary desiccant heat exchanger, showing that Aluminium fumarate has the highest COP and moisture removal rate. Experimental and modelling results indicate that the rate of moisture removal is influenced by the air inlet humidity and incoming air speed, and the highest moisture removal occurs within the first 2 minutes of the dehumidification process.
APPLIED THERMAL ENGINEERING
(2022)
Article
Thermodynamics
Jinwei Chang, Zhi Li, Yan Huang, Xiaonan Yu, Ruicheng Jiang, Rui Huang, Xiaoli Yu
Summary: This study proposes a novel combined cooling, dehumidification and power system based on an internal combustion engine. The system utilizes waste heat to drive absorption chillers, liquid desiccant dehumidification units, battery, and Organic Rankine Cycle units. The aim is to optimize the operation strategy and meet the multi-energy demands of users. The study includes a case study, parametric study, multi-objective optimization, and sensitivity analysis. The results show significant reductions in carbon dioxide emissions and total costs compared to traditional energy supply systems.
Article
Thermodynamics
Yanling Zhang, Hao Zhang, Hongxing Yang, Yi Chen, Chun Wah Leung
Summary: Using auxiliary internal cooling is an effective way to improve the dehumidification effectiveness of the liquid desiccant dehumidifier compared with the adiabatic dehumidifier. Indirect evaporative cooling is a promising solution for internal cooling due to its high efficiency and environmentally friendly features. Through a numerical model, the thermal performance of the dehumidifier was analyzed, and various influential parameters were identified.
APPLIED THERMAL ENGINEERING
(2022)
Article
Thermodynamics
Lauren Boston, Peter Huang, Paul R. Chiarot
Summary: Two-phase cooling using electrospray atomization is an efficient method for heat removal from electronic systems. This study focuses on the effects of spray angles on electrospray cooling. The results show that spray angles larger than 30 degrees achieve an evaporation efficiency exceeding 100% at the critical heat flux, while a spray angle of 25 degrees results in 90% efficiency.
APPLIED THERMAL ENGINEERING
(2022)
Article
Construction & Building Technology
Niyati Moulinkumar Shah, Jignesh R. Mehta, Suruchi Sharma
Summary: The study presents a novel bubble column liquid desiccant air dehumidifier with internal cooling, which can remove moisture more efficiently and with lower power consumption compared to traditional methods. The experiment results show that at 40% concentration of liquid desiccant, the dehumidifier's effectiveness can be increased from 67% for adiabatic dehumidifier to 95% using internally cooled dehumidifier. Higher concentration is more important for adiabatic dehumidifier, while lower liquid desiccant temperature in internally cooled dehumidifier retains higher potential for moisture removal.
ENERGY AND BUILDINGS
(2023)
Article
Construction & Building Technology
Mohamad El Loubani, Nesreen Ghaddar, Kamel Ghali, Mariam Itani
Summary: This study proposed a novel hybrid cooling system for office spaces in hot and humid climates by combining multiple sustainable cooling, thermal storage, and dehumidification solutions. The system achieved acceptable thermal comfort levels and significant energy cost savings compared to conventional air conditioning units.
JOURNAL OF BUILDING ENGINEERING
(2021)
Article
Physics, Fluids & Plasmas
A. J. Hijano, I. G. Loscertales, S. E. Ibanez, F. J. Higuera
Review
Engineering, Chemical
Joan Rosell-Llompart, Jordi Grifoll, Ignacio G. Loscertales
JOURNAL OF AEROSOL SCIENCE
(2018)
Article
Chemistry, Physical
Ramiro Ruiz-Rosas, Juana M. Rosas, Ignacio G. Loscertales, Jose Rodriguez-Mirasol, Tomas Cordero
APPLIED CATALYSIS B-ENVIRONMENTAL
(2014)
Article
Chemistry, Multidisciplinary
J. M. Cuevas, B. Gonzalo, C. Rodriguez, A. Dominguez, D. Galan, I. G. Loscertales
JOURNAL OF EXPERIMENTAL NANOSCIENCE
(2015)
Article
Mechanics
J. Guerrero, A. J. Hijano, M. A. Lobato, F. J. Higuera, I. G. Loscertales, A. Fernandez-Nieves
Article
Mechanics
A. J. Hijano, I. G. Loscertales, F. J. Higuera
Summary: The emission of droplets from an electrified meniscus in the microdripping regime has been investigated through experiments and numerical simulations. This technique can produce monodisperse droplets at relatively high frequencies. Discrepancies between calculated and experimental results may be caused by the ultrafine electrospray emitted from the ligament's conical tip during part of the oscillation cycle.
JOURNAL OF FLUID MECHANICS
(2021)
Article
Gastroenterology & Hepatology
Francisco Javier Perez Lara, Rogelio Zubizarreta Jimenez, Francisco Javier Moya Donoso, Jose Manuel Hernandez Gonzalez, Tatiana Prieto-Puga Arjona, Ricardo Marin Moya, Maria Pitarch Martinez
Summary: The study demonstrated that the double diabolo suture required greater force to reach the breaking point in various tension scenarios. Comparing it with simple interrupted and continuous sutures, the double diabolo design showed superior performance in terms of resistance to tension.
WORLD JOURNAL OF GASTROINTESTINAL SURGERY
(2021)
Article
Gastroenterology & Hepatology
Francisco Javier Perez Lara, Rogelio Zubizarreta Jimenez, Francisco Javier Moya Donoso, Jose Manuel Hernandez Gonzalez, Tatiana Prieto-Puga Arjona, Arturo Del Rey Moreno, Maria Pitarch Martinez
Summary: The study aims to preoperatively detect patients with giant hiatal hernias who are not suitable for laparoscopic surgery, and therefore candidates for thoracoscopic approach. Using imaging tests, the study simulates the field of vision and working area during laparoscopic surgery, providing data to calculate access angles and determine the suitability for different surgical approaches.
WORLD JOURNAL OF GASTROINTESTINAL SURGERY
(2021)
Article
Construction & Building Technology
Samiran Khorat, Debashish Das, Rupali Khatun, Sk Mohammad Aziz, Prashant Anand, Ansar Khan, Mattheos Santamouris, Dev Niyogi
Summary: Cool roofs can effectively mitigate heatwave-induced excess heat and enhance thermal comfort in urban areas. Implementing cool roofs can significantly improve urban meteorology and thermal comfort, reducing energy flux and heat stress.
ENERGY AND BUILDINGS
(2024)
Article
Construction & Building Technology
Qi Li, Jiayu Chen, Xiaowei Luo
Summary: This study focuses on the vertical wind conditions as a main external factor that limits the energy assessment of high-rise buildings in urban areas. Traditional tools for energy assessment of buildings use a universal vertical wind profile estimation, without taking into account the unique wind speed in each direction induced by the various shapes and configurations of buildings in cities. To address this limitation, the study developed an omnidirectional urban vertical wind speed estimation method using direction-dependent building morphologies and machine learning algorithms.
ENERGY AND BUILDINGS
(2024)
Article
Construction & Building Technology
Xiaojun Luo, Lamine Mahdjoubi
Summary: This paper presents an integrated blockchain and machine learning-based energy management framework for multiple forms of energy allocation and transmission among multiple domestic buildings. Machine learning is used to predict energy generation and consumption patterns, and the proposed framework establishes optimal and automated energy allocation through peer-to-peer energy transactions. The approach contributes to the reduction of greenhouse gas emissions and enhances environmental sustainability.
ENERGY AND BUILDINGS
(2024)
Article
Construction & Building Technology
Ying Yu, Yuanwei Xiao, Jinshuai Chou, Xingyu Wang, Liu Yang
Summary: This study proposes a dual-layer optimization design method to maximize the energy sharing potential, enhance collaborative benefits, and reduce the storage capacity of building clusters. Case studies show that the proposed design significantly improves the performance of building clusters, reduces energy storage capacity, and shortens the payback period.
ENERGY AND BUILDINGS
(2024)
Article
Construction & Building Technology
Felix Langner, Weimin Wang, Moritz Frahm, Veit Hagenmeyer
Summary: This paper compares two main approaches to consider uncertainties in model predictive control (MPC) for buildings: robust and stochastic MPC. The results show that compared to a deterministic MPC, the robust MPC increases the electricity cost while providing complete temperature constraint satisfaction, while the stochastic MPC slightly increases the electricity cost but fulfills the thermal comfort requirements.
ENERGY AND BUILDINGS
(2024)
Article
Construction & Building Technology
Somil Yadav, Caroline Hachem-Vermette
Summary: This study proposes a mathematical model to evaluate the performance of a Double Skin Facade (DSF) system and its impact on indoor conditions. The model considers various design parameters and analyzes their effects on the system's electrical output and room temperature.
ENERGY AND BUILDINGS
(2024)
Article
Construction & Building Technology
Ruijun Chen, Holly Samuelson, Yukai Zou, Xianghan Zheng, Yifan Cao
Summary: This research introduces an innovative resilient design framework that optimizes building performance by considering a holistic life cycle perspective and accounting for climate projection uncertainties. The study finds that future climate scenarios significantly impact building life cycle performance, with wall U-value, windows U-value, and wall density being major factors. By using ensemble learning and optimization algorithms, predictions for carbon emissions, cost, and indoor discomfort hours can be made, and the best resilient design scheme can be selected. Applying this framework leads to significant improvements in building life cycle performance.
ENERGY AND BUILDINGS
(2024)