Renewable heat powered polygeneration system based on an advanced absorption cycle for rural communities

Kumar, G. Praveen; Ayou, Dereje S.; Narendran, C.; Saravanan, R.; Maiya, M.P.; Coronas, Alberto

doi:10.1016/j.energy.2022.125300

Cited by 13 publications

(3 citation statements)

References 32 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The research paper [29] introduced a new advanced absorption cycle for multiple product production in rural communities. The system utilized renewable energy source heat and is an ammonia-water absorption cycle with parallel evaporators for cooling and power generation.…”

Section: Literature Reviewmentioning

confidence: 99%

Performance Evaluation of a Small Scale Ammonia-Water Absorption Cooling System for Off-Grid Rural Homes: A Numerical and Experimental Study

Younes,

Altork,

Shaban

2024

IJHT

View full text Add to dashboard Cite

In areas with unreliable electricity, the absorption system serves as a crucial, eco-friendly refrigeration technology. This study addresses the system's performance gaps, evaluating the 100 W NH3-H2O absorption cooling system under various conditions. The focus is on its suitability for electricity-challenged areas, employing theoretical and experimental methods. Two configurations are tested based on input heat sources, using bifacial Photovoltaic (PV) or solar parabolic troughs integrated with the absorption chiller. The Engineering Equation Solver (EES) program determines thermodynamic properties, with the model split into sections-one with the solution heat exchanger (SHX) excluding the liquid-vapor heat exchanger (LVHX) and the other incorporating both. The findings indicate a direct correlation between higher evaporator and generator temperatures and an increase in the Coefficient of Performance (COP). The theoretical and experimental cooling COP values reach 0.62 and 0.63, respectively, at 7℃ evaporator temperature and 85℃ generator temperature. Similarly, at 95℃ generator temperature, the COP values are 0.629 and 0.637 for the same evaporator temperature. The theoretical maximum COP at 3℃ evaporator temperature is 0.512 at 90°C generator temperature, with experimental COP approaching 0.52 at generator temperatures of 96℃, 98℃, and 100℃. The integration of an LVHX into the chiller module demonstrates a notable improvement in cycle performance, enhancing efficiency by approximately 7-7.5%. In conclusion, this study offers crucial insights into optimizing the NH3-H2O absorption cooling system for off-grid scenarios, contributing to a broader understanding of absorption refrigeration technology in diverse environmental conditions.

show abstract

Section: Literature Reviewmentioning

confidence: 99%

Performance Evaluation of a Small Scale Ammonia-Water Absorption Cooling System for Off-Grid Rural Homes: A Numerical and Experimental Study

Younes,

Altork,

Shaban

2024

IJHT

View full text Add to dashboard Cite

show abstract

“…Thermal generation can be very beneficial to an EC since it can ensure comfortable living conditions for the local community by providing heating, cooling and domestic hot water. An example of this was provided by Kumar et al, who proposed a poly-generation system that can provide cooling, power, heating and desalinated water for rural communities in India [52]. Common technologies for thermal generation are boilers [53], heat pumps [53], absorption chillers [54] and CHP plants [55,56].…”

Section: Energy Assets 331 Energy Generationmentioning

confidence: 99%

Key Aspects and Challenges in the Implementation of Energy Communities

et al. 2023

View full text Add to dashboard Cite

Energy communities (ECs) are an important tool towards a fair energy transition. Hence, the European Union (EU) has positioned ECs at the centre of its energy strategy and the foreseen transformation of its energy system. This paper aims to give an overview of key aspects and challenges for the implementation of the EC concept. Firstly, the regulatory framework is examined with a focus on the new definitions for ECs introduced by the EU, Renewable Energy Communities (RECs) and Citizen Energy Communities (CECs). Secondly, examples of established ECs and their main objectives are mentioned. Additionally, based on the identified challenges and requirements of establishing ECs, the key technologies that are implemented or have the potential to be deployed in an EC are examined, as well as innovative cross-cutting services that are optimally suited to be integrated in an EC. Moreover, the data management challenges linked to some of these technologies are considered. Finally, an overview of actual or potential financing schemes to support the EC development is given. Overall, the analysis highlighted the regulatory, technical and financial aspects and challenges that ECs are facing and the need to address them so that the EC concept is effective and successful. The main challenges identified for each of these aspects are the regulatory compliance with the legal framework, the data management dimension when innovative technological concepts are adopted and the financing of new projects.

show abstract

“…They calculated the hourly variation of NH 3 H 2 O solar absorption system performance. Kumar et al 17 studied the effects of generator temperature, condenser temperature, and refrigerant flow on cooling and power sub‐cycles.…”

Section: Introductionmentioning

confidence: 99%

Energy analysis of the absorption cooling cycle from the waste heat of the hospital sterilization unit

Şahin,

Elbir

2023

Env Prog and Sustain Energy

View full text Add to dashboard Cite

Autoclave devices are used to perform high‐temperature sterilization processes under pressure. Autoclaves can be integrated with an absorption refrigeration cycle to utilize the waste heat generated at high temperature during the process. Today, many studies are carried out on the evaluation of energy resources. In this study, it is designed to obtain a cooling load by adding an integrated sub‐cycle to the waste steam heat of the autoclave device in a sterilization unit. In the lower cycle, the ammonia/water absorption refrigeration cycle is used. According to the energy analysis; With the condition that the cooling temperature is 7°C, the generator temperature of 95°C and a cooling load of 130.9 W occurred with 531.7 W of waste heat received by the absorption cooling system. Accordingly, an efficiency of COP 0.246 was obtained. The energy analysis of the absorption refrigeration cycle can improve the energy efficiency of the autoclave and save energy. In addition, the obtained cooling load will be preserved in medical supplies that need to be kept cold.

show abstract

Renewable heat powered polygeneration system based on an advanced absorption cycle for rural communities

Cited by 13 publications

References 32 publications

Performance Evaluation of a Small Scale Ammonia-Water Absorption Cooling System for Off-Grid Rural Homes: A Numerical and Experimental Study

Performance Evaluation of a Small Scale Ammonia-Water Absorption Cooling System for Off-Grid Rural Homes: A Numerical and Experimental Study

Key Aspects and Challenges in the Implementation of Energy Communities

Energy analysis of the absorption cooling cycle from the waste heat of the hospital sterilization unit

Contact Info

Product

Resources

About