Cooling machine with integrated cold storage

Berlitz, T; Lemke, Nicholas; Satzger, P.; Ziegler, Felix

doi:10.1016/s0140-7007(97)00040-6

Cited by 9 publications

(3 citation statements)

References 1 publication

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“…The data reported by them showed that 1 kW of thermal power output was achieved. Berlitz et al [49] compared different thermal storage techniques, such as external driving heat storage with oil, internal heat storage with LiBr-H 2 O, and external cold storage with sensible water heat. The absorption chiller cooling capacity was 20 kW; the stored cold was 3.3 kWh with a COP of 1.2, and the required driving heat was 2.8 kWh.…”

Section: Liquid Absorption Materialsmentioning

confidence: 99%

Review of Technologies and Recent Advances in Low-Temperature Sorption Thermal Storage Systems

et al. 2021

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Sorption thermochemical storage systems can store thermal energy for the long-term with minimum amount of losses. Their flexibility in working with sustainable energy sources further increases their importance vis-à-vis high levels of pollution from carbon-based energy forms. These storage systems can be utilized for cooling and heating purposes or shifting the peak load. This review provides a basic understanding of the technologies and critical factors involved in the performance of thermal energy storage (TES) systems. It is divided into four sections, namely materials for different sorption storage systems, recent advances in the absorption cycle, system configuration, and some prototypes and systems developed for sorption heat storage systems. Energy storage materials play a vital role in the system design, owing to their thermal and chemical properties. Materials for sorption storage systems are discussed in detail, with a new class of absorption materials, namely ionic liquids. It can be a potential candidate for thermal energy storage due to its substantial thermophysical properties which have not been utilized much. Recent developments in the absorption cycle and integration of the same within the storage systems are summarized. In addition, open and closed systems are discussed in the context of recent reactor designs and their critical issues. Finally, the last section summarizes some prototypes developed for sorption heat storage systems.

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Section: Liquid Absorption Materialsmentioning

confidence: 99%

Review of Technologies and Recent Advances in Low-Temperature Sorption Thermal Storage Systems

et al. 2021

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“…Meanwhile, with insufficient sunshine, the PCM discharges, and the released cooling is supplied to the users. The thermal storage for solar air conditioning systems can be defined by either storing the driving heat collected by solar collectors or storing the cooling produced by chillers …”

Section: Overview Of Integrating Pcms Into Air Conditioning Systemsmentioning

confidence: 99%

Improving the performance of air conditioning systems by using phase change materials: A review

Omara

Abuelnour

2019

Int J Energy Res

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Summary This paper reviews the application of phase change materials (PCMs) for improving the performance of air conditioning systems. The different methods of integrating PCMs into air conditioning systems are presented. Moreover, the effects of PCM geometry, flow, and heat transfer characteristics on the performance of air conditioning systems and the potential use of PCMs in increasing the energy savings and coefficient of performance of air conditioning systems are also discussed. Recent studies on the thermodynamic (energy and exergy), economic, and environmental benefits of integrating PCMs into air conditioning systems are reviewed. Several methods for the preparation and optimal selection of PCMs are proposed to improve the performance of air conditioning systems, and then the challenges relating to PCM properties, optimal thickness, and PCM containers are highlighted. The economic aspects, humidity effect, life cycle assessment, and use of solid‐solid PCMs are cited as potentially important topics for future research.

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“…Nowadays, increasing attention has been paid to the utilization of this technique. T. Berlitz made a comparison of different methods to provide a storing feature to thermal driven absorption chillers and concluded that the internal latent heat storage is a strong alternative to external storage and described the advantages of this kind of storage method [2]. J.J.Rizza has proposed a hybrid system with refrigerant accumulation combined with a normal heat pump system to shift the electric load peak [3].…”

Section: Introductionmentioning

confidence: 99%

Study on LiBr-H<sub>2</sub>O Absorption Refrigeration System with Integral Storage

Yang

2014

AMR

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The absorption thermal energy storage (TES) system stores the energy in the form of potential energy of solution and is a promising technology for efficient energy transformation process. The performance of the absorption refrigeration system with integral storage for cooling applications using LiBr-H2O as working pair under the condition without crystallization was analyzed on the basis of the first law of thermodynamics. Simulation was employed to determine the coefficient of performance (COP) and energy storage density (ESD) of the absorption TES system under different conditions such as the absorption temperature and storage temperature. The results show that the COP of the system is 0.7453 and ESD is 169.853 MJ/m3 under typical operation conditions in summer. A low absorption temperature yields both a higher COP and ESD. The solution heat exchanger could improve the COP of the system while has no effect on ESD. Results also showed that system has a good advantage when compared to other storage methods since it is do no need thermal insulation. The absorption TES may be considered as one of the promising thermal energy storage methods.

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Cooling machine with integrated cold storage

Cited by 9 publications

References 1 publication

Review of Technologies and Recent Advances in Low-Temperature Sorption Thermal Storage Systems

Review of Technologies and Recent Advances in Low-Temperature Sorption Thermal Storage Systems

Improving the performance of air conditioning systems by using phase change materials: A review

Study on LiBr-H<sub>2</sub>O Absorption Refrigeration System with Integral Storage

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