Compact and efficient generator for low grade solar and waste heat driven absorption systems

Mortazavi, Mehdi; Schmid, M.; Moghaddam, Saeed

doi:10.1016/j.apenergy.2017.04.054

Cited by 16 publications

(3 citation statements)

References 24 publications

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“…Garimella et al proposed a novel absorption–compression system in cascade with a LiBr/H 2 O absorption cycle and a subcritical CO 2 vapor compression cycle . Boman et al developed a method to compare absorption heat pump working pairs and to screen working pairs for adsorption heat pumps on the basis of thermodynamic and transport characteristics. , Yang et al proposed a low-grade waste-heat-driven cascade absorption heat pump system and conducted an economic evaluation based on thermodynamic analysis. , Mortazavi et al built and tested a compact plate and frame generator for low-grade solar and waste-heat-driven absorption systems . The cascade refrigeration system was used to generate −40 °C cooling energy.…”

Section: Introductionmentioning

confidence: 99%

Performance Analysis of a Novel Cascade Absorption Refrigeration for Low-Grade Waste Heat Recovery

Yang

Wang

Gao

et al. 2018

ACS Sustainable Chem. Eng.

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Absorption refrigeration (AR) systems have been extensively used for utilizing waste heat from industrial plants. In this paper, a novel cascade absorption refrigeration (NCAR) is proposed to produce −40 °C cold energy via using low-grade waste heat. The developed system consists of an NH3/H2O AR cycle and LiBr/H2O AR cycle. A simulation study is conducted, on the basis of the revised model built in Aspen Plus. The impacts of feed concentration, generator temperature, low-pressure part pressure, high-pressure part pressure, and concentration range are investigated to offer guidance for NCAR designs. In addition, the developed NCAR aims to obtain a highest coefficiency of performance (COP). The maximum of COP is 0.19, and the exergy efficiency of NCAR reaches 9.71%. The economic performance of NCAR is compared with the industrial application. The results indicate that NCAR has an excellent adaptability. This present work proposes a novel method for producing low-temperature cold energy from low-grade waste heat.

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Section: Introductionmentioning

confidence: 99%

Performance Analysis of a Novel Cascade Absorption Refrigeration for Low-Grade Waste Heat Recovery

Yang

Wang

Gao

et al. 2018

ACS Sustainable Chem. Eng.

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“…Researchers have proposed patterned surfaces that enhance gas-to-liquid mixing and surface area by perturbing the liquid flow. 22–24 Similarly, packing surfaces have been designed to promote micro-mixing 25 and surface-induced vortices. 26 Novel packing structures, like ceramic foams and spherical meshes, have resulted in advances such as increased maximum fluid loads and reduced pressure drop.…”

Section: Introductionmentioning

confidence: 99%

3D printed triply periodic minimal surfaces as advanced structured packings for solvent-based CO₂ capture

Ellebracht

Roy

Moore

et al. 2023

Energy Environ. Sci.

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“…Malinina et al [17] analyzed the influences of temperature and humidity on a solar energy refrigeration system with LiBr/H 2 O and calculated the minimum heat-collecting temperatures that are based on solar energy in some cities. Mortazavi et al [18] designed an absorption refrigeration system with a falling-film generator, which could use lower temperature waste heat or solar energy. Bourouis et al [19] analyzed the performance of LiBr + LiNO 3 + LiCl + LiI + H 2 O in a vertical tube and found that the crystallization temperature was 35 • C lower than LiBr solution.…”

Section: Introductionmentioning

confidence: 99%

Study on a Quaternary Working Pair of CaCl2-LiNO3-KNO3/H2O for an Absorption Refrigeration Cycle

Li²,

Luo

et al. 2019

Entropy

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When compared with LiBr/H2O, an absorption refrigeration cycle using CaCl2/H2O as the working pair needs a lower driving heat source temperature, that is, CaCl2/H2O has a better refrigeration characteristic. However, the crystallization temperature of CaCl2/H2O solution is too high and its absorption ability is not high enough to achieve an evaporation temperature of 5 °C or lower. CaCl2-LiNO3-KNO3(15.5:5:1)/H2O was proposed and its crystallization temperature, saturated vapor pressure, density, viscosity, specific heat capacity, specific entropy, and specific enthalpy were measured to retain the refrigeration characteristic of CaCl2/H2O and solve its problems. Under the same conditions, the generation temperature for an absorption refrigeration cycle with CaCl2-LiNO3-KNO3(15.5:5:1)/H2O was 7.0 °C lower than that with LiBr/H2O. Moreover, the cycle’s COP and exergy efficiency with CaCl2-LiNO3-KNO3(15.5:5:1)/H2O were approximately 0.04 and 0.06 higher than those with LiBr/H2O, respectively. The corrosion rates of carbon steel and copper for the proposed working pair were 14.31 μm∙y−1 and 2.04 μm∙y−1 at 80 °C and pH 9.7, respectively, which were low enough for engineering applications.

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Compact and efficient generator for low grade solar and waste heat driven absorption systems

Cited by 16 publications

References 24 publications

Performance Analysis of a Novel Cascade Absorption Refrigeration for Low-Grade Waste Heat Recovery

Performance Analysis of a Novel Cascade Absorption Refrigeration for Low-Grade Waste Heat Recovery

3D printed triply periodic minimal surfaces as advanced structured packings for solvent-based CO₂ capture

Study on a Quaternary Working Pair of CaCl2-LiNO3-KNO3/H2O for an Absorption Refrigeration Cycle

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Compact and efficient generator for low grade solar and waste heat driven absorption systems

Cited by 16 publications

References 24 publications

Performance Analysis of a Novel Cascade Absorption Refrigeration for Low-Grade Waste Heat Recovery

Performance Analysis of a Novel Cascade Absorption Refrigeration for Low-Grade Waste Heat Recovery

3D printed triply periodic minimal surfaces as advanced structured packings for solvent-based CO2 capture

Study on a Quaternary Working Pair of CaCl2-LiNO3-KNO3/H2O for an Absorption Refrigeration Cycle

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Product

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3D printed triply periodic minimal surfaces as advanced structured packings for solvent-based CO₂ capture