Development and Testing of Novel Applications for Adsorption Heat Pumps and Chillers

Jobard, Xavier; Padey, Pierryves; Martin, Guillaume; Duret, Alexis; Pahud, Daniel

doi:10.3390/en13030615

Cited by 5 publications

(2 citation statements)

References 17 publications

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“…The mass and heat transfer were also interpreted using this model. They quantitatively studied the regeneration temperature on the cooling performance [4][5][6][7][8][9].…”

Section: Introductionmentioning

confidence: 99%

Modeling and Simulation of a Two-Stage Air Cooled Adsorption Chiller with Heat Recovery Part I: Physical and Mathematical Performance Model

et al. 2022

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In the proposed work, the MATLAB program was used to model and simulate the performance of the investigated two-stage adsorption chiller with and without heat recovery using an activated carbon/methanol pair. The simulated model results were then validated by the experimental results conducted by Millennium Industries. The model was based on 10th order differential equations; six of them were used to predict bed, evaporator and condenser temperatures while the other four equations were used to calculate the adsorption isotherm and adsorption kinetics. The detailed validation is stated in the next paragraphs; for example, it clearly notes that the simulation model results for the two-stage air cooled chiller are well compared with the experimental data in terms of cooling capacity (6.7 kW for the model compared with 6.14 kW from the experimental results at the same conditions). The Coefficient of Performance (COP) predicted by this simulation was 0.4, which is very close to that given by the Carnot cycle working at the same operating conditions. The model optimized the switching time, adsorption/desorption time and heat recovery time to maximize both cooling capacity and COP. The model optimized the adsorption/desorption cycle time (300 to 400 s), switching cycle time (50 s) and heat recovery cycle time (30 s). The temporal history of bed, evaporator and condenser temperatures is provided by this model for both heat recovery and without heat recovery chiller operation modes. The importance of this study is that it will be used as a basis for future series production.

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“…The mass and heat transfer were also interpreted using this model. They quantitatively studied the regeneration temperature on the cooling performance [4][5][6][7][8][9].…”

Section: Introductionmentioning

confidence: 99%

Modeling and Simulation of a Two-Stage Air Cooled Adsorption Chiller with Heat Recovery Part I: Physical and Mathematical Performance Model

et al. 2022

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“…These innovative conceptual modes of operation have been evaluated separately with numerical models reflecting the current state of the art of the sorption technology and with experimental work carried out on commercial units by (Jobard et al, 2020). It results that the commercial units currently available are not adapted for integration in DHN and do not meet the requirements of DHN operators, especially in terms of temperature drop at the desorber in cooling mode.…”

Section: Introductionmentioning

confidence: 99%

Optimized Adsorption Heat Pump for Efficiency Increase of District Heating Networks

Piccoli,

Civioc,

Galmarini

et al. 2022

Proceedings of EuroSun 2022 - ISES and IEA SHC International Conference on Solar Energy for Buildings and Industry

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Adsorption heat pumps can provide cooling based on renewable district heat or waste heat, thus expanding the scope of district heating networks (DHN) and making better use of existing renewable heat sources. On the other hand, they can also provide heat while significantly reducing the return flow of the district heating network, thus increasing the efficiency of district heating supply. However, commercially available sorption machines are not designed for DHN. Therefore, new and sustainable adsorbent materials ideally suited for the temperatures and applications of district heating networks are developed and incorporated in a heat & mass exchanger designed for reversible adsorption heat pumps. The new sorption heat and mass exchanger is subjected to performance measurements. The results are used to carry out simulations to demonstrate the advantages of adsorption heat pumps for the supply of cooling and heating in district heating networks.

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Installation of Solar Thermal Adsorption Chiller and its Test Bench Performance Analysis

AbdurRehman,

Umer,

Nazir

et al. 2023

2023 International Conference on Emerging Power Technologies (ICEPT)

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Development and Testing of Novel Applications for Adsorption Heat Pumps and Chillers

Cited by 5 publications

References 17 publications

Modeling and Simulation of a Two-Stage Air Cooled Adsorption Chiller with Heat Recovery Part I: Physical and Mathematical Performance Model

Modeling and Simulation of a Two-Stage Air Cooled Adsorption Chiller with Heat Recovery Part I: Physical and Mathematical Performance Model

Optimized Adsorption Heat Pump for Efficiency Increase of District Heating Networks

Installation of Solar Thermal Adsorption Chiller and its Test Bench Performance Analysis

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