Kinetic Investigation of PbCl<sub>2</sub> Composite Adsorbent-NH<sub>3 </sub>Adsorption Refrigeration System Driven by Ultra-Low-Grade Waste Heat from Data Centers

Chen Linrui Yuan Bingzhi Zhang Chen Chen Xiaoou Wang Liwei

doi:10.12465/issn.0253-4339.20250715002

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Kinetic Investigation of PbCl₂ Composite Adsorbent-NH₃Adsorption Refrigeration System Driven by Ultra-Low-Grade Waste Heat from Data Centers

更新时间：2026-10-13

- Kinetic Investigation of PbCl₂ Composite Adsorbent-NH₃Adsorption Refrigeration System Driven by Ultra-Low-Grade Waste Heat from Data Centers
- Journal of Refrigeration Vol. 47, Issue 5, Pages: 41-51(2026)
- 作者机构：
  
  上海交通大学机械与动力工程学院上海 200240
- 作者简介：
  
  Wang Liwei， female， professor， School of Mechanical Engineering， Shanghai Jiao Tong University， 86-13585984675， E-mail： lwwang@sjtu.edu.cn. Research fields： ammonia storage and utilization， thermally driven energy conversion cycle， carbon capture， flow battery.
- 基金信息：
  
  the National Natural Science Foundation of China(52236004)
- DOI：10.12465/issn.0253-4339.20250715002
  CLC： TB61⁺1;TK115;TQ028.15
- Received：15 July 2025，
  
  Revised：2025-08-04，
  
  Accepted：27 August 2025，
  
  Published：16 October 2026
- 稿件说明：
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陈林蕊,袁炳志,张宸等.基于数据中心超低温余热驱动的PbCl₂复合吸附剂-NH₃吸附制冷和动力学特性研究[J].制冷学报,2026,47(05):41-51. DOI: 10.12465/issn.0253-4339.20250715002.

Chen Linrui Yuan Bingzhi Zhang Chen Chen Xiaoou Wang Liwei.Kinetic Investigation of PbCl₂ Composite Adsorbent-NH₃Adsorption Refrigeration System Driven by Ultra-Low-Grade Waste Heat from Data Centers[J].Journal of Refrigeration,2026,47(05):41-51. DOI: 10.12465/issn.0253-4339.20250715002.
陈林蕊,袁炳志,张宸等.基于数据中心超低温余热驱动的PbCl₂复合吸附剂-NH₃吸附制冷和动力学特性研究[J].制冷学报,2026,47(05):41-51. DOI: 10.12465/issn.0253-4339.20250715002. DOI：

Chen Linrui Yuan Bingzhi Zhang Chen Chen Xiaoou Wang Liwei.Kinetic Investigation of PbCl₂ Composite Adsorbent-NH₃Adsorption Refrigeration System Driven by Ultra-Low-Grade Waste Heat from Data Centers[J].Journal of Refrigeration,2026,47(05):41-51. DOI: 10.12465/issn.0253-4339.20250715002. DOI：

摘要

为实现数据中心低温余热的高效回收利用，本文系统研究了PbCl

复合吸附剂-NH

的吸附解吸及制冷性能，并构建适用于系统尺度的新型动力学模型。结果表明：在30 ℃环境温度下，PbCl

复合吸附剂在52 ℃时循环吸附量达0.295 g/g；在10~25 ℃蒸发温度区间内可以实现有效吸附。系统COP随着蒸发温度的升高从0.26提升至0.44，解吸温度存在最优区间，在48 ℃时综合性能达到最优。动力学建模方面，准二级模型虽能较好地描述吸附过程，但在解吸过程拟合误差较大；Sigmoid模型更适合描述典型的单峰式动力学行为，对吸附初期速率变化的描述能力有限。相比之下，本文引入的不完全Gamma函数模型通过灵活可调的形状因子和时间尺度系数，分别控制曲线形貌与拖尾行为，在吸附与解吸过程中的拟合优度分别达到99.1%和97.3%。该模型可准确刻画全过程动力学特征，有效弥补传统模型参数波动大、计算复杂及在系统尺度适应性差等不足，为低温吸附制冷系统的建模优化与工程应用提供了理论支持。

Abstract

To achieve the efficient recovery and utilization of low-grade waste heat from data centers， this study systematically investigates the adsorption-desorption characteristics and refrigeration performances of the PbCl

composite adsorbent -NH

， and establishes a novel system-scale kinetic model. The results indicate that at an ambient temperature of 30 ℃， the PbCl

adsorbent achieves a cyclic adsorption capacity of 0.295 g/g at 52 ℃， with effective adsorption observed within t

he evaporating temperature range of 10 ℃ to 25 ℃. The coefficient of performance （COP） of the system increases from 0.26 to 0.44 with the increase of evaporating temperature. There is an optimal range for the desorption temperature， and the comprehensive performance is optimized at 48 ℃. With respect to kinetic modeling， although the pseudo-second-order model adequately described the adsorption process， it exhibited substantial fitting errors during desorption. While the Sigmoid model better captures the typical unimodal kinetic behavior， it lacks the accuracy when describing the variations of initial rate. In contrast， the newly proposed model of incomplete Gamma function， which has a flexibly adjustable shape factor and time-scale coefficient， can control the curve morphology and tailing behavior， achieving goodness of fit values of 99.1% and 97.3% for the adsorption and desorption processes， respectively. This model can accurately characterize the entire kinetic process， effectively overcoming the shortcomings of traditional models， such as large parameter fluctuation， complex calculation， and poor adaptability at the system scale. The proposed model provides theoretical support for the modeling optimization and engineering application of low-temperature adsorption refrigeration systems.

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Kinetic Investigation of PbCl2 Composite Adsorbent-NH3 Adsorption Refrigeration System Driven by Ultra-Low-Grade Waste Heat from Data Centers

DOI：10.12465/issn.0253-4339.20250715002

摘要

Abstract

关键词

Keywords

references

Kinetic Investigation of PbCl₂ Composite Adsorbent-NH₃Adsorption Refrigeration System Driven by Ultra-Low-Grade Waste Heat from Data Centers