Measurement of metal-sorbent heat transfer coefficients for the heat release stage of an adsorption heat pump: Pressure jump vs Temperature jump

IF 6.4 2区工程技术 Q1 MECHANICS

International Communications in Heat and Mass Transfer Pub Date : 2025-10-02 DOI:10.1016/j.icheatmasstransfer.2025.109748

A.D. Grekova, A.V. Cherpakova, M.M. Tokarev

引用次数: 0

Abstract

Adsorption heat pumping is eco-friendly application that enables energy saving. Process efficiency can be increased by heat transfer enhancement with adsorber-heat-exchanger optimization. Two different methods for measuring metal-sorbent heat transfer coefficients α are discussed: Large Temperature/Pressure Jump. Novel composite LiCl/highly-porous silica was used as sorbent. These methods simulate adsorption heat storage cycle and give possibility to measure α for grains with size D = 0.8–0.9, 0.4–0.5 and 0.2–0.25 mm. The coefficients measured by different methods are close: 160–170 W/m²K for the largest, 250–270 W/m²K for intermediate and 420–460 W/m²K for the smallest grains. The linear function connecting α and 1/D was found.

查看原文本刊更多论文

吸附式热泵放热阶段金属吸附剂传热系数的测量：压力跃变vs温度跃变

吸附式热泵是一种环保节能的应用。通过优化吸附剂-换热器的传热，可以提高工艺效率。讨论了两种不同的测量金属吸附剂传热系数α的方法：采用新型复合LiCl/高孔二氧化硅作为吸附剂。这些方法模拟了吸附蓄热循环，为测量粒径D = 0.8 ~ 0.9、0.4 ~ 0.5和0.2 ~ 0.25 mm晶粒的α提供了可能。不同方法测得的系数相近，最大颗粒为160 ~ 170 W/m2K，中间颗粒为250 ~ 270 W/m2K，最小颗粒为420 ~ 460 W/m2K。得到α与1/D之间的线性函数。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

International Communications in Heat and Mass Transfer 工程技术-力学

CiteScore

11.00

自引率

10.00%

发文量

648

审稿时长

32 days

期刊介绍： International Communications in Heat and Mass Transfer serves as a world forum for the rapid dissemination of new ideas, new measurement techniques, preliminary findings of ongoing investigations, discussions, and criticisms in the field of heat and mass transfer. Two types of manuscript will be considered for publication: communications (short reports of new work or discussions of work which has already been published) and summaries (abstracts of reports, theses or manuscripts which are too long for publication in full). Together with its companion publication, International Journal of Heat and Mass Transfer, with which it shares the same Board of Editors, this journal is read by research workers and engineers throughout the world.