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000889922 1001_ $$0P:(DE-HGF)0$$aEngelpracht, Mirko$$b0
000889922 245__ $$aUpgrading Waste Heat from 90 to 110 °C: The Potential of Adsorption Heat Transformation
000889922 260__ $$aWeinheim [u.a.]$$bWiley-VCH$$c2021
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000889922 520__ $$aLow‐grade heat is abundantly available below 100 °C, whereas industry mainly needs heat above 100 °C. Thus, the industry cannot directly utilize low‐grade heat to save primary energy and emissions. Low‐grade heat can be utilized by adsorption heat transformers (AdHTs); however, closed AdHTs to upgrade heat above 100 °C are only investigated by idealized steady‐state analyses, which indicate the maximal theoretical performance. For evaluating the performance achievable in practice, this work studies a closed AdHT in a one‐bed configuration using dynamic simulation. For the working pair AQSOA‐Z02/H2O, the performance is optimized via the design of the adsorber heat exchanger and the control of the AdHT cycle. When heat is upgraded from 90 to 110 °C, releasing waste heat at 35 °C, the maximum exergetic coefficient of performance (COPexergetic) is 0.64, and the maximum specific heating power (SHP) is 590 W kg−1. The maximum SHP can increase by 35% when releasing waste heat at 25 °C. Both performance indicators strongly depend on design, control, and the available temperature of the waste heat. Overall, AdHTs with optimized design and control are promising to utilize low‐grade waste heat.
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000889922 7001_ $$0P:(DE-HGF)0$$aGibelhaus, Andrej$$b1
000889922 7001_ $$0P:(DE-HGF)0$$aSeiler, Jan$$b2
000889922 7001_ $$0P:(DE-HGF)0$$aGraf, Stefan$$b3
000889922 7001_ $$0P:(DE-HGF)0$$aNasruddin, Nasruddin$$b4
000889922 7001_ $$0P:(DE-Juel1)172023$$aBardow, André$$b5$$eCorresponding author$$ufzj
000889922 773__ $$0PERI:(DE-600)2700412-0$$a10.1002/ente.202000643$$gVol. 9, no. 1, p. 2000643 -$$n1$$p2000643 -$$tEnergy technology$$v9$$x2194-4296$$y2021
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