Cold accumulation: methods and modern technical solutions. Thermochemical accumulators
- Authors: Filin S.O.1, Zakshevsky B.1
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Affiliations:
- Szczecin Technical University
- Issue: Vol 91, No 11 (2002)
- Pages: 10-14
- Section: Articles
- URL: https://journal-vniispk.ru/0023-124X/article/view/105897
- DOI: https://doi.org/10.17816/RF105897
- ID: 105897
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Abstract
A principle of operation of the thermochemical accumulator of cold is described. Working substances that are used in them are enumerated: hydrides of metals, gas hydrates, zeolites, components of reversible gas reactions. Schematic presentations of thermochemical accumulators of cold are presented.
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##article.viewOnOriginalSite##About the authors
S. O. Filin
Szczecin Technical University
Author for correspondence.
Email: info@eco-vector.com
D. in Engineering
PolandB. Zakshevsky
Szczecin Technical University
Email: info@eco-vector.com
PhD in Engineering
PolandReferences
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Fig. 1. One-stage thermochemical cycles [3]: а - heat accumulator: 1-2, 2-1 - charging and discharging in ideal conditions, respectively; 1'-2', 2'-1'- charging and discharging in real conditions; b - heat pump: 3-4 - charging and discharging in ideal conditions, respectively; А1 - steam; А2, A3 - adsorbents
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Fig. 2. Schematic diagram of a refrigeration machine with hydride accumulator of cold: 1 - reservoir with low-temperature hydride; 2 - evaporator; 3 - pipeline; 4 - throttling valve (THV); 5 - compressor; 6 - condenser; 7 - reservoir with high-temperature hydride; 8 - fins; 9 - connection channel; 10 - thermal insulation; 11 - cold chamber (cold consumer)
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Fig. 3. Schemes of refrigeration machines with accumulator of cold on gas hydrates: a - direct contact; b - indirect contact; 1 - freon vapor; 2 - water; 3 - gas hydrate; 4 - liquid freon; 5 - evaporator; 6 - pump; 7 - condenser; 8 - compressor; 9 - intermediate heat exchanger
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Fig. 4. Scheme of cold accumulation based on zeolite (a) and accumulation cycle in lnp-1/T diagram for sodium-alumosilicate-water system (b): 1 - tank with zeolite; 2 - condenser; 3 - tank with water; 4 - valve (valve); 5 - evaporator; 6 - built-in heat exchangers; 1-2-3-4 - cycle; * - equilibrium steam pressure lines for different values of specific absorbed water quantity (g/kg); 1', 2' - saturated steam parameters
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