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首页> 外文会议>International Conference on the Domestic Use of Energy >Thermal Performance Analyses of Two Different Configurations of Combined Pebble-PCM Bed Thermal Storage System
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Thermal Performance Analyses of Two Different Configurations of Combined Pebble-PCM Bed Thermal Storage System

机译：两种不同配置的鹅卵石PCM床热存储系统的热性能分析

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Thermal energy storage (TES) systems can be used to cater for the mismatch between the supply and demand of solar thermal energy. The addition of a layer of phase change material (PCM) to the bed of sensible heat storage material in a TES tank has been identified to increase its capacity ratio. Also, the addition of a layer of cheaper sensible heat storage materials to a bed of PCM in a TES tank will help to reduce its cost. Thermal performances of two different configurations of a ratio 1:1 combination of pebble-PCM in a combined TES (CTES) system during charging and subsequent discharging cycles are compared at three different charging flow-rates. CTES tank I is composed of rock pebbles occupying the upper 50% volume of the TES tank while encapsulated adipic acid occupy the bottom 50%. CTES tank II is composed of encapsulated adipic acid occupying the upper 50% volume of the tank while rock pebbles occupy the bottom 50%. The performances of the two configurations of the combined TES systems are analyzed during charging and discharging cycles from the perspectives of energy and exergy. CTES tank I show better performance in terms of both energy and exergy at the lowest flow-rate of 4 mls-1 during both charging and discharging. While CTES-II performed better at the higher flow rates of 8 mls-1 12 mls-1. However, CTES tank I show the best overall efficiencies (energy and exergy) at all HTF flow rates.
机译：热能存储（TES）系统可用于满足太阳能热能供需之间的不匹配。已经鉴定了将一层相变材料（PCM）（PCM）识别到特斯坦罐中的可汗储热材料床中以增加其容量比。而且，在TES罐中加入到PCM的床上将一层更便宜的储热材料将有助于降低其成本。在充电期间，在充电期间，在充电期间，在充电期间，在组合的TES（CTES）系统中的比例1：1的组合的热性能，并以三种不同的充电流速比较。 CTES罐I由岩石鹅卵石组成，封装的己二酸占据TES罐的较高50％体积的组成，占据底部50％。 CTES罐II由封装的己二酸组成，占据罐的上部50％体积的同时，岩石鹅卵石占据底部50％。在充电和放电期间，分析了组合TES系统的两种配置的性能，从能量和漏洞的角度进行充电和放电循环。 CTES TANK我以4毫升的最低流速显示出能量和低渗的更好的性能 -1 在充电和放电期间。虽然CTES-II以8毫升的较高流速表现更好 -1 12毫升 -1 。然而，CTES坦克我以所有HTF流速显示出最佳的整体效率（能量和漏洞）。

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