本文選題：太陽能 + 吸附制冷　； 參考：《云南師范大學(xué)》2016年碩士論文

【摘要】：本文設(shè)計和搭建了基于太陽能熱水供能的水浴式固體吸附制冷系統(tǒng),可解決傳統(tǒng)平板型翅片管式固體吸附制冷系統(tǒng)存在的以下問題:一、在加熱解吸階段吸附床受熱不均勻而導(dǎo)致制冷劑的解吸量較少,二、在冷卻吸附階段吸附床采用自然降溫冷卻而導(dǎo)致其冷卻速率較慢,三、由于太陽輻射的不穩(wěn)定而導(dǎo)致系統(tǒng)制冷性能變化較大。從系統(tǒng)結(jié)構(gòu)及性能優(yōu)化等方面,本文開展了以下研究工作:1、從優(yōu)化系統(tǒng)制冷性能的角度出發(fā),通過理論計算,設(shè)計和制作了一種儲熱與供熱一體的翅片管式吸附制冷系統(tǒng),并完成了系統(tǒng)的搭建及運行調(diào)試。2、針對設(shè)計的翅片管型太陽能水浴式吸附制冷系統(tǒng),將翅片同心管吸附床放置于保溫水箱中,采用熱水浴進行加熱解/吸附,通過實驗研究了吸附床在維持解吸溫度分別為94℃、85℃、75℃及加熱至94℃后自然冷卻時的溫度分布及特點。3、以太陽能熱水及電模擬輔助加熱作為驅(qū)動熱源,在解吸階段對置于保溫水箱內(nèi)的吸附床進行加熱,解吸吸附床內(nèi)的制冷劑。采用實驗方法研究了解吸溫度和解吸時間對系統(tǒng)制冷性能的影響。結(jié)果表明,解吸溫度對太陽能水浴式固體吸附式制冷系統(tǒng)的性能具有較大的影響,解吸階段較高的解吸溫度有利于制冷劑的解吸。延長加熱解吸時間可以提高系統(tǒng)的日制冰量和直接制冷量,但同時系統(tǒng)散熱量也隨之增大,維持系統(tǒng)運行條件而由外界輸入的能量隨之增大,系統(tǒng)循環(huán)COP與系統(tǒng)的熱利用率下降。系統(tǒng)存在一個較佳的加熱解吸時間10h,更長的解吸時間對系統(tǒng)制冷性影響不大。4、通過實驗研究了控制傳質(zhì)過程和無傳質(zhì)過程控制時太陽能吸附制冷系統(tǒng)在不同加熱解吸時間條件下系統(tǒng)的制冷性能。在加熱解吸時間相同的條件下,無傳質(zhì)過程控制系統(tǒng)的制冷性能尤為優(yōu)越,其平均制冷效率高出20%,其平均日制冰量是控制傳質(zhì)過程系統(tǒng)的1.16倍。5、針對無傳質(zhì)過程控制的系統(tǒng),采用控制冷凝溫度的方法來研究系統(tǒng)的性能。無傳質(zhì)過程控制的太陽能吸附式制冷系統(tǒng)在接收外界輸入能量相當?shù)那闆r下,隨著冷凝溫度的逐漸降低,系統(tǒng)制冷性能系數(shù)逐漸增大。系統(tǒng)的制冷性能受冷凝溫度的影響頗大。本文所提出的太陽能水浴式固體吸附制冷系統(tǒng),在保證冷量穩(wěn)定輸出的同時還可為用戶提供一定品質(zhì)的熱能。所得結(jié)論為固體吸附制冷技術(shù)的進一步研究和實際運用提供了基本理論指導(dǎo)和實驗參考,也為多效制冷循環(huán)系統(tǒng)的研究提供相關(guān)的實驗依據(jù)。
[Abstract]:In this paper, a water-bath solid adsorption refrigeration system based on solar hot water supply is designed and built, which can solve the following problems in the traditional flat fin tube solid adsorption refrigeration system: 1. The adsorption bed is heated inhomogeneously in the stage of heating and desorption, which results in less desorption of refrigerant. Second, the adsorption bed is cooled by natural cooling in the stage of cooling and desorption, and the cooling rate of adsorption bed is slow. Because of the instability of solar radiation, the refrigeration performance of the system changes greatly. From the aspects of system structure and performance optimization, this paper has carried out the following research work: 1. From the point of view of optimizing the refrigeration performance of the system, through theoretical calculation, a finned tube adsorption refrigeration system integrating heat storage and heat supply is designed and manufactured. And completed the system construction and operation debugging. 2. Aiming at the design of the finned tube type solar water bath adsorption refrigeration system, the finned concentric tube adsorption bed was placed in the heat preservation tank, and the hot water bath was used for the heating desorption / adsorption. The temperature distribution and characteristics of adsorption bed during natural cooling after maintaining desorption temperature of 94 鈩，

本文編號：1988032