【摘要】：全球總能耗一直處于穩(wěn)定增長(zhǎng)中且近期沒有下降的跡象。對(duì)制冷的需求是導(dǎo)致能耗增加的主要原因之一，據(jù)估計(jì)制冷與空氣調(diào)節(jié)系統(tǒng)的能耗約占全球總能耗的30%。因此，為了降低制冷系統(tǒng)的能耗，本課題研究了節(jié)能環(huán)保型吸附式制冷系統(tǒng)這一可持續(xù)的能量利用方式。本文對(duì)一臺(tái)采用氯化鋰-硅膠復(fù)合吸附劑的吸附制冷機(jī)組進(jìn)行了理論和實(shí)驗(yàn)研究，研究?jī)?nèi)容主要包含不同循環(huán)的優(yōu)化，工質(zhì)對(duì)和工況對(duì)性能的影響。 實(shí)驗(yàn)結(jié)果顯示在熱水進(jìn)口平均溫度為83oC，，冷卻水進(jìn)口平均溫度為26oC，冷凍水進(jìn)口平均溫度為15oC的實(shí)驗(yàn)工況下，測(cè)得的單位體積平均制冷量(SCP)和性能系數(shù)(COP)分別為286W/kg和0.48。測(cè)試時(shí)熱水，冷卻水，冷凍水的流量分別為0.22kg/s,0.39kg/s和0.09kg/s。盡管SCP和COP的實(shí)驗(yàn)結(jié)果已經(jīng)令人滿意，但通過對(duì)不同循環(huán)時(shí)間，進(jìn)口熱水溫度和熱水流量的進(jìn)一步分析表明該機(jī)組可以實(shí)現(xiàn)更好的性能。實(shí)驗(yàn)得到的主要結(jié)論如下：(1)COP隨SCP量的增大和循環(huán)時(shí)間的減小而增大；(2)當(dāng)回?zé)峄刭|(zhì)時(shí)間低于最優(yōu)時(shí)間時(shí)，COP和SCP隨其增大而增大；當(dāng)回?zé)釙r(shí)間高于最優(yōu)時(shí)間時(shí)，COP和SCP隨其增大而減��；(2)當(dāng)熱水進(jìn)口溫度處于60oC到90oC的范圍內(nèi)時(shí)，COP和SCP隨進(jìn)口熱水溫度的提高而增大，當(dāng)超出90oC時(shí)其增大速率降低；（4）熱水流量的增大會(huì)導(dǎo)致SCP的增大同時(shí)COP的降低，而熱水流量的降低會(huì)導(dǎo)致SCP的降低和COP的增大。本研究推薦的該機(jī)組的最佳吸附/解析時(shí)間，回?zé)釙r(shí)間，熱水進(jìn)口溫度和熱水流量分別為780s，60s，83oC和0.22kg/s。
[Abstract]:Global total energy consumption has been in steady growth and there is no sign of a recent decline. The demand for refrigeration is one of the main reasons for the increase in energy consumption. It is estimated that the energy consumption of refrigeration and air conditioning systems accounts for about 30% of the global total energy consumption. Therefore, in order to reduce the energy consumption of refrigeration system, the energy saving and environmental protection type adsorption refrigeration system is studied. In this paper, the theoretical and experimental study of a adsorption refrigeration unit with lithium chloride / silica gel composite adsorbent is carried out. The main contents of the study include the optimization of different cycles, the effects of working conditions and working conditions on the performance. The experimental results show that under the experimental conditions where the average inlet temperature of hot water is 83 OC, the average inlet temperature of cooling water is 26 OC and the average inlet temperature of frozen water is 15oC, the measured unit volume average refrigerating capacity (SCP) and performance coefficient (COP) are 286W/kg and 0.48 respectively. The flow rates of hot water, cooling water and frozen water were 0.22 kg / s 0.39 kg / s and 0.09 kg / s respectively. Although the experimental results of SCP and COP are satisfactory, the further analysis of different cycle time, inlet hot water temperature and hot water flow shows that the unit can achieve better performance. The main conclusions are as follows: (1) the COP increases with the increase of SCP and the cycle time, (2) the cop and SCP increase with the increase of the regenerative time when the regenerative time is lower than the optimal time. (2) when the inlet temperature of hot water is within the range of 60oC to 90oC, the cop and SCP increase with the increase of the inlet temperature of hot water, and the increasing rate decreases with the increase of the inlet temperature of hot water. (4) the increase of hot water flow will lead to the increase of SCP and the decrease of COP, while the decrease of hot water flow will lead to the decrease of SCP and COP. The optimum adsorption / desorption time, regenerative time, inlet temperature and flow rate of hot water are 780sm ~ (60) sm ~ (83) OC and 0.22 kg / s, respectively.
【學(xué)位授予單位】：上海交通大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類號(hào)】：TB657

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相關(guān)期刊論文 前2條

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本文編號(hào)：2258173