CAJ | 학술논문

为了提高太阳能水纯化热水一体化的集热性能及产水率，该文介绍了系统的工作原理，建立太阳能水纯化热水一体化能量转化和传递模型。采用双真空热管集热，设计了蒸发、冷凝水箱及蓄热水箱，建造了Φ58 mm×1.8 m×24玻璃双真空热管集热试验装置。运用软件Matlab数值运算与试验对比，结果表明：蓄热温度从50℃到70℃，系统产水率及性能系数先随着蓄热温度升高而增大，至60℃左右最大，然后随着蓄热温度升高而减小。60℃定温蓄热比60℃定量蓄热日产水量高847.9 mL，总性能系数增加0.102，产水率增加0.056。此外试验研究了不蓄热工况的系统性能，产水量为5978.4 mL，系统总性能系数1.2498，产水率0.468，比60℃定温蓄热工况下性能系数低0.3979，产水率减小0.219。该文的研究为太阳能热水系统与海水淡化相结合具有参考和利用价值。
위료제고태양능수순화열수일체화적집열성능급산수솔，해문개소료계통적공작원리，건립태양능수순화열수일체화능량전화화전체모형。채용쌍진공열관집열，설계료증발、냉응수상급축열수상，건조료Φ58 mm×1.8 m×24파리쌍진공열관집열시험장치。운용연건Matlab수치운산여시험대비，결과표명：축열온도종50℃도70℃，계통산수솔급성능계수선수착축열온도승고이증대，지60℃좌우최대，연후수착축열온도승고이감소。60℃정온축열비60℃정량축열일산수량고847.9 mL，총성능계수증가0.102，산수솔증가0.056。차외시험연구료불축열공황적계통성능，산수량위5978.4 mL，계통총성능계수1.2498，산수솔0.468，비60℃정온축열공황하성능계수저0.3979，산수솔감소0.219。해문적연구위태양능열수계통여해수담화상결합구유삼고화이용개치。
In this paper, the solar hot water and pure water co-production system was built and the mathematical model of energy conversion and transmission was established based on the system’s operation, which aimed to improve the thermal performance and water productivity of the system experimentally and theoretically. The double evacuated tube solar collector was integrated into the desalination stills to ensure the continuity production of distillate. The evaporation-condensation tank and the heat storage water tank were designed and built with aφ58 mm×1.8 m×24 double evacuated heat pipe, a hot water tank capacity of 109.2 L, an evaporation area of 0.6235 m2, a condensation water tank capacity of 124.8 L, a condensation area of 0.7092 m2, and a heat storage water tank of 200 L. The governing energy balance equations were solved analytically with Matlab software and compared with the experimental results. The results indicated that water productivity and performance coefficient increased first and then decreased with the increase of temperature at a certain temperature range (50-70℃). It was found that the productivity of water and the coefficient of performance increased to a maximum at 60℃. The constant temperature (60℃) heat storage had a significant advantage in terms of superior performance as compared to quantitative heat storage at 60℃. The increments of the distilled water productivity, the total coefficient of performance, and the gained output ratio were 950 mL, 0.102 and 0.056 respectively. Furthermore, the system performance was conducted without heat storage. The distilled water productivity, the overall system coefficient of performance, and the gained output ratio were 5 978.4 mL, 1.2498 and 0.468, respectively. The decrease of the coefficient of performance and the gained output ratio were 0.1979 and 0.219, compared with constant temperature heat storage at 60℃. Finally, the water quality of the distilled water was also tested It was found that each parameter test result of water quality reached the standard of drinking water, including the sensory index, chemical index, bacteriological index, and toxicology index. The pH of distilled water was increased from 6.98 to 7.6, and its weakly alkaline properties excellently accorded withhuman body physiological needs. The chromaticity of the distilled water was reduced from 12 to 4.2, and chloride content and fluoride content were reduced from 360.3 to 2.5 mg/L and from 1.38 to 0.08 mg/L, respectively. The total hardness and total soluble solids were reduced from 275.62 to 4 mg/L and from 639.6 to 12 mg/L, oxygen consumption was decreased from 2.8 to 0.54 mg/L, the iron and manganese content had been reduced from 0.29 to 0.2 mg/L and from 0.16 to 0.04 mg/L as well, and total coliforms and toxicity index in water were not detected. The percent of pass of the system was obtained as 100%.The proposed method could be used to provide living hot water and drinking water for brackish water areas, coastal areas, and overseas islands, and has very good social and economic value.