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基于響應(yīng)面法的表冷器-風(fēng)機集放熱系統(tǒng)參數(shù)優(yōu)化
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國家現(xiàn)代農(nóng)業(yè)產(chǎn)業(yè)技術(shù)體系建設(shè)專項資金項目(CARS-23-C02)、浙江省科技計劃項目(2019C02009)和河北省重點研發(fā)計劃項目(20327209D)


Parameters Optimization of Greenhouse Air-cooled Condenser Heat Collection and Release System by Response Surface Method
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    摘要:

    為發(fā)揮表冷器-風(fēng)機集放熱系統(tǒng)的最佳性能,,以提高熱流量和性能系數(shù)(COP)為優(yōu)化目標(biāo),,選取空氣-循環(huán)水的溫度差(水氣溫差)、水流速和風(fēng)速3個關(guān)鍵影響因素,,分別進行了單因素和三因素三水平響應(yīng)面優(yōu)化試驗,。結(jié)果表明:在水流速和風(fēng)速不變的條件下,熱流量和性能系數(shù)隨水氣溫差的增大而線性增大,;在水氣溫差不變的條件下,,熱流量隨水流速或風(fēng)速的增大而增大,性能系數(shù)呈先增大后減小的趨勢,。由響應(yīng)面法得出各影響因素對熱流量影響由大到小依次為水流速,、風(fēng)速、水氣溫差,,對性能系數(shù)影響由大到小依次為風(fēng)速,、水流速、水氣溫差,;系統(tǒng)的優(yōu)化調(diào)控參數(shù)為:風(fēng)速1.91m/s,、水流速1.23m/s、水氣溫差5.8℃,,此時熱流量為5.88kW,,性能系數(shù)為4.9。說明響應(yīng)面法用于優(yōu)化表冷器-風(fēng)機集放熱系統(tǒng)調(diào)控參數(shù)可行。本研究為此類集放熱系統(tǒng)高效,、節(jié)能運行提供了一種參數(shù)調(diào)控優(yōu)化方法,。

    Abstract:

    To maximize the performance of the aircooled condenser heat collection and release system, with the goal of improving heat transfer rate and COP, three key influencing factors, i.e., the air and circulating water temperature difference (air and water temperature difference), water flow velocity and air velocity were selected as independent variables, and the best control parameters were obtained through the threefactor threelevel response surface method (RSM). The results showed that under the condition of constant water flow velocity and air velocity, heat transfer rate and COP were increased linearly with the increase of air and water temperature difference. Under the condition that the air and water temperature difference was constant, the heat transfer rate was increased with the increase of the water flow velocity or air velocity, but the COP tended to increase first and then decrease. Further, the RSM was used to draw the significance order of the three factors on heat transfer rate as descending order was as follows: water flow velocity, air velocity, and air and water temperature difference, the significance order of the three factors on COP as descending order was as follows: air velocity, water flow velocity, and air and water temperature difference. The optimal control parameters of the system were: air velocity of 1.91m/s, water flow velocity of 1.23m/s, and air and water temperature difference of 5.8℃, under this operating condition, the heat transfer rate was 5.88kW, and the COP was 4.9. Therefore, it was feasible to use the RSM to optimize the parameters of the greenhouse heat collection and release system. This study provided an optimization method of the operating parameters for the efficient and energysaving operation of this type of heat collection and release system. The full play of the performance of the aircooled condenser heat collection and release system provided data support. 

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何雪穎,王平智,李明,宋衛(wèi)堂.基于響應(yīng)面法的表冷器-風(fēng)機集放熱系統(tǒng)參數(shù)優(yōu)化[J].農(nóng)業(yè)機械學(xué)報,2020,51(12):315-323. HE Xueying, WANG Pingzhi, LI Ming, SONG Weitang. Parameters Optimization of Greenhouse Air-cooled Condenser Heat Collection and Release System by Response Surface Method[J]. Transactions of the Chinese Society for Agricultural Machinery,2020,51(12):315-323.

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  • 收稿日期:2020-07-29
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  • 在線發(fā)布日期: 2020-12-10
  • 出版日期: 2020-12-10
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