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制热工况下,随着排气温度的升高,制热能效比逐渐下降,在实际运行时需要降低排气温度以提高机组性能。制冷工况下,针对R32全新风处理机组高排气温度的特性进行逐级喷液,并对比分析了制冷工况下不喷液、喷液控制排气温度分别为90℃和80℃3种情况下机组制冷量和输入功率变化。制冷工况下,随着排气温度的升高,制冷能效比先增大后减小。拟合出排气温度与能效比的数值关系式,并用判定系数R2判别数值关系式的相关性。依据数值关系式可有效预测任一排气温度下R32机组的能效比,为制冷工况下机组的性能提供参考。
Heating conditions, with the exhaust temperature, heating energy efficiency gradually decreased, in the actual operation of the exhaust temperature needs to be reduced to improve the unit performance. According to the characteristics of high discharge temperature of R32 new wind treatment unit, the characteristics of high discharge air temperature were sprayed step by step under the refrigeration condition. The non-injection liquid under the cooling condition was compared and analyzed. The discharge temperature of the discharge control liquid was 90 ℃ and 80 ℃ respectively Case unit cooling capacity and input power changes. Under cooling conditions, with the increase of exhaust gas temperature, the cooling energy efficiency ratio first increases and then decreases. Fitting out the exhaust gas temperature and energy efficiency of the numerical relationship, and determine the coefficient R2 to determine the relationship between the numerical relationship. According to the numerical relation, the energy efficiency ratio of R32 unit at any exhaust temperature can be effectively predicted, which provides a reference for the performance of the unit under cooling conditions.