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中文摘要：
本试验利用焓差实验室构建空调器实际使用环境，对相同条件下的定频、变频空调器的性能进行对比试验研究。试验数据表明：在室内温度27℃、设定温度相等的条件下，室外温度从29℃到41℃每增加3℃：（1）定频空调器制冷量平均降低约1．64％，最大可降低2．2％，变频空调器制冷量平均降低约1．3％，最大降低1．87％，变频空调器受室外温度影响较小，制冷效果更加稳定；（2）定频、变频空调器输入功率平均增加2．55％和4．16％，输入功率最大增加率分别为4．34％和7．74％，室外温度对变频空调器输入功率影响较大；（3）定、变频机运行过程中耗电量相同时的时间将延后38．3％，变频机需要更长的时间才能体现出节能优势。
英文摘要：
The experimentations of performance of constant - speed air - conditioner and variable - speed air - conditioner were conducted and tested by Enthalpy difference lab under the same experimental conditions. When the indoor temperature of Enthalpy difference lab was 27℃, the outdoor temperature of Enthalpy difference lab increased from 29℃to 41 ℃ by the temper- ature gradient 3℃. The tested air - conditioner was run at the same setting point temperature. The experimental results showed that the cooling capacity of constant - speed air - conditioner was reduced from 1.64% to 2.2% ; similarly, the cooling capacity of variable - speed air - conditioner was reduced from 1.3% to 1.87%. The input power of constant - speed air - conditioner was increased from 2.55% to 4.34% ; similarly, the input power of variable - speed air - conditioner was reduced from 4.16% to 7.74%. The outdoor temperature of Enthalpy difference lab had a significant influence on the input power of air conditioner. The time when the power consumptions of constant - speed air - conditioner and variable - speed air - conditioner were same was delay by 38.3%. The variable - speed air - conditioner needed more time to reflect the advantage of energy saving.
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