论文部分内容阅读
以单位质量制冷量总能耗为目标函数,分析了冷冻水冷量梯级利用新技术的能耗与运用场合。结果表明:与常规7℃/12℃工况相比,新技术冷冻水泵和冷水机组能耗均降低,其温差由6℃增加到11℃时,总功耗相应下降0.77%至2.26%。与常规大温差空调冷冻水系统要求扬程大于31.7米和冷冻水供回水温差不宜超过9.2℃不同,新技术在任何冷冻水泵扬程下均节能;越是高层或大型建筑,节能效果越明显,新技术系统供回水温差越大,其总能耗越小。
Taking the total energy consumption per unit mass of cooling capacity as the objective function, the energy consumption and application of the new technology for cascade utilization of chilled water cooling capacity are analyzed. The results show that compared with the conventional 7 ℃ / 12 ℃ condition, the energy consumption of the new technology chilled water pump and water chiller decreases. When the temperature difference increases from 6 ℃ to 11 ℃, the total power consumption decreases by 0.77% to 2.26%. Compared with the conventional large temperature difference air-conditioning chilled water system, the lift needs to be greater than 31.7 meters and the temperature difference between the chilled water supply and return water should not exceed 9.2 degrees Celsius. The new technology saves energy in the head of any chilled water pump; Technical system, the greater the temperature difference between supply and return, the smaller the total energy consumption.