共查询到12条相似文献,搜索用时 62 毫秒
1.
本文分析了极化冷冻机油添加剂(PROA)的节能机理,讨论了目前对极化冷冻机油添加剂研究中存在的一些争议。并结合工程实例对实际运行的冷水机组进行了现场测试,对添加前后系统的性能和能耗进行了比较分析。结果表明,极化冷冻机油添加剂节能效果并不显著。 相似文献
2.
分析了螺杆式制冷机回油方法的缺陷,提出了利用平衡油泵进出口压力和平衡蒸发器与油泵及其进口管路温度的改进方法。实践证明改进方法回油效果良好。 相似文献
3.
4.
5.
6.
研究了空调制冷系统制冷剂泄漏的故障特征,分析了制冷剂泄漏引发的流量和压力参数变化情况,提出了以制冷机正常运行时与泄漏运行时的压力参数检测值作为分类人工神经网络的输入矩阵,得到了能对制冷系统运行状态进行分类的神经网络模型,它能诊断和预报泄漏故障的发生。 相似文献
7.
介绍了机房专用空调常用的两种快速除湿方法—“降风量法”和“降蒸发面积法,”并通过理论计算分析和对实际机组进行试验,详细地比较了这两种方法快速除湿时的制冷量和除湿量的差异,根据前面试验结果具体地指出了两种方法在实际快速除湿应用时的优点和缺陷。最终认为“降风量法”在各种性能方面都具有优选性,而“降蒸发面积法”应用时一定要注意蒸发器夹角以及冷凝水管管径大小的控制。 相似文献
8.
中汇大厦空调制冷设备装机容量及运行调查 总被引:3,自引:1,他引:3
通过对一个工程实例的调查,说明了目前工程设计中普遍存在空调制冷设备装机容量过大以及由此引起的各种问题,并探讨了造成这类问题的原因及相应的预防措施。 相似文献
9.
10.
11.
12.
The application of nano-fluids in refrigerating systems is considered to be a potential way to improve the energy efficiency and reliability of HVAC&R facilities and to make economic the use of environment-friendly refrigerants. In this paper, we report a method that uses nanoparticles to enhance the energy efficiency of retrofitted residential air conditioners (RAC) employing HFCs as alternative refrigerants. The reliability and performance of RAC with nanoparticles in the working fluid have been investigated experimentally. A new mineral-based nano-refrigeration oil (MNRO), formed by blending some nanoparticles (NiFe2O4) into naphthene based oil B32, was employed in the RAC using R410a as refrigerant. A method showing how to disperse the NiFe2O4 nanoparticles in the mineral oil refrigeration lubricants is presented together with an investigation of their stability. The solubilities of the new MNRO in R134a, R407C, R410a and R425a were measured. The performances of the RAC, such as the cooling/heating capacity, the power input and the energy efficiency ratio, were determined. The results indicate that the mixture of R410a/MNRO works normally in the RAC. The cooling/heating EER of the RAC increased about 6% by replacing the Polyol-Easter oil VG 32 lubricant with MNRO. 相似文献