Yıldız Gökhan, Gürel Ali Etem, Cingiz Zafer, Ağbulut Ümit
Department of Electronics and Automation, Düzce Vocational School, Düzce University, Düzce, 81010, Türkiye.
Department of Electricity and Energy, Düzce Vocational School, Düzce University, Düzce, 81010, Türkiye.
Heliyon. 2024 Sep 13;10(19):e37691. doi: 10.1016/j.heliyon.2024.e37691. eCollection 2024 Oct 15.
The need for energy is rising significantly with the growth of technology in the world. This energy need is largely met by fossil fuels. The enhancement in their prices and the damage they induce to the environment, scientists have turned to alternative energy sources due to the depletion of fossil fuels. In recent years, these alternative energy sources have come to the fore as solar, wind, and wave energy. However, heating and refrigeration systems, whose share of energy consumption in buildings in the world is 40 %, can also compete with these alternative energy sources. In particular, heat pumps (HP) are at a level that can compete with renewable energy sources to seriously reduce this rate. In this study, different nanoparticles were added to the Polyol ester oil (POE) utilized in the compressor to enhance the performance of the HP. Thermodynamic, environmental, and economic performances of the obtained nanolubricants at different concentrations (0.5 wt% and 1 wt%) and flow rates (15, 30, and 45 g/s) were evaluated. The highest COP value of the HP was calculated as 4.14 at 0.5 wt% B-POE at 45 g/s. The best energy consumption in the HP was obtained with 0.5 wt% B-POE nanolubricant with a decrease of 10.96 % at 45 g/s compared to pure POE. The highest exergy efficiency in the HP was calculated at 0.5 wt% B-POE nanolubricant with a 13.53 % increase at 30 g/s compared to pure POE. The best exergoeconomic parameter ( ) performance was determined as 3.7148 kWh/$ in 1 wt% TiO-POE nanolubricant at 45 g/s. The best enviro-economic value of 0.16182 ¢/h was obtained with 0.5 wt% B-POE nanolubricant at 45 g/s. In line with the results obtained, it was observed that the B-POE nanolubricant has a performance that can compete with the good-performing TiO-POE nanolubricant.
随着全球科技的发展，能源需求显著增长。这种能源需求主要由化石燃料满足。由于化石燃料价格上涨及其对环境造成的破坏，且化石燃料日益枯竭，科学家们已转向替代能源。近年来，太阳能、风能和波浪能等替代能源备受关注。然而，供暖和制冷系统在全球建筑能源消耗中占比40%，它们也能与这些替代能源相竞争。特别是热泵（HP），其性能足以与可再生能源竞争，从而大幅降低这一能耗比例。在本研究中，向压缩机中使用的多元醇酯油（POE）添加了不同的纳米颗粒，以提高热泵的性能。对不同浓度（0.5 wt%和1 wt%）和流速（15、30和45 g/s）下所得纳米润滑剂的热力学、环境和经济性能进行了评估。在45 g/s流速下，0.5 wt%的硼化多元醇酯油（B-POE）纳米润滑剂对应的热泵最高性能系数（COP）值计算为4.14。在45 g/s流速下，0.5 wt%的B-POE纳米润滑剂使热泵能耗降至最低，与纯POE相比降低了10.96%。在30 g/s流速下，0.5 wt%的B-POE纳米润滑剂对应的热泵火用效率最高，与纯POE相比提高了13.53%。在45 g/s流速下，1 wt%的二氧化钛多元醇酯油（TiO-POE）纳米润滑剂对应的最佳火用经济参数（ ）性能确定为3.7148 kWh/$。在45 g/s流速下，0.5 wt%的B-POE纳米润滑剂对应的最佳环境经济价值为0.16182美分/小时。根据所得结果观察到，B-POE纳米润滑剂的性能可与性能良好的TiO-POE纳米润滑剂相媲美。
