HFC冷媒と[Bmim][Tf2N]イオン液体を用いた冷凍サイクルの吸収再生速度の基礎評価

抄録

In order to develop the absorption hybrid refrigerator cycle with HFC-134a refrigerant, we evaluated the absorption and desorption rate with following liquid film type absorber. We selected HFC-134a refrigerant and [Bmim][Tf2N] ionic liquid as absorbent pair. We designed the experimental apparatus by volumetric method, and evaluated the effect of temperature and pressure conditions in hybrid refrigerator cycle on absorption and desorption rate. From the experimental results, the values of absorption and desorption rates in hybrid cycle operation conditions are 2.5 times higher than these of conventional absorption cycle. The values of absorption and desorption rates are exponentially increased as the difference of absorbent weight concentration in cycle operation conditions are increased. The experimental results revealed that the desorption rate was higher than absorption rate in same absorbent weight concentration conditions. In fact, the value of desorption rates are 1.3 times higher than that of absorption rates in some different absorbent weight concentration conditions. Thus, it is possible that the regenerator is compact design compared with absorber for upscaling.