Numerical simulation of the FVU sorption-compression heat pump

摘要

The adsorption-compression cycle developed at FVU has been simulated using the program ABS from ORNL. Computational results are in fair agreement with experimental data. The parametric study did not reveal any extrema in COP or capacity. However, the results showed that these are sensitive to the pressure difference between absorber and desorber. Throttling the flow of solution returning to the desorber is an effective control of capacity, as was also found experimentally. The FVU cycle is actually a GAX cycle as part of the phase changes takes place in the recuperator: expanding its surface area could lead to increased temperature lifts.