Heat and mass transfer in vertical tubular bubble absorbers for ammonia-water absorption refrigeration systems

Experimental study of an ammonia–water bubble absorber using a plate heat exchanger for absorption refrigeration machines

“…It was not possible to use the conventional log mean temperature (6) in some experiments, because the outlet cooling water temperature was higher than the inlet solution temperature due to the heat of absorption and the subcooling of the solution entering the absorber. In this case the logarithmic mean temperature difference (∆T ML,EQ ) defined by equation (7) was used to represent the heat transfer between solution and cooling water, in which the inlet and outlet solution temperatures are calculated at equilibrium conditions [12], eliminating subcooling conditions. )…”

Liquid-side mass transfer characteristics in mesoscale slug flow absorbers

“…For example, the unit cell length L UC , appearing commonly in Eqs. (1), (3) and (4), is known to depend on the geometry of an injection device which is different in experimental setups. Necessary flow characteristics including L UC were measured in the second campaign.…”

Heat and mass transfer during absorption of ammonia vapour by LiNO3–NH3 solution droplets

“…Solution and vapour properties in the low-pressure absorber and high-pressure absorber appear in Tables 1 and 2. These properties are taken from Infante Ferreira [10,49], ASHRAE [50], IIAR [51] and Kusaka [52].…”

“…These methods include spray and bubble absorption. For theoretical and experimental studies about spray and bubble absorption the works [1][2][3][4][5][6][7][8] and [9][10][11][12][13][14][15][16] can be consulted, respectively.…”