Study on absorption heat pump using hydrophobic membrane

对溴化锂溶液吸收水蒸气的传热传质过程进行了实验研究。将泡沫金属附着在冷却壁面上，吸收液在泡沫金属中流动。金属模板覆盖有疏水膜，蒸汽通过该疏水膜被吸收到吸收性液体中。作为传热的基础，在金属的形式，液体单相强制对流，冷凝和蒸发的传热系数进行了测量。测量了蒸汽通过膜的压力损失，并与理论值进行了比较。阐明了膜对水蒸气吸收进液的影响。

Heat and mass transfer in water vapor absorption into LiBr/water solution has been investigated experimentally. Metal foam was attached on the cooling wall, and the absorbent liquid flows in the metal foam. The metal form was covered with a hydrophobic membrane, through which the vapor was absorbed into the absorbent liquid. As a basis of heat transfer in the metal form, heat transfer coefficients were measured for liquid single-phase forced convection, condensation and evaporation. The pressure loss of vapor passing through the membrane was measured and compared with theoretical value. The effect of membrane on the vapor absorption into liquid was clarified.