The present invention relates to novel energy efficient
sorption processes and systems for cooling, dehumidifying and heating using multistage
liquid desiccant regenerators, or
hybrid cooling systems or adsorption cooling systems involving appropriate combinations of rotating contacting devises, adsorption modules with
heat transfer passages in
thermal contact with the adsorption module wall and switchable heat pipes. The
sorption processes of this invention help in flexible designing of compact cooling, dehumidifing, heating systems easy
operability. The adsorption module of this invention leads to lower cycle times as low as 5 minutes; makes it possible to achieve high
system Coefficient of Performance (COP) up to 0.9 due to reduced
thermal mass; offers high specific
cooling power in the range of 50 to 750 W / kg of AC; is easy to manufacture and operates at low costs. The
refrigeration cum
heating system of this invention with
heat pipe in
thermal contact with the adsorption modules increase the
heat transfer rates without increasing the
thermal mass leading to increase of COP and the single or multistage pressure equalisation increases the internal regeneration of heat thereby increasing the COP, reducing the
cycle time resulting in increased specific
cooling power (SCP), reducing the required quantity of adsorbent /
refrigerant making the module compact and cost effective.