A japanese company has been commecially selling these chillers for the past decade. One of the major hits of the net search would throw many papers from IIT -M. But it is both unfortunate and strange that no adsorption chiller using silica gel, which is the only non polluting chiller, which can use water at almost any temperature (as low as 50 deg C)- Which is best suited for solar thermal based air conditioning.
In spite of these advantages, and the theoretical knowledge in IIT, no one has come forward to develop these chillers in India – whihch can be done at a reasonable cost. SECO has done complete anaysis, and has collected sufficient data for prototype development. The field is open.