In 1998 two new technologies were demonstrated for the first time in a commercial building: a new ICPC solar collector and the solar operation of a double effect (2E) chiller. The demonstration project in Sacramento has now been in operation for almost five years. Daily collection efficiencies of over 50 percent, instantaneous collection efficiencies of over 60 percent and daily chiller COPs of about 1.1 have been achieved.

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