The VAC system consists of the chiller, the glycol chiller and the ice storage tank.              The chiller produces chilled water for nighttime air conditioning. The glycol chiller precools the glycol solution, which passes through the ice storage tank, to supply daytime air conditioning.  Variable Air Volume (VAV) boxes per floor.  Individual control provides ability to vary temperature and wind speed. Separate 24-hour chilled water supply for computer rooms provided upon request.           To ensure the optimum working environment, the design of the VAV system is based on the standards of other world class architectures, the local weather patterns and future operating strategies.