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Direct pumping significantly reduces the first cost of a thermal storage system. Hydraulic turbines, by recovering static pressure to supplement pumping energy, extend the application of direct pumping to high-rise buildings. The purpose of this paper is threefold:

1. To review the advantages of using direct pumping in thermal storage systems.

2. To examine the economics of using hydraulic turbines to recover the static pressure within a direct pumping system, primarily for high-rise applications.

3. To provide practical guidelines and suggestions for designing and installing direct pumping systems that use hydraulic turbines.

Units: I-P

Citation: Symposium, ASHRAE Transactions, 1988, vol. 94, pt. 1, Dallas, TX