Sperry Low Temperature Geothermal Conversion System, Phase I and Phase II. Volume V. Component development. Final report
The fundamental inventions which motivate this program are system concepts centered on a novel heat engine cycle and the use of downwell heat exchange. Here, the primary emphasis is on downwell hardware. The only surface equipment included is the surface portion of the instrumentation and control systems. Downwell instrumentation is reported. Downwell conduits and techniques for installing, connecting and sealing them are covered. The downwell turbine-pump unit (TPU) is a critical component since it is relatively inaccessible and operates in a hostile environment. Its development is reported. The TPU for the gravity-head system requires a different type of turbine because of the large flow-rate through it and the small pressure difference across it. The design study for a Francis turbine to meet these requirements is reported. A feature of these systems is use of a downwell heat exchanger. There were extensive studies of tube-bundle configuration, tube-sheet seals, structural integrity, and flow and heat transfer, as well as the research on welded connections and sliding elastomeric seals. Another innovative component in these systems is the enthalpy recovery unit (ERU). This direct-contact heat exchanger compensates for under-cooling in the condenser and superheat in the main turbine exhaust.
- Research Organization:
- Sperry Research Center, Sudbury, MA (USA)
- DOE Contract Number:
- AC03-78ET27125; AC03-79ET27131
- OSTI ID:
- 5043384
- Report Number(s):
- DOE/ET/27125-T2-Vol.5; SRC-CR-81-75-Vol.5; ON: DE84008040
- Resource Relation:
- Other Information: Paper copy only, copy does not permit microfiche production
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
GEOTHERMAL ENERGY CONVERSION
CONTROL SYSTEMS
HEAT EXCHANGERS
MEASURING INSTRUMENTS
DIRECT CONTACT HEAT EXCHANGERS
HEAT ENGINES
HEAT RECOVERY EQUIPMENT
INSTALLATION
MWD SYSTEMS
PUMPS
SEALS
TESTING
TURBINES
WELDED JOINTS
CONVERSION
ENERGY CONVERSION
ENGINES
EQUIPMENT
JOINTS
MACHINERY
TURBOMACHINERY
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