Heat exchanger array for a step down return of condensate
This patent describes a heat exchanger array for step down return of condensate in a vapor system having a vaporizer and vapor services of different temperature and pressure having condensate reservoirs of relatively higher and lower pressures and temperatures. The array comprises: straight tube heat exchangers each of which comprises a straight outer tubular shell with an inside wall, having a fluid inlet and a communicating fluid outlet, and, an inner conduit assembly with fluid inlet and a communicating outlet concentrically mounted within the outer tubular shell. The conduit assembly has an inner tube with an external fin structure displaced from the inside wall and a periodic baffle structure proximate to the inside wall of the tubular shell. The straight tube heat exchangers are arranged with at least one heat exchanger having an inlet connected to a reservoir of relatively higher temperature and pressure. They also have a communicating outlet connected to the inlet of at least one other heat exchanger the inlet of which is additionally connected to a condensate reservoir of relatively lower temperature and the communicating outlet of which is connected to a common return for the combined condensate. The array further has pressure control means for regulating a pressure drop between the exchangers and cooling means for cooling the condensate in the exchangers.
- Assignee:
- NOV; EDB-87-074009; NOV-87-051288
- Patent Number(s):
- US 4648355
- OSTI ID:
- 6728845
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
421000* -- Engineering-- Combustion Systems
BAFFLES
CONDENSATES
CONTROL
CONTROL EQUIPMENT
COOLING SYSTEMS
ENERGY RECOVERY
ENERGY SYSTEMS
EQUIPMENT
EVAPORATORS
FLOW REGULATORS
FLUID FLOW
FLUIDS
GASES
HEAT EXCHANGERS
HEAT RECOVERY
INTAKE STRUCTURES
MECHANICAL STRUCTURES
PRESSURE CONTROL
PRESSURE DEPENDENCE
PRESSURE DROP
RECOVERY
TEMPERATURE DEPENDENCE
VAPORS
WASTE HEAT UTILIZATION
WASTE PRODUCT UTILIZATION