Helical expansion condenser

Details Helical expansion condenser Helical expansion condenser

1972-01-24

1977-07-19

Davis, Jr., Albert W.

Heat exchange

Intermediate fluent heat exchange material receiving and...

Liquid fluent heat exchange material

62 3, 60692, 165125, 165110, 165133, 165179, 165181, F28B 106, F28D 1500

Patent

active

040362906

ABSTRACT:
The helical expansion condenser is essentially a special heat exchange unit specifically designed for closed cycle vapor turbine systems.
The helical expansion condenser, or (HEC), consists of multiple continuous turns or coils of elliptical tubing or built-up metal sheets of elliptical cross-section, which are arranged in a uniform helix.
The generally flat elliptical cross-section provides for efficient airflow and heat transfer over the entire surface area of the coils. The airflow over the HEC is provided by vehicular air intake with a large central fan forcing air over forward and aft coils uniformly. Multiple heat pipes are the primary cooling device added to the HEC coils, for a total heat transfer coefficient of 40, approximately.
Microfinning of the sheet metal ducts accounts for some of the improved cooling effectiveness.

REFERENCES:
patent: 1750750 (1930-03-01), Gay
patent: 1791528 (1931-02-01), Hull
patent: 2488549 (1949-11-01), MacCracken

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