GB170450A - Improvements in heat exchange apparatus - Google Patents

Abstract

170,450. McKean, J. G., and Jones, R. F. Aug. 19, 1920. Field-tube and like apparatus; straighttube apparatus.-Heat-exchange apparatus, particularly for heating liquid fuel, comprises a main heater body having longitudinal passages containing steam-pipes and arranged so that the flow is in series or partly in series and parallel through the passages and also that the flow takes place through the outer passages first and is discharged from the inner passage. The diameter of the first passage may be larger than the remainder. The steam-chests are arranged so that, on removal. the joint for the steam pipe on the chamber is not disturbed. The drain for the discharge of condensate is connected to a chamber which may be at a higher level than the main apparatus. The casing a, Fig. 2, has a number of passages b connected at the ends by passages c so arranged that the flow is in series, or that the first elements may be in parallel. Alternatively the first element may be of larger bore. An end closure plate e has a central discharge orifice f, the inlet being at d. The casing may be in two parts bolted together at g. A tubeplate h has connecting-passages for the passages b, and also carries the outer steam-heating tubes j, of the field type, the inner tube k extending to a second tube-plate l. This plate is bolted to the steam-supply chest m and forms the cover for the steam-exhaust chest o. Steam enters at n, passes through the chest m, tubes k, and tubes j, and returns to the chest o, which has a drain chamber r. The condensate passes by a pipe t, Fig. 7, to a collector s which has a gauge v, aircock y, draw off cock w and radiating fins x.