EP 0591094 A1 19940406 - Internally ribbed heat transfer tube.
Title (en)
Internally ribbed heat transfer tube.
Title (de)
Wärmeübertragungsrohr im Innenrippen.
Title (fr)
Tube de transfert thermique cannelé vers l'intérieur.
Publication
Application
Priority
US 95613992 A 19921002
Abstract (en)
The heat transfer tube (10) has internal ribs (14) to enhance the heat transfer performance of the tube (10). The ribs (14) may be substantially triangular or substantially rectangular in cross section but have specific ranges of values for critical parameters of the ribs. In a preferred embodiment, the ribs (14) are equally distributed around the inner circumference of the tube (10) and the tube (10) is made of a copper or copper alloy. <IMAGE>
IPC 1-7
IPC 8 full level
F28F 1/40 (2006.01)
CPC (source: EP KR)
F28F 1/40 (2013.01 - EP KR)
Citation (search report)
- [X] EP 0148609 A2 19850717 - HITACHI CABLE [JP]
- [X] DE 2552679 A1 19760616 - HITACHI LTD
- [X] DE 2828094 A1 19790118 - CARRIER CORP
Designated contracting state (EPC)
DE ES FR IT
DOCDB simple family (publication)
EP 0591094 A1 19940406; BR 9303895 A 19940419; CN 1087162 A 19940525; JP H06201286 A 19940719; KR 940009564 A 19940520; MX 9305803 A 19940630
DOCDB simple family (application)
EP 93630072 A 19930930; BR 9303895 A 19930924; CN 93118363 A 19930930; JP 24228693 A 19930929; KR 930020092 A 19930928; MX 9305803 A 19930922