HEAT TRANSFER PIPE FOR FIN AND TUBE TYPE HEAT EXCHANGER AND FIN AND TUBE TYPE HEAT EXCHANGER USING SAME

HEAT TRANSFER PIPE FOR FIN AND TUBE TYPE HEAT EXCHANGER AND FIN AND TUBE TYPE HEAT EXCHANGER USING SAME

To provide a heat transfer pipe for a fin and tube type heat exchanger with which the heat transfer rate on the coolant side can be effectively improved and a fin and tube type heat exchanger using the same. Triangular holes (20) are formed in flat multiple hole pipes (14) made of aluminium or an al...

Ausführliche Beschreibung

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Bibliographische Detailangaben
1. Verfasser: KAKIYAMA SHIRO
Format: Patent
Sprache:eng
Schlagworte:
BLASTING
COMBINED HEATING AND REFRIGERATION SYSTEMS
DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OFGENERAL APPLICATION
HEAT EXCHANGE IN GENERAL
HEAT PUMP SYSTEMS
HEATING
LIGHTING
LIQUEFACTION SOLIDIFICATION OF GASES
MANUFACTURE OR STORAGE OF ICE
MECHANICAL ENGINEERING
REFRIGERATION MACHINES, PLANTS OR SYSTEMS
REFRIGERATION OR COOLING
WEAPONS
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Beschreibung
Zusammenfassung:To provide a heat transfer pipe for a fin and tube type heat exchanger with which the heat transfer rate on the coolant side can be effectively improved and a fin and tube type heat exchanger using the same. Triangular holes (20) are formed in flat multiple hole pipes (14) made of aluminium or an alloy thereof so as to give a ratio (D/h) in the region of 0.40 to 0.80 where (D) is the hydraulic diameter defined by dividing four times the cross sectional area of the hole by the sum of the length of the sides of the hole and (h) is the height of the hole; and said flat multiple hole pipes (14) and fins (12) made of aluminium or an alloy thereof are assembled to form a fin and tube type heat exchanger (10).