Performance of a condensing copper finned tube heat exchanger; Effects of baffles

Conference · Sun Jan 01 04:00:00 EST 1989 · ASHRAE Transactions (American Society of Heating, Refrigerating and Air-Conditioning Engineers); (USA)

OSTI ID:5864770

Idem, S A ^[1]; Goldschmidt, V W ^[2]

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1. Tennessee Technological Univ., Cookeville, TN (US)
2. Ray W. Herrick Lab., School of Mechanical Engineering, Purdue Univ., West Lafayette, IN (US)

The effects of external baffles on heat and mass transfer to an air-to-water copper finned-tube, two-pass coil was operated over a Reynolds number (based on hydraulic diameter and maximum core velocity) range from 400 to 1500. A method of correlating condensation mass transfer data, based on the saturation enthalpy at the water temperature, is reviewed. Convective heat and mass transfer coefficients are presented as plots of Colburn j-factor vs. Reynolds number. The presence of baffles is found to augment the transfer coefficients over the range of Reynolds numbers, the effects becoming greater at higher flow rates. Only one type of heat exchanger is considered.

• OSTI ID: 5864770
• Report Number(s): CONF-890609--
• Conference Information: Journal Name: ASHRAE Transactions (American Society of Heating, Refrigerating and Air-Conditioning Engineers); (USA) Journal Volume: 95, Part 2
• Country of Publication: United States
• Language: English

Related Subjects

32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
320106* -- Energy Conservation
Consumption
& Utilization-- Building Equipment-- (1987-)
COPPER
EFFICIENCY
ELEMENTS
EVAPORATION
HEAT EXCHANGERS
METALS
PHASE TRANSFORMATIONS
REYNOLDS NUMBER
THERMAL EFFICIENCY
TRANSITION ELEMENTS
TUBES