Evaporation heat transfer performance of nozzle-sprayed ammonia on a horizontal tube

Xin Zeng, Ming C. Chyu, Z. H. Ayub

Research output: Contribution to journalConference articlepeer-review

44 Scopus citations


A spray evaporation experiment was conducted using commercial nozzles distributing liquid ammonia on a horizontal, plain stainless steel tube with a 3/4-in. diameter. The average local spray flow rate was measured, and varied from 0.0138 to 0.0777 kg/(s·m). The saturation temperature was tested from -23.3°C to 10°C, and the heat flux was tested from 8 to 60 kW/m2. The effects of heat flux, saturation temperature, spray flow rate, and nozzle height were investigated. Both standard-angle and wide-angle commercial nozzles were tested. The results are compared with pool boiling data obtained in the present experiment and previously published pool boiling and spray evaporation results.

Original languageEnglish
Pages (from-to)136-149
Number of pages14
JournalASHRAE Transactions
Issue number1
StatePublished - 1995
EventProceedings of the 1995 ASHRAE Annual Meeting - Chicago, IL, USA
Duration: Jan 29 1995Feb 1 1995


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