Non-absorbable gas effect on the wavy film absorption process
Book
·
OSTI ID:170394
- National Sun Yat-Sen Univ., Kaohsiung (Taiwan, Province of China). Inst. of Mechanical Engineering
As the performance of the absorber determines the COP of the absorption chiller, it is important to study the heat and mass transfer characteristics for the absorber. This paper deals with the heat and mass transfer characteristics for a falling film type of absorber when non-absorbable gas (air) is present in the gas side. Since the presence of air is detrimental to the mass absorption rate, it is desired to understand its effect on the performance of the absorber for design purposes. The study is based on a mathematical model which describes the heat and mass transport for the absorption process taking place in a falling wavy film flow. The solutions are compared with the results of smooth film absorption as well as the results of wavy film absorption without the presence of non-absorbables. It is shown that waves enhance the absorption rates while the non-absorbables depress the absorption rates significantly. The present solution is found to be in good agreement with previous experimental results. The correlations for heat and mass transfer coefficients are also given.
- OSTI ID:
- 170394
- Report Number(s):
- CONF-950729--
- Country of Publication:
- United States
- Language:
- English
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