Survey of gas-side fouling measuring devices

Abstract

A survey o f measurin6 devices o r .probes, whicti have been used t o i n v e s t i g a t e gas-side f o u l i n g , has been c a r r i e d o u t. F i v e d i f f e r e n t typ.es o f measuring d'e\iices a r e i d e n t i f i e d and discussed i n c l u d i n g : heat f 1 ux meters, mass accumul a t i o n probes, o p t i c a l devices, d e p o s i t i o n probes, and a c i d condensation probes. A t o t a l o f. 3 2 d i f f e r e n t probes a r e d e s c r i b e d i n d e t a i l and summarized i n m a t r i x o r t a b u l a * form, The i m p o r t a n t c o n s i d e r a t i o n s of combustion gas c h a r a c t e r i z a t i o n and d e p o s i t a n a l y s i s a r e a l s o g i v e n a s i g n i f i c a n t amount o f a t t e n t i o n ; The r e s u l t s o f t h i s s t u d y show t h a t c o n s i d e r a b l e work has been done i n t h e dev&lopmLnt o f gas-side f o u l i n g probes.

Simulation of microstructure/mechanism relationships in particle deposition

“…In consequence, the deposih microstructure would also change. Note also that under such (commonly encountered) conditions, it may not be correct to infer deposition rates solely from deposit thermal resistance measure-ments, e.g., deposition detectors (see, Marner and Henslee, 1984;Sum et al, 1987). since, as the deposition process continues, both the rate of deposition and the effective thermal conductivity of the deposit inevitably change.]…”