RE: A question

In continuation to the Steam trap problem,

Q1 If there is a modulated temperature control valve in the steam supply to the heat exchanger, which endeavours to throttle the steam pressure to less than the prevailing back pressure, resulting in the steam space becoming flooded with condensate (Stall), how do we decide on the steam trap? I mean, we can use a check valve and all, but in the final analysis, how do we narrow down on a particular model in a series of Steam Traps available? Since the trap is to be selected using the diffrential pressure and the sizing load, what is the diffrential pressure to be considered? ( There may be some cases when we might have to throttle steam, because of the process requirements)

Q2 Suppose after considering many other factors, we narrow down on three to four models of a particular brand of Steam trap suppliers. Now, all of them are offering a maximum capacity at that Diffrential pressure which is higher than the actual capacity. How do we chose from amongst them, in order to assure proper functioning of the Steam trap? (Let us assume that we require a capacity of 600 lb/hr of condensate at 100 psi, but the models are offering a maximum capacity of 2000 lb/hr , 3400 lb/hr and 5000 lb/hr at the same diffrential pressure, will they work satisfactorily- and if so, do we select the lowest capacity one?)

Varun Pant Received on Fri Jun 08 00:42:00 2001