Many thanks for your much valued inputs.
I had three reasons to think of air cooling. One is the messiness of drawing water inlets and outlets to the production location. Second is the wastage of water, which will be more precious than alcohol in the days to come. Third is the worst; I have developed this phobia where the moment I take a Copper worm to my hand, I see from the corner of my eye, a guy in uniforms hovering over my shoulder
(In the case of any eventuality, once dismantled, any piece of Copper tubing in the household could pass unnoticed, but not a Copper worm !!)
So it looks like I have to settle for Rad's suggestion to re-circulate water. At least it will solve the first two problems. Hopefully, the produce will cure the third, once consumed.
By the way, I chose Valved reflux design just going by Bob Lennon’s presentation aspect. After all, I didn't have much wisdom to go by, other than the comprehensiveness of the reading material.
Could you please enlighten me on more efficient or modern designs available, in your opinion?
I am still not familiar with the short-names/ nicknames for various apparatus and techniques in the trade, so any URLs or links are highly appreciated please.
Thank you once again for your support.