Search results for query: *

Dear all, I have a case where the cooling tower location is 15m lower than then PHE unit it is connected to. The issue is during the filling or when the pump power off, all the water at higher level area will flow back into the cooling tower. Do I need to add check valve to prevent water flow...

what is wrong with open tank? it is used to top up water in case there is space or air in the system

I dont know how to quote, but thank you littleinch.

here is the pump curve

yes. need to know the pressure to decide on the valve pressure ratings. either use 16 bar rating or 25 bar rating. I am thinking to use 25 bar rating for the first 8 floor and the rest can use 16 bar rating. regarding the pump in parallel, the head and the flow will increase (I think)...

here is the drawings https://files.engineering.com/getfile.aspx?folder=dd02241a-0862-416d-93d2-3eecda935c0d&file=chiller.jpg I combine it to make it for the space. on the right is the pump room located on the first floor. the pipes goes up, up to roof top where the expansion tank is located...

It is open tank so not much pressure is added. it is only by gravity.

thanks for the answers The chiller plant is located on the other building. so the chiller and the pumps are in the lowest level. Expansion tank is located on the roof of the building. the height is already included in the 110 height. sorry about C. it is just a guess. best answer is to...

Hi all, I am a new engineer, just started to work. I have a debate regarding the pressure in the chiller closed loop system. So here is the case: 1. Building height is 110m, as in the vertical pipe height 2. We are using 3 pumps in parallel (2 running and 1 backup) with each pump has 40m head...