Dear all
I faced 15hp two piston refrigeration compressor with failed unloader solenoid. It seams clear that when the unloader valve remain closed before motor startup, the starting current and torque remain high. And failed open before start up, perhaps no cooling. But I want know what will...
Dear all,
I have been told that iron mesh with visible pore size is used to separate (keep apart) sodium and chlorine from contacting each other but allows both ions. But i want to know the mechanism it work
Dear all,
I have refrigeration system where the evaporator is copper tube in a bath. Now I need to use salt-water solution to refrigerate another storage place a bit below 0 degree Celsius may be -1 degree Celsius. I am planning to immerse the copper evaporator in salt water and circulate this...
Dear all,
I am building ice maker. I have passed many of the challenges I faced, but now is another challenge i am facing. And i will ask you if the solution that i am thinking might work
the problem is:- i cant get compressor(hermetic piston type) with enough HP like 3-5Hp for ice making but...
Dear all,
I am building an ice machine with copper tubes which are chrome plated but i am afraid of the duration of the chrome plate (i have faced similar plating failure). So i want to know health risk associated with copper being used in wet situation without chrome plate.
also i have...
Dear all,
I need to place a pump far from its suction tip (river) and close to electric supply such that cost of electric cable reduce.
so i am planning to place the pump far from the river but at lower elevation
what kind of possible problem may i face
Dear all
I have seen that caustic soda react and convert oil to soap, also in edible oil production line caustic soda is used to convert the free fatty acid to soap. My question is how do we control the lye used only attack the free fatty acid not the oil (if it is based on temperature then...
Dear all,
I was preparing metal sheet product using galvanized sheet but clients want it to be a material that has a color of some how rainbow (material appearance attached). When i search the web it appear to be anodized steel (i guess).
so please help me if the attached material is really...
Dear All,
I have a project involving casting aluminum block where copper tubes are embedded. Unfortunately i found in the internet that liquid aluminum dissolve copper. My aluminum block is 30cmx30cmx6.5cm and Refrigerator copper 12mm OD. But again in the internet discussion i found some one...
Dear all why do concentrated caustic soda solution have floating solid parts. i have taught that since the solution is saturated some solute comes out of the solution but the question is why to solute float instead of precipitate downwards
Dear all after i search and discussed another way of producing caustic soda and chlorine from salt, i am back to ion exchange membrane method. so i need your usual cooperation please.
i need to build the membrane cell so the first question will be can i use bare titanium and nickel metal for...
Dear all
I want your suggestion on the following method of chlor-alkin production as shown on the attached picture. Imagine a pump pushing brine through a pipe to a high velocity and transverse intense magnetic field to the pipe. according to Faraday's law:- moving ions in the presence of...
Hi guys i really want to know why melting sodium chloride (downs cells process) is not selected over brine electrolysis for chlor-alkin production.
to make my confusion more clear let me make qualitative energy consumption for both operation
1. downs cell (melting salt):- in this operation...
Dear all i would like to know the production cost of caustic soda and HCl using either Downs cell or membrane cell.
currently i am searching about this topic and what i found is to produce caustic soda and the other there are three types of technology mercury, asbestos and membrane but i dont...
Hi guys, i want to plate zinc on iron (functional plate). i have used zinc sulphate solution and the part to be plated and graphite rod. as a brightener i used sugar. but the result i got is not as bright as i expected.
any help please
