Steam Control System for AHU Hot Water System 1

[Mosarof]

Hi Guys ,

Need help with one of my ongoing project . We will use Steam from Boiler to Produce Hot Water for AHU via PHE

Steam Source is from Gas Fired Boiler .

Steam Capacity : 3000 Kg/hr
Operating Pressure : 8 bar
Steam Temperature : 180 Deg C .

This steam will be used in AHU Water Heating . We will use a Plate Heat Exchanger . One side will be steam Inlet/Condensate Drain the other side will be Hot Water In/Out from AHU .

Steam Inlet Spec of PHE are as follows

Steam In : 1800 Kg/Hr
Operating Pressure : 2 bar
Steam Temperature : 130 Deg C .

Now we are looking for a Steam Control System which will maintain the demand of PHE . Please note that at present Boiler Steam is supplied for PHE Only . In the future there may be other applications . We are planning to use a PRS . But what will happen if there is excessive flow of steam in the PRS? I mean how can I ensure necessary Supply to PHE & maintain the safety as well .

 

[TBP]

Companies like Spence, Spirax-Sarco and a number of others make temperature control valves for applications exactly like this. The control valve is installed in the steam line, and the sensing element for the valve is installed in the outlet of the water side of the HX. As well, these companies can recommend the correct style and size of pressure reducing valves and associated safety valve, the most suitable type and size of steam trap. Save yourself a lot of future grief, and spend a little money on pressure gauges and thermometers on the inlet and outlet of the water side of the HX. A little basic instrumentation makes troubleshooting SO much easier.

And - very important - do not forget to install a pressure relief valve on the water side of the HX.

Find a copy of Spirax-Sarco's "Hook-Ups - The Design Of Fluid Systems". I've used it for steam systems like this for 40 years, and it's never let me down.

 

[Mosarof]

@TBP

Thanks. I will look into the same.

 

[pierreick]

Hi,
As suggested by TBP:

https://content.spiraxsarco.com/-/m...-us.ashx?rev=968dba73f1b04caba55a33a3b02ba28c

Good luck
Pierre

 

[Mosarof]

@pierreick

Thank you