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Hi all, We are using a recycling plant to recycle plastic bags (LDPE) These bags were used to store and transport H2SO4. While transportation H2SO4 fell from the containers and dried on LDPE bags. We washed those bags but even then some particals remained stick there, which we considered as...

Hi All, This is not a technical question, but I thought it is worth to ask for.... I am a mechanical engineer, basically an HVAC and plumbing designer for building services.. I just wanted to ask a question, HOW CAN I DO SOMETHING FOR HUMANITY USING MY FIELD(i.e. mechanical design engineer for...

Test pressure is usually 1.5 times the design pressure for minimum 1 day

1. provide supply cfms as per the load calculation and provide door louvers so that they can come out from them into other space where you can provide return for all of them, 2. Discuse with the architect and propose perforated ceiling then you will not require any return diffusers, or if it is...

what is the resulting parameters you want?

no need of any box, if it is office space, void area in the ceiling will act as your return plenum. its fine and in practice. for air flow balancing - you can do it with the dampers in supply duct

I will go with the clevis support,, thanks ZDR1985.

Kindly also suggest if - Clevis hanger can accommodate for the expansion of 1 inch in whole piping of 3000 inch(250 ft)?

Kindly check the calculation, regarding details of hangers and support what should i do?

Dear All, I have an HVAC system of 300TR Chiller with 2 pumps(1duty and Stand by, the structure to cool is a steel structure ( a typiccal Laundry Firm) in which i have to hang the duct and piping, I am new to this type of supporting can any one help me out, please refer me to some supporting...

Dear All, We have designed a chilled water system and we have used Double regulating valves in this system now the client is requiring selection calculations of DRVs. I need to perform DRV selection calculations, can use this formula Kv = Flow Rate (m3/h) / Δ P (Bar) , If yes how can i...

Does spliter damper required for ducts of P3 - Pre insulated ducts - our contractor is saying he has not installed any spliter damper on P3 ducts? If not is there any code permitting this thing? Does Acoustic insulation required on P3 ducts? P3 ducts are pre-insulated duct.

Dear All, I want to recycle waste plastic bags but before recycling we have to wash the bags so that margarine can be removed from the bags, i have tried to wash it with detergents but there is problem of stickiness in the recycled chips. can any one guide any formula of chemical?? which can be...

Dear Experts, We have a CAN fertilizer company in our city, whose plant temperature rises to about 70Deg C due high temperatures of steam lines and high temperature product output,which is not suitable for workers Company officials want to have a proper HVAC system But, Should we go for an...

Dear all, We are installing an HVAC system, recommended valves are of PN16 rating but there is no recommendation for flanges, now we are installing piping network - we are installing PN16 valves but we want to install flanges of PN10 is it alright?? Regards,

Depends

no need to vent the tank. you can put automatic air vents in chilled water supply line

yes keep it simple as chasbean1 has told, save cost

Cry22 is right. But Manu68 if you are not going for any competition you dont have to bother it just ask the contractor to do air water balancing and get those reports they will help you out for managing your system if you are using building management system then hire any CxA.

check the local codes, Now a days sealed pack windows/door are designed in a building which must have mechanical ventilation system or simply HVAC with in them. a sealed pack building with out HVAC system always flops