Dear Sirs,
Calculating a circulation pump head in a pressurized closed loop for the below scenario.
Attached a simple schematic.
A booster having more head (up to 6 bar) and low volume flow, pressurizes a tank and maintains the pressure in the closed loop, supply and return.
Circulation pump...
Hi,
We are using hdpe pipes for chilled water. When i tried to use 3Eplus Naima software for calculating insulation, there is no option available for HDPE.
There are 4 options for "Base metal"
Stainless Steel, Steel, Copper, PVC.
How to proceed further , please let me know.
I would like to...
Hi All,
We are planning to replace PNG fired burners with induction stoves. Some burners of type T70.
What is the criteria for one to one replacement of a PNG fired burner with an induction stove ?
Do i need to find the BTU output of T70 burner and then equate that BTU to an induction stove...
Hi ,
Bit confused with a simple calculation. Recently done an induction stove testing.
It is an 12 kW induction stove. Have set it to 10 kW. heats 30 liters of water from 28 degree celsius to 90 degree celsius in 25 minutes.
Wanted to calculate the system efficiency.
Q = 30 kg * 4184 J/kg·K...
Dear All,
I would like to calculate heat loss of hot water stored in an SS 304 tank
Water temperature 90 C
Dia of tank 2100 mm
Height 3100
shell Thickness 5 mm
rockwool insulation 100 mm
K 0.036 W/m-k
SS 304 K value 16.2 W/m-k (this is at 100 C. I don't know K value at 90 C)
combined K 0.036...
Dear Sirs,
I have a basic query. Though searched in web and talking to many professionals, I do have some doubts.
It's all about regeneration process.
One case study:
raw water hardness 375 ppm
Target hardness 100 ppm (user requirement)
inflow 200,000 liters
Resin capacity...
Dear Sirs,
I would like to know the sizing of brine tank for a 900 liter resin softener.
Resin capacity 900 liters
Water hardness 250 ppm
Salt exchange capacity 55
With this system 200,000 liters can be softened. (correct me if iam wrong) (900*55*1000/255 gives 200,000 liters)
Salt required is...
Dear All,
I have a hot air ducting requirement for a Diesel Generator radiator side.
It was a 2003 year model with open room working condition.
The DG set is acoustically enclosed recently.
The site has space constraints at the radiator side. The space available in front of radiator is only 1...
thread403-313172
Dear Sirs,
The above thread exactly describes my situation. Thanks to Eng-tips.
Recently the diesel generator (Kohler 330 P5) is enclosed in acoustic box and intense heat is being generated inside acoustic. We are planning radiator side cooling through duct and want to know...
Dear All,
We have installed a brand new water softener with two units each of 1000 liters resin capacity.
Our hardness of water is 250 ppm. So for a 50 ppm outlet hardness we expect the OBR need to be at least 2,00,000 liters for each unit.
After filling brine (150 kg each unit) and after a...
Dear All,
We have a 360 kVA Kohler DG for which there was no sound proof enclosure.
Recently we are forced by our neighbours to have acoustic enclosure.
Have come across some specs and would like to know some more details
one supplier says his nrc fabric and panels are superior to rockwool...
Respected members,
One of my friend shared a document for determining minimum shell thickness required for hot water (90 deg C) storage tank.
There are two methods, one is CODRES and the other is API 650 method. API method looks simple to me.
We require 20,000 liters capacity hot water storage...
Respected Members,
I would like to know the best practices of metering a water softener and widening capacity of brine tank. Our requirement of water is throughout the day and is about 2,00,000 liters. Timer may not workout since because of the arbitrary usage of water quantities in a typical...
Respected Members,
I would like to know how ClO2 is effective as a disinfectant against E Coli.
My client don't want to use Hypo Chlorite as they recently aware that this may cause DBPs which may be carcinogenic.
I have found this reference that ClO2 that it may not be effective against...
Respected members,
I was referring the below website for designing lightening arrester design required for a structure.
The typical figures mentioned about the structure i.e. height 23 meters, length 60 meters, width 28 meters almost matches our data.
Lightning protection system design
The...
Respected members,
I would like to know some technical details on granite/ stone look finish.
One reference here:
Link
This company don't supply outside USA. So to procure locally and to explain vendors I would like to know some technical specifications.
Kindly help me.
Regards,
Respected members,
I have this query regarding improving flow of water in an agricultural fields setup.
Current system is:
Pipe length: 700 m
Pipe dia: 2.5"
Pump: 10 HP
Can the setup be changed like this below?
Pipe length: remain same (700 m)
Pipe dia: 4"
2 Pumps of 10 HP
What factors will...
Dear members,
I am just trying to understand water chemistry.
Excuse me if my queries are too simple.
I am trying to calculate water saturation pH (CaCo3).
We have different water sources approx. daily 15 tankers filling up the sump per day.
Have individual test reports for all these 15...
Dear All,
Would like to know hot water tank specifications for a 20,000 liters tanks (hot water at 90 degree celsius).
What are the factors which decides thickness, working pressure etc.,
Dear All,
Because of space constraints, we are planning to construct an etp in a silo style. The anaerobic tanks will be under ground and the rest of tanks like equalization, treated water tanks above the anaerobic tanks.
Could please guide me to any best practices available.
Thanks,
