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Questions related to Heat
A simple concentric tube heat exchanger is used to cool a sauce from 70 degrees Celsius to 10 degrees Celcius. The inner tube has internal and external diameters of 50mm and 55mm respectively and...
22 April 2020 3,726 0 View
Hi everyone, I want to synthesize ammonium nitrate (NH4NO3), based on NH4OH + HNO3 → NH4NO3+H2O For this purpose, the mixture of nitric acid ( 65wt% in water) and ammonium hydroxide solution...
15 April 2020 4,015 7 View
help please .. can somebody make me udf to use as boundary condition as i don't know how to make it Analysis type: Transient Analysis Problem : cool down test for Tank which initially has water at...
26 March 2020 4,656 3 View
Hello, For example, if I have a cell(sphere) like in the attachment (see page 2). The pressure can be calculated using the formula: P= -B* (DeltaV / V initial) (according to formula found in...
24 March 2020 7,555 0 View
I'm searching for the reaction between an activated NHS ester and cyclic alcohol. The alcohol (cyclic one)should attack the ester carbon, and N-hydroxysuccinimide should be released. I have tried...
02 March 2020 6,542 1 View
I came across the RIR value of Martensite in a paper, which is 7.98. Similarly for Austenite, which is 10.81. I want to quantify Retained Austenite in my heat treated samples. I am using Reference...
27 February 2020 9,601 2 View
Flash lamp is used in this case to heat up a rectangular plate to detect defect using active thermography. How to calculate the energy input per unit area, if a flash lamp of Energy density 40...
26 February 2020 4,175 5 View
Ammonia latent heat of vaporization is 1369 KJ/kg and water is 2256 KJ/kg what will latent heat of vaporization be when you mix both at 18% ammonia concentration (Boiling point should be ~57C at...
23 February 2020 2,640 1 View
Laser specs: Yb Laser Wavelength=1070 nm Mode of operation : cw/modulated Maximum average power=400 W Modulation frequency= 0-50 kHz
20 February 2020 8,602 3 View
Hi, I am trying to model a laser melting simulation, where a solid is being heated by a laser source (refereed as a Gaussian heat source). For that, I took a domain (Grey color in the attached...
19 February 2020 3,220 4 View
I’m performing some cellular pharmacokinetics and need to separate cytosol from vescicle content in a pellet of cells treated with our compound, to determine its on-cell walk and...
18 February 2020 2,968 1 View
Dear all, I want to calculate the wall gains or heat gain from the building envelope for my building type 56 with one zone/ air node. I read "Volume 5 Multi-zone Building modeling with Type56 and...
17 February 2020 3,038 2 View
Hello, is it possible to simulate the amount of slag that is generated under certain conditions (pressure, temperature, holding time of the melt)? e.g. can i enter a chemical composition of a...
14 February 2020 1,104 3 View
I am trying to form a bismuth complex using thiosemicarbazones as ligands. Many articles I read describe the bismuth complex as a yellow precipitate orange or red but not black. I am using bismuth...
13 February 2020 1,218 2 View
i have bismuth(III) nitrate pentahydrate and 2M nitric acid. how much nitric acid in ml used to dissolve 1gram of bismuth nitrate completely
13 February 2020 5,997 4 View
During Power Range, Engine Requires Richer Mixture, for - 1. Providing the best/more power 2. Preventing the overheating of engine components, as ENRICHING THE MIXTURE REDUCES THE FLAME...
11 February 2020 7,328 7 View
Hi I'm have been looking into temperature control over atmosphere and water pool, within a 100 liter volume chamber, usually used for local adaption trials in intertidal species. Now...usually...
11 February 2020 4,656 6 View
Hello, I have synthesized zif-8 using a three fold excess of 2-methylimidazole. I would like to purify the excess 2-methylimidazole from uncreated zinc nitrate (very little) and nitrate. What...
11 February 2020 3,602 3 View
In experimenting reuse of waste heat/exhaust fumes, can I use waste heat from electric generating set for heating in refrigerating cycle, Is it practicable? Rankine and Vapour Absorption cycles...
06 February 2020 2,309 4 View
Experimental Investigation on a Low Heat Rejection Engine Operated With a Promising Biofuel Emulsion.
31 January 2020 1,344 6 View
I want to purified my PEG (400 g/mol) after réaction. I converted hydroxyl group for carboxylic one by using succinc anhydride and DABCO. How to remove DABCO and SA from mixture or what can I use...
25 January 2020 767 1 View
Due to rapid change of e m flux can heat energy be generated ? If not, what is the basic cause of heat generation due to friction ? Regards Nityananda Das
22 January 2020 6,397 4 View
Is there anyway that I can implement a heater that can generate a constant power of heat, such as 5W, 10W of heating (not depend on the temperature). Thanks!
21 January 2020 501 8 View
I am trying to perform an energy balance on surface 1 as shown in the attached figure. The main difference is that I am also trying to account for an airflow through the duct. Could someone give...
20 January 2020 3,493 8 View