For the same volume, which reactor has the highest conversion, a CSTR or a PFR? Why?
For same volume of reactor, PFR gives higher conversion compared to CSTR for Positive order reaction.The basic difference between these two types of reactors is that CSTR maintains same concentration at any point in reactor while PFR has no axial mixing and has only radial mixing. CSTR reduces concentration of reactant to minimum in less time than what PFR does. Rate of reaction is directly proportional to reactant concentration for positive order reactions. More the concentration more will be the rate. Hence PFR gives higher conversion than CSTR for positive order reactions.Edit-1: In one of the answers, Didem Zengin has given levenspiel plot for the distinction between two reactors.Please go through the same since graphical representation is more interpretative than theoretical explanation.
Need conversion help?
Mass rate of filling in kg/min : 1.7 g/min * kg/1000g = 0.0017 kg/min Volume rate of filling = mass rate of filling / density ==> 0.0017 kg/min / 1000 kg/m3 =0.0000017 m3/min Volume of bottle= 193 U.S. fluid gallons * 231 in3 / U.S. fluid gallon * m3/ 61023.744095 in3 =0.73058 m3 Time required for filling the bottle equals Volume of bottle divided by rate of filling t=V/rate ==> t=0.73058 m3/ (0.0000017 m3/min)= 4.2976 E-7 min* 1 hour/ 60 min * 1 day/ 24 hour * 1 year / 365day = 8.1766 E-13 year
LNG What is the conversion rate of 200,000 m3 LNG to MMBTU?
You have to be careful here unless you are in need of only a rough answer. LNG is not a specific compound or mixture. The heating value varies depending on where it is sourced from, how much vaporization has occurred, and which liquefaction scheme was used. The density also varies due to composition and temperature.A 2012 study of LNG properties showed a variation in heating value from different locations of 39.9 (Alaska) to 44.76 (Australia). That’s slightly more than a 10% spread. If I were buying a cargo of LNG that difference is a lot of cash. Generally LNG is sold based on heat content.So the correct answer is you need to know the heating value and density and also be aware of whether the quoted heating value is the higher or lower value (HHV or LHV).
How do you calculate refrigerator volume in liters?
Remove the drawers and shelves from the refrigerator if they will prevent you from measuring the interior.1)Measure the height of the main interior compartment of the refrigerator, from top to bottom. Use the same units to measure your dimensions.2)Measure the depth of the main interior compartment of the refrigerator, from the foremost edge to the rear wall.3)Measure the length of the of the main interior compartment of the refrigerator, from left to right.4)Multiply the three numbers together to find the volume of the main interior compartment of the refrigerator.For example, if your measurements are 90 cm by 60 cm by 60 cm, the result would be a volume of 324000 cubic cm. Divide by 1000 to get answer in litre.324 litre s.To do this you require a measuring tape, a pad and pencil.
What is relationship between specific heat capacity and heat capacity?
Heat capacity (Cv) of a material is the amount of energy needed for the raise of one degree Celsius (or kelvin). Hence, it goes as Joules/Kelvin.Now. Any “specific” property, in thermodynamics, is an intensive property (Which means, as you know, is any property independent of it’s measuring parameter). And here, mass is the “measuring parameter”.Specific heat capacity (cv) of a material is, thus, the energy needed to raise one unit mass of that material through one degree Celsius (or kelvin). Hence it goes as Joules/(Kelvin*kilogram)As already answered, Cv= mass*cv.Extra- Specific volume is the volume per unit mass (unit- cubic metres/kilogram)
How do you convert liters to kilograms?
You can not convert incompatible units.1 kg is a unit of mass (1000 grams).1 liter is a unit of volume (1000 cubic centimeters).The ratio between these two is the density of a material.For water this ratio is very close to 1 (at 4°C it is exactly 1).For other materials it will probably be a different number.
How much sand is in 1 cubic meter volume?
Simply,Weight of sand= Density of sand x Volume of sandhere, Volume of sand =1 cubic meterBulk density of sand = 1920kg/m^3Weight = 1920 x 1 = 1920 kgSince 1m^3=35.3147 CFTQuantity of sand in CFT = 1/35.3147 = 0.0283 CFTIf your asking quantity of sand in Concrete and brickwork then quantity will be in proportion, Watch this video to learn how to calculate quantity of sand in brickwork and concrete.HOW TO CALCULATE CEMENT, SAND AND AGGREGATE QUANTITY IN CONCRETEEasy method to CALCULATE NO OF BRICKS AND QUANTITY OF CEMENT & SAND in BRICKWORKHope it helpsWe Civil Engineers
How is BTU converted into CFM?
First of all the BTU never be converted into CFM because both the quantity have different units. The BTU is a measure of energy or power whereas CFM is the measure of discharge or airflow.Due to some standards set up by American Society of refrigeration and air conditioning engineers (ASHRAE) most people generally says that 1 ton or 12000BTU is equal to 400 CFM which is completely wrong to say. As per the human comfort standards, 1 ton or 12000BTU of air conditioned should have a discharge of at least 400 CFM for the human comfort. If the discharge is less than 400 CFM then the human being sitting in the cool area is going to feel suffocated even at low temperature. Also 12 CFM of air is required for a single human being to get comfort.THE CFM IS THE MEASURE OF AIR QUANTITY IN THE FIELD OF HEATING VENTILATION AND AIR CONDITIONING.