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  1. charls1

    Duct weights for structural engineer

    Hi HVAC-Novice (Mechanical) You can use ASHRAE Handbook, The ASHRAE (American Society of Heating, Refrigerating and Air-Conditioning Engineers) Handbook is a valuable resource for HVAC (Heating, Ventilation, and Air Conditioning) systems. The "HVAC Duct Construction Standards" manual is a...
  2. charls1

    Chiller ammonia & freon

    Dear all, Our production line will install chiller line. please advise which one is better between chiller with freon or ammonia and what are the most problem happens during operation? thanks charls
  3. charls1

    engine generator set power rating

    Hi zezo (Electrical), - KVA (Kilovolt-Ampere) means the apparent power in a circuit, which is the combination of both real power (KW) and reactive power. KVA is the vector sum of KW and KVAR (reactive power) and is measured in kilovolt-amperes. - KW (Kilowatt)means represents the real power in...
  4. charls1

    type chemical reactor jacket

    @LittleInch, Thanks a lot
  5. charls1

    type chemical reactor jacket

    @LittleInch it is vertical vessel charls
  6. charls1

    type chemical reactor jacket

    @pierreick, thanks for your advice bro. @Latexman, our process temp is to cooling down initial 90oC into 50oC in optimum time.
  7. charls1

    type chemical reactor jacket

    @r6155, Need others second opinion about the issue. thanks
  8. charls1

    type chemical reactor jacket

    @pierreick, @MJCronin, @LittleInch thanks a lot. Our existing cooling tank (conventional) having problem with cooling time for batch process (slurry product) And we will change into conventional with 2 inch inlet/outlet (bigger then existing) or we have to change into Half pipe coil jacket to...
  9. charls1

    type chemical reactor jacket

    Dear all, As far i knew, there are 5 type of reactor jacket: 1. Conventional jackets 2. Half pipe coil jackets or split coil jacket 3. Dimple jackets 4. Constant flux cooling jacket 5. Internal coil What are the strong & weakness of chemical reactor jackets from above, which one is better in...
  10. charls1

    boiler pipelines

    @LittleInch Yes, correct only connecting one header with another as a back up when 1 boiler having problem or overhaul Consideration if using 2 pipelines will impact to cost Efficient in steam utilization
  11. charls1

    boiler pipelines

    Hello my Engineer colleagues We need your advise. if we have 2 boiler units, 1 unit with a capacity of 10 tons/hour and located in factory A. 1 unit boiler with a capacity of 8 tons/hour and located in factory B. The distance between factories A & B is 100 meters. each boiler has a steam header...
  12. charls1

    glucose storage tank

    Guys, can you given example of design for making a glucose storage tank complete with heating, cleaning, pipe and pump system? many thanks for your sharing & help. regards, charls
  13. charls1

    wet battery

    Guys, Wet battery (Accumulator) problem analysis as shown in the picture, because what be like that? Thanks charls https://files.engineering.com/getfile.aspx?folder=0288ec73-faf1-411f-adbc-42cc08abd564&file=aki71_250.png
  14. charls1

    Calculate blower flow at production room

    @nuuvox000, What is the heat rejection rate of the cookers? i have no idea how to calculate Where is the makeup air coming from to make up for the exhaust? from outside building; What temperature is it? 32oC What is the maximum temperature that is acceptable in the room? 29oC In my mind only...
  15. charls1

    Calculate blower flow at production room

    Guys, I need your advise We have production room with dimensions of length = 12 meters, width = 5 meters, height = 3 meters and will be installed with blower and exhaust so that air circulation occurs during the cooking process in production and make operator can work comfortably. How to...
  16. charls1

    helical gearbox calculation

    @ dvd (Mechanical), Can't open attached file.. can you resend it Regards, Charles
  17. charls1

    helical gearbox calculation

    Guys, i'm trying to calculate 'Torque & Power' from helical gearbox to improve our machine capabilities. Can you given an example torque & power calculation from helical gearbox? thanks...
  18. charls1

    HTML meaning

    <!DOCTYPE html> <html> <head> <meta charset="utf-8" /> <title>Hello OpenCV.js</title> </head> <body> <h2>Chess.js</h2> <p id="status">OpenCV.js is loading...</p> <div> <div class="inputoutput"> <img id="imageSrc" alt="No Image" , width="200" />...
  19. charls1

    Microcontroller ESP32 &amp; RTD100

    Attached is reference to used sensor RTD100 to detect cooling water temperature using Microcontroller ESP32. Questions: 1. How is communication between ESP 32 with RTD100? (as far i know RTD100 working with resistance not ampere 4-20) 2. Possible using another sensor to replace RTD100, if...
  20. charls1

    ratio gearbox and kw motor

    guys.. need your advise We need to changes existing 7.5kw motor mixing. How many kw gearbox motor and what gearbox ratio is needed if it is to be used for mixing sugar powder so that it is homogeneous with a capacity of 1200 kg? regards, charles
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