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  1. nkhhh2003

    VSD centrifugal chiller how it functions to control capacity

    Apologize for the late reply, I have checked from here in the controls manual from Carrier 19DV centrifugal unit. Link It somehow mentioned (page 23, item 5.8) that the controls manual that during the startup, only guide vane will function, thereafter, VFD will kick in to modulate. @Moideen...
  2. nkhhh2003

    VSD centrifugal chiller how it functions to control capacity

    I am curious how the VSD (Veriable speed) centrifugal chiller able to control the capacity. There is already a guide vane to control the capacity. In the normal chiller (non VSD), the guide vane will open / close to match the required capacity. With the addition of VSD that can control the...
  3. nkhhh2003

    Bitumen hot pour or cold applied?

    Tank is a chilled water storage, 4 degree Celsius at lowest. The cold bitumen paint I am referring to is this. Link Ambient: 38 deg C, design: 4 deg C, slab is 4 inches above ground. "Easier" as in no need to find a bitumen boiler and not having to take the risk of getting burnt from the hot...
  4. nkhhh2003

    Bitumen hot pour or cold applied?

    Aboveground cylindrical steel tank to sit on a concrete slab. Tank has to be insulated at the bottom, by using foamglass. Underneath of foam glass, planning to apply a coat of bitumen, as vapor barrier. A video I found on youtube is recommending hot pour method. Link But I am exploring to use...
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