Tek-Tips is the largest IT community on the Internet today!

Members share and learn making Tek-Tips Forums the best source of peer-reviewed technical information on the Internet!

Register Log in
  • Congratulations cowski on being selected by the Eng-Tips community for having the most helpful posts in the forums last week. Way to Go!

Search results for query: *

  • Users: Cjrac
  • Order by date
  1. Cjrac

    Fill water for Chilled Water Hydronic Piping System

    add a system feeder (axiom or similiar) and tie into expansion tank..provide a hose bibb connection adjacent to the system feeder to fill the system feeder tank .
  2. Cjrac

    Dust Collection Unit on Mezzanine

    This dust collector is a camfil 'lowboy' situated on a mezzanine over a small woodworking shop (used for training - no production). The shop will have all the standard woodworking equipment..table saws..planer..bandsaw etc. Is a dust conveyance system required to empty the collector dust bin...
  3. Cjrac

    Wrong refrigerant charge pressure gauges-High head pressure

    Recently, a chiller plant we designed kept cutting out on high head pressure and were told it was a result of an incorrectly sized condesing unit. However when I looked back at site pictures from when the chiller was being charged I noticed the pressure gauge manifold had 'R410a' on it when the...
  4. Cjrac

    Dedicated Outdoor Air System vs. Recirculating System

    Im in a debate over indoor humidity levels. I believe a recirculating air system bringing in a percentage of outdoor ventilation air will have higher humidity levels compared to a 100% outdoor air system. The building is a high school in a remote location, very cold dry northern climate...
  5. Cjrac

    Hot crawlspace space for radiant heating

    I am working on a building in Nunavut(very cold minus 50F design). Due to permafrost the buildings are built up on stilts. There is an insulated crawl space under the entire building. The client does not want in slab heating. The crawl space is heated with finned tube convector heaters. I am...
  6. Cjrac

    Finned Tube Radiation

    Anyone know of any advantages to using an 1 1/4" finned tube rather than a 3/4" for baseboard heating?
  7. Cjrac

    Undersized 100 ton Condensing Unit

    Thanks for the help guys..much appreciated
  8. Cjrac

    Undersized 100 ton Condensing Unit

    Chiller has two compressors: circuit A & circuit B, circuit A= 60 tons cooling, circuit B= 45 tons cooling. Chiller compressors have 8 steps of modulation capacity, if a few stages of modulation cut off of circuit B (by chiller representative) the chiller performance would be de-rated chiller...
  9. Cjrac

    Undersized 100 ton Condensing Unit

    During commissioning of a new modulating 105 ton screw chiller, the chiller kept tripping due to high head pressure. It was found that the condensing unit capacity of 105 tons was matched to the chiller without taking into consideration the added heat of compression (approx. 20 tons). There was...
  10. Cjrac

    Hot water re-heat coil & baseboard convector sequence of operation

    Hi Guys, I have an application where the main air handling unit (constant volume) is providing slightly cool air (65 deg F) to both interior and exterior zones. Each zone has its own re-heat coil. The exterior zones also have a baseboard convector heater. I am unsure of the best way to sequence...

Part and Inventory Search

Back
Top