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Type: Posts; User: enervac

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  1. Replies
    25
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    5,179

    Fresh air taken through the air handler ensures...

    Fresh air taken through the air handler ensures pressurization and ensures AC air leaks out through any crack or opening.
  2. Replies
    25
    Views
    5,179

    Fresh air taken through the air handler ensures...

    Fresh air taken through the air handler ensures pressization and ensures AC air leaks out through any crack or opening.
  3. Replies
    8
    Views
    3,285

    When the refrigerators and car Ac's are with...

    When the refrigerators and car Ac's are with R-134a It can be used for residential also. Only reason I could apprehend is the most of the coils / chasis for WAC are made for R-22 and probably R-410...
  4. Replies
    16
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    2,436

    Limitations of evaporative cooling are it cannot...

    Limitations of evaporative cooling are it cannot be used where the relative humidity level is high like in most of the coastal towns.
  5. Replies
    16
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    2,436

    For evaporative cooling to be effective you need...

    For evaporative cooling to be effective you need wet bulb depression i.e. difference between dry bulb temperature and wet bulb temperature . Higher the difference(wet bulb depression evaporative...
  6. Replies
    13
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    2,877

    Relative humidity level of around 50% should be...

    Relative humidity level of around 50% should be comfortable for human comfort and if the chilled water temperature is 7 degree C it should do the job.Again it depends on the outside air quantity as...
  7. Replies
    23
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    2,112

    You can find out the moisture removed if you...

    You can find out the moisture removed if you measure the incoming air moisture content and leaving air moisture content and at the air quantity to find out the water removed
  8. Replies
    8
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    734

    Humidity will be high if it is oversized

    Relative humidity will be high if the unit is oversized or when the internal heat gain is lower than whjat is considered.
    If the indoor air handling unit is belt driven we can recalculate the load...
  9. Replies
    100
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    13,240

    Are we not doing wrong selling? Customer might...

    Are we not doing wrong selling? Customer might have taken respsonsibility and in the initial years it may work as most of the AC units are soversized due to Ambient variation and load variation....
  10. Disadvantage of Minisplit

    Getting Fresh air is difficult unlike in central system is not feasible in MINI SPLIT OR WINDOW Units. The moment fresh air is not added two things which are important gets defeated i.e. 1 Fresh...
  11. Replies
    16
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    3,436

    if it is thirty years old it must be energy...

    if it is thirty years old it must be energy guzzler compared to the current version equivalent machines. The compressors equipped may be semi hermetic or hermetic reciprocating which is out dated...
  12. Check air quantity which may be low then also...

    Check air quantity which may be low then also humidity can be low. the reason for air quantity lower may be fiter is blocked.
    Check cleaning filter and see any improvement
  13. Shift the humidistat below 1.8 M from floor so...

    Shift the humidistat below 1.8 M from floor so that the room humidity is sensed rather than return air which may be mixture of fresh air and supply air where the present humidistat is located.

    it...
  14. Basically flexible duct shall be restricted only...

    Basically flexible duct shall be restricted only maximum 1 to 1.5 Meter long 20 feet is almost more than 6 meters which is technically not correct.20 feet of surface area of the duct oustide is...
  15. Replies
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    3,001

    Crank case heater is must to ensure the...

    Crank case heater is must to ensure the refrigerant with oil does not affect the compressor and its lubrication.Many of the scroll compressors atleast at lower capacities are not provided.
  16. Replies
    35
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    5,380

    Elephants also slip some times. The leak must be...

    Elephants also slip some times. The leak must be at Brazing joint.If it is in copper tube it may be due to corrosion as we have seen some of the cold room used for animal house the copper cooling...
  17. Replies
    18
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    1,511

    Yes Mr.Joe is correct the charge of power element...

    Yes Mr.Joe is correct the charge of power element will be different for R410 a & R-22.

    Sorry for misleding the form.
  18. Replies
    18
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    1,511

    As long as the anbient does not go higher it may...

    As long as the anbient does not go higher it may work. At higher ambient the pressure difference may be high affecting the performance.
  19. Replies
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    912

    Lee Iaccoca In his autobiography suggest to get...

    Lee Iaccoca In his autobiography suggest to get into Fod Business whenever Recession is there as every one has to eat sandwich.

    If you are HVAC& R Professional You can teach the local technicians...
  20. Replies
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    2,469

    Check filter clogging

    Even if the filter is dirty noise will come as I have observed in many units or the duct may not have vibration isolation by way of flexible canvass.
  21. With background you have may not be adequate for...

    With background you have may not be adequate for maintenance company as it is labour intensive and required skilled technicians if you have survive and sustain in the competitive market.
    Best for...
  22. Thread: Buy American

    by enervac
    Replies
    15
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    806

    Yes buying your own country produce especially...

    Yes buying your own country produce especially during recession or economic down trend helps the nation.However as most of the Europe and American have laready vacated certain market segments by...
  23. Replies
    17
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    1,068

    Check velocity across filter if it higher than...

    Check velocity across filter if it higher than 400-500 feet per minute then also static will be high.
  24. Replies
    16
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    1,378

    please get the temperatures at Return air both...

    please get the temperatures at Return air both dry bulb and RH% or wet bulb temperature, The similar readings at otlet i.e canvass and also room.
    Check the supply air and return air ducts are...
  25. Replies
    16
    Views
    1,378

    please get the temperatures at Return air both...

    please get the temperatures at Return air both dry bulb and RH% or wet bulb temperature, The similar readings at otlet i.e canvass and also room.
    Check the supply air and return air ducts are...
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