The material of pipe lines for a system using Freon as a refrigerant should be

A. Brass

B. Copper

C. Steel

D. Aluminium

Please do not use chat terms. Example: avoid using "grt" instead of "great".

You can do it
  1. Ammonia is
  2. In a vapour compression cycle, the refrigerant immediately after expansion valve is
  3. Hydrogen is used in Electrolux refrigeration system so as to _________ the rate of evaporation of the…
  4. For air conditioning the operation theatre in a hospital, the percentage of outside air in the air supplied…
  5. Pick up the wrong statement. A refrigerant should have
  6. The freezing point of sulphur dioxide is
  7. Choose the wrong statement
  8. The centrifugal compressors are generally used for refrigerants that require
  9. The wet bulb temperature during sensible heating of air
  10. Which of the following refrigerant has the lowest boiling point?
  11. For obtaining high COP, the pressure range of compressor should be
  12. Most air cooled condensers are designed to operate with a temperature difference of
  13. Pressure of water vapour is given by
  14. The dehumidification process, on the psychrometric chart, is shown by
  15. Absorption system normally uses the following refrigerant
  16. The conditioned air supplied to the room must have the capacity to take up
  17. Most of the domestic refrigerators work on the following refrigeration system
  18. Allowable pressure on high pressure side or ammonia absorption system is of the order of
  19. The freezing point of R-12 is
  20. An evaporator is also known as
  21. Freon group of refrigerants are
  22. In a domestic vapour compression refrigerator, the refrigerant commonly used is
  23. The curved lines on a psychrometric chart indicates
  24. Relative humidity is given by (where pv = Partial pressure of water vapour, pb = Barometric pressure,…
  25. As relative humidity decreases, the dew point temperature will be ________ wet bulb temperature.
  26. The temperature of air recorded by a thermometer, when it is not affected by the moisture present in…
  27. In case of sensible heating of air, the coil efficiency is given by (where B.P.F. = Bypass factor)
  28. On the pressure-enthalpy diagram, condensation and desuperheating is represented by a horizontal line…
  29. Which of the following statement is correct for ammonia as a refrigerant?
  30. The wet bulb temperature during sensible cooling of air