Articles Posted in the " Air Conditioning " Category

  • Summary of Air conditioning

    Summary of Air conditioning

    Summary of Air conditioning DEFINITION OF AIR CONDITIONING It is a process of controlling simultaneously four parameters, temperature, humidity, purity and velocity of air in a closed space. Air conditioning is cooling in summer, heating in winter with ventilation. PRACTICAL APPLICATIONS Air conditioning is required for comfort, food preservation, for a better accuracy measuring instruments […]


  • Refrigeration-Match columns – Filling blanks

    Refrigeration-Match columns – Filling blanks

    Refrigeration –Match columns – Filling blanks Keywords: Ducts-suction pressure-discharge pressure-halide torch Abstract Matching of refrigeration parts with refrigeration processes increases understanding of the system. Similar advantage one gets in gap filling regarding refrigeration and air conditioning.   REFRIGERATION AND AIR CONDITIONING MATCH THE FOLLOWINGS Column I Column II 1 Supply Duct (A)   Source of air […]


  • Air conditioning and industrial refrigeration

    Air conditioning and industrial refrigeration

     Air conditioning and industrial refrigeration Comfort conditions are unique. Industrial refrigeration needs refrigeration over a wide range of temperatures. Most of comfort units are of less tonnage capacity as compared very high tonnage cooling requirements in industry.  Comfort units are  factory assembled where industrial units are field assembled. Comparison of air conditioning and industrial refrigeration […]


  • SENSIBLE HEAT FACTOR (SHF)

    SENSIBLE HEAT FACTOR (SHF)

     SENSIBLE HEAT FACTOR (SHF) There are many types of sensible heat factors. These are described below: (a) ROOM SENSIBLE HEAT FACTOR (RSHF) RSHF=RSHL/(RSHL+RLHL) =RSHL/TRHL where RSHL is room sensible heat load RLHL is room latent heat load  TRHL is total room heat load Example – Room Sensible Heat Factor – RSHF The sensible heat gain […]


  • Cooling load calculations

    Cooling load calculations

      Cooling load calculations Cooling load calculations help to find the cooling capacity of a refrigeration plant for a certain application (cinema-library etc). These cooling loads consist of sensible and latent heat loads. Sensible heat loads are due to temperature difference. Latent heat loads are due moisture difference. Some of cooling loads are building transmission […]


  • Air Conditioning Units

    Air Conditioning Units

    Air Conditioning Units Different cooling requirements use different types of refrigeration units. Domestic applications use window and split units. These are air cooled units.Commercial applications use packaged units which factory assembled and are water cooled. Room Air conditioners A room air conditioner is often called  as AC. It is also called a window air conditioner. […]


  • Interview Short  Questions-Psychrometry and air conditioning

    Interview Short Questions-Psychrometry and air conditioning

    Interview Short Questions-Psychrometry and air conditioning What is a specific humidity? What is an adiabatic saturation? What happens to relative humidity if the dry bulb temperature increases? What is heating and humidification? What is cooling and dehumidification? What is heating and dehumidification? What is cooling and humidification? What is chemical dehumidification? What is adiabatic saturation? […]


  • * Interview Short  Question Answers on air conditioning

    * Interview Short Question Answers on air conditioning

    Interview Short Question Answers on air conditioning Q. Differentiate between split A.C system and window A.C system. Window A.C. System: The air conditioner is fitted in the window such that the cooling coil is towards the inside of the room and condensing unit is towards outside of the room. Hence there are changes in the window. […]


  • Air conditioning

    Air conditioning

     AIR CONDITIONING  Definition of Air conditioning It is a process of controlling simultaneously temperature, humidity, purity and velocity of air. i.e. (i) Temperature between 22 to 270C (ii) Relative humidity 50 to 60 % (iii) Dust particles of size >   100  microns are not permitted (iv) Velocity 8 to 10 m/s APPLICATIONS OF COMFORT AIR […]


  • * Refrigeration Basics- Conventional & non -conventional

    * Refrigeration Basics- Conventional & non -conventional

     Refrigeration Basics-Conventional & non -conventional Refrigeration is lowering of temperature. Both conventional as well as non-conventional methods are used. Drying agent like silica gel is used in the drier cum filter to remove any moisture. Steel pipes are used with ammonia where copper pipes are used with halogenated hydrocarbon refrigerants. PIONEERS IN REFRIGERATION Jacob Parkinson […]