Articles Posted in the " Refrigeration " Category

  • AIR CONDITIONING MULTIPLE CHOICE QUESTIONS (MCQ) WITH ANSWERS

    AIR CONDITIONING MULTIPLE CHOICE QUESTIONS (MCQ) WITH ANSWERS

      AIR CONDITIONING MULTIPLE CHOICE QUESTIONS (MCQ) WITH ANSWERS MCQ makes understanding full. It also increases the level of clarity. Air conditioning is simultaneous control of temperature, humidity, purity and velocity. Comfort and industrial air conditioning are two types of air conditioning. Industrial air conditioning improves the quality and quantity of a product. Comfort air […]


  • COLING LOAD CALCULATIONS MULTIPLE CHOICE QUESTIONS (MCQ) WITH ANSWERS

    COLING LOAD CALCULATIONS MULTIPLE CHOICE QUESTIONS (MCQ) WITH ANSWERS

    COOLING LOAD CALCULATIONS MULTIPLE CHOICE QUESTIONS (MCQ) WITH ANSWERS MCQ increases level of clarity and understanding. Cooling load calculations means finding the capacity of the cooling plant for a particular application. Cooling loads consist of sensible and latent heat load contributed by different sources. Inside and outside design conditions along with cooling loads help in […]


  • PSYCHROMETRY MULTIPLE CHOICE QUESTIONS (MCQ) WITH ANSWERS

    PSYCHROMETRY MULTIPLE CHOICE QUESTIONS (MCQ) WITH ANSWERS

    PSYCHROMETRY MULTIPLE CHOICE QUESTIONS (MCQ) WITH ANSWERS MCQ on psychrometry increases level of understanding & clarity. Psychrometry deals with the properties of moist air. Psychrometric processes on psychrometry chart help to reach from the existing condition of air to reach the design conditions. It is very useful in air conditioning applications. Fig. Psychrometric Chart ( […]


  • STEAM JET REFRIGERATION MULTIPLE CHOICE QUESTIONS (MCQ) WITH ANSWERS

    STEAM JET REFRIGERATION MULTIPLE CHOICE QUESTIONS (MCQ) WITH ANSWERS

    STEAM JET REFRIGERATION MULTIPLE CHOICE QUESTIONS (MCQ) WITH ANSWERS  MCQ increases clarity and understanding. It is applied where steam is available. It is vibration free. This is economical as compared to other systems of refrigeration. Number of nozzles in Steam Jet Refrigeration is Two Four Six None ANS: (d) Number of nozzles in Steam Jet […]


  • GAS REFRIGERATION MULTIPLE CHOICE QUESTIONS (MCQ) WITH ANSWERS

    GAS REFRIGERATION MULTIPLE CHOICE QUESTIONS (MCQ) WITH ANSWERS

    GAS REFRIGERATION MULTIPLE CHOICE QUESTIONS (MCQ) WITH ANSWERS COP of gas refrigeration is much less than one. All the aircrafts use Gas refrigeration  because of easy availability, free, safe & eco-friendly nature of air as refrigerant. Fig. Bell-Coleman Cycle Fig. Bell Coleman Cycle on Temperature-Entropy Chart A gas refrigeration works on Carnot Cycle Rankine Cycle […]


  • REFRIGERATION FILLING BLANKS AND MATCH COLUMNS CLASS NOTES

    REFRIGERATION FILLING BLANKS AND MATCH COLUMNS CLASS NOTES

    REFRIGERATION FILLING BLANKS AND MATCH COLUMNS CLASS NOTES   In refrigeration, fill in blanks is done with deep understanding and clarity. This process of filling blanks  increases knowledge. It helps  to apply fundamentals in real life applications. Fig. Simple Vapor Compression Refrigeration Fig. Vapor Absorption Refrigeration Fill in the blanks in refrigeration is from university […]


  • AIRCRAFT COOLING SYSTEMS CLASS NOTES FOR MECHANICAL ENGINEERING

    AIRCRAFT COOLING SYSTEMS CLASS NOTES FOR MECHANICAL ENGINEERING

    AIRCRAFT COOLING SYSTEMS CLASS NOTES FOR MECHANICAL ENGINEERING Inside the aircraft, a cooling system is required to maintain comfortable conditions. It may on the ground or in the air. Different cooling systems are used. These are Simple, boot strap, generative and reduced ambient cooling systems. ANALYSIS OF AIRCRAFT COOLING SYSTEMS Simple Cooling System Refrigerant is air […]


  • INTRODUCTION AIR CONDITIONING & FRIGERATION CLASS NOTES

    INTRODUCTION AIR CONDITIONING & FRIGERATION CLASS NOTES

    INTRODUCTION AIR CONDITIONING & REFRIGERATION CLASS NOTES    Air conditioning includes comfort and industrial processes. It increases the comfort to living beings and improve the quality of industrial products. Refrigeration is cooling only. Air conditioning is cooling in summer and heating in winter. It maintains moisture and purity & velocity of air.  Air Conditioning It […]


  • PSYCHROMETRIC PROPERTIES & PSYCHROMETRIC CHART CLASS NOTES

    PSYCHROMETRIC PROPERTIES & PSYCHROMETRIC CHART CLASS NOTES

    PSYCHROMETRIC PROPERTIES & PSYCHROMETRIC CHART CLASS NOTES Psychrometry is the study of the properties of moist air (dry air + water vapor). It includes the study of psychrometric chart and  Psychrometric processes. This chart contains psychrometric (moist air) properties. Use psychrometric processes to achieve desired conditions from the existing room conditions. It is quite easy […]


  • REFRIGERATION-TROUBLE SHOOTING CLASS NOTES

    REFRIGERATION-TROUBLE SHOOTING CLASS NOTES

    REFRIGERATION TROUBLE SHOOTING CLASS NOTES   Trouble shooting in refrigeration and air conditioning tells the working faults of a system. Discussed remedial measures. Few precautions will make the system trouble free. List of troubles encountered UNIT DOES NOT RUN AT ALL REFRIGERATION UNIT RUNS BUT NO COOLING LESS COOLING BUT THE UNIT RUNS  CONTINUOUSLY RUNNING […]