SOLDERS & CLAENING AGENTS IN REFRIGERATION
REFRIGERATION EXPANSION VALVES MULTIPLE CHOICE QUESTION (MCQ) WITH ANSWERS MCQ increases the understanding and clarity. More and more MCQ on expansion valves used in refrigeration will be of further usefulness. Capillary tube is used in plants having cooling capacity of (a) < 3 tons (b) > 3 tons (c) <10 tons (d) None (Ans: a)…
DATUM LEVEL IN REFRIGERATION ASSUMED DATUM LEVEL FOR VARIOUS VAPOR REFRIGERANTS FPS units(–400 F) mks units( 00 C) SI units (-400 C) hl=0 sl=0 hl=100 k cal/kg sl=1.0 k cal/kg 0 C hl=0 sl=0 Where hl is enthalpy of liquid and sl is entropy of liquid respectively. FOR WATER, ASSUMED DATUM LEVEL IN SI…
TYPES OF COOLING TOWERS CLASS NOTES FOR ENGINEERING Cooling towers cool the hot water from the condenser for reuse. A cooling tower reduces the cost of water used in condenser. Use of water in the condenser is for condensing refrigerant for medium cooling plants. Cooling tower is a special type of heat exchanger. In this, hot…
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 (…
REFRIGERANTS CLASS NOTES FOR MECHANICAL ENGINEERING Refrigerant causes cooling in a refrigeration system. It flows in the refrigeration system like blood circulates in the human body. There are different refrigerants for different applications. For making their study and use simple, there is a nomenclature and numbering of refrigerants. It has to have desirable properties…
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…