SPPU
TE Mechanical (2015 Course)
Subject: Refrigeration & Air Conditioning
Unit IV: Psychrometry and Air Conditioning Load Estimation
NPTEL Video Lectures
Unit IV Part I: Psychrometry
Introduction to Air-conditioning
Basic Psychrometry Terms: Dry, moist and saturated air, DBT, WBT, DPT, wet bulb depression, dew point depression, Specific and relative humidity, degree of saturation, enthalpy of moist air
Psychrometric Chart: How to locate points and determine values on chart
Psychrometry processes: Sensible cooling and heating, humidification and dehumidification and combination of these processes, BPF of coil
Mixing of two air streams, ADP
SHF, RSHF, GSHF, ESHF. Factors contributing to cooling load, Numerical based on load analysis
Unit IV Part II: Human Comfort
Thermodynamics of human body, comfort and comfort chart
Factors affecting human comfort
Concept of infiltration and ventilation
Indoor air quality requirements
Note 1: There will
be no numerical treatment on part II: Human Comfort.
Note 2: For more information, you may also watch other available NPTEL lectures for the subject.
Note 2: For more information, you may also watch other available NPTEL lectures for the subject.
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