Dive deep into the principles and applications of the vapor compression cycle with this detailed presentation. Explore various types of vapor compression cycles, understand their operational intricacies, and grasp the underlying numerical concepts through illustrative examples. An essential resource for students, engineers, and professionals in thermal and refrigeration sciences."
Introduction to IEEE STANDARDS and its different types.pptx
Vapour Compression Cycle: Types and Numerical Analysis
1. Prof.R.S.KOLHE
Prof. R.S. KOLHE
ME (HEAT POWER)
BE (MECHANICAL)
WELCOME TO
Heating, Ventilation, Air
Conditioning and Refrigeration
Engineering
2. Lecture No 01
Topics to be covered
• Basics of HVAC
• Vapour compression cycle (VCR)
• Performance of VCR
• Representation of VCR on P-H and T-S plane
4. • HEATING : Designing the system for low
temperature climate ( cold climate)
• VENTILATION: It is the fresh air penetrated form
outside. It is a process of replacing air in
conditioning space by fresh air having high indoor
quality .
• REFRIGERATION : It is process of removing heat
from body or space so that its temperature first
reduce and then maintained at a temperature less
than surrounding.
• AIR CONDITIONING : Air-conditioning is the process
of treating air so as to control its temperature,
humidity, cleanliness( air quality) and distribution to
meet the requirements of the condition space.
5. Expectation From HVAC
• Cooling or Heating to control Temperature.
• Humidify or Dehumidify to control moisture
content.
• Filter to remove contaminants
• Ventilate to supply fresh high quality air .
• Circulate to regulate air motion .
7. Standard Vapour Compression
Refrigeration System (VCRS)
• Process 1-2: Isentropic
compression of saturated
vapour in compressor
• Process 2-3: Isobaric heat
rejection in condenser
• Process 3-4: Isenthalpic
expansion of saturated
liquid in expansion device
• Process 4-1: Isobaric heat
extraction in the
evaporator
16. The equipment efficiency is given as EER or kW/TR
ENERGY EFFICIENCY RATIO (EER)
The Energy Efficiency Ratio (EER) of an HVAC cooling
device is the ratio of output cooling energy (BTU/h) to input
electrical energy (in watts) at a given operating point.
(EER)R =
kW/TR Use for large capacity equipment such as Chillers
H eat ro m o val ra te in W att
E n erg y In p u t in W att
R
kW /T R =
P ow er in p u t (kW )
C ap acity (T R )
17. Different cases of vcc
case 1: Dry saturated vapour at Entry of the compressor