Refrigeration & Air ConditioningR16 semester 3-2 lecture notes

Course goals:
The course is to know the essential cycles of assorted refrigerating programs, their efficiency analysis alongside
with particulars of system elements and refrigerant properties. The course can also be geared toward imparting data of
psychrometric properties, processes that are utilized in air-conditioning programs for consolation and industrial
purposes.
UNIT – I
INTRODUCTION TO REFRIGERATION: Necessity and purposes – unit of refrigeration and C.O.P. –
Mechanical refrigeration – varieties of supreme cycles of refrigeration. air refrigeration: bell coleman cycle – open and
dense air programs – refrigeration programs utilized in air crafts and issues.
UNIT – II
VAPOUR COMPRESSION REFRIGERATION: Working precept and important elements of the plant –
easy vapour compression refrigeration cycle – COP – illustration of cycle on T-S and p-h charts – impact of
sub cooling and tremendous heating – cycle evaluation – precise cycle affect of assorted parameters on system
efficiency – use of p-h charts – numerical issues.
UNIT III
REFRIGERANTS – Fascinating properties – classification – refrigerants used – nomenclature – ozone depletion –
international warming
VCR SYSTEM COMPONENTS: Compressors – basic classification – comparability – benefits and
disadvantages. condensers – classification – working rules evaporators – classification – working rules
growth gadgets – varieties – working rules
UNIT IV
VAPOR ABSORPTION SYSTEM: Calculation of most COP – description and dealing of NH3 – water
system and Li Br –water ( Two shell & 4 shell) System, precept of operation three fluid absorption system,
salient options.
STEAM JET REFRIGERATION SYSTEM: Working Precept and fundamental elements. precept and operation
of (i) thermoelectric fridge (ii) vortex tube.
UNIT – V
INTRODUCTION TO AIR CONDITIONING: Psychometric properties & processes – characterization of
wise and latent warmth hundreds –– want for air flow, consideration of infiltration – load ideas of RSHF,
GSHF- issues, idea of ESHF and ADP temperature.
Necessities of human consolation and idea of efficient temperature- consolation chart –consolation air con –
necessities of business air con, air con load calculations.

III 12 months – II Semester
L T P C
four zero zero 3
REFRIGERATION & AIR CONDITIONING
UNIT – VI
AIR CONDITIONING SYSTEMS: Classification of apparatus, cooling, heating humidification and
dehumidification, filters, grills and registers, followers and blowers. warmth pump – warmth sources – completely different warmth pump
circuits.
Textual content Books:
1. A Course in Refrigeration and Air con / SC Arora & Domkundwar / Dhanpatrai
2. Refrigeration and Air Conditioning / CP Arora / TMH.
References:
1. Refrigeration and Air Conditioning / Manohar Prasad / New Age.
2. Rules of Refrigeration /Dossat / Pearson Schooling.
3. Primary Refrigeration and Air-Conditioning / Ananthanarayanan / TMH
Course outcomes: On the finish of the course the scholars ought to be capable to:
After present process the course the coed ought to be ready to research varied refrigerating cycles and
consider their efficiency. The coed additionally ought to be capable to carry out cooling load calculations and choose the
acceptable course of and gear for the required consolation and industrial air-conditioning.