AI6005 - REFRIGERATION AND AIR-CONDTIONING FOR AGRICULTURAL ENGINEERS (Syllabus) 2013-regulation Anna University

AI6005 - REFRIGERATION AND AIR-CONDTIONING FOR AGRICULTURAL ENGINEERS (Syllabus) 2013-regulation Anna University

AI6005	REFRIGERATION AND AIR-CONDTIONING FOR AGRICULTURAL ENGINEERS	LPTC

3003

OBJECTIVES:

• To understand the underlying principles of operation in different refrigeration & Air conditioning systems and components.
• To provide knowledge on basic design aspects of Refrigeration & Air conditioning systems.

UNIT I	REFRIGERATION CYCLE	8

Review of thermodynamic principles of refrigeration. Concept of Air refrigeration system. Vapour compression refrigeration cycle – use of P.H charts – multistage and multiple evaporator systems – cascade system – COP comparison.

UNIT II	REFRIGERANTS, SYSTEM COMPONENTS AND BALANCING	9

Compressors – reciprocating & rotary (elementary treatment) – condensers – evaporators cooling towers. Refrigerants – Properties – selection of refrigerants, Alternative refrigerants, cycle controls.

UNIT III	PSYCHROMETRY	10

Psychrometric processes use of psychrometric charts – grand and room sensible heat factors – bypass factors – air washers, requirements of comfort air conditioning, summer and winter air conditioning.

UNIT IV	AIR CONDITIONING SYSTEMS	9

Cooling load calculation working principles of – centralized Air conditioning systems, split, ductable split, packaged air conditioning, VAV & VRV systems. Duct design by equal friction method, indoor air quality concepts.

UNIT V	UNCONVENTIONAL REFRIGERATION CYCLES	9

Vapor absorption systems – Ejector jet, steam jet refrigeration, thermo electric refrigeration. Applications: ice – plant – food storage plants – milk chilling plants.

TOTAL : 45 PERIODS

OUTCOME:

• The students will have a clear understanding of psychrometry, refrigeration and air conditioning and their applications to agriculture

TEXT BOOKS:

1. Manohar Prasad, “Refrigeration and Air Conditioning”, Wiley Eastern Ltd., New Delhi, 1983.
2. Arora, C.P., “Refrigeration and Air Conditioning”, Tata McGraw Hill, New Delhi, 1988.

REFERENCES:

1. Dossat, R.J., “Principles of Refrigeration and Air Conditioning”, Pearson Education Pvt. Ltd., New Delhi, 1997. 2. Jordon and Priester, “Refrigeration and Air Conditioning”, Prentice Hall of India Pvt. Ltd., New Delhi, 1985. 3. Stoecker, N.F., and Jones, “Refrigeration and Air Conditioning”, Tata McGraw Hill, New Delhi, 1981.