Skip to main content

SYLLABUS SIXTH SEMESTER/KURUKSHETRA UNIVERSITY - REFRIGERATION & AIR CONDITIONING

SYLLABUS - REFRIGERATION & AIR CONDITIONING
KURUKSHETRA UNIVERSITY
  
B. Tech (Sixth semester) Mechanical engineering
ME 302 E Refrigeration and Air-Conditioning
 Total Theory: 100 Marks        Sessional       : 50 marks             Duration of Exam: 03 hours

UNIT I
Basics of heat pump & refrigerator; Carnot’s refrigeration and heat pump; Units of refrigeration; COP of refrigerator and heat pump; Carnot’s COP; ICE refrigeration; evaporative refrigeration; refrigeration by expansion of air; refrigeration by throttling of gas; Vapor refrigeration system; steam jet refrigeration; Thermo electric cooling; adiabatic demagnetization.
Basic principles of operation of air refrigeration system, Bell-Coleman air refrigerator; advantages of using air-refrigeration in aircrafts; disadvantages of air refrigeration in comparison to other cold producing methods; simple air refrigeration in air craft; simple evaporative type air refrigeration in aircraft; necessity of cooling the aircraft.

UNIT II
Simple Vapor Compression Refrigeration System; different compression processes( wet compression, dry or dry and saturated compression, superheated compression); Limitations of vapour compression refrigeration system if used on reverse Carnot cycle; representation of theoretical and actual cycle on T-S and P-H charts; effects of operating conditions on the performance of the system; advantages of vapour compression system over air refrigeration system.
Methods of improving COP; flash chamber; flash inter cooler; optimum interstate pressure for two stage refrigeration system; single expansion and multi expansion processes; basic introduction of single load and multi load systems; Cascade systems.
Basic absorption system; COP and Maximum COP of the absorption system; actual NH3 absorption system; functions of various components; Li-Br absorption system; selection of refrigerant and absorbent pair in vapour absorption system; Electro refrigerator; Comparison of Compression and Absorption refrigeration systems; nomenclature of refrigerants; desirable properties of refrigerants; cold storage and ice-plants.

UNIT III
Difference in refrigeration and air conditioning; Psychometric properties of moist air (wet bulb, dry bulb, dew point temperature, relative and specific humidity of moist air, temperature of adiabatic saturation); empirical relation to calculate PV in moist air.
Psychometric chart, construction and use, mixing of two air streams; sensible heating and cooling; latent heating and cooling; humidification and dehumidification; cooling with dehumidification; cooling with adiabatic humidification; heating and humidification; by-pass factor of coil; sensible heat factor; ADP of cooing coil; Air washer

UNIT IV
Classification; factors affecting air conditioning systems; comfort air-conditioning system; winter air conditioning system; summer air-conditioning system; year round air conditioning. unitary air-conditioning system; central air conditioning system; room sensible heat factor; Grand sensible heat factor; effective room sensible heat factor.
Inside design conditions; comfort conditions; components of cooling loads; internal heat gains from (occupancy, lighting, appliances, product and processes); system heat gain (supply air duct, A.C. fan, return air duct); external heat gain (heat gain through building, solar heat gains through outside walls and roofs); solar air temperature; solar heat gain through glass areas; heat gain due to ventilation and infiltration.
Transport air conditioning; evaporative condensers, cooling towers; heat pumps.

References and Text books
·         Refrigeration and air-conditioning by C.P arora
·         Basic Refrigeration and air-conditioning by Annanthana and Rayanan, TMG
·         Refrigeration and air-conditioning BY Arora and Domkundwar, Dhanpat rai

Comments

  1. This is a wonderful site, with everything so well-described. Thank you for doing this!

    Refrigeration Equipment

    ReplyDelete
  2. thanks a lot for publishing the syllabus

    ReplyDelete
  3. Phoenix Heating Air Conditioning Service Phoenix Heater And Ac.
    heat pump cost

    ReplyDelete

Post a Comment

Popular posts from this blog

APRON MECHANISM IN LATHE

APRON MECHANISM IN LATHE Apron Mechanism: Apron is attached to the carriage and hangs over the front side of the lathe bed. It is useful in providing power and hand feed to both carriage and cross-slide. It is also used to provide power feed to the carriage during thread cutting through two half nuts. The construction of apron is shown in Fig. Fig - Apron Mechanism Construction Power is transmitted from the spindle to the lead screw and feed rod through the spindle gear and tumbler gear arrangement. A worm is mounted on the feed rod by a sliding key. The worm meshes with a worm gear on whose axis another gear G1 is attached. Gear G1 is attached to a small gear G2 by a bracket as shown in the diagram. Gear G4 is positioned to be in mesh with the rack gear always. Another gear G3 is mounted on the same axis of gear G4. The carriage hand wheel meant for longitudinal feed is attached to the gear G5 on the same axis. The gears G3 and G5 are always in mesh. The gear G

Boiler Mountings - Dead Weight Safety Valve

DEAD WEIGHT SAFETY VALVE Function:- A valve is placed upon a valve seat that is fixed upon a long vertical pipe having a flange at the bottom for fixing at the top of the boiler. Suspended at the top of the valve is the weight carrier that carries cast iron rings. The total weight must be sufficient to keep the valve on its seat against the normal working pressure. When the steam pressure exceeds the normal limit, it lifts the valve with its weight & the excess steam escape through the pipe to the outside. This valve is used only with stationary type of boilers. It is the most elementary type of safety valve. The objection to dead weight safety valve is the heavy weight that has to be carried. Image - Dead Weight Safety Valve Figure - Dead Weight Safety Valve

SCOPE OF CAD/CAM/CAE

SCOPE OF CAD/CAM/CAE Integrated CAD/CAM/CAE Software like Pro/Engineer, I-DEAS & CATIA help manufacturers optimize product concept early in Design process, enabling them to significantly improve product quality, while reducing product development time and cost. Moreover people having 3D CAD/CAM/CAE knowledge have better chances of growth, immediate employability after completion of course, graduation and chances of jobs abroad. As the market economy opens more and more it has become extremely competitive and with this state of economy, skilled people play the most important role in organization. Hence it becomes imperative on the part of top Tool Room Training centers and Engg. Colleges to especially look for new initiatives towards improving the skills and knowledge of students. An emerging trend of Engg. Education in Tool Room and the world is the rapid incrementation of CAD/CAM/CAE software as an essential part of curriculum. Pic - Scope of CAD/CAM/CAE The prim