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  • WORKSHOP ON HEATING, VENTILATION & AIR CONDITIONING & REFRIGERATION

WORKSHOP ON HEATING, VENTILATION & AIR CONDITIONING & REFRIGERATION


Venue : Mechanical Engineering Lab-LOT 35, Lincoln University College

Date : 07th June 2018

Time/Duration : 10 lectures in total, with two Lectures of each 2 hours, on weekends i.e. on Saturdays & Sundays.

Objective


To educate participants on designing aspects of Air-Refrigerating unit as below:

• Automotive Cabin Cooling system;
• Fan Coil Units (FCU)-Window AC & Split Cooling units;
• Cold Storage Freezer.

Workshop Topics


1. INTRODUCTION TO AIR CONDITIONING & REFRIGERATION SYSTEM:
   a. Highlights on various applications
   b. Cooling cycles involved
   c. Segregation of cooling circuit & analyze
   d. Types and function of involved equipments

2. HEAT LOAD CALCULATION USING E-20 FORM:
   a. Sensible and latent heat
   b. Heat load types
   c. Correction factors
   d. Understand to calculate space heat load and CFM

3. MINIMUM VOCABULARY TO COOLING SYSTEM:
   a. Heat capacity ratio
   b. Enthalpy
   c. Entropy
   d. Heat transfer modes
   e. Discussion on various thermal formulae and to learn when to use it.

4. PSYCHROMETRIC CHART CALCULATION:
   a. Dry bulb temperature
   b. Wet bulb temperature
   c. Dew point temperature
   d. Humidity
   e. Apparatus dew point
   f. By-pass factor
   g. Humidification & Dehumidification

5. VAPOUR COMPRESSION CYCLE - R134A & R12:
   a. Dryness fraction concept
   b. COP and Refrigerating capacity
   c. VC cycle example practice with dry saturated vapour after compression
   d. VC cycle example practice with sub-cooling of refrigerant

6. TYPES OF HEAT EXCHANGERS USED IN COOLING SYSTEM:
   a. Tube-Fin heat & Bar-Plate heat exchanger’s areas of application
   b. Benefits and suitability
   c. Manufacturing aspects
   d. Coolers design input sheet review

7. METHODS TO CALCULATE SIZES OF HEAT EXCHANGERS - CONDENSER:
   a. Log Mean Temperature Difference & effectiveness - method & formula
   b. Graphs and size validation
   c. Understanding with suitable case study on condenser sizing

8. SOFTWARE HANDS-ON TO CALCULATE SIZES OF CONDENSER AND EVAPORATOR:
   a. Case study of condenser on UniLAB-Coil for home air-Conditioning
   b. Case study of direct expansion evaporator on UniLAB-Coil for passenger Vehicle

9. UNDERSTANDING CAPILLARY TUBE’S SIZES AND INCURRED PRESSURE DROP:
   a. Hands-on practice on Danfoss’s software to calculate bore size and length
   b. Validation on estimated sizes

10. EXPERIMENT TO VALIDATE LAB TEST RIG - UNDER 5 TON CAPACITY:
   a. Practice on experimental rig to find COP and cooling capacity
   b. Size validation of heat exchangers & capillary from case study studied in class no. 8

Target Group


Academic students and Professionals;

Qualifications Branches Target Participants

Diploma, Bachelors & Masters

Mechanical & Maintenance Engineering

Fresher & Industrial Professionals

HVAC & Electrical Engineering

Production Engineering

Automobile Engineering

Aircraft Engineering

Outcome


Better understanding of the various cooling system and may pursue careers in trading or manufacturing of such units & refrigerating parts.