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International Automotive HVAC and Engine Cooling Professionals
 

HVAC Syllabus, Day one, AM

Initial technical survey; Introduction; HVAC history; Hardware; Design procedure outline; Design fundamentals; Basic heat transfer equations and thermodynamic principles; Begin AC model roadmap; Specify conditons; Body leakage curve; Psychrometric concepts; Air enthalpy; Dry and wet bulb temperatures; Specific humidity; Determine evaporator duty; Select evaporator; Determine refrigerant flow; Determine AC compressor requirements at constant entropy; Evaporator and compressor performance curves; Ideal reverse Carnot cycle (PH diagram); COP (coefficient of performance); Problem set 1.

HVAC Syllabus Day one, PM

Front end system resistance to air flow curve; Condenser fan curve operating point; Determine condenser duty, superheat and subcooling; Condenser performance curve; Air flow requirements; Fan size; Complete first road map model; Investigate additional conditions; Sizing of flow devices; Desiccants; Plumbing suction and discharge lines; Air distribution system; Blower wheel and motor; Positive and negative pressure coefficients; Problem set 2.

HVAC Syllabus Day two, AM

AC outlets: Heater outlets; Defrost and demist outlets; CFD airflow analysis; Spreading factor; Target velocity; Temperature and plume area at the target; Defroster design guideline; Exhausters; Negative pressure coefficients; NTU; Heater design; Coolant pump; Heater performance curves air and coolant side; Heater overall, outside and inside heat transfer coefficients; LMTD, Reynolds number; Effectiveness; Performance variables; Engine spark strategy; Corrosion and fouling; Controls, manual and automatic; Blend air linearity curve; Durability concepts; Warranty; Refrigerants; EPA driving cycle; OEM-Supplier responsibilities; Development- Laboratory equipment; Development plan; Functional objectives; Determine body leakage and blower curves; Problem set 3.

HVAC Syllabus Day two PM

Development- Condenser air flow; Fan and shroud characteristics; Fan design; Fan selection; Determination of mass air flow through condenser; Non-uniformity correction to supplier performance curves(evaporator, condenser, fan, blower, compressor, heater; Front end system resistance; Viscous drives; Seals; Charge determination; Superheat determination; Duct and outlet balance; Condensate freeze up, water carry over and odor; Hot soak and cooldown; Highway to extended idle; Cold soak and warm up; Field trips; Subjective juries; Durability analysis; Refrigerant Quality; Review and final technical survey.