Courese fantastic for load
estimation
Contents
• Basic Conce
pts
• Outdoor Design Conditions
• Indoor Design Conditions
• Cooling Load Components
• Cooling Load Components
• Cooling Load Principles
• Cooling Coil Load
• Heating Load Heating Load
• Software Applications
AIR CONDITIONING SYSTEM OVERVIEW
Cooling & heating load calculations are normally made to size HVAC (heating, ventilating, and air-conditioning) systems
and their components. In principle, the loads are calculated to maintain the indoor design conditions. The first step in
any load calculation is to establish the design criteria for the project that involves consideration of the building concept,
construction materials, occupancy patterns, density, office equipment, lighting levels, comfort ranges, ventilations and
space specific needs. Architects and other design engineers converse at early stages of the project to produce design
basis & preliminary architectural drawings. The design basis typically includes information on:
1) Geographical site conditions (latitude, longitude, wind velocity, precipitation etc.)
2) Outdoor design conditions (temperature, humidity etc)
3) Indoor design conditions
4) Building characteristics (materials, size, and shape)
5) Configuration (location, orientation and shading)
6) Operating schedules (lighting, occupancy, and equipment)
7) Additional considerations (type of air-conditioning system, fan energy, fan location, duct heat loss and gain, duct
leakage, type and position of air return system…)
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