Cooling Systems

• The Ministry of Higher and secondary special education the republic of Uzbekistan
• ANDIJAN MACHINE BUILDING INSTITUTE
• 3 course 327-19
• student Niyazov Shavkatbek

• INDEPENDENT
• WORK

HEATING AND COOLING SYSTEMS

Fuel Types:

• Fuel Types:
• Sun
• Natural gas
• Electricity
• High pressure city steam

• HEATING SYSTEMS

Sun

• Sun
• Begin design with an assortment of solar heating possibilities

• HEATING SYSTEMS

Natural Gas

• Natural Gas
• Second most common fuel for heating

• HEATING SYSTEMS

Electricity

• Electricity
• Lowest installation cost
• More expensive than gas

• HEATING SYSTEMS

High Pressure City Steam

• High Pressure City Steam
• By-product – exhaust steam generates electricity

• HEATING SYSTEMS

Gas – Fired Heaters

• Gas – Fired Heaters
• Semi outdoor locations only
• Can be used inside for warehouses etc if vented

• HEATING SYSTEMS

Warm Air Heating

• Warm Air Heating
• First appeared in 1900
• Oil, gas or electric
• Forced air – provisions for adding an outdoor compressor and condensing unit for cooling

• HEATING SYSTEMS

Warm Air Heating

• Warm Air Heating
• System burns gas, oil or heats electrical coils inside a closed chamber – heat exchanger – inside furnace
• Large blower inside the furnace compartment forces cool air across the hot outer surface of the heat exchanger – heating the air
• Fans move the heated air through a system of supply ducts located inside the walls and between floors and ceilings

• HEATING SYSTEMS

Warm Air Heating

• Warm Air Heating
• Supply registers – equipped with dampers – inside the ducts balance and adjust system by controlling airflow
• Damper vanes disperse air, controlling direction and velocity

• HEATING SYSTEMS

Warm Air Heating

• Warm Air Heating
• Separate system of exhaust ducts draws cool air back through the return grills to be reheated and re-circulated
• Return grills are generally located near the floor, on walls or the ceiling

• HEATING SYSTEMS

Mechanical cooling systems originally a separate unit to be used in conjunction with heating equipment

• Mechanical cooling systems originally a separate unit to be used in conjunction with heating equipment
• Currently integrated into HVAC systems

• COOLING SYSTEMS

Cooling accounts for 20% of energy use in the U.S.

• Cooling accounts for 20% of energy use in the U.S.
• 40% in the southern states

• COOLING SYSTEMS

Air Conditioning

• Air Conditioning
• The treatment of air so that it’s temperature, humidity, cleanliness, quality and motion are maintained as appropriate for the building’s occupants, a particular process or some object in the space

• COOLING SYSTEMS

Design Strategies for Cooling:

• Design Strategies for Cooling:
• Relationship with the building form and day lighting decisions
• Number and location of openings
• Utilization of natural ventilation

• COOLING SYSTEMS

Process of Air Conditioning:

• Process of Air Conditioning:
• Fan sucks warm air indoors across a series of coils containing refrigerants and blows it back into the room
• Refrigerant absorbs heat in the evaporator and then exhausts it outside through a system of fans and coils in the condenser
• When indoor air is cooled – also dehumidified

• COOLING SYSTEMS

Process of Air Conditioning

• Process of Air Conditioning

• COOLING SYSTEMS

Fans

• Fans
• Used in small buildings
• Person perceives a decrease of 1 degree Fahrenheit for every 15 feet per minute increase in the speed of air past the body

• COOLING SYSTEMS