Reversed the ref cycle in the system to reject the heat from the system to the indoors creating a heating effect.
Applicable to residential and commercial applications Duct free heat pumps are available with some of the highest energy efficiencies available
Fuel fired Boilers gas furnaces
Boiler use fuel to created hot water stema piped into coil connected to air handlers Used to create forced hot air that circulates thorugh the system’s ductwork
Boilers: res and commercial applications
Commonly found in residential applications,
Electrical resistance heating
converts electricity to heat
Mostly commercial applications
SYSTEM DESCRIPTIONS
DX Systems
SYSTEM
DESCRIPTION
USES
DX systems
Can be either water or air cooled systems that run on refrigerant.
Split systems
Made up of two components: the condensing unit that goes outside the building and an air handler that goes inside.
Ideal for: warehouses, business, malls and large department stores
Package units
Package units come packaged with all components necessary for use. They can be used by gas/ electric , electric only, heat pump or water source heat pump
Duct Free Systems
Can complement a ducted system and have numerous potential applications. They can be installed where ducted systems cannot go , saving on labor costs. Check out the advantages of the Daikin Ductless Systems that come both as a VRV or non VRV application...
Retrofit add-ons to spaces with non ducted heating systems, room additions, small awkward spaces, perimeter cooling for office buildings, classrooms, additional cooling for restaurant kitchens, small offices nested in large industrial spaces such as arenas, warehouses, and auditoriums
PTAC units
Stands for Package Terminal Air Conditioner, it is a self contained air conditioning system Many are designed to go through a wall having vents and heat sinks both inside and outside. Can be gas fired or electricity powered and are used to heat or cool a single living space.
hotels and apartments
Chilled water systems
SYSTEM
DESCRIPTION
USES
Chilled water systems
Chilled water and cooling tower plants
Here the entire air conditioner is situated on the roof or behind a building. It cools water to between 45F and this water is then piped throughout the building and connected to air handlers where needed.
Ideal for:warehouses, business, malls and large department stores
Chillers
Chillers are precision machines. The accuracy of their selection and maintenance are crucial for efficiency. Engineers are usually needed to evaluate the application’s cooling needs and to specify optimal equipment needed. Fully chilled water is used to cool and dehumidify the air. In some cases waste heat from chillers is used as a heat source Most chillers are designed for indoor operation but a few are weather resistant.
mid – to large size commercial industrial and institutional facilities.
Cooling Towers
Energy efficiency can be improved significantly in large systems with the introduction of a cooling tower. The cooling tower creates a stream of lower temperature water that runs through a heat exchanger and cools the hot coils of the air conditioner. Cooling towers come in all shapes and sizes but work on the same principle more…
large office buildings, hospitals schools , in fact all commercial institutions- typically use one or more cooling towers as part of their air conditioning systems.
IAQ COMPONENTS
PART
DESCRIPTION
USES
Dehumidifiers
The dehumidifier is an air conditioner with hot and cold coils . The moisture in the air which is drawn by a fan ,condenses – and gets reheated back to its original temperature and evaporates .
Helps keep indoor humidity at a comfortable level, reduce bacterial growth, prevent sick building syndrome Ideal for hospitals, nursing homes, commercial buildings
Electrostatic filters Electronic air cleaners
Uses static electricity to trap the contaminants Electrically generated static electricity sapping the dust and air borne particles
Trap air borne contaminants such as smoked filled environments such as bars, heavily populated commercial spaces. For residential use too odors ect
Kill bacteria and other air orne contaminants and help as prevent the growth of micro organisms
Hepa filters
A very thick very fine filter placed in the return air side of the system.
Used a lot for residential applications traps air borne dust and contaminants
DX SYSTEM COMPONENTS
Electric Heat Pumps
Are a heating and cooling option for ducted of rduct free configuations split systems run on electricity. Unlike natural fuel buring heatin equipment heat pumps reverserse the refrigeration cycle to reject the heat indoors creating a cooling effect . It uses electricity to heat or cool your space according to season fluctuations.
Condensing unit
Outdoor component for the split system.The heat rejection side of the split system, consists of a coil in which there is fan that blows air through the coil removing the heat from the system.
Air handlers
The inside part of a split system that blows the air through the coil and throughout the building
Furnace
A heat exchanger/ air handler combination that blows warm air through the building.
Compressor
The heart of the system that pumps the refrigerant through
Cooling coil
Cold refrigerant pumped through the coil where the system fan blows oert ehcoild sending cold through the space
