Wind turbines that range in size from 100 kilowatts to several megawatts, where the electricity is delivered to the power grid and distributed to the end user by electric utilities or power system operators.

are the basic units of matter and the defining structure of elements.

is a major source of electricity generation through the use of cogeneration, gas turbines, steam turbines and machines.

are the detection devices, from sophisticated intelligent smoke detectors to simple manually operated break glass units

can include active systems as air-conditioning systems that provide cooling, a proper air distribution inside a zone, and control of humidification, and natural systems as convective cooling in open window, evaporative cooling in fountains.

sometimes called run-of-river, facility channels a portion of a river through a canal or penstock. It may not require the use of a dam.

generally contains two chambers. The first is used as a reference to compensate for changes in ambient temperature, humidity or pressure. The second chamber contains a radioactive source, usually alpha particle, which ionizes the air passing through the chamber where a current flows between two electrodes. When smoke enters the chamber the current flow decreases. This drop in current flow is used to initiate an alarm.

o This theory states that electrons flow from negative to positive.
o When more was known about the behavior of electrons, scientists discovered that electrons actually flow from negative to positive.

o are one of the most commonly used and cheapest type of air conditioners.
o To install one of these units, you need a space to make a slot in the wall, and there should also be some open space behind the wall.
o units are reliable and simple-to-install solution to keep a room cool while avoiding the costly construction of a central air system.

require a fire engine to pump water into the system. don't have pre-connected hoses and require firefighters to bring in the hose. In wet systems, there is always water in the pipes and can be used by anyone.

where electric current is used to energize equipment

are introduced as a hybrid system to combine both advantages of all-air and all-water systems. The volume of the combined is reduced, and the outdoor ventilation is produced to properly condition the desired zone. The water medium is responsible for carrying the thermal load in a building by 80-90% through heating and cooling water, while air medium conditions the remainder.

Indented for transport of goods, materials, equipment and vehicles. Their carrying load can vary between 2000 to 4500 kilograms. Most often their source of power are electric engines.

Small elevators that are used to transport food and other kitchen materials between several building levels. They are often used in hotels, restaurants and cruise ships.

It is literally a means or method by which something is secured through a system of interworking components and devices.

or Break Glass Call Point is a device which enables personnel to raise the alarm by breaking the frangible element on the fascia; this then triggers the alarm.

typically a large hydropower system, uses a dam to store river water in a reservoir. Water released from the reservoir flows through a turbine, spinning it, which in turn activates a generator to produce electricity. The water may be released either to meet changing electricity needs or to maintain a constant reservoir level.

These are an effective alternative to traditional wired fire alarm systems for all applications. They utilize secure, license-free radio communications to interconnect the sensors and devices with the controllers.
It is a simple concept, which provides many unique benefits and is a full intelligent fire detection system without the need for cabling.

The step-wheel track for the front wheels of the steps, and the trailer-wheel track for the back wheels of the steps, cause the steps to form a staircase as they move from under the comb plate.

works like a battery, storing the electricity generated by other power sources like solar, wind, and nuclear for later use. It stores energy by pumping water uphill to a reservoir at higher elevation from a second reservoir at a lower elevation. When the demand for electricity is low, a facility that stores energy by pumping water from a lower reservoir to an upper reservoir.

attempts to contain fires or slow the spread, such as by fire-resistant walls, floors, and doors.

is energy saving technology that eliminates wasted operation in air conditioners by efficiently controlling motor speed. Air conditioners maintain set temperature by cooling when room temperature rises above the set temperature and heating when the room temperature falls below the set temperature.

are devices that use various forms of technology to detect movement.

which incorporate video recorders that allow for data preservation and the ability to monitor footage at a later time. A DVR can be added to this system as well for additional storage and video retrieval or transmission

materials or substances which allow electricity to flow through it

can be forced systems by using devices such as window fan to allow air movement between outdoor and a single zone without changing in the thermal environment of the zone.

are externally similar to fan-coil units but internally different. An induction unit induces the air flow in a room through cabinet by using high-velocity airflow from a central air handling unit, which replaces the forced convection of the fan in the fan-coil

or suspended air conditioner typically used in commercial spaces or food establishments. It saves space and known for balance distribution of airflow

contain two central devices: the condenser, located outdoor, and the evaporator, located indoors. The two devices are connected by a conduit for refrigerant lines and wiring. This system solves some issues of small-scale single-zone systems since the location and installation of window, unitary or rooftop air conditioners may affect the esthetic value and architectural design of the building.

are used to provide considerable energy savings for large building under the extreme cold weather. A building of various zones can be conditioned by several individual heat pumps since each heat pump can be controlled according to the zone control. A centralized water circulation loop can be used as a heat source and heat sink for heat pumps

may be used for internal perimeter building protection. are mounted in close proximity to the glass panes and listen for sound frequencies associated with glass breaking.

is energy from the sun that is converted into thermal or electrical energy. It is captured in a variety of ways, the most common of which is with photovoltaic solar panels that convert the sun's rays into usable electricity. Aside from using photovoltaics to generate electricity, solar energy is commonly used in thermal applications to heat indoor spaces or fluids.

refers to energy derived from plant and animal sources.

It comprises the evaporator or cooling coil, filter, cooling fan and louvers or fins.

is the source of its power to generate electricity on a lighting fixture or any appliances.

which work in the same way as simple arrangement, except instead of the camera gaining its power from the monitor, both camera and monitor are powered separately through the mains.

Fixed-Base, Free-Standing Crane

These are typically solid and made of die-cast aluminium or steel. They are cleated with comb-like protrusions that mesh with the comb plates. The steps are linked by a continuous metal chain that forms a closed loop.

Escalators positioned side-by-side, moving in opposite directions.

W = 12R or W = I (IR)

there is a gearbox attached to the motor that drives the wheel and moves the ropes. Geared machines can reach speeds up to 500 ft./min. These models will have a middle-of-the-road cost in terms of initial investment, maintenance costs and energy consumption.

are positively charged particles found within atomic nuclei. Rutherford discovered them in experiments with cathode-ray tubes that were conducted between 1911 and 1919. Protons are about 99.86% as massive as neutrons.

Located on the elevator car itself, the safeties grab the hoistway rails when activated.

combine inputs from both optical and heat sensors and process them using a sophisticated algorithm built into the detector circuitry.
When polled by the control panel the detector returns a value based on the combined responses from both the optical and heat sensors. They are designed to be sensitive to a wide range of fires.

The energy is released by nuclear fusion (nuclei are fused together) or nuclear fission (nuclei are split apart).

a single zone which needs equipment located inside the zone itself, such as small houses and residential apartments.

other by a darkened chamber such that the light source does not fall on the photocell.
The passage of smoke into the chamber causes the light from the source to be scattered and fall on the photocell. The photocell output is being used to initiate an alarm.

The voltage forces the electrons to flow continuously in one direction through a closed circuit. This type of voltage is called Direct Current (DC) voltage. Batteries and DC generators produce DC voltage

used in the outdoor unit of split air conditioners is the coiled copper tubing with one or more rows depending on the size of the air conditioning unit and the compressor.

have one feature in common: they convert heat to electricity. Heat from the Earth. energy is accessed by drilling water or steam wells in a process similar to drilling for oil.

is a middle rank coal between subbituminous and anthracite. Bituminous usually has a high heating (Btu) value and is the most common type of coal used in electricity generation in the United States. appears shiny and smooth when you first see it, but look closer and you may see it has layers.

are typically fixed in one location or spot, and most need to be brought in and assembled at the site of the project. What fixed cranes lack in mobility, they make up for with the ability to lift heavier loads and reach even greater heights. These crane types are set in place for the duration of a project.

units provide a unique advantage in that they can be installed in locations where no wall or ceiling space is available so are often installed in cafeterias, convenience stores, large reception rooms, hotel foyers and comms rooms or server rooms

are tiny compared to protons and neutrons, over 1,800 times smaller than either a proton or a neutron. Electrons are about 0.054% as massive as neutrons, according to Jefferson Lab

are a series of pipes which connect a water supply to hose connections, basically an extension of the fire hydrant system. They are designed to provide a pre-piped water system for building occupants or the fire department.

The cranes are generally powered by electric motors, hydraulic power or internal combustion engines, but the rapid technological development will allow us to see another type of food in the future.

coordinates the fixture locations with switches/diffusers, and other elements

is defined as the rate at which charge flows through a surface (the cross section of a wire.

o is black in color and dull (not shiny), and has a higher heating value than lignite.

It removes all the dirt particles from the room air and helps supplying clean air to the room.

is a combustible black or brownish-black sedimentary rock with a high amount of carbon and hydrocarbons. It is burned and the heat given off is used to convert water into steam, which drives a turbine.

offers a boom that has a number of tubes that are fitted inside each other. Then hydraulic mechanisms extend or retract the tubes to length or shorten the boom.

A power-driven stairway consisting of steps attached to a continuously circulating chain, used for moving passengers up and down between floors. Also called moving stairway.

It houses components like the compressor, condenser, fan and expansion valve.

physical cabling is used to interconnect several call points and detectors, the signals from which are wired back to the main control unit.

is the force that is applied to a conductor to free electrons, which causes electrical current to flow. It is measured in volts or “V”. Current will flow in a conductor as long as voltage, the electrical pressure, is applied to the conductor

is the main product to come from oil. It is used as fuel for vehicles such as cars.

is considerably small unit used for heating and cooling coils, circulation fan, and proper control system. The unit can be vertically or horizontally installed. can be placed in the room or exposed to occupants, so it is essential to have appropriate finishes and styling.

don't use overhead hoisting machinery. Instead, these elevators lift a car by using a fluid-driven piston that is mounted inside of a cylinder. The necessary fluid has traditionally been oil-based but can be replaced with vegetable oil to decrease the environmental impact.

(also known as petroleum) is a fossil fuel formed from the remains of tiny sea plants and animals that died hundreds of millions of years ago. Once refined, it can be used to make products such as gasoline, diesel and jet fuel.

between components. This may consist of direct wiring to the control unit, or wireless links with local power supplies

▪ is an ordinary fan with three or four blades and is driven by a motor.
▪ The heat generated within the compressor has to be thrown out else the compressor will get too hot in the long run and its motor coils will burn leading to complete breakdown of the compressor and the whole air conditioner.

used for the installation of Security Cameras and Digital Video Recorders (DVRs) are Plug and Play Cables (Links to an external site.) (PnP) and RG59 Coax Siamese cable

is the same as a Conventional System except that each detector is given a set Address (usually by means of a dip-switch) and the Control Panel can then determine exactly which detector or call point has initiated the alarm.

used to detect motion. detector is one of the most common sensors found in household and small business environments. It offers affordable and reliable functionality.

A bank of two or more escalators, with differing directions.

is energy in moving water. People have a long history of using the force of water flowing in streams and rivers to produce mechanical energy.

is usually a copper capillary tubing with several rounds of coils. is used which is operated electronically automatically. The high pressure and medium temperature refrigerant leaves the condenser and enters the expansion valve, where its temperature and pressure drops suddenly.

is a mechanism that uses a series of simple machines to both raise and lower objects, and they also move horizontally.

emits microwaves from a transmitter and detects any reflected microwaves or reduction in beam intensity using a receiver. The transmitter and receiver are usually combined inside a single housing (monostatic) for indoor applications, and separate housings (bistatic) for outdoor applications. To reduce false alarms this type of detector is usually combined with a passive infrared detector, or Dual Tec brand or similar alarm.

will have hoses so building occupants can try and extinguish fires. are becoming less common with the increase of sprinkler systems being installed

These indicate an alarm condition. Most commonly, these are bells, sirens, and/or flashing lights. Alerting devices serve the dual purposes of warning occupants of intrusion, and potentially scaring off burglars. These devices may also be used to warn occupants of a fire or smoke condition.

are important in providing occupants of buildings prompt warning if a fire occurs. Systems that are not properly installed or maintained may cause unwanted alarm activations.

are used to carry large volumes of heavy materials, like coal or minerals. Instead of a hook at the end, bulk-handling cranes have a specialized hook that utilizes a grabbing mechanism and a bucket to grab, hold, and lift materials.

o This theory states that electrons flow from positive to negative.
o Benjamin Franklin theorized this when very little was known about electricity. It states that an invisible fluid known as electricity tended to flow through a wire from the positive to the negative

o Ionization
o Light Scattering
o Light Obscuring

The flow of free electrons in the same general direction from atom to atom is referred to as current and it is measured in amperes (“amps” or “A”).

When we look at the flow of electricity, we need to look at its characteristics. There are three main characteristics of electricity

can either work on a fixed temperature basis, where it will trigger an alarm if the temperature exceeds a pre-set value or they can work on the rate of change in temperature.

Commonly used in the construction of tall buildings, tower cranes offer amazing lifting capabilities. Due to their size, tower cranes are equipped with an operating cab that controls the entire crane.

Inclinations of 30° to 35° are the international standard for escalators

This is the structure supporting the handrail of the escalator and can be made of metal, sandwich panels or glass.

A crane that is manually driven or operated without the use of gasoline and motor.

is a modern analytics program that identifies and authenticates a specific person by their facial features.

is a copper coil made of number turns of the copper tubing with one or more rows depending on the capacity of the air conditioning system.

also known as 24-hour zones (which are on at all times).

are typically found in industrial environments. Its name comes from the fact that it resembles a bridge supported by two steel beams that straddle the workload, with the hoist (lifting mechanism) traveling along the bridge part of the crane.

The restriction to the flow of electrons through a conductor is called resistance and it is measured in ohms and abbreviated “W”, the Greek symbol Omega.

Escalators moving in one direction are 'stacked', minimising space requirements.

devices are mounted on barriers and are used primarily to detect an attack on the structure itself.
The technology relies on an unstable mechanical configuration that forms part of the electrical circuit. When movement or vibration occurs, the unstable portion of the circuit moves and breaks the current flow, which produces an alarm. The medium transmitting the vibration must be correctly selected for the specific sensor as they are best suited to different types of structures and configurations.

Voltage forces electrons to flow first in one direction, then in the opposite direction, alternating very quickly.

clean and separate crude oil into various fuels and by-products

are another version of the bridge crane. These types of cranes are permanently installed over a workstation and typically used for repetitive tasks. It is typically mounted on either a wall or floor-mounted pillar with a moveable hoist and may have some additional movement.

help changing the angle or direction in which the air needs to be supplied into the room as per the requirements.

smoke interferes with a light beam between a light source and photocell. The photocell measures the amount of light it receives.
The variation in photocell output, is being used to initiate an alarm. This type of detection can be used to protect large areas with the light source and photocell positioned some distance apart.

the car is raised and lowered by traction steel ropes or belts on a pulley system.

is the "brain" of the fire detection and alarm system. It is responsible for monitoring the various alarm "input" devices such as manual and automatic detection components, and then activating alarm "output" devices such as horns, bells, warning lights, emergency telephone dialers, and building controls. It is the central hub for all of the detector signals to be wired to and provides a status indication to the users. The unit can also be set up to simulate an alarm for use in routine Fire and evacuation drills, so all staff knows what action to take in the event of a real fire.

is a source of energy that will eventually run out. Most sources of non-renewable energy.

are mounted on crawlers or tires and offer greater mobility than standard cranes. Some mobile cranes are even able to be driven on the highway. Their ability to navigate around job sites and carry large amounts of weight makes mobile cranes a very popular addition to many projects.

Devices which detect intrusions. may be placed at the perimeter of the protected area, within it, or both. can detect intruders by a variety of methods, such as monitoring doors and windows for opening, or by monitoring unoccupied interiors for motions, sound, vibration, or other disturbances.

A variant of the overhead crane. It is supported by two a-frame steel legs and is typically built on a track.

Modern elevators use friction brakes: a pair of shoes that apply equal and opposite pressure to a drum, pulley or disc mounted on the motor shaft.

consist of wires that carry pulses of electric current to provide a non-lethal shock to deter potential intruders.

a tower crane with tie-ins or guys attached to the tower to permit the crane to be erected or climbed to greater than the maximum free-standing height

is the fundamental equation for electricity and governs the vast majority of electrical work that we do. The law states that electrical current in a circuit or conductor will always be proportionate to the voltage across the conductor or circuit, and inversely proportional to the total resistance.

(also known as fossil gas) is a non-renewable fossil fuel formed from the remains of tiny sea plants and animals that died 300-400 million years ago. Approximately 90% is composed of methane, but it also contains other gases such as propane and butane.

is the form that oil is in when it is first removed from the ground - we cannot use crude oil as an energy source until it has been refined.

heated and cooled water is distributed from a central system to conditioned spaces. This type of system is relatively small compared to other types because the use of pipes as distribution containers and the water has higher heat capacity and density than air, which requires the lower volume to transfer heat.

sucks the hot and unclean air from the room and supplies cool and clean air back.

The gearless machine consists of a motor, traction sheave and brake. The sheave drives the cables attached to the elevator car and counterweight.

Microprocessor-based controllers are the brains of the system, controlling all elevator functions based on data received from multiple subsystems, components and sensors.

The "brain" of the system, it reads sensor inputs, tracks arm/disarm status, and signals intrusions. In modern system, this is typically one or more computer circuit boards inside a metal enclosure, along with a power supply.

The unit of electric power

have the wheel attached directly to the motor. These models can reach speeds up to 2,000 ft./min. These models have a high initial cost investment and average maintenance costs. They are, however, more energy-efficient than geared traction elevators.

The highest rank of coal. It is a hard, brittle, and black lustrous coal, often referred to as hard coal, containing a high percentage of fixed carbon and a low percentage of volatile matter.

has combined devices in an air handling unit which contains supply and return air fans, humidifier, reheat coil, cooling coil, preheat coil, mixing box, filter, and outdoor air.

when nuclei of atoms are split apart. This is the method used by nuclear plants to generate electricity.

provides a fix heating or cooling by a fixed power with the compressor running at a fixed speed. The compressor has to start and stop when required. On the other hand inverter aircon have a controllable compressor that provides the exact amount of heating and cooling as needed.

Wind turbines that are erected in large bodies of water, usually on the continental shelf. Offshore wind turbines are larger than land-based turbines and can generate more power.

are known also as CO fire detectors are electronic detectors used to indicate the outbreak of fire by sensing the level of carbon monoxide in the air.

are uncharged particles found within all atomic nuclei (except for hydrogen). A neutron's mass is slightly larger than that of a proton.

moves courtesy of a chain connected to the main drive gear by a series of pulleys. It is generally made from a blend of synthetic polymers and rubber, and is designed to be very durable.

are made up of two parts: the carrier (truck), and the boom (arm). Due to their unique build, they're able to travel easily on the road with no unique set up or transportation equipment.

The structure that bridges the lower and upper landings, and carries the straight track sections. Steel or concrete supports connect the ends of the truss to the top and bottom landing platforms.

detect the presence of an intruder by transmitting visible or infrared light beams across an area, where these beams may be obstructed. To improve the detection surface area, the beams are often employed in stacks of two or more.

defined as a complete conducting path that carries current from a source of electricity to and through some electrical device (or load) and back to the source.

is a gas that comes from natural gas and petroleum (oil). It is a clean-burning fuel that has a lot of different uses, including:

o Making products and fuelling industry
o Heating barns and operating farm equipment
o Fuelling hot air balloons
o Heating homes
o Fuelling barbeques and appliances
o Fuelling machinery

individual supply air ducts are provided for each zone in a building. Cold air and hot (or return) air are mixed at the air handling unit to achieve the thermal requirement of each zone. A particular zone has its conditioned air that cannot be mixed with that of other zones, and all multiple zones with different thermal requirement demand separate supply ducts

o Detectors
o Control Panel/Unit
o Alarm Devices
o Wiring or Circuitry

These contain the curved sections of the tracks, in addition to the gears and motors. The floor plate provides space for users to stand before stepping onto the moving steps. The comb plate has a series of cleats (like the teeth of a comb), that mesh with matching cleats on the edges of the steps and minimise the gap between the stair and the landing.

Large companies use this system to control employee by identifying an authorized individual and allowing that person access to a restricted area. It also improves employee productivity by preventing unrestricted traffic to different areas. It can also track and recall the employee information at a later time through its information data base.

The crane is mounted on an undercarriage that has four rubber tires and is designed to be use off road. The outriggers can extend vertically and horizontally to stabilize and level the crane when it is lifting a large load.

The thermal energy transfer medium through the building delivery systems is air. All-air systems can be sub-classified based on the zone as single zone and multizone, airflow rate for each zone as constant air volume and variable air volume, terminal reheat, and dual duct

is a system that holds the door for intruders and prevents them from accessing the resources by verifying them as unauthorized persons on the basis of biometrics authentication. scans the person and matches his/her biometric data with the previously stored information in the database before he/she can access the secured zone or resources.

can be used to extinguish small fires in the home, caravan, boat or garage. They can also be used to wrap around a person whose clothes have caught alight.

is one of the most widely used type of the air conditioners. The major reasons behind the popularity if split air conditioner are their silent operation and elegant looks.

is a system in which all elements - from the cameras to the recording devices - are directly connected in order to keep the video from being broadcast over public airwaves and on a closed circuit (hence the name).

often referred to as clean energy, comes from natural sources or processes that are constantly replenished. For example, sunlight, water or wind keep shining and blowing, even if their availability depends on time and weather.

any of various substances that block or retard the flow of electrical or thermal currents.

when nuclei of atoms are combined or fused together. This is how the Sun produces energy.

is an active fire protection method, consisting of a water supply system, providing adequate pressure and flowrate to a water distribution piping system, onto which fire sprinklers are connected.

Rubber, glass and porcelain are considered good insulators.

A cooler wire has less resistance than a warmer wire. Cooler particles have less kinetic energy, so they move more slowly. Therefore, they are less likely to collide with moving electrons in current.

▪ most important part of the any air conditioner.
▪ It compresses the refrigerant and increases its pressure before sending it to the condenser.

The Father of the Air Conditioner

consists of an air handling unit, a heat source and cooling source, distribution ductwork, and appropriate delivery devices. can be wholly integrated where heat and cooling sources are available or separate where heat and cooling source are detached.

portable or movable apparatus used to put out a small fire by directing onto it a substance that cools the burning material, deprives the flame of oxygen, or interferes with the chemical reactions occurring in the flame.

Also known as a crane vessel or crane ship, these floating cranes are used for projects at sea, such as ports or oil rigs. These cranes have a rich history—they have been used since the Middle Ages and, with the help of continuous technological advancements, have helped many generations of people.

for air-water systems are similar to that of all-water systems except that the supply air and the conditioned water are provided to the desired zone from a central air handling unit and central water systems (e.g., boilers or chillers). The ventilation air can be separately delivered into space or connected to the fan-coil units. The major types of fan-coil systems, are 2 pipes or 4-pipes systems.

is a set of interconnected devices that is aimed to protect an object, usually a facility, against intruders and to notify the owner or/and the monitoring station/center of any violation of the protected zones. Depending on the requirements and financial possibilities, it can be a simple alarm system suitable for a basic protection of a home/apartment, or a more advanced structure, which in addition to the basic functions will greatly improve the life comforts of the users.

is a lock operated by a keycard, a flat, rectangular plastic card with identical dimensions to that of a credit card or American and EU driver's license. The card stores a physical or digital pattern that the door mechanism accepts before disengaging the lock.

Positioned at the bottom of the hoistway, buffers can absorb and dissipate the energy of a descending elevator.

Designed to carry people between building floors. Their capacity is determined by the need of the specific building and it can vary between 5 and 25 people.

each detector effectively incorporates its own computer which evaluates the environment around it and communicates to the Control Panel whether there is a fire, fault or the detector head needs cleaning.

At its core are a pair of chains looped around two pairs of gears.

continuously monitors car speed. If the car exceeds its maximum rated speed, flyweights inside the governor spring outward, causing the governor to initiate action: first engaging the machine brake, then engaging the car safeties.

A single zone will require a complete, single package of heating system which contains heat source and distribution system. Some examples include portable electric heaters, electric resistance baseboard radiators, fireplaces and wood stoves, and infrared heaters.

V = I (current) x R (resistance)

Garbage
Wood
Crops
Alcohol Fuels
Landfill Gas

which deals with electrical circuits that involve active electrical components such as vacuum tubes, transistors, diodes and integrated circuits, and associated passive interconnection technologies.

detecting infrasound, or sound waves at frequencies below 20 hertz. Sounds at those frequencies are inaudible to the human ear.

aka brown coal, is the lowest grade coal with the least concentration of carbon

Natural gas is a major feedstock for the production of ammonia, via the Haber process, for use in fertilizer production.

also called lift, is a car that moves in a vertical shaft or steel frame to carry passengers or freight between the levels of a multistory building

Single small wind turbines below 100 kilowatts that are used to directly power a home, farm or small business and are not connected to the grid.

which consist of a camera (or cameras) connected to a monitor by a single coax cable. In a simple system, the cameras gain their power from the monitor.

is a multiple zone, which considers an adaptation of single zone system. This can be performed by adding heating equipment, such as hot water coil or electric coil, to the downstream of the supply air from air handling units near each zone

Used on construction sites to vertically transport materials and/or passengers. They are most commonly powered by diesel engines or electric motors that rotate a drum around which a wire rope is wound.

Small devices, typically wall-mounted, which function as the human-machine interface to the system.

refers to the process of creating electricity using the wind, or air flows that occur naturally in the earth's atmosphere. Modern wind turbines are used to capture kinetic energy from the wind and generate electricity.