HVAC

How does an HVAC System work?

What is HVAC?

Heating, Ventilation & Air Conditioning (HVAC) is the technology of indoor and vehicular environmental comfort. Its goal is to provide thermal comfort and acceptable indoor air quality. 

Ventilating or ventilation (the V in HVAC) is the process of exchanging or replacing air in any space to provide high indoor air quality which involves temperature control, oxygen replenishment, and removal of moisture, odors, smoke, heat, dust, airborne bacteria, carbon dioxide, and other gases. Ventilation removes unpleasant smells and excessive moisture, introduces outside air, keeps interior building air circulating, and prevents stagnation of the interior air.

Individual Systems

In modern buildings, the design, installation, and control systems of these functions are integrated into one or more HVAC systems. For very small buildings, contractors normally estimate the capacity and type of system needed and then design the system, selecting the appropriate refrigerant and various components needed. For larger buildings, building service designers, mechanical engineers, or building services engineers analyze, design, and specify the HVAC systems. Specialty mechanical contractors then fabricate and commission the systems. Building permits and code-compliance inspections of the installations are normally required for all sizes of building.

District Networks

Although HVAC is executed in individual buildings or other enclosed spaces, the equipment involved is in some cases an extension of a larger district heating (DH) or district cooling (DC) network, or a combined DHC network. In such cases, the operating and maintenance aspects are simplified and metering becomes necessary to bill for the energy that is consumed, and in some cases energy that is returned to the larger system. For example, at a given time one building may be utilizing chilled water for air conditioning and the warm water it returns may be used in another building for heating, or for the overall heating-portion of the DHC network (likely with energy added to boost the temperature).

Basing HVAC on a larger network helps provide an economy of scale that is often not possible for individual buildings, for utilizing renewable energy sources such as solar heat, winter's cold, the cooling potential in some places of lakes or seawater for free cooling, and the enabling function of seasonal thermal energy storage.

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DHUBA DESALINATION PLANT
DHUBA - SAUDI ARABIA
EL TOR DESALINATION PLANT
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SHARJA INTERNATIONAL AIRPORT STP
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AL FILAYAH STP
RAS AL KHAIMAN - UAE
SHARMA COMPLEX SWRO
SHARMA - SAUDI ARABIA
SUEZ POWER STATION
SUEZ - EGYPT
BAHNA POWER STATION
DAKAHLEYA - EGYPT
DOHA METRO - RED LINE NORTH UNDERGROUND
DOHA - QATAR
FADHILI GAS PLANT RESIDENTIAL CAMP
JUBAIL - SAUDI ARABIA
GIZA NORTH 1500 MW COMBINED CYCLE POWER PROJECT
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JEDDAH HOSPITAL - 400 BED
JEDDAH - SAUDI ARABIA
KHURAIS NANOFILTRATION UNIT
KHURAIS - SAUDI ARABIA
KING FAHD UNIVERSITY OF PETROLEUM & MINERALS STUDENT HOUSING
DHAHRAN - SAUDI ARABIA
MOPCO FERTILIZER PLANT
QISM DAMIETTA - EGYPT
MSHEIREB DOWNTOWN DOHA - PHASE 4
DOHA - QATAR
MULBERRY HEIGHTS ETS & PUMP ROOMS
DUBAI - UAE
NEW ADMINISTRATIVE CAPITAL GOVERNMENT DCP - 01
CAIRO - EGYPT
RIYADH PP12 - MODULARIZATION WATER TREATMENT FACILITY
RIYADH - SAUDI ARABIA
BP KHAZZAN PROJECT
AD DHAHIRAH GOVERNORATE - OMAN
MHPS CCPP 500 MW
MUARA KARANG - INDONESIA
EAST PORT SAID SWRO
PORT FUAD - EGYPT
EL GALALAH SWRO
SUEZ - EGYPT
AL MAHSAMA DWTP
ISMAILIA GOVERNORATE - EGYPT
TERNIUM 5 MTY HOT STRIP MILL
PESQUERIA , MONTERREY - MEXICO
ARCELORMITTAL LONG PRODUCTS CANADA 130 TPH WALKING BEAM OVEN
CONTRECOUER WEST - CANADA
JUMEIRAH VILLAGE CIRCLE - DCP
JUMEIRAH VILLAGE CIRCLE - UAE

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valveIT is a leader in the valve and plant sector, supplying some of the biggest oil, gas, and water groups in the world. By working with selected partners, we deal with the highest quality valves for Water applications, Firefighting, Desalination & HVAC systems. As part of our project-oriented character we integrate an high range of services which perfectly fit our clients' specific requests. Beyond the valves from design to delivery.

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