Industrial HVAC Service for Louisville and surrounding areas
Today, in the 21st century, the term HVAC (Heating Ventilation and Air Conditioning) is no more alien to common
man. With increasing Global warming and degrading outdoor air quality due to pollution, the demand for Air
conditioning is escalating everywhere around the world. Therefore, we find HVAC systems at almost all places, be it
shopping mall, commercial complex, hotels, hospitals, offices or low/ high rise residential buildings. A decade ago,
HVAC systems were looked upon as ‘Luxury items’. But now, things are changing so quickly in a civilized society,
that, HVAC systems have become an essential part of building services.
A typical person in modern society spends
around 90% of day time indoors. So it is not surprising that providing a healthy, comfortable indoor environment has
become a vital factor in current economy.
In the industry HVAC and commercial world, Air Conditioning is known as HVAC (Heating Ventilation and Air
Conditioning) systems. Air conditioning means processing of air in an indoors environment to maintain Temperature,
Humidity, Air Quality (Cleanliness), Air motion and Ventilation. Temperature is controlled either by heating or cooling
the air, Humidity is controlled either by removing or adding the moisture to air, Air quality is maintained by filtration
which prevents entry of dust and particulate matter and supplies clean air and ventilation is achieved by supply of
sufficient fresh outside air. Sometimes Noise levels are also reduced by acoustic liners or sound attenuators.
To achieve all above processes, Industrial HVAC systems are available in large number of variations. Even though the objective is common i.e. to control the indoor environment, Industrial HVAC systems differ a lot according to different applications and ground
conditions.
So decision making is very critical function to select right type of Industrial HVAC system. Customers
must consider various factors like application, special requirements of the process, space available, Load variations,
operating reliability, Energy conservation and total cost etc. while selecting the equipment. Industrial HVAC systems are
broadly classified as All Air systems, All water systems (Hydronic), Air-Water system, Central systems, Unitary
systems, Single zone or Multi zone systems.
HVAC BASICS
An Industrial HVAC system maintains desired environmental conditions a space. In almost every application, many options are available to satisfy a client’s building program and design intent. In the analysis, selection, and implementation of these options, the design engineer should consider the criteria defined here, as well as project-specific parameters to achieve the functional requirements associated with the project design intent.
In addition to the design, equipment, and system aspects of the proposed design, the design engineer should consider sustainability as it pertains to responsible energy and environmental design, as well as constructability of the design. The integrated design process (IPD) includes members of the entire project team (e.g., owner, architect, construction team) in the decision process.
Industrial HVAC systems are categorized by the method used to produce, deliver, and control heating, ventilating, and air conditioning in the conditioned area.
Mechanical System Acronyms
| AC – Air Conditioning | HWS – Hot Water Supply |
| ACH – Air Changes per Hour | HVAC – Heating, Ventilation and Air Conditioning |
| ACU – Air Conditioning Unit | Hz – Hertz |
| AHU – Air Handling Unit | IR – Infrared |
| ASHRAE – American Society of Heating Refrigeration | kW – Kilowatt |
| and Air Conditioning Engineers | KWH – Kilowatt-hour |
| BAS – Building Automated System | LAT – Leaving Air Temperature |
| BMS – Building Management System | LEED – Leadership in Energy and Environmental |
| BTU – British Thermal Unit | Design |
| BTUh – British Thermal Unit per hour | LL – Low Limit |
| C – Celsius | LP – Low Pressure |
| CAV – Constant Air Volume | LPS – Low Pressure Steam |
| CC – Cooling Coil | LWT – Leaving Water Temperature |
| CFC – Chlorofluorocarbon | LWB – Leaving Wet Bulb |
| CFM – Cubic Feet per Minute | MA – Mixed Air |
| CHW – Chilled Water | MAT – Mixed Air Temperature |
| CHWP – Chilled Water Pump | MUA – Make Up Air |
| CHWR – Chilled Water Return | NC – Normally Closed |
| CHWS – Chilled Water Supply | NO – Normally Open |
| DB – Dry Bulb | OA, OSA – Outside Air |
| DDC – Direct Digital Control | OAI – Outside Air Intake |
| DP – Dew Point | OAT – Outside Air Temp |
| DX – Direct Expansion | PM – Preventative Maintenance |
| EA – Exhaust Air | PH – Preheat |
| EAT – Entering Air Temperature | PSI – Pounds per Square Inch |
| EER – Energy Efficiency Ratio | RA – Return Air |
| EF – Exhaust Fan | RF – Return Fan |
| EMS – Energy Management System | RH – Relative Humidity |
| EWT – Entering Water Temperature | RPM – Revolutions per Minute |
| F – Fahrenheit | RTU – Roof Top Unit |
| FCU – Fan Coil Unit | SA – Supply Air |
| FLA – Full Load Amps | SD – Smoke Detector |
| FPM – Feet per Minute | SF – Supply Fan |
| FPS – Feet per Second | T – Temperature or Thermostat |
| GPM – Gallon per Minute | V – Volts |
| HC – Heating Coil | VAV – Variable Air Volume |
Industrial HVAC Service - Indoor Air Quality
In Industrial HVAC Service environments Indoor Air Quality is of the utmost importance. Call Givens & Son Mechanical Services to have your system checked today!
Indoor air quality (IAQ) is the air quality within and around buildings and structures. IAQ is known to affect the health, comfort, and well-being of building occupants. Poor indoor air quality has been linked to sick building syndrome, reduced productivity, and impaired learning in schools.
IAQ can be affected by gases (including carbon monoxide, radon, volatile organic compounds), particulates, microbial contaminants (mold, bacteria), or any mass or energy stressor that can induce adverse health conditions. Source control, filtration, and the use of ventilation to dilute contaminants are the primary methods for improving indoor air quality in most buildings. Residential units can further improve indoor air quality by routine cleaning of carpets and area rugs.
Determination of IAQ involves the collection of air samples, monitoring human exposure to pollutants, collection of samples on building surfaces, and computer modelling of air flow inside buildings.
IAQ is part of indoor environmental quality (IEQ), which includes IAQ as well as other physical and psychological aspects of life indoors (e.g., lighting, visual quality, acoustics, and thermal comfort).
Indoor workplaces are found in many working environments such as offices, sales areas, hospitals, libraries, schools and preschool childcare facilities. At such workplaces, no tasks involving hazardous substances are performed, and they do not include high-noise areas. Nevertheless, employees may feature symptoms belonging to the sick building syndrome such as burning of the eyes, scratchy throat, blocked nose, and headaches. These afflictions often cannot be attributed to a single cause, and require a comprehensive analysis besides the testing of the air quality. Factors such as the workplace design, lighting, noise, thermal environment, ionising radiation and psychological and mental aspects have as well to be allowed for. A report assisted by the Institute for Occupational Safety and Health of the German Social Accident Insurance can support in the systematic investigation of individual health problems arising at indoor workplaces, and in the identification of practical solutions
