What do football/soccer, basketball, ice hockey, boxing and concerts all have in common? HVAC. HVAC equipment and technicians have a much bigger hand in making major sporting events possible than you might realize. And we are proud to say that Greystone played a part in making FIFA World Cup 2022 possible as our sensors and…
Carbon monoxide is a colorless, odorless, tasteless gas produced by burning gasoline, wood, propane, charcoal or other fuel. Improperly ventilated appliances and engines, particularly in a tightly sealed or enclosed space, may allow carbon monoxide to accumulate to dangerous levels. Carbon monoxide is harmful when breathed because it displaces oxygen in the blood and deprives…
CO2 as it is used in building ventilation control is not a contaminant with a specific danger threshold not to be exceeded. Rather, it is an indicator of the outside air dilution rate of a space where the outside CO2 levels provide a baseline reference for outside air. Indoors CO2 levels will increase beyond this…
Carbon dioxide, also called CO2, is a colorless, odorless gas. You may have also seen carbon dioxide in its solid form through dry ice. As CO2 heats up, it goes right from solid to gas, so you can’t see liquid carbon dioxide. Carbon dioxide (CO2) is a greenhouse gas. This means that it causes an…
Particle pollution — also called particulate matter (PM) — is made up of particles (tiny pieces) of solids or liquids that are in the air. These particles may include dust, dirt, soot, smoke, drops of liquid. Some particles are big enough (or appear dark enough) to see — for example, you can often see smoke…
Condensation is what happens when water vapour changes from a gaseous to a liquid state. Condensation occurs when warmer moist air comes in contact with cold surfaces such as framing members, windows and other accessories, or the colder region within the insulation envelope (if moisture has penetrated the vapour retarder). Warm air, having the ability…
A cleanroom is an engineered space, which maintains a very low concentration of airborne particulates. It is well isolated, well-controlled from contamination, and actively cleansed. Cleanrooms are an important part of any laboratory — compared to the ambient outdoor air in urban areas, which contain 35 million particles per cubic meter, cleanroom environments offer just…
Humidity is the amount of water vapour in the atmosphere. Water vapour enters the atmosphere by evaporating from large bodies of water on the Earth’s surface such as lakes, oceans and seas. There are several ways to measure Humidity, but it is most often measured in terms of Absolute Humidity (AH), Relative Humidity (RH) and…
Greenhouses are indoor horticulture facilities that are optimized for growing certain crops. During flowering stage, high-wattage lights are needed which produce a significant amount of waste heat. Plants are watered frequently, and the soil medium is moist, so the heat from lights causes water to evaporate. Plants also naturally transpire. Consequently, the amount of…