The Science of ComfortTM
Commonly used in both residential and commercial applications, a seven-day programmable thermostat is what sets the weekly schedule for the equipment it is controlling. We often see programmable thermostats connected to home furnaces, for instance; the device’s schedule is programmed for different days of the week to operate the fan within the furnace and any heating or cooling associated with it according to the homeowner’s needs.
Topics: Controls, HVAC Fundamentals, HVAC, Engineering
In the HVAC industry, it is common to hear about having to handle sensible and latent loads to condition a space. Since we tend to associate heating or cooling with a change in temperature, confusion can arise when multiple forms of heating are mentioned. In this post, we’re going to clarify the difference between sensible and latent heating and why the distinction is important in HVAC systems.
Topics: Fan Coils, Heat Transfer, Cooling Coil, Condensate, HVAC Fundamentals, HVAC, Engineering, Design Engineering
More than ever before, engineers, contractors and building owners are choosing chilled beams for their projects. This energy-efficient technology uses the heat transfer capabilities of air and water to provide heating and cooling in a space. But the concept of installing a water coil within the housing of the chilled beam raises some very important questions: will there be condensation, and are drain pans required?
Topics: Beams, Condensate, HVAC Fundamentals, HVAC, Engineering, Design Engineering
Laminar flow is a type of fluid motion characterized by smooth parallel layers, or laminae, that can slide relative to each other with little to no mixing. This is in contrast to turbulent flows, where chaotic changes in pressure and velocity can be observed as vortices, or eddies (reverse swirling currents), and where much more mixing occurs within the fluid.
Topics: Diffusers, HVAC Fundamentals, HVAC, Engineering, Critical Environments
Chilled beam systems use the heat transfer capabilities of water to provide sensible cooling to a space. As we’ve discussed previously on the blog, when the system is in cooling mode, the induction process facilitated by the chilled beam nozzles causes warmer room air to mix with the colder primary air, providing the space with supply air with temperatures at 62°F to 66°F – much warmer than the 55°F supply air provided by conventional cooling systems.
Topics: Beams, Displacement, HVAC Fundamentals, HVAC, Engineering
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