HVAC Design principles to reduce heat gain

HVAC Design process needs skills of HVAC design engineers to provide ambient air conditioning to the occupants. This means that a design that works brilliantly in one climate could be completely inappropriate in another, so the context of HVAC Design Engineering is extremely important. A successful and HVAC design is one that is context-appropriate in terms of the  life of a building and changing climate

Green HVAC
Green HVAC

Through some of the HVAC design principles building envelope can be adjusted to climate change, particularly with respect to the energy performance and thermal comfort.

  • Thermal discomfort and overheating can be attributed in large part to direct solar-heat gains through windows. HVAC Design Engineer can reduce the glazing percentage on elevations with high sun exposure (e.g., south, east, and west in the northern hemisphere).
  • For existing buildings, vision glazing can be replaced with insulated spandrel panels. A quick and cost-effective fix for existing windows that may be single glazed and/or uncoated is to add a thin film that provides solar control. HVAC Design Engineers may apply solar-control glass coatings to significantly cut down the total solar energy that is transmitted through transparent glazing
  • By using electrochromic glass in the windows, HVAC Design Engineers can also lessen the solar impact
  • HVAC Design Engineers can optimize thermal performance by using insulation whenever possible on walls and roofs.
  • Thermal mass has a very important impact on the thermal performance of buildings as it helps temper the diurnal temperature swings dynamically, which in turn reduces overheating and could help achieve an acceptable level of internal comfort and reduced energy use.
  • HVAC Design Engineers can also use thermal mass  to use phase change materials (PCMs), which provide a similar effect but can be easily implemented into drywall, PCMs use a building’s excess heat to melt until the PCM is in a liquid state, and when the internal air temperature drops, the PCM releases the stored latent heat back to the space and resolidifies. PCMs can also be used to upgrade existing buildings because they are relatively thin, easy to install, and cost-effective.
  • Green walls/roofs and living façades also can help absorb carbon dioxide as they photosynthesize, which helps reduce the overall embodied carbon of a building. Green walls and roofs can also help lower the building’s cooling loads by adding to the overall insulating performance of the building envelope as it creates a better thermal buffer.

MG Cooling Solutions, an HVAC Design Company, follows all the global codes and standards as set by ASHRAE to deliver successful HVAC projects.

 

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