Heat recovery ventilation
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 Heat recovery ventilation, often with an earth-to-air heat exchanger, is essential to achieve German Passivhaus standards. |
Heat recovery ventilation, also known as HRV, mechanical ventilation heat recovery, or MVHR, is an energy recovery ventilation system using equipment known as a heat recovery ventilator, heat exchanger, air exchanger, or air-to-air heat exchanger which employs a counter-flow heat exchanger (countercurrent heat exchange) between the inbound and outbound air flow.Most HRVs are balanced ventilators in which heat is transferred from one airstream to another. These balanced HRVs are often called air-to-air heat exchangers (AAHXs). Central-exhaust heat-pump water heaters are HRVs but they are not AAHXs because they transfer heat from one airstream into water, not between two airstreams. Another term often used is energy recovery ventilator (ERV). All HRVs transfer sensible heat from one airstream to another or to water. If latent heat is also transferred, then an HRV can be called an ERV. While there are specific differences between these different terms, many people use HRV, AAHX, and ERV interchangeably. The Healthy House Institute. Staff. "ERV". Understanding Ventilation: How to Design, Select, and Install Residential Ventilation Systems. June 4, 2009. December 9, 2009. <http://www.healthyhouseinstitute.com/hhip_493-ERV></ref> HRV provides fresh air and improved climate control, while also saving energy by reducing heating (and cooling) requirements.
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- Related: Ground-coupled heat exchanger, Solar air heat, Renewable heat, Energy recovery ventilation, Hot water heat recycling, Seasonal thermal storage, Passive cooling, Solar air conditioning, HVAC, Passive house, Low-energy house, Low energy building, Green building, Zero energy building, Sustainability, Sustainable architecture, Sustainable design
| AIVC Information Paper VIP6 "Air-to-Air Heat Recov... AIVC Information Paper VIP6 "Air-to-Air Heat Recovery in Ventilation Systems" www.aivc.org/publications/Vips/VIP06.htm - Web |
| Heat recovery in Industry Heat recovery in Industry www.seav.sustainability.vic.gov.au/.../resource.asp?action=show_resource&resourcetype=2&resourceid=44#types - Web |
| Energy and Heat Recovery Ventilators (ERV/HRV) Energy and Heat Recovery Ventilators (ERV/HRV) www.toolbase.org/.../techDetails.aspx?ContentDetailID=748 - Web |
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