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Relative Humidity - CIBSE

%rh Why, What & How Dr. Jeremy Wingate Rotronic Instruments (UK) Ltd Wednesday, 14th January 2015 CIBSE Webinar Rotronic Instruments Sales, training and consultancy role Forest Research Regenerating brownfield land through novel decontamination technologies C-Cure Solutions Ltd Joint founder of spin-out aimed at commercialising charcoal technologies PhD from Surrey University Decontamination of mining sites by novel charcoals 1. Human Comfort Sweating = evaporation %rh makes you feel colder Human comfort Temperature Radiated and Air Humidity Air velocity 2. Human Health Dust Mites 50%rh is fatal %rh is worst Pathogen Survival in Air 40-60%rh most lethal for viruses %rh is worst (winter). Mould %rh & poor ventilation 3. Conservation Condensation Mould & Rot Condensing on windows Heritage & Storage Museum artefacts Records Reliability Maintaining equipment etc 4.

1. Human Comfort Sweating = Evaporation ↓ %rh makes you feel colder Human comfort • Temperature » Radiated and Air • Humidity • Air velocity

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