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Alternatives to Insulation

February 18, 2023 Rogier F. van Vlissingen 1 Comment

In respect of building envelopes, we tend to think insulation, as if that were the only option. But the range…

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Posted in: Economics, Energy Efficiency, Finance, Housing, Retrofits, Thermal Load, Thermal Performance Filed under: emissivity, heat blocking, insulator, payback, reflectivity, termal load

Replacing Brains with Bureaucracy

January 28, 2023 Rogier F. van Vlissingen

All the noise over ESG has become a horrible distraction, but there is increasing resistance, as some states have begun…

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Posted in: Economics, Finance, Retrofits Filed under: CAPM, ESG

Retrofitting is where it’s at

January 26, 2023 Rogier F. van Vlissingen 2 Comments

Anyone who has followed the changes of mileage in cars, has realized that the fleet performance changes slowly because cars…

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Posted in: Economics, Energy Efficiency, Housing, Retrofits, Thermal Load, Thermal Performance Filed under: blocking heat, Building envlope, thermal load, Window insulator

When Energy Met Density

December 24, 2022 Rogier F. van Vlissingen

New Energy Storage Solutions In the popular imagination, energy density is gaining some new recognition because people are starting to…

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Posted in: Air Quality, Economics, Energy Efficiency, Retrofits Filed under: Transportation

It’s the Envelope, Stupid!

November 28, 2022 Rogier F. van Vlissingen 1 Comment

We keep lamenting the amounts of energy used by buildings, but it’s like the proverbial weather in New England: nobody…

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Posted in: Economics, Energy Efficiency, Housing, Retrofits, Thermal Load, Thermal Performance Filed under: building envelope, emissivity, heat rejection, insulation, r-value

Air Quality Monitoring Michagass

March 18, 2022 Rogier F. van Vlissingen

Notes from the field: Measuring AQI is a troubled affair. Indoor air quality (IAQ) has been a joke for a…

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Posted in: Air Quality, Economics, Energy Efficiency, Housing Filed under: BLATN, BRWISSEN, CO2, Formaldehyde, HCHO, IAQ, PM2.5, Temtop

IAQ Trifecta, with Plants

March 1, 2022 Rogier F. van Vlissingen

Ventilation, Filtration and… Plants. For Indoor Air Quality, ventilation is basically about the exchange of CO2 for Oxygen, although it…

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Posted in: Air Quality, Housing Filed under: Dexwet Pure Air, Plants, PM2.5, Ventilation

IAQ in the Bronx

February 8, 2022 Rogier F. van Vlissingen

This is part of the growing story of the Dexwet Pure Air introduction in the US, and the initial commercial…

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Posted in: Air Quality, Economics, Housing

The Payoff from Clean Coils

December 5, 2021 Rogier F. van Vlissingen

It is more or less an open industry secret that in refrigeration and HVAC some 15-25% of energy is wasted…

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Posted in: Air Quality, Economics, Energy Efficiency Filed under: Cleaning, coils, ghost energy, HVAC, refirgeration, vampire energy

Steam and Respiratory Infections

October 2, 2021 Rogier F. van Vlissingen

The truth is, steam radiators were designed to keep you warm with the windows open, because after the 1918 flu…

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Posted in: Air Quality, Energy Efficiency, Uncategorized Filed under: Air Quality, CO2, Dexwet, Dexwet Pure Air, Oxygen, particulates, Plants, Pure Air

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