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christophs@diaspora.glasswings.com
Christoph S

[2410.12043] Optimizing Beer Glass Shapes to Minimize Heat Transfer -- New Results

his paper addresses the problem of determining the optimum shape for a beer glass that minimizes the heat transfer while the liquid is consumed, thereby keeping it cold for as long as possible. The proposed solution avoids the use of insulating materials. The glass is modeled as a body of revolution generated by a smooth curve, constructed from a material with negligible thermal resistance, but insulated at the base. The ordinary differential equation describing the problem is derived from the first law of Thermodynamics applied to a control volume encompassing the liquid. This is an inverse optimization problem, aiming to find the shape of the glass (represented by curve S) that minimizes the heat transfer rate. In contrast, the direct problem aims to determine the heat transfer rate for a given geometry. The solution obtained here is analytic, and the resulting function describing the relation between height ans radius of the glass, is in closed form, providing a family of optimal glass shapes that can be manufactured by conventional methods. Special attention is payed to the dimensions and the capacity of the resulting shapes.

#science #beer

http://www.arxiv.org/abs/2410.12043

Optimizing Beer Glass Shapes to Minimize Heat Transfer -- New Results

This paper addresses the problem of determining the optimum shape for a beer glass that minimizes the heat transfer while the liquid is consumed, thereby keeping it cold for as long as possible. The proposed solution avoids the use of insulating...

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rhysy@diaspora.glasswings.com
Rhysy

Amid the flurry of scientific energy, the team faced a persistent problem: interpreting its data in the face of small sample sizes. One challenge the brewers confronted involves hop flowers, essential ingredients in Guinness that impart a bitter flavor and act as a natural preservative. To assess the quality of hops, brewers measured the soft resin content in the plants. Let’s say they deemed 8 percent a good and typical value. Testing every flower in the crop wasn’t economically viable, however. So they did what any good scientist would do and tested random samples of flowers.

The theory underlying these perennial questions in the domain of small sample sizes hadn’t been developed until Guinness came on the scene—specifically, not until William Sealy Gosset, head experimental brewer at Guinness in the early 20th century, invented the t-test. The concept of statistical significance predated Gosset, but prior statisticians worked in the regime of large sample sizes.

Gosset recognized that this approach only worked with large sample sizes, whereas small samples of hops wouldn’t guarantee that normal distribution. So he meticulously tabulated new distributions for smaller sample sizes. Now known as t-distributions, these plots resemble the normal distribution in that they’re bell-shaped, but the curves of the bell don’t drop off as sharply. That translates to needing an even larger signal-to-noise ratio to conclude significance. His t-test allows us to make inferences in settings where we couldn’t before.

#Statistics
#Beer

https://archive.is/2024.05.29-113132/https://www.scientificamerican.com/article/how-the-guinness-brewery-invented-the-most-important-statistical-method-in/

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florida_ted@diasp.org
Ted

More health-conscious consumers are choosing low alcohol beverages

Nonalcoholic options on menus increased more than 55% from the fourth quarter of 2022 to the same period in 2023, according to data from Technomic, a food service research and consulting firm.

Though nonalcoholic beers have been around since Anheuser-Busch launched O’Doul’s in 1990, recent surges in interest driven primarily by younger and more health-conscious consumers have caused an explosion in the sector, Technomic found.

And analysts forecast that interest will keep growing. Between 2022 and 2026, nonalcoholic beer volumes are expected to grow by about 25%, according to data from the IWSR, an alcoholic beverage insights company.

And according to data from NielsenIQ, a consumer buying behavior database, Colorado was the second-highest state accounting for nonalcoholic beverage investment in 2023.

https://www.cnbc.com/2024/04/09/denver-and-its-craft-breweries-embrace-nonalcoholic-beer-spirits.html

#Denver #Colorado #CraftBeer #NonAlcohol #Brewery #Beer

Denver and its craft breweries embrace nonalcoholic beer, spirits

The interest is due in part to the active and health-conscious lifestyles of Denver residents, local breweries said.

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