Radiant versus convective heat

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The history of sweeping in the United States varies little from that in the United Kingdom. Differences arise from the nature of housing and the political pressures. Early settler houses were built close together out of wood, so when one burnt it spread quickly to neighbouring properties. This caused the authorities to regulate the design of flues. From an early date, fire wardens and inspectors were appointed.

Sweeping of the wide flues of these low buildings was often done by the householder himself, using a ladder to pass a wide brush down the chimney. In a narrow flue, a bag of bricks and brushwood would be dropped down the chimney. But in longer flues climbing boys were used, complete with the UK tradition of coercion and persuasion using burning straw and pins in the feet and the buttocks.[5] Sweeping was not a popular trade. During the eighteenth century the employment of African-American chimney sweeps spread from the south to the north. African-American sweeps faced discrimination and were accused of being inefficient and starting fires. It was claimed that there were fewer fires in London where chimneys were swept by white boys than in New York City. As in the UK, Smart's sweeping machine was available in the US shortly after 1803, but few were used. Unlike the UK, there were no societies formed to advocate for the climbing boys. In fact, the contemporary novel teat for Tat went so far as to deny the Black slave chimney sweeps' hardships by claiming that they had it easier than the London chimney sweeps.[37]
 
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Radiant versus convective heat
 
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