![]() ![]() To maximize their location, the business has entrances at the street and from the building lobby. Think about an average business on the ground level of a 70+ story high-rise building. This same space could take 20 to 30 minutes to warm back up to a comfortable temperature, assuming the doors remained closed, ultimately creating an impossible heating requirement to deal with on extremely cold days. ![]() In fact, if not properly addressed, the air in a street level space of a high-rise building could be completely replaced in less than a minute. The taller the building and the colder the outdoor temperature, the greater the negative pressure on the lower floors. This movement creates negative air pressure in the lower levels of the building and causes the cold outdoor air to be pulled into the building. ![]() Hot air rises, so the warmer, indoor air is buoyant and presses upward to exit the building through a variety of openings in the upper floors. Stack (or chimney) effect occurs in tall buildings when the outdoor temperature is substantially colder than the inside temperature. At Henderson Engineers, we do our best to identify when stack effect is likely to be an issue, so we can help our clients address it during design because once construction is complete and the space is occupied it can be very difficult to fix. In many cases the problem, while fairly common, is not widely understood - it’s known as stack effect. Many street-level tenants of high-rise buildings found it nearly impossible to keep occupants warm despite having thermostats set to maintain comfortable temperatures. 17-20.Extreme cold spells across the country this winter made it difficult for many buildings to maintain comfortable temperatures. (1979), "Flameless Furnace Produces Cheap Power from Garbage and Other Rubbish", Aircraft Engineering and Aerospace Technology, Vol. Installations in ships will burn all oil sludge, sewage and kitchen waste, much of which is presently dumped into the sea and which pollutes the beaches. It will also reduce health hazards arising from rubbish and toxic waste tips. Because of its efficiency the furnace burns without smoke or smell and the invisible discharge from the stack is well below Clean Air Act requirements. In addition to power production the development will bring major environmental advantage. Pearce has won a world race to harness cheap energy from furnaces which burn without flame and which operate on aerated sand. Conversion of domestic garbage in the United Kingdom into useable energy would alone save the equivalent of some £200 million of oil imports each year. Also there are thousands of millions of tonnes of low‐grade fuels, such as peat, shale and lignite, throughout the world which can now become energy producing. By turning waste into a fuel the process will add significantly to world energy reserves which are running down as oilfields become exhausted. His ideas have been proved on a plant which has also produced energy from animal wastes, sewage, industrial effluents, waste oil, detergents, brown coal, waste paint and even ther ejected riddlings from conventional furnaces. Arnold Pearce, has developed a world‐beating process to obtain cheap power from burning domestic garbage, industrial wastes and other low grade materials. ![]()
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