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2. Boiler - Wikipedia

   en.wikipedia.org/wiki/Boiler

   A boiler is a closed vessel ... original volume and travels down steam pipes at over 100 kilometres per hour (62 mph). ... energy costs and can lead to poor quality ...

3. Condensing boiler - Wikipedia

   en.wikipedia.org/wiki/Condensing_boiler

   Condensing boilers are water heaters typically used for heating systems that are fueled by gas or oil. When operated in the correct circumstances, a heating system can achieve high efficiency (greater than 90% on the higher heating value ) by condensing water vapour found in the exhaust gases in a heat exchanger to preheat the circulating water.

4. Tankless water heating - Wikipedia

   en.wikipedia.org/wiki/Tankless_water_heating

   Combination boilers are rated by the DHW flow rate. The kW ratings for domestic units are typically 24 kW to 54 kW, giving approximate flow rates of 9 to 23 litres (2.4 to 6.1 US gal) per minute. Larger units are used in commercial and institutional applications, or for multiple-unit dwellings.

5. Cost estimates come back for boiler, systems ... - AOL

   www.aol.com/news/cost-estimates-come-back-boiler...

   Nov. 21—The replacement of mechanical systems at three schools in the district is estimated to cost about $3.96 million, engineers with ISG Inc. presented to the Albert Lea school board Monday.

6. Water heating - Wikipedia

   en.wikipedia.org/wiki/Water_heating

   The lower costs with electric showers compared to the higher costs with tank boilers is due to the time of use: an electric shower uses energy only while the water flows, while a tank boiler works many times a day to keep a quantity of standing water hot for use throughout the day and night.

7. Cogeneration - Wikipedia

   en.wikipedia.org/wiki/Cogeneration

   The capital and operating cost of high-pressure boilers, turbines, and generators is substantial. ... The peak delivery is 10 million pounds per hour (or ...