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Pentair sold off its papermaking business to Consolidated Papers Inc. in 1997. [12] While paper had been the backbone of Pentair's business it only amounted to about 10% of their revenue at the time of the sale. [11] In August 1999, Pentair bought the DeVilbiss Air Power Company for $460 million in cash. [16]
In household and commercial usage, most North American and Southern Asian water heaters are the tank type, also called storage water heaters. These consist of a cylindrical vessel or container that keeps water continuously hot and ready to use. Typical sizes for household use range from 75 to 400 L (20 to 100 US gallons).
In an attempt to keep the oil from contaminating the Mississippi River, the Minnesota Department of Natural Resources set a controlled burn that lasted for one day and created a smoke plume about 1 mile (1.6 km) high and 5 miles (8 km) long. The pipe failed due to cracking caused by train shipping induced cracking of the pipe being delivered.
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Estimates in 2006 predicted an annual efficiency of 99%, a reference to the energy retained by storing heat before turning it into electricity, versus converting heat directly into electricity. [ 11 ] [ 12 ] [ 13 ] Various eutectic mixtures of different salts are used (e.g., sodium nitrate , potassium nitrate and calcium nitrate ).
A hot water storage tank where one of the heat sources is solar heating A, that is sent into the hot water storage tank via a smaller pump B (circle with triangle) and the heat exchanger spiral in the hot water storage tank. The other spiral C can be used for a e.g. oil-fired boiler or a wood burner.
A relief valve DN25 on cooling water pipe from heat exchanger Schematic diagram of a conventional spring-loaded pressure relief valve. A relief valve or pressure relief valve (PRV) is a type of safety valve used to control or limit the pressure in a system; excessive pressure might otherwise build up and create a process upset, instrument or equipment failure, explosion, or fire.
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