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Sometimes called a check valve or a backflow preventer, a chemigation valve is an apparatus designed to protect water supplies from agricultural chemicals used during chemigation, the application of chemicals such as fertilizers and pesticides through irrigation water. [1]
Bunn-O-Matic Corporation is an American manufacturer of dispensed beverage equipment (including coffee and tea) headquartered in Springfield, Illinois, with a plant in Creston, Iowa. [1] Currently, the corporation's products are sold under the BUNN and Bunn-O-Matic brands. The current president and CEO is Arthur H. Bunn.
Bottled water dispensers can be top-mounted or bottom-loaded, depending on the design of the model. Bottled water dispensers typically use 5-gallon (18.9 litres) bottles commonly located on top of the unit. Pressure coolers are a subcategory of water dispensers encompassing drinking water fountains and direct-piping water dispensers. Water ...
On the other hand, an instant hot water dispenser without a tank does not waste significant energy. When hot water is needed, the instant heater consumes at least 2000 watts to produce hot water at 92 °C and above. [citation needed] The hot water flow rate is approximately 20 litres per hour. Comparing this with the insulated tank type of hot ...
Heat traps are valves or loops of pipe on the cold water inlet and hot water outlet of water heaters. The heat traps allow cold water to flow into the water heater tank, but prevent unwanted natural convection and heated water to flow out of the tank. [1] [2] Newer water heaters have built-in heat traps.
Hydronic balancing, also called hydraulic balancing, is the process of optimizing the distribution of water in a building's hydronic heating or cooling system by equalizing the system pressure. In a balanced system every radiator is set to receive the proper amount of fluid in order to provide the intended indoor climate at optimum energy ...
The case where the system dynamics are described by a set of linear differential equations and the cost is described by a quadratic function is called the LQ problem. One of the main results in the theory is that the solution is provided by the linear–quadratic regulator ( LQR ), a feedback controller whose equations are given below.
October 9, 2013 Not the Bullet, But the Fall: 36 December 11, 2013 Cullen Bunn Brian Hurtt Bill Crabtree 37 January 15, 2014 38 February 5, 2014 39 March 12, 2014 40 May 7, 2014 The Grey Witch: 41 June 11, 2014 Cullen Bunn Tyler Crook Bill Crabtree Hell and High Water: 42 August 27, 2014 Cullen Bunn Brian Hurtt Bill Crabtree 43 September 24 ...