Chapter16
... Picture the Problem: A steel gasoline tank is completely filled with gasoline, such that the gasoline and the tank have the same initial volumes. When the gas and tank are heated, the gas expands more than the tank, causing some of the gas to spill out of the tank. Strategy: Since the initial volume ...
... Picture the Problem: A steel gasoline tank is completely filled with gasoline, such that the gasoline and the tank have the same initial volumes. When the gas and tank are heated, the gas expands more than the tank, causing some of the gas to spill out of the tank. Strategy: Since the initial volume ...
variable heat pattern burners
... Variable Heat Pattern Burners can be adjusted for any combination of the following eight conditions: Heat input ...
... Variable Heat Pattern Burners can be adjusted for any combination of the following eight conditions: Heat input ...
Influence of supercritical ORC parameters on plate heat
... Also to keep pinch point difference at 10°C, when pmax↑, higher HX efficiency is needed and so thus A has to ↑ o Influence of Tmax and pmax on HX efficiency NOT possible to use NTU-method to calculated HX efficiency, as in some parts of the heat transfer procedure, neither T nor cp are constant ...
... Also to keep pinch point difference at 10°C, when pmax↑, higher HX efficiency is needed and so thus A has to ↑ o Influence of Tmax and pmax on HX efficiency NOT possible to use NTU-method to calculated HX efficiency, as in some parts of the heat transfer procedure, neither T nor cp are constant ...
CHE 425 (Fall 96)
... fouled, with corresponding fouling factors of Rfi = 0.0015 and Rfo = 0.0005 m2.K/W, respectively. Should the boiler be schedules for cleaning of the tube surfaces? (If the overall heat transfer coefficient reduced by more than 20%).2 2. Oil flowing at the rate of 5.04 kg/s (Cp = 2.09 kJ/kg.K) is coo ...
... fouled, with corresponding fouling factors of Rfi = 0.0015 and Rfo = 0.0005 m2.K/W, respectively. Should the boiler be schedules for cleaning of the tube surfaces? (If the overall heat transfer coefficient reduced by more than 20%).2 2. Oil flowing at the rate of 5.04 kg/s (Cp = 2.09 kJ/kg.K) is coo ...
Weather-seaman
... small, flexible metal box called an aneroid cell. This aneroid capsule (cell) is made from an alloy of beryllium and copper.[9] The evacuated capsule (or usually more capsules) is prevented from collapsing by a strong spring. Small changes in external air pressure cause the cell to expand or contrac ...
... small, flexible metal box called an aneroid cell. This aneroid capsule (cell) is made from an alloy of beryllium and copper.[9] The evacuated capsule (or usually more capsules) is prevented from collapsing by a strong spring. Small changes in external air pressure cause the cell to expand or contrac ...
Appendix A – Heat transfer coefficients
... where subscript i is the number of the wall layer (number 1 presents the most inner layer and the inner surface) and h presents the height of the wall section. The heat exchange properties of the wall materials are given in Table A.1. Table A.1. Wall material properties. ...
... where subscript i is the number of the wall layer (number 1 presents the most inner layer and the inner surface) and h presents the height of the wall section. The heat exchange properties of the wall materials are given in Table A.1. Table A.1. Wall material properties. ...
Dynamic insulation
Dynamic insulation is a form of insulation where cool outside air flowing through the thermal insulation in the envelope of a building will pick up heat from the insulation fibres. Buildings can be designed to exploit this to reduce the transmission heat loss (U-value) and to provide pre-warmed, draft free air to interior spaces. This is known as dynamic insulation since the U-value is no longer constant for a given wall or roof construction but varies with the speed of the air flowing through the insulation (climate adaptive building shell). Dynamic insulation is different from breathing walls. The positive aspects of dynamic insulation need to be weighed against the more conventional approach to building design which is to create an airtight envelope and provide appropriate ventilation using either natural ventilation or mechanical ventilation with heat recovery. The air-tight approach to building envelope design, unlike dynamic insulation, results in a building envelope that provides a consistent performance in terms of heat loss and risk of interstitial condensation that is independent of wind speed and direction. Under certain wind conditions a dynamically insulated building can have a higher heat transmission loss than an air-tight building with the same thickness of insulation.