A modern cabin has a concrete floor that is 4.00 cm thick. A roaring | fire...
A modern cabin has a concrete floor that is 4.00 cm thick. A roaring fire keeps the interior of the cabin at 21.0 0C while the air temperature below the cabin is 2.75 0C. How much heat is lost through the concrete floor in one evening (4 hrs) if the cabin measures 4.00 m by 8.00 m? concrete=1.1
A concrete wall of a house is 45 cm thick and has a surface area 20m x 5 m. The inside temperature of the wall is 47 °C and the outside air temperature is 14 °C. Thermal conductivity of the concrete wall is 0.8 W/mK. Calculate the heat transfer rate through the wall by conduction and its thermal resistance.
Lol 0-15 Show complete solutions including formulas and express all answers to three sig figures. Don't forget units. 1. A tank with a volume of o.250 m3 is filled with an ideal gas at an abrsolute pressure of 1.01x105 Pa when the temperature is 20.0 C. a) Use the ideal gas law to calculate the number of moles of gas in the tank. b) The temperature of the gas is then raised to 6 C 2. The mass of one...
summarizr the followung info and write them in your own words and break them into different key points. 6.5 Metering Chamber: 6.5.1 The minimum size of the metering box is governed by the metering area required to obtain a representative test area for the specimen (see 7.2) and for maintenance of reasonable test accuracy. For example, for specimens incorporating air spaces or stud spaces, the metering area shall span an integral number of spaces (see 5.5). The depth of...
summatize the following info and break them into differeng key points. write them in yojr own words apartus 6.1 Introduction—The design of a successful hot box appa- ratus is influenced by many factors. Before beginning the design of an apparatus meeting this standard, the designer shall review the discussion on the limitations and accuracy, Section 13, discussions of the energy flows in a hot box, Annex A2, the metering box wall loss flow, Annex A3, and flanking loss, Annex...