What are the normal oxygen and carbon dioxide percentages in the flue gas in a properly operating gas furnace?
What will be an ideal response?
Around 7.5%
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Compressed liquid water at 1000 kPa and 30°C enters an insulated mixing chamber at 50 kg/s. The water is mixed in the chamber with superheated steam at 1000 kPa. The combined flow exits as a saturated liquid at 1000 kPa. Using your mixing chamber model to calculate the data, plot the mass flow rate of the superheated steam for entering steam temperatures ranging from 200°C to 500°C.
State 1: Liquid inlet; State 2: Steam inlet; State 3: Outlet Given: P1 = P2 = P3 = 1000 kPa; T1 = 30°C; x3 = 0.0; m?1= 50 kg/s Assume: Q?=0 (insulated). Given no other information regarding the mixing chamber, make the following common assumptions: W?=?KE=?PE=0 Also, assume the mixing chamber is a multiple-inlet, single-outlet, steady-state, steady-flow device.
What happens when furnaces are installed on lower voltage supplies?
A) Nothing happens when furnaces are installed on lower voltage supplies. B) There is a significant loss of heating capacity. C) There is a significant gain of heating capacity. D) The furnace will not operate correctly if it is installed on lower voltage supplies.
The relationship of the tolerance to the basic size is referred to as the _______________________
Fill in the blank(s) with correct word
The metabolizable energy minus the heat increment equals the ____ energy
a. gross c. heat b. net d. digestible