1) What is the burning duration of a 1.7 meter diameter gasoline pool fire with a...
1) What is the burning duration of a 1.7 meter diameter gasoline pool fire with a volume of 0.042 m3?
2) What is the regression rate of a 1.6 meter diameter gasoline pool fire?
Homework Answers
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1) What is the burning duration of a 1.7 meter diameter gasoline
pool fire with a...
1. Define heat release rate (HRR) and explain its importance, in your own words. Specifically, what...
1. Define heat release rate (HRR) and explain its importance, in your own words. Specifically, what clements affect the HRR of a single fuel package? What is the mathematical formula for determining the HRR, and what does each element of the equation represent? Write your answers in your own words. Provide all references. Determine the peak HRR of the following items in Review Questions 2-5 (provide refer- ences for your answers): 2. Bunk bed 3. Sofa 4. Mattress 5. Kiosk...
9. A fire hose nozzle has a diameter of 0.03m, and must be able to deliver...
9. A fire hose nozzle has a diameter of 0.03m, and must be able to deliver a flow rate of 1 cubic meter per minute. If the nozzle is attached to a hose with 10cm diameter, what pressure must be maintained just upstream of the nozzle to deliver this flow rate? Assume no energy loss. OSS
A fluid of density 1300 kg/m3 flows out through a 3 meter diameter pipe without friction at a rat...
A fluid of density 1300 kg/m3 flows out through a 3 meter diameter pipe without friction at a rate of 1500 L/s. Find the velocity of the fluid as it flows out of the 3 meter diameter pipe. Note that the 'speed' sensor does not give enough significant figures... use the sensor, to prove your calculations (and not the opposite!) Submit Answer Tries 0/99 Calculate the velocity of the fluid if the pipe constricts to a diameter of 1 meter....
2) What volume (in m3) is occupied by 1 mol of gas? a) 1.7 x 10-18...
2) What volume (in m3) is occupied by 1 mol of gas? a) 1.7 x 10-18 m3 b 6.0 x 1029 m3 c 6.0 x 1023 m3 d 6.0 x 101 m3 Comes from 13.3 The Ideal Gas Law
help me with these im getting lost 6) If a swimming pool is being filled, the...
help me with these im getting lost
6) If a swimming pool is being filled, the volume in the pool is described by the equation V = (1 gal/s/s)t2 + (2 gal/s)t + 3 gal A) What is the volume flow rate (dv/dt) after 30 seconds? 6)A) B) What is the volume of the pool after 30 seconds? 6)B) 7) When a fire hose is first turned on the flow rate changes by the following equation one = (2 gal/s)t2...
L 2. Steady statemass balance: Water is flowing at steady state in a 0.1 meter-diameter pipe...
L 2. Steady statemass balance: Water is flowing at steady state in a 0.1 meter-diameter pipe with a maximum velocity (turbulent profile) of 0.3 meters/sec. The pipe then goes through an expansion, to where it is then flowing in a 0.5 meter-diameter pipe, and the flow regime has changed from turbulent to laminar. In the second section of pipe, calculate the velocity as (a) block flow profile (Vavg), and (b) maximum velocity in laminar flow profile? HINT: you will need...
Someone help me with question(b) and (c),thx!! (40 %) For a 1-mm-diameter n-hexane droplet burning in air at atmospheric...
Someone help me with
question(b) and (c),thx!!
(40 %) For a 1-mm-diameter n-hexane droplet burning in air at atmospheric pressure. Assume no heat is conducted into the interior of the liquid droplet and 4. that the droplet temperature is equal to the boiling point. The ambient air is at 298 K. (a) Estimate the mass burning rate of the droplet (b) Calculate the ratio of the flame radius to droplet radius (c) Calculate the flame temperature (d) Plot the temperature...
1. A constriction meter in a 2-inch diameter pipeline consists of a short section of 1.2-inch...
1. A constriction meter in a 2-inch diameter pipeline consists of a short section of 1.2-inch diameter pipe (as shown below). The contraction and expansion are abrupt with 0 = 180 degrees. When the flow rate is 0.19 cfs the pressure at point 1 is 14 psi. (a) For this flow rate, calculate the level of the energy grade line (EGL) and hydraulic grade line (HGL) before the contraction (point 1), in the contraction (point 2) and after the expansion...
Combat Fire, Inc. manufactures steel cylinders and nozzles for two models of fire extinguishers: (1) a...
Combat Fire, Inc. manufactures steel cylinders and nozzles for
two models of fire extinguishers: (1) a home fire extinguisher and
(2) a commercial fire extinguisher. The home model is a
high-volume (54,000 units), half-gallon cylinder that holds 2 1/2
pounds of multi-purpose dry chemical at 480 PSI. The commercial
model is a low-volume (10,200 units), two-gallon cylinder that
holds 10 pounds of multi-purpose dry chemical at 390 PSI. Both
products require 1.5 hours of direct labor for completion.
Therefore, total...
Combat Fire, Inc. manufactures steel cylinders and nozzles for two models of fire extinguishers: (1) a...
Combat Fire, Inc. manufactures steel cylinders and nozzles for two models of fire extinguishers: (1) a home fire extinguisher and (2) a commercial fire extinguisher. The home model is a high-volume (54,000 units), half-gallon cylinder that holds 2 1/2 pounds of multi- purpose dry chemical at 480 PSI. The commercial model is a low-volume (10,200 units), two-gallon cylinder that holds 10 pounds of multi-purpose dry chemical at 390 PSI. Both products require 1.5 hours of direct labor for completion. Therefore,...
1. Define heat release rate (HRR) and explain its importance, in your own words. Specifically, what clements affect the HRR of a single fuel package? What is the mathematical formula for determining the HRR, and what does each element of the equation represent? Write your answers in your own words. Provide all references. Determine the peak HRR of the following items in Review Questions 2-5 (provide refer- ences for your answers): 2. Bunk bed 3. Sofa 4. Mattress 5. Kiosk...
9. A fire hose nozzle has a diameter of 0.03m, and must be able to deliver a flow rate of 1 cubic meter per minute. If the nozzle is attached to a hose with 10cm diameter, what pressure must be maintained just upstream of the nozzle to deliver this flow rate? Assume no energy loss. OSS
A fluid of density 1300 kg/m3 flows out through a 3 meter diameter pipe without friction at a rate of 1500 L/s. Find the velocity of the fluid as it flows out of the 3 meter diameter pipe. Note that the 'speed' sensor does not give enough significant figures... use the sensor, to prove your calculations (and not the opposite!) Submit Answer Tries 0/99 Calculate the velocity of the fluid if the pipe constricts to a diameter of 1 meter....
2) What volume (in m3) is occupied by 1 mol of gas? a) 1.7 x 10-18 m3 b 6.0 x 1029 m3 c 6.0 x 1023 m3 d 6.0 x 101 m3 Comes from 13.3 The Ideal Gas Law
help me with these im getting lost
6) If a swimming pool is being filled, the volume in the pool is described by the equation V = (1 gal/s/s)t2 + (2 gal/s)t + 3 gal A) What is the volume flow rate (dv/dt) after 30 seconds? 6)A) B) What is the volume of the pool after 30 seconds? 6)B) 7) When a fire hose is first turned on the flow rate changes by the following equation one = (2 gal/s)t2...
L 2. Steady statemass balance: Water is flowing at steady state in a 0.1 meter-diameter pipe with a maximum velocity (turbulent profile) of 0.3 meters/sec. The pipe then goes through an expansion, to where it is then flowing in a 0.5 meter-diameter pipe, and the flow regime has changed from turbulent to laminar. In the second section of pipe, calculate the velocity as (a) block flow profile (Vavg), and (b) maximum velocity in laminar flow profile? HINT: you will need...
Someone help me with
question(b) and (c),thx!!
(40 %) For a 1-mm-diameter n-hexane droplet burning in air at atmospheric pressure. Assume no heat is conducted into the interior of the liquid droplet and 4. that the droplet temperature is equal to the boiling point. The ambient air is at 298 K. (a) Estimate the mass burning rate of the droplet (b) Calculate the ratio of the flame radius to droplet radius (c) Calculate the flame temperature (d) Plot the temperature...
1. A constriction meter in a 2-inch diameter pipeline consists of a short section of 1.2-inch diameter pipe (as shown below). The contraction and expansion are abrupt with 0 = 180 degrees. When the flow rate is 0.19 cfs the pressure at point 1 is 14 psi. (a) For this flow rate, calculate the level of the energy grade line (EGL) and hydraulic grade line (HGL) before the contraction (point 1), in the contraction (point 2) and after the expansion...
Combat Fire, Inc. manufactures steel cylinders and nozzles for
two models of fire extinguishers: (1) a home fire extinguisher and
(2) a commercial fire extinguisher. The home model is a
high-volume (54,000 units), half-gallon cylinder that holds 2 1/2
pounds of multi-purpose dry chemical at 480 PSI. The commercial
model is a low-volume (10,200 units), two-gallon cylinder that
holds 10 pounds of multi-purpose dry chemical at 390 PSI. Both
products require 1.5 hours of direct labor for completion.
Therefore, total...
Combat Fire, Inc. manufactures steel cylinders and nozzles for two models of fire extinguishers: (1) a home fire extinguisher and (2) a commercial fire extinguisher. The home model is a high-volume (54,000 units), half-gallon cylinder that holds 2 1/2 pounds of multi- purpose dry chemical at 480 PSI. The commercial model is a low-volume (10,200 units), two-gallon cylinder that holds 10 pounds of multi-purpose dry chemical at 390 PSI. Both products require 1.5 hours of direct labor for completion. Therefore,...
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