0
Want this question answered?
Be notified when an answer is posted
Add your answer:
Earn +20 pts
What is the formula for the density of a truncated cone?
Density = Mass/[(1/3*pi*h) * (R12 + R22 + R1*R2)] where h is the height of the frustum, and R1 and R2 are the radii of the two circular sections.
What is the work and answer of 689 divided by 23?
29.9565
Why do chiller's using CFC-11 and HCFC-123 require purge units?
These refrigerants have higher boiling points than say R12 or R22. Thus when a machine using them operates the low side will run in a vacuum. So any low side leak points will suck in air rather than leak refrigerant out. A purge unit constantly samples the condenser gas and removes the air and water vapor which has been pulled in at these leaking points and periodically releases them to atmosphere while it condenses any refrigerant vapor picked up in the sample mix to a liquid and returns it to the machine.
How do you find the area for a frustum cone?
V = 1/3πh ( R12 + R22 + R1R2 )where π is 3.14159265..., and R1, R2 are the radii of the two bases.
What is the formula for finding the Surface Area of a frustum of a cone?
Lateral Surface Area = π(r1 + r2)s = π(r1 + r2)√((r1 - r2)2 + h2)Top Surface Area = πr12Base Surface Area = πr22Total Surface Area = π(r12 + r22 + (r1 * r2) * s) = π[ r12 + r22 + (r1 * r2) * √((r1 - r2)2 + h2) ]
What is the correct pressure on the high side and low side on R22 at 95 degrees?
150 high 75 low
How can you remove liquid from a r22 cylinder?
To remove liquid from an R22 cylinder, you need to first ensure the cylinder is upright and not tilted. Connect a recovery machine to the cylinder and open the liquid valve. Allow the recovery machine to pull out the liquid until only vapor remains in the cylinder.
What is the formula for the density of a truncated cone?
Density = Mass/[(1/3*pi*h) * (R12 + R22 + R1*R2)] where h is the height of the frustum, and R1 and R2 are the radii of the two circular sections.
Can you buy r22 freon from walmart?
Wal-Mart do not have r22 freon, this is a false ad.
30 pounds of R22 freon is equal to what weight?
30 pounds. Is the net weight of the product in a container in it`s liquid state. The vapor pressure within the container will vary according to the temperature of the container. But the net weight is 30 lbs, much like having a propane cylinder refilled.
Why r22 freon is not compatible with r410 freon?
Chemical composition and properties, different system pressures, different pressure/teperarature relationships in when they'll change states from liquid to vapor... you never mix refrigerants, period.
How do you determine if charge is correct using R22?
To determine if a refrigerant charge is correct using R22, you would need to measure the suction and discharge pressure and temperature, calculate the superheat and subcooling values, and compare them to the manufacturer's specifications or recommended values for the specific system. Adjust the refrigerant charge if the measurements are outside the acceptable range to ensure optimal system performance.
Substitute for r22?
r22a
Can you mix R22 with R404A?
No
How do you calculate the volume of a flat top cone?
Take the base Radius to be R1, the top radius to be R2. Then the volume for the "cone" is V = Pi * (R12 + R1R2 + R22) * Height / 3
What should be our head pressure on a R22 unit on a 90 degree day?
265 PSI which equals 120 Degrees Fahrenheit, basically you add about 30 to 35 degrees to the outdoor ambient temperature example 90 degree day at 30 to 35degrees which equals 120 degrees on the high side
Can r22 and 22a be mixed in system?
No
