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April 21, 2014

Search: HVAC

Number of results: 32

HVAC
What kind of evacuation?
Sunday, March 18, 2012 at 3:18pm by Ms. Sue

HVAC / Electrical
see other post.
Thursday, April 22, 2010 at 11:37am by bobpursley

HVAC
How many Ampere of 1 horse power motor?
Tuesday, October 2, 2012 at 10:41am by John V

hvac/r
When antifreeze is added to water specific heat
Wednesday, May 9, 2012 at 9:49pm by marvin

HVAC
Why must all valves be open when an evacuation is performed?
Sunday, March 18, 2012 at 3:18pm by Tony

HVAC
They shouldn't they should be closed. If they are open how can you tell if there is a leak?
Sunday, March 18, 2012 at 3:18pm by Joshua Bui

hvac
an oil slinger is found in a reciprocating compressor employing what type of lubrication system
Saturday, October 29, 2011 at 11:29pm by miguel

hvac
what is the required input in watts to operate a 70 percent efficient three-horsepower electric motor
Monday, October 17, 2011 at 10:29pm by miguel

hvac
what happens to the pressure at locations moving vertically up or down a ph constant-enthalpy line?
Saturday, October 29, 2011 at 11:10pm by miguel

hvac
gas trapped in a reciprocating piston compressors clearance space expands at the beginning of the suction stroke what effect does this have on the system
Saturday, October 29, 2011 at 11:25pm by miguel

hvac school
What temp would a fixed volume of gas need to be heated in order to double its pressure if it starts out at 25?
Friday, November 30, 2012 at 2:35pm by bruce

hvac
compressor cylinger unloading reduces the capacity of a reciprocating compressor by
Saturday, October 29, 2011 at 11:27pm by miguel

hvac
what is the difference between fall-prevention and fall-arresting equipment?
Sunday, November 17, 2013 at 10:42pm by antonio

hvac??
Wouldn't it be the difference between preventing a fall and stopping a fall before the person was hurt?
Sunday, November 17, 2013 at 10:42pm by Ms. Sue

hvac
when antifreeze is add to water the water specific heat
Saturday, October 29, 2011 at 11:26pm by miguel

Hvac
I have a series circuit with 115 Volta with r16ohmd r2 22ohms r3 44 ohms what is the wattage on r3
Thursday, October 11, 2012 at 11:39pm by Anonymous

HVAC / Electrical
what is the total resistance in a circuit having 3 feetof 10 ohm/ft wire, with two 15 ohm resistors wired in parallel?
Thursday, April 22, 2010 at 11:37am by tom

hvac
calculate the amount of heat required to change 5 pounds of ice at 32 degrees to water 32 degrees
Monday, October 17, 2011 at 10:19pm by miguel

Hvac
I = E/(R1+R2+R3) = 115/82 = 1.40 Amps. P3 = I^2*R3 = (1.40)^2 * 44 = 86.5 Watts
Thursday, October 11, 2012 at 11:39pm by Henry

hvac
3 horsepower = 2237 watts; therefore, you would need 2237/0.7 = ? watts input if it were 70% efficient.
Monday, October 17, 2011 at 10:29pm by DrBob222

hvac
5 lbs x 144 Btu / lbs = 720 Btu
Monday, October 17, 2011 at 10:19pm by Brandon

Hvac
3 resistors of 5 ohms,15 ohms, and 30 ohms are connected in series and placed across a 50 volt batt. Find the voltage drops acroos each resistor . And find the current through each resistor
Thursday, July 18, 2013 at 9:59am by Dave

hvac
q to melt ice mass ice(in grams) x heat fusion. Is that 32 F or 32 C. If 32 C, that will be q = mass melted ice x specific heat x (Tfinal-Tinitial) Then add the two qs together.
Monday, October 17, 2011 at 10:19pm by DrBob222

economics
http://www.jiskha.com/display.cgi?id=1363355895 You can't think of any examples? electricians welders HVAC techs etc.
Friday, March 15, 2013 at 11:22am by Writeacher

math
The Ministry of Finance published the FY2009 Tax Reform ( Main Points) on December 19, 2008. Included in the Reform is the introduction of a 2- year measure allowing immediate depreciation for investment in energy- saving facilities and appliances. If this measure doubles the ...
Monday, November 14, 2011 at 7:07pm by Anonymous

math
The Ministry of Finance published the FY2009 Tax Reform ( Main Points) on December 19, 2008. Included in the Reform is the introduction of a 2- year measure allowing immediate depreciation for investment in energy- saving facilities and appliances. If this measure doubles the ...
Thursday, November 17, 2011 at 1:29pm by Anonymous

hvac
Try some of the following links for information: http://search.yahoo.com/search?fr=mcafee&p=what+is+the+specific+heat+of+water+when+antifreeze+is+added%3F Sra
Saturday, October 29, 2011 at 11:26pm by SraJMcGin

Hvac
total voltage drop is 50v total R = 5+15+30=50Ω current is thus 50v/50Ω = 1A divide the voltage drop among the resistors 5Ω: (5/50)(50) = 5v 15Ω: (15/50)(50) = 15v 30Ω: (30/50)(50) = 30v
Thursday, July 18, 2013 at 9:59am by Steve

hvac
Try some of the following links for information: http://search.yahoo.com/search?fr=mcafee&p=what+type+of+lubrication+system+would+an+oi+slinger+in+a+reciprocating+compressor Sra
Saturday, October 29, 2011 at 11:29pm by SraJMcGin

hvac
Try some of the following links for information: http://search.yahoo.com/search?fr=mcafee&p=a+compressor+cylinger+unloading+reduces+the+capaity+o+f+a+reciprocating+compressor+by+how+much%3F Sra
Saturday, October 29, 2011 at 11:27pm by SraJMcGin

hvac
See if any of the following links will help you: http://search.yahoo.com/search?fr=mcafee&p=what+is+the+effect+on+the+system+when+gas+is+trapped+in+a+reciprocating+piston+compressor%27s+clearance+space%3F Sra
Saturday, October 29, 2011 at 11:25pm by SraJMcGin

hvac
Try some of the following links for information: http://search.yahoo.com/search?fr=mcafee&p=what+about+pressure+at+locations++moving+vertically+up+or+down+a+ph+constant-enthalpy+line%3F Sra
Saturday, October 29, 2011 at 11:10pm by SraJMcGin

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