mechanic80 Posted June 19, 2010 Share Posted June 19, 2010 hi every one..i am in a confusion that what flows inside the tubes of heater and strainer assembly of T56 A-15 engine.is it fuel or oil?plz give some reference material also if u have... thx Quote Link to comment Share on other sites More sharing options...
Steve1300 Posted June 19, 2010 Share Posted June 19, 2010 From a Lockheed Training manual covering the engines: Downstream from the firewall shutoff valve is the fuel heater and strainer assembly. It utilizes an oil-to-fuel heat exchanger. In the heat exchanger, fuel is warmed to prevent icing in the strainer. The fuel temperature is sensed by a thermostat after the fuel has passed through the heat exchanger. The thermostat is connected to a modulating valve. This valve controls the flow of oil through the heat exchanger. The oil passing over the tubes of the heat exchanger gives off heat that is absorbed by the fuel as it passes through the inside of the heat exchanger tubes. The heat exchanger is capable of raising the temperature of the fuel from a possible temperature of -700 F at the inlet to a minimum outlet temperature of +340 F. A 200-mesh screen wire strainer is provided in the outlet section to collect solid particles that may be in the flowing fuel. Quote Link to comment Share on other sites More sharing options...
mechanic80 Posted June 19, 2010 Author Share Posted June 19, 2010 you r right as for as considering the scientific law about heat exchangers but while surfing the internet i found some diagrams that show oil passing through the inside of the tubes in heater and strainer assembly and fuel around the tubes ... if u referred to the B-2-4 engine maintenance manual its alright because i have studied it..if u r talking about some other reference material,i'll be thankful if u send me a soft copy of that (and the temperature increment range is -70˚F to +34 ˚F.) Quote Link to comment Share on other sites More sharing options...
tenten Posted June 19, 2010 Share Posted June 19, 2010 Picture attached, hope it works. Quote Link to comment Share on other sites More sharing options...
mechanic80 Posted June 19, 2010 Author Share Posted June 19, 2010 buddy see this picture also that i have posted Quote Link to comment Share on other sites More sharing options...
NATOPS1 Posted June 19, 2010 Share Posted June 19, 2010 The oil passing "over the tubes" of the heat exchanger gives off heat that is absorbed by the "fuel as it passes through the inside of the heat exchanger tubes." So the easy answer is fuel flows through the tubes and oil flows around them. Quote Link to comment Share on other sites More sharing options...
mechanic80 Posted June 19, 2010 Author Share Posted June 19, 2010 thx every body...hey can any body give me a soft-copy of any book on T56 A-15 engine. Quote Link to comment Share on other sites More sharing options...
tenten Posted June 19, 2010 Share Posted June 19, 2010 Mechanic80, the attached schematic diagram is “Greek to me†(never seen), however I am still digging my old books. To my knowledge there are two types of Fuel heater & strainer used on T56-A-15:- 1- United Aircraft Products (UAP). 2- Benson fuel heater And the only difference (if I am correct) is in the value limit of scavenge oil back-pressure of each during testing. Tips: 1- Fuel temp below 40⁰F (4.5⁰C) → All oil is allowed to inter to warm up fuel (full heat mode). 2- Fuel temp above 70⁰F (21⁰C) → All oil is bypassing (full bypass mode) 3- Fuel temp in between 40⁰F to 70⁰F → Some oil may inter for warm up. For soft copy I am having “Power Plant Hercules Training Manual†1993, If good for you, is it possible to send it as attachment..? Size on desk 20.1MB. Guide me and you will have it. (tenten is a big zero on the net) Quote Link to comment Share on other sites More sharing options...
mechanic80 Posted June 19, 2010 Author Share Posted June 19, 2010 ....... about the diagram that i posted ...it and some of the local concepts at my place drove me nuts...but i could not find anything written to get corrected.. .... for the size of the book ..what if u can split it in two portions(pdf or word document files can b splitted),save it, then separately zip/compress it and email me as attachment...or if u find splitting it cumbersome just zip/compress the book (as you did to the diagram you posted) and email me as attachment.. ... i heard that gmail is giving good attachment size..heres my gmail id: "[email protected]" ...... thx for your cooperation Quote Link to comment Share on other sites More sharing options...
tenten Posted June 20, 2010 Share Posted June 20, 2010 Mechanic80 I have send you an email. Check your inbox. Quote Link to comment Share on other sites More sharing options...
vans Posted February 14, 2012 Share Posted February 14, 2012 can i have one of those soft copy tenten? Quote Link to comment Share on other sites More sharing options...
tenten Posted April 22, 2012 Share Posted April 22, 2012 can i have one of those soft copy tenten? Way not Vans!! And apologize been not catch your post early, I am trying to send what you asked for; sending your email might help; the book size is 20.1MB. Quote Link to comment Share on other sites More sharing options...
pwylie Posted April 23, 2012 Share Posted April 23, 2012 Great Avatar Vans. Now that's funny. Quote Link to comment Share on other sites More sharing options...
cheema Posted April 26, 2012 Share Posted April 26, 2012 tenten Sir can I get it too? [email protected]. Please Quote Link to comment Share on other sites More sharing options...
tenten Posted April 26, 2012 Share Posted April 26, 2012 cheema; check your email. Quote Link to comment Share on other sites More sharing options...
apexlined Posted April 26, 2012 Share Posted April 26, 2012 Hello sir can i get it? I sure that softcopy very good for my reference.tq sir. [email protected] Quote Link to comment Share on other sites More sharing options...
tenten Posted April 28, 2012 Share Posted April 28, 2012 You have it apexlined; let me know if it works. We never say “NO†for anything as well as our ladies never say “YES†.:) Quote Link to comment Share on other sites More sharing options...
cheema Posted April 29, 2012 Share Posted April 29, 2012 Got it sir. Thanks Quote Link to comment Share on other sites More sharing options...
arash8106 Posted February 12, 2014 Share Posted February 12, 2014 can i have one of those soft copy tenten? and anything else about T56 fuel heat and strainer tnx tenton [email protected] Quote Link to comment Share on other sites More sharing options...
tenten Posted February 20, 2014 Share Posted February 20, 2014 Brother, check your Email. Quote Link to comment Share on other sites More sharing options...
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