ᴀɴ ᴀᴍᴍᴏɴɪᴀ ᴄᴏᴍᴘʀᴇꜱꜱᴏʀ ᴏᴘᴇʀᴀᴛᴇꜱ ᴀᴛ ᴀɴ ᴇᴠᴀᴘᴏʀᴀᴛᴏʀ ᴘʀᴇꜱꜱᴜʀᴇ ᴏꜰ 316 ᴋᴘᴀ ᴀɴᴅ ᴀ ᴄᴏɴᴅᴇɴꜱᴇʀ ᴘʀᴇꜱꜱᴜʀᴇ ᴏꜰ 1514.2 ᴋᴘᴀ. ᴛʜᴇ ʀᴇꜰʀɪɢᴇʀᴀɴᴛ ɪꜱ ꜱᴜʙᴄᴏᴏʟᴇᴅ 5 ᴅᴇɢʀᴇᴇꜱ ᴀɴᴅ ɪꜱ ꜱᴜᴘᴇʀʜᴇᴀᴛᴇᴅ 8 ᴅᴇɢʀᴇᴇꜱ. ᴀ ᴛᴡɪɴ-ᴄʏʟɪɴᴅᴇʀ ᴄᴏᴍᴘʀᴇꜱꜱᴏʀ ᴡɪᴛʜ ʙᴏʀᴇ ᴛᴏ ꜱᴛʀᴏᴋᴇ ʀᴀᴛɪᴏ ᴏꜰ 0.85 ɪꜱ ᴛᴏ ʙᴇ ᴜꜱᴇᴅ ᴀᴛ 1200 ʀᴘᴍ. ᴛʜᴇ ᴍᴇᴄʜᴀɴɪᴄᴀʟ ᴇꜰꜰɪᴄɪᴇɴᴄʏ ɪꜱ 77%. ꜰᴏʀ ᴀ ʟᴏᴀᴅ ᴏꜰ 87.5 ᴋᴡ, ᴅᴇᴛᴇʀᴍɪɴᴇ: (ᴀ) ᴛʜᴇ ᴠᴏʟᴜᴍᴇ ꜰʟᴏᴡʀᴀᴛᴇ ᴏꜰ ᴄᴏᴏʟɪɴɢ ᴡᴀᴛᴇʀ ɪɴ ᴛʜᴇ ᴄᴏɴᴅᴇɴꜱᴇʀ ɪꜰ ᴛʜᴇ ɪɴᴄʀᴇᴀꜱᴇ ɪɴ ᴛᴇᴍᴘᴇʀᴀᴛᴜʀᴇ ɪꜱ 7 ᴅᴇɢʀᴇᴇꜱ, (ʙ) ᴛʜᴇ ʙᴏʀᴇ ᴀɴᴅ ꜱᴛʀᴏᴋᴇ, (ᴄ) ᴛʜᴇ ꜱɪᴢᴇ ᴏꜰ ᴛʜᴇ ᴅʀɪᴠɪɴɢ ᴍᴏᴛᴏʀ, ᴀɴᴅ (ᴅ) ᴛʜᴇ Qᴜᴀʟɪᴛʏ ᴏꜰ ᴛʜᴇ ʀᴇꜰʀɪɢᴇʀᴀɴᴛ ᴇɴᴛᴇʀɪɴɢ ᴛʜᴇ ᴇᴠᴀᴘᴏʀᴀᴛᴏʀ
ᴀɴ ᴀᴍᴍᴏɴɪᴀ ᴄᴏᴍᴘʀᴇꜱꜱᴏʀ ᴏᴘᴇʀᴀᴛᴇꜱ ᴀᴛ ᴀɴ ᴇᴠᴀᴘᴏʀᴀᴛᴏʀ ᴘʀᴇꜱꜱᴜʀᴇ ᴏꜰ 316 ᴋᴘᴀ ᴀɴᴅ ᴀ ᴄᴏɴᴅᴇɴꜱᴇʀ ᴘʀᴇꜱꜱᴜʀᴇ ᴏꜰ 1514.2 ᴋᴘᴀ. ᴛʜᴇ ʀᴇꜰʀɪɢᴇʀᴀɴᴛ ɪꜱ ꜱᴜʙᴄᴏᴏʟᴇᴅ 5 ᴅᴇɢʀᴇᴇꜱ ᴀɴᴅ ɪꜱ ꜱᴜᴘᴇʀʜᴇᴀᴛᴇᴅ 8 ᴅᴇɢʀᴇᴇꜱ. ᴀ ᴛᴡɪɴ-ᴄʏʟɪɴᴅᴇʀ ᴄᴏᴍᴘʀᴇꜱꜱᴏʀ ᴡɪᴛʜ ʙᴏʀᴇ ᴛᴏ ꜱᴛʀᴏᴋᴇ ʀᴀᴛɪᴏ ᴏꜰ 0.85 ɪꜱ ᴛᴏ ʙᴇ ᴜꜱᴇᴅ ᴀᴛ 1200 ʀᴘᴍ. ᴛʜᴇ ᴍᴇᴄʜᴀɴɪᴄᴀʟ ᴇꜰꜰɪᴄɪᴇɴᴄʏ ɪꜱ 77%. ꜰᴏʀ ᴀ ʟᴏᴀᴅ ᴏꜰ 87.5 ᴋᴡ, ᴅᴇᴛᴇʀᴍɪɴᴇ: (ᴀ) ᴛʜᴇ ᴠᴏʟᴜᴍᴇ ꜰʟᴏᴡʀᴀᴛᴇ ᴏꜰ ᴄᴏᴏʟɪɴɢ ᴡᴀᴛᴇʀ ɪɴ ᴛʜᴇ ᴄᴏɴᴅᴇɴꜱᴇʀ ɪꜰ ᴛʜᴇ ɪɴᴄʀᴇᴀꜱᴇ ɪɴ ᴛᴇᴍᴘᴇʀᴀᴛᴜʀᴇ ɪꜱ 7 ᴅᴇɢʀᴇᴇꜱ, (ʙ) ᴛʜᴇ ʙᴏʀᴇ ᴀɴᴅ ꜱᴛʀᴏᴋᴇ, (ᴄ) ᴛʜᴇ ꜱɪᴢᴇ ᴏꜰ ᴛʜᴇ ᴅʀɪᴠɪɴɢ ᴍᴏᴛᴏʀ, ᴀɴᴅ (ᴅ) ᴛʜᴇ Qᴜᴀʟɪᴛʏ ᴏꜰ ᴛʜᴇ ʀᴇꜰʀɪɢᴇʀᴀɴᴛ ᴇɴᴛᴇʀɪɴɢ ᴛʜᴇ ᴇᴠᴀᴘᴏʀᴀᴛᴏʀ
Principles of Heat Transfer (Activate Learning with these NEW titles from Engineering!)
8th Edition
ISBN:9781305387102
Author:Kreith, Frank; Manglik, Raj M.
Publisher:Kreith, Frank; Manglik, Raj M.
Chapter5: Analysis Of Convection Heat Transfer
Section: Chapter Questions
Problem 5.2P: 5.2 Evaluate the Prandtl number from the following data: , .
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ᴀɴ ᴀᴍᴍᴏɴɪᴀ ᴄᴏᴍᴘʀᴇꜱꜱᴏʀ ᴏᴘᴇʀᴀᴛᴇꜱ ᴀᴛ ᴀɴ ᴇᴠᴀᴘᴏʀᴀᴛᴏʀ ᴘʀᴇꜱꜱᴜʀᴇ ᴏꜰ 316 ᴋᴘᴀ ᴀɴᴅ ᴀ ᴄᴏɴᴅᴇɴꜱᴇʀ ᴘʀᴇꜱꜱᴜʀᴇ ᴏꜰ 1514.2 ᴋᴘᴀ. ᴛʜᴇ ʀᴇꜰʀɪɢᴇʀᴀɴᴛ ɪꜱ ꜱᴜʙᴄᴏᴏʟᴇᴅ 5 ᴅᴇɢʀᴇᴇꜱ ᴀɴᴅ ɪꜱ ꜱᴜᴘᴇʀʜᴇᴀᴛᴇᴅ 8 ᴅᴇɢʀᴇᴇꜱ. ᴀ ᴛᴡɪɴ-ᴄʏʟɪɴᴅᴇʀ ᴄᴏᴍᴘʀᴇꜱꜱᴏʀ ᴡɪᴛʜ ʙᴏʀᴇ ᴛᴏ ꜱᴛʀᴏᴋᴇ ʀᴀᴛɪᴏ ᴏꜰ 0.85 ɪꜱ ᴛᴏ ʙᴇ ᴜꜱᴇᴅ ᴀᴛ 1200 ʀᴘᴍ. ᴛʜᴇ ᴍᴇᴄʜᴀɴɪᴄᴀʟ ᴇꜰꜰɪᴄɪᴇɴᴄʏ ɪꜱ 77%. ꜰᴏʀ ᴀ ʟᴏᴀᴅ ᴏꜰ 87.5 ᴋᴡ, ᴅᴇᴛᴇʀᴍɪɴᴇ:
(ᴀ) ᴛʜᴇ ᴠᴏʟᴜᴍᴇ ꜰʟᴏᴡʀᴀᴛᴇ ᴏꜰ ᴄᴏᴏʟɪɴɢ ᴡᴀᴛᴇʀ ɪɴ ᴛʜᴇ ᴄᴏɴᴅᴇɴꜱᴇʀ ɪꜰ ᴛʜᴇ ɪɴᴄʀᴇᴀꜱᴇ ɪɴ ᴛᴇᴍᴘᴇʀᴀᴛᴜʀᴇ ɪꜱ 7 ᴅᴇɢʀᴇᴇꜱ, (ʙ) ᴛʜᴇ ʙᴏʀᴇ ᴀɴᴅ ꜱᴛʀᴏᴋᴇ,
(ᴄ) ᴛʜᴇ ꜱɪᴢᴇ ᴏꜰ ᴛʜᴇ ᴅʀɪᴠɪɴɢ ᴍᴏᴛᴏʀ, ᴀɴᴅ
(ᴅ) ᴛʜᴇ Qᴜᴀʟɪᴛʏ ᴏꜰ ᴛʜᴇ ʀᴇꜰʀɪɢᴇʀᴀɴᴛ ᴇɴᴛᴇʀɪɴɢ ᴛʜᴇ ᴇᴠᴀᴘᴏʀᴀᴛᴏʀ
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