| 查看: 1117 | 回复: 11 | |||
| 当前主题已经存档。 | |||
xkw2005荣誉版主 (文坛精英)
我是正经人！
|
[交流]
【求助】请大家帮忙算一下这个换热器！
|
||
|
现在有个疑问 普通的双管程列管换热器，管程与壳程的区别 如图所示，我固定管程介质，只改变壳程介质的流向， 壳程介质的温度和换热情况有什么区别？ 请大家帮忙解答，最好给个例子aspen算一下。 谢谢大家了啊！ |
回复此楼» 猜你喜欢
Sci. Bull. 悲剧经验
已经有4人回复
-
找博士生导师
已经有7人回复
-
上海大学实验技术岗位非升即走
已经有11人回复
-
评审有感
已经有15人回复
-
26/27申博自荐-锂/钠电池方向
已经有4人回复
-
同样的基金本子，换个专家直接从C变A！
已经有3人回复
-
别被青基扩招骗了！26年科研内卷才刚刚开始
已经有4人回复
-
26/27博士推荐
已经有4人回复
-
2026博士还有哪些学校有名额
已经有8人回复
-
云南大学材料与能源学院解琳课题组钙钛矿博士招生
已经有4人回复
xkw2005
荣誉版主 (文坛精英)
我是正经人！
- 应助: 0 (幼儿园)
- 贵宾: 5.258
- 金币: 9730.3
- 散金: 2419
- 红花: 32
- 帖子: 10174
- 在线: 98.1小时
- 虫号: 324138
- 注册: 2007-03-15
- 性别: GG
- 专业: 有机合成
- 管辖: 文献求助
2楼2009-04-07 20:36:47
xkw2005
荣誉版主 (文坛精英)
我是正经人！
- 应助: 0 (幼儿园)
- 贵宾: 5.258
- 金币: 9730.3
- 散金: 2419
- 红花: 32
- 帖子: 10174
- 在线: 98.1小时
- 虫号: 324138
- 注册: 2007-03-15
- 性别: GG
- 专业: 有机合成
- 管辖: 文献求助
3楼2009-04-11 21:01:21
4楼2009-04-11 21:34:57
wanglin628
木虫 (著名写手)
- 应助: 0 (幼儿园)
- 金币: 2366.8
- 红花: 2
- 帖子: 2509
- 在线: 473小时
- 虫号: 589973
- 注册: 2008-08-30
- 专业: 食品科学基础
5楼2009-04-11 23:35:38
xkw2005
荣誉版主 (文坛精英)
我是正经人！
- 应助: 0 (幼儿园)
- 贵宾: 5.258
- 金币: 9730.3
- 散金: 2419
- 红花: 32
- 帖子: 10174
- 在线: 98.1小时
- 虫号: 324138
- 注册: 2007-03-15
- 性别: GG
- 专业: 有机合成
- 管辖: 文献求助
6楼2009-04-12 21:15:32
7楼2009-04-12 21:25:24
★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★
kuhailangyu(金币+2,VIP+0):非常感谢，赚到人品了！ 4-15 22:09
xkw2005(金币+20,VIP+0):非常感谢你的帮助，有机会继续请教！ 4-16 21:49
kuhailangyu(金币+2,VIP+0):非常感谢，赚到人品了！ 4-15 22:09
xkw2005(金币+20,VIP+0):非常感谢你的帮助，有机会继续请教！ 4-16 21:49
|
这是计算的一个例子，给出两种情况下的计算书，比较一下就知道了。 BLOCK: B1 MODEL: HEATX ----------------------------- HOT SIDE: --------- INLET STREAM: HOTF OUTLET STREAM: HOTP PROPERTY OPTION SET: NRTL RENON (NRTL) / IDEAL GAS COLD SIDE: ---------- INLET STREAM: COLDF OUTLET STREAM: COLDP PROPERTY OPTION SET: NRTL RENON (NRTL) / IDEAL GAS *** MASS AND ENERGY BALANCE *** IN OUT RELATIVE DIFF. TOTAL BALANCE MOLE(KMOL/HR ) 3386.92 3386.92 0.000000E+00 MASS(KG/HR ) 64000.0 64000.0 0.000000E+00 ENTHALPY(MMKCAL/H) -225.537 -225.537 0.000000E+00 *** INPUT DATA *** FLASH SPECS FOR HOT SIDE: TWO PHASE FLASH MAXIMUM NO. ITERATIONS 30 CONVERGENCE TOLERANCE 0.000100000 FLASH SPECS FOR COLD SIDE: TWO PHASE FLASH MAXIMUM NO. ITERATIONS 30 CONVERGENCE TOLERANCE 0.000100000 FLOW DIRECTION AND SPECIFICATION: COUNTERCURRENT HEAT EXCHANGER SPECIFIED COLD OUTLET TEMP SPECIFIED VALUE C 20.0000 LMTD CORRECTION FACTOR 1.00000 PRESSURE SPECIFICATION: HOT SIDE OUTLET PRESSURE BAR 0.0300 COLD SIDE PRESSURE DROP BAR 0.0000 HEAT TRANSFER COEFFICIENT SPECIFICATION: HOT LIQUID COLD LIQUID KCAL/HR-SQM-K 730.8684 HOT 2-PHASE COLD LIQUID KCAL/HR-SQM-K 730.8684 HOT VAPOR COLD LIQUID KCAL/HR-SQM-K 730.8684 HOT LIQUID COLD 2-PHASE KCAL/HR-SQM-K 730.8684 HOT 2-PHASE COLD 2-PHASE KCAL/HR-SQM-K 730.8684 HOT VAPOR COLD 2-PHASE KCAL/HR-SQM-K 730.8684 HOT LIQUID COLD VAPOR KCAL/HR-SQM-K 730.8684 HOT 2-PHASE COLD VAPOR KCAL/HR-SQM-K 730.8684 HOT VAPOR COLD VAPOR KCAL/HR-SQM-K 730.8684 *** OVERALL RESULTS *** STREAMS: -------------------------------------- | | HOTF ----->| HOT |-----> HOTP T= 6.0000D+01 | | T= 2.4077D+01 P= 4.9033D+00 | | P= 3.0000D-02 V= 0.0000D+00 | | V= 5.0798D-02 | | COLDP <-----| COLD |<----- COLDF T= 2.0000D+01 | | T= -8.0000D+00 P= 2.9420D+00 | | P= 2.9420D+00 V= 1.0000D+00 | | V= 0.0000D+00 -------------------------------------- DUTY AND AREA: CALCULATED HEAT DUTY MMKCAL/HR 0.2734 CALCULATED (REQUIRED) AREA SQM 5.9266 ACTUAL EXCHANGER AREA SQM 5.9266 PER CENT OVER-DESIGN 0.0000 HEAT TRANSFER COEFFICIENT: AVERAGE COEFFICIENT (DIRTY) KCAL/HR-SQM-K 730.8684 LOG-MEAN TEMPERATURE DIFFERENCE: LMTD CORRECTION FACTOR 1.0000 LMTD (CORRECTED) C 63.1128 NUMBER OF SHELLS 1 PRESSURE DROP: HOTSIDE, TOTAL BAR 4.8733 COLDSIDE, TOTAL BAR 0.0000 PRESSURE DROP PARAMETER: HOT SIDE: 1509.3 COLD SIDE: 0.00000E+00 *** ZONE RESULTS *** TEMPERATURE LEAVING EACH ZONE: HOT ------------------------------------------------------------- | | | | | HOTF | COND | COND | LIQ | LIQ | HOTP ------> | | | | |------> 60.0 | 59.8| 55.5| 33.8| | 24.1 | | | | | COLDP | VAP | BOIL | BOIL | LIQ | COLDF <------ | | | | |<------ 20.0 | -6.8| -6.8| -6.8| | -8.0 | | | | | ------------------------------------------------------------- COLD ZONE HEAT TRANSFER AND AREA: ZONE HEAT DUTY AREA DTLM AVERAGE U MMKCAL/HR SQM C KCAL/HR-SQM-K 1 0.012 0.3185 52.1607 730.8684 2 0.254 5.3955 64.3803 730.8684 3 0.006 0.1647 50.6131 730.8684 4 0.001 0.0479 36.1395 730.8684 BLOCK: B1 MODEL: HEATX ----------------------------- HOT SIDE: --------- INLET STREAM: HOTF OUTLET STREAM: HOTP PROPERTY OPTION SET: NRTL RENON (NRTL) / IDEAL GAS COLD SIDE: ---------- INLET STREAM: COLDF OUTLET STREAM: COLDP PROPERTY OPTION SET: NRTL RENON (NRTL) / IDEAL GAS *** MASS AND ENERGY BALANCE *** IN OUT RELATIVE DIFF. TOTAL BALANCE MOLE(KMOL/HR ) 3386.92 3386.92 0.000000E+00 MASS(KG/HR ) 64000.0 64000.0 0.000000E+00 ENTHALPY(MMKCAL/H) -225.537 -225.537 0.000000E+00 *** INPUT DATA *** FLASH SPECS FOR HOT SIDE: TWO PHASE FLASH MAXIMUM NO. ITERATIONS 30 CONVERGENCE TOLERANCE 0.000100000 FLASH SPECS FOR COLD SIDE: TWO PHASE FLASH MAXIMUM NO. ITERATIONS 30 CONVERGENCE TOLERANCE 0.000100000 FLOW DIRECTION AND SPECIFICATION: COCURRENT HEAT EXCHANGER SPECIFIED COLD OUTLET TEMP SPECIFIED VALUE C 20.0000 LMTD CORRECTION FACTOR 1.00000 PRESSURE SPECIFICATION: HOT SIDE OUTLET PRESSURE BAR 0.0300 COLD SIDE PRESSURE DROP BAR 0.0000 HEAT TRANSFER COEFFICIENT SPECIFICATION: HOT LIQUID COLD LIQUID KCAL/HR-SQM-K 730.8684 HOT 2-PHASE COLD LIQUID KCAL/HR-SQM-K 730.8684 HOT VAPOR COLD LIQUID KCAL/HR-SQM-K 730.8684 HOT LIQUID COLD 2-PHASE KCAL/HR-SQM-K 730.8684 HOT 2-PHASE COLD 2-PHASE KCAL/HR-SQM-K 730.8684 HOT VAPOR COLD 2-PHASE KCAL/HR-SQM-K 730.8684 HOT LIQUID COLD VAPOR KCAL/HR-SQM-K 730.8684 HOT 2-PHASE COLD VAPOR KCAL/HR-SQM-K 730.8684 HOT VAPOR COLD VAPOR KCAL/HR-SQM-K 730.8684 *** OVERALL RESULTS *** STREAMS: -------------------------------------- | | HOTF ----->| HOT |-----> HOTP T= 6.0000D+01 | | T= 2.4077D+01 P= 4.9033D+00 | | P= 3.0000D-02 V= 0.0000D+00 | | V= 5.0798D-02 | | COLDF ----->| COLD |-----> COLDP T= -8.0000D+00 | | T= 2.0000D+01 P= 2.9420D+00 | | P= 2.9420D+00 V= 0.0000D+00 | | V= 1.0000D+00 -------------------------------------- DUTY AND AREA: CALCULATED HEAT DUTY MMKCAL/HR 0.2734 CALCULATED (REQUIRED) AREA SQM 6.1921 ACTUAL EXCHANGER AREA SQM 6.1921 PER CENT OVER-DESIGN 0.0000 HEAT TRANSFER COEFFICIENT: AVERAGE COEFFICIENT (DIRTY) KCAL/HR-SQM-K 730.8684 LOG-MEAN TEMPERATURE DIFFERENCE: LMTD CORRECTION FACTOR 1.0000 LMTD (CORRECTED) C 60.4075 NUMBER OF SHELLS 1 PRESSURE DROP: HOTSIDE, TOTAL BAR 4.8733 COLDSIDE, TOTAL BAR 0.0000 PRESSURE DROP PARAMETER: HOT SIDE: 1509.3 COLD SIDE: 0.00000E+00 *** ZONE RESULTS *** TEMPERATURE LEAVING EACH ZONE: HOT ------------------------------------------------------------- | | | | | HOTF | COND | COND | COND | LIQ | HOTP ------> | | | | |------> 60.0 | 60.0| 55.5| 55.5| | 24.1 | | | | | COLDF | LIQ | BOIL | VAP | VAP | COLDP ------> | | | | |------> -8.0 | -6.8| -6.8| 3.8| | 20.0 | | | | | ------------------------------------------------------------- COLD ZONE HEAT TRANSFER AND AREA: ZONE HEAT DUTY AREA DTLM AVERAGE U MMKCAL/HR SQM C KCAL/HR-SQM-K 1 0.001 0.0257 67.3738 730.8684 2 0.260 5.5138 64.5116 730.8684 3 0.005 0.1152 56.8169 730.8684 4 0.007 0.5374 18.7346 730.8684 重点是换热器几何尺寸！ |
8楼2009-04-15 09:53:31
woshilsh
荣誉版主 (职业作家)
- 应助: 43 (小学生)
- 贵宾: 10.33
- 金币: 21115.1
- 散金: 737
- 红花: 22
- 帖子: 3777
- 在线: 639.7小时
- 虫号: 293038
- 注册: 2006-11-04
- 专业: 计算机应用技术
- 管辖: 仿真模拟
9楼2009-04-15 23:07:37
xkw2005
荣誉版主 (文坛精英)
我是正经人！
- 应助: 0 (幼儿园)
- 贵宾: 5.258
- 金币: 9730.3
- 散金: 2419
- 红花: 32
- 帖子: 10174
- 在线: 98.1小时
- 虫号: 324138
- 注册: 2007-03-15
- 性别: GG
- 专业: 有机合成
- 管辖: 文献求助
10楼2009-04-20 21:36:56
20