ログイン
ユーザ名:

パスワード:



パスワード紛失

新規登録
メインメニュー
オンライン状況
60 人のユーザが現在オンラインです。 (50 人のユーザが フォーラム を参照しています。)

登録ユーザ: 2
ゲスト: 58

DenaFwb18 westfal もっと...
フォーラム最新投稿一覧

How plate-and-frame heat exchangers work

このトピックの投稿一覧へ

なし How plate-and-frame heat exchangers work

msg# 1
depth:
0
前の投稿 - 次の投稿 | 親投稿 - 子投稿.1 .2 .3 .4 .5 .6 .7 .8 .9 .10 .11 .12 .13 .14 .15 .16 .17 .18 .19 .20 .21 .22 .23 .24 .25 .26 .27 .28 .29 .30 .31 .32 .33 .34 .35 .36 .37 .38 .39 .40 .41 .42 .43 .44 .45 .46 .47 .48 .49 .50 .51 .52 .53 .54 .55 .56 .57 .58 .59 .60 .61 .62 .63 .64 .65 .66 .67 .68 .69 .70 .71 .72 .73 .74 .75 .76 .77 .78 .79 .80 .81 .82 .83 .84 .85 .86 .87 .88 .89 .90 .91 .92 .93 .94 .95 .96 .97 .98 .99 .100 .101 .102 .103 .104 .105 .106 .107 .108 .109 .110 .111 .112 .113 .114 .115 .116 .117 .118 .119 .120 .121 .122 .123 .124 .125 .126 .127 .128 .129 .130 .131 .132 .133 .134 .135 .136 .137 .138 .139 .140 .141 .142 .143 .144 .145 .146 .147 .148 .149 .150 .151 .152 .153 .154 .155 .156 .157 .158 .159 .160 .161 .162 .163 .164 .165 .166 .167 .168 .169 .170 .171 .172 .173 .174 .175 .176 .177 .178 .179 .180 .181 .182 .183 .184 .185 .186 .187 .188 .189 .190 .191 .192 .193 .194 .195 .196 .197 .198 .199 .200 .201 .202 .203 .204 .205 .206 .207 .208 .209 .210 .211 .212 .213 .214 .215 .216 .217 .218 .219 .220 .221 .222 .223 .224 .225 .226 .227 .228 .229 .230 .231 .232 .233 .234 .235 .236 .237 .238 .239 .240 .241 .242 .243 .244 .245 .246 .247 .248 .249 .250 .251 .252 .253 .254 .255 .256 .257 .258 .259 .260 .261 .262 .263 .264 .265 .266 .267 .268 .269 .270 .271 .272 .273 .274 .275 .276 .277 .278 .279 .280 .281 .282 .283 .284 .285 .286 .287 .288 .289 .290 .291 .292 .293 .294 .295 .296 .297 .298 .299 .300 .301 .302 .303 .304 .305 .306 .307 .308 .309 .310 .311 .312 .313 .314 .315 .316 .317 .318 .319 .320 .321 .322 .323 .324 .325 .326 .327 .328 .329 .330 .331 .332 .333 .334 .335 .336 .337 .338 .339 .340 .341 .342 .343 .344 .345 .346 .347 .348 .349 .350 .351 .352 .353 .354 .355 .356 .357 .358 .359 .360 .361 .362 .363 .364 .365 .366 .367 .368 .369 .370 .371 .372 .373 .374 .375 .376 .377 .378 .379 .380 .381 .382 .383 .384 .385 .386 .387 .388 .389 .390 .391 .392 .393 .394 .395 .396 .397 .398 .399 .400 | 投稿日時 2022-4-23 13:34
xysoom  長老   投稿数: 2028
How plate-and-frame heat exchangers work


In a gasketed plate heat exchanger, the plates are fitted with elastomeric gaskets which seal the channels and direct the fluids into alternate channels. The plate pack is assembled between a frame plate and a pressure plate, and compressed by tightening bolts fitted between these plates. The channel plates and the pressure plate are suspended from an upper carrying bar and located by a lower guiding bar, both of which are fixed to the support column. The physical design of the gasketed plate heat exchanger allows easy cleaning, and modification of capacity by the addition or removal of plates.Get more news about Alfa Laval Phe Gaskets,you can vist our website!

This animation above shows the working principle of an Alfa Laval liquid/liquid 1-pass gasketed plate-and-frame heat exchanger where the fluids run counter-currently through the heat exchanger. The hot liquid (illustrated in red) normally enters through one of the upper connections and leaves through the connection underneath. The cold liquid (illustrated in blue) enters through one of the lower connections and leaves through the connection above.As the fluids pass through the heat exchanger, heat is transferred from the hot media to the cold media. Counter current flow enables maximum heat recovery possibilities and very close temperature approach can be achieved. Temperature cross is also possible, meaning that the hot outlet can reach a lower temperature than the cold outlet. This can only be achieved to a limited extent with tubular heat exchangers making plate-and-frame heat exchangers more thermally efficient. You can learn more about the benefits of GPHEs vs shell-and-tube heat exchangers by clicking here.
The fluids enter through the connections and portholes of the heat transfer plates. Specially designed sealing gaskets located between the plates direct the fluids so that the hot and cold fluids pass counter-currently in alternating channels. When the fluid enters between the plates, it passes over the distribution area. Alfa Laval offers two types of distribution areas: our patented CurveFlowTM and the chocolate pattern. The distribution area is one of the most important features of a plate heat exchanger. Its main purpose is to ensure an even flow of fluid over the entire plate while maximizing heat transfer efficiency and minimizing maldistribution and fouling. In the animation you can see that the distribution area helps the fluids to quickly fill up the entire cross section of the plates.
For very heat sensitive media, co-current flow is used in gasketed plate-and-frame heat exchangers. The benefit with this design is that the coldest fluid meets the hottest fluid when entering the heat exchanger, minimizing the risk of overheating or freezing sensitive media. In the animation you can imagine that the hot fluid is reversed, so that both fluids are entering at the bottom connections.
投票数:0 平均点:0.00

投稿ツリー

  条件検索へ


検索
サイト情報
サイト管理者

三笠