电加热器总功率选择的计算

电加热器选择功率是为了满足加热介质所需发热量,是确保加热器能实现加热目的,正常运行的首选。

　　YOUYUDIANJIAREDEREXIAOLVJINSIYU1,KEYIZHEIYANGRENWEI:DIANJIAREQIDEGONGLVJIWEIFARELIANG。

　　1,GONGLVXUANZEDEKAOLV

　　GONGLVDEJISUANXUANZEYINGKAOLVYIXIASANTIAO:

　　⑴ CONGCHUSHIZHUANGTAI,ANGUIDINGSHIJIANYAOQIUSHIXIANJIAREJIEZHIZHISHEDINGWENDU(GONGZUOWENDU);

　　⑵ ZAIGONGKUANGTIAOJIANXIA,FARELIANGZUYIWEICHIJIEZHIWENDU;

　　⑶ YINGYOUYIDINGDEANQUANYUDU,YIBANQU1.2.

　　XIANRAN,CONGDI⑴,⑵TIAOXUANZEGONGLVDEJIAODAZHE,CHENGYIANQUANYUDUJIUSHIYINGXUANDEGONGLV.

　　2,CONGCHUSHIZHUANGTAIJIARESUOXUGONGLVDEJISUAN

　　(1) JINGTAILIUTIJIARE

　　(2) LIUDONGLIUTIJIARE

　　(3) FENGDAOSHIJIAREQICHANGYAKONGQIJIARE

　　YISHANGSANSHIZHONG

　　PJI —— DIANJIAREQISUOXUGONGLV (KW);

　　QSAN —— ZAISHEDINGWENDUXIARONGQIDESANRELIANG(KW);

　　YIBANYOU

　　C1 — BEIJIAREJIEZHIDEBIRE.(Kcal/(kg·℃)

　　C2 — RONGQI(XITONG)DEBIRE.(Kcal/(kg·℃)

　　M1 — BEIJIAREJIEZHIZHILIANG.(Kg);

　　M2 — RONGQI(XITONG)ZHILIANG(Kg);

　　ΔТ — SHEDINGWENDUYUCHUSHIWENDUDECHAZHI.(℃);

　　t — CONGCHUSHIWENDUJIAREJIEZHIZHISHEDINGWENDUSUOGUIDINGDESHIJIAN.(h);

　　F — JIAREJIEZHILIULIANG,(YIBANQUZUIDALIULIANG).(m /min);

　　S — SANREMIANJI. (m2) ;

　　qSUN — (BAOWEN)CAILIAOZAISHEDINGWENDUXIA,DANWEIMIANJISHANGDERESUNSHILIANG. (Kwh/m )

　　3. WEICHIJIEZHIWENDUSUOXUGONGLVDEJISUAN

　　SHIZHONG:

　　PWEI — DIANJIAREQIWEICHIJIEZHIWENDUSUOXUGONGLV.(KW)

　　M1ZENG — MEIXIAOSHIZENGJIADEJIEZHIZHILIANG.(Kg/h)