最新供熱計算公式

1、熱網(wǎng)供熱計算公式供熱量=（供水溫度回水溫度）X熱網(wǎng)循環(huán)水流量1 大卡（千卡）kcal=4.17kJ1 大卡 kcal=1.163w某臺機組熱網(wǎng)循環(huán)水量4000t/h,供水溫度85C、回水溫度55C,計算該機組每小時供熱量。供熱量=（85-55） X 4000/1000= 120百萬大卡120X4.17=500.4 百萬千焦=500.4 吉焦（GJ）120X 1.163=13956X 104 瓦（W） =139.56 兆瓦（MW ）吉焦千瓦時兆瓦時百萬大卡MKcal噸蒸汽焰GJKW. hMW.hTiGcal1吉焦（百萬千焦）12780. 2780. 240.41千瓦時0. 003610. 001

2、0. 000860. 001431兆瓦時3.6100010. 861.431百萬大卡4. 18711631. 16311.6671噸飽和蒸汽焙2.57000. 70.61初中英語語法歸納復(fù)習(xí)：被動語態(tài)重難點：掌握八種常見時態(tài)的被動語態(tài)，并能根據(jù)不同情景，靈活運用被動語 態(tài)?！局R總結(jié)歸納】概念：表示動作與主語之間是被動關(guān)系的句子是被動語態(tài)。二.主動語態(tài)與被動語態(tài)之間如何轉(zhuǎn)換We Visited that factory last summer - 主動語態(tài)狀語That factorywas visitedby uslast summer t被動語態(tài)主語謂語賓語狀語三.各種不同時態(tài)的主動語態(tài)與被

3、動語態(tài)的對比時態(tài)主動語態(tài)被動語態(tài)般現(xiàn)在時am / is / are + PP(1 ) Do they speak French ?(2 ) They dont use the room Is French spoken by them ?The room isnt used by them 一般過去時was / were + p.p.(1) The hunter killed a tige(2 )He wrote many stories last year A tiger was killed by the hunter.Many stories was written by him las

4、t yea現(xiàn)在進行時am / is / are +being +p.p.(1) These workers are building a new bridge (2 )He is men ding his car A new bridge is being built by these workers His car is being mended by him過去進行時(1 )He was selling books Books were being built by himwas / were + being + p.p.(2 ) They were discussing the plan at that time The plan was being discussed by them at that time .現(xiàn)在