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style="font-family:SimSun;font-size:16px;">建冷库时该如何选择供电¾pȝ»ŸåQŸéšç€¾læµŽå‘展åQŒæˆ‘们的生活水åã^在提高,对冷å†Õd†·è—é£Ÿå“çš„需求量日益加大。而对食品的安全意识及要求的日益加强,也成为食品冷铄¡‰©‹¹ç³»¾lŸå‘展的契机åQŒä½œä¸ºå†·é“„¡‰©¾lŸçš„核心—冷库的å»ø™®¾æ­£åœ¨˜q…速增加。冷库对电能的需求相当可观,我国的能源åŞ势却不容乐观åQŒè¿‘òq´æ¥å…¨å›½2/3的地区出çŽîC¸åŒç¨‹åº¦çš„电力紧张。因此降低能耗,节约能源åQŒå®žçŽ°å¯æŒç®‹å‘展ã€?/span> </p> <p> <span style="font-family:SimSun;font-size:16px;">  å¸¸åˆ¶å†·åŽ‹¾~©æœºç”±åˆ¶å†·å·¥è‰ºç¡®å®šï¼Œæœ‰èžºæ†å¼æœºç»„和活塞式机组。螺杆式压羃机可以实现制冷量的无¾U§è°ƒèŠ‚,相比‹zÕd¡žå¼åŽ‹¾~©æœºå¯ä»¥è¾‘Öˆ°ä¸€å®šçš„节能功效。目前普遍采用的能量调节方式是滑阀调节åQŒå³åœ¨èžºæ†åŽ‹¾~©æœºçš„机体上åQŒå®‰è£…一调节滑阀åQŒé€šè¿‡æ»‘阀的移动改变压¾~©æœºé˜´é˜³è½¬å­çš„有效工作长度,以达到能量调节的目的åQŒè°ƒèŠ‚范围一般是10%ï½?00%内的无çñ”调节。调节过½E‹ä¸­åQŒåŠŸçŽ‡ä¸Žè¾“气量在50%以上的负药‚¿è¡Œæ—¶å‡ ä¹Žæ˜¯æˆæ­£æ¯”关系åQŒä½†åœ?0%以下æ—Óž¼Œæ€§èƒ½¾pÀL•°åˆ™ä¼šå¤§å¹…度下降,其能效比下降显著åQŒæ˜¾å¾—经‹¹Žæ€§è¾ƒå·®ã€‚因此部分负荷下的能效比要低于满负荷时的能效比。这是由于电æœø™{速åƈ未改变,造成在滑阀调节˜q‡ç¨‹ä¸­ï¼Œè€—电功率较大。通过采用变频器,利用变频器内¾|®çš„PID调节器,对压¾~©æœºçš„吸入口压力˜q›è¡ŒæŽ§åˆ¶åQŒä‹É之维持不变。吸入口压力与吸入口温度存在一定的对应关系åQŒé‡‡ç”¨å˜é¢‘器控制该压力维持恒定不变,则吸入口的温度也¾l´æŒæ’定不变åQŒè¿›è€Œä‹É制冷机对于冷冻负载的变动始终以接˜q‘设计条件的高效率进行运行,使制冷压¾~©æœºå§‹ç»ˆ˜qè¡Œåœ¨æœ€ä½³ç‚¹åQŒä»Žè€Œå®žçŽ°èŠ‚能的目的ã€?/span> </p> <p> <span style="font-family:SimSun;font-size:16px;"> 供配ç”늳»¾lŸè®¾è®¡æ˜¯ç”‰|°”设计的核心部分,供配ç”늳»¾lŸè®¾è®¡çš„合理性对甉|°”讑֤‡æŠ•èµ„、运行及½Ž¡ç†æœ‰ç›´æŽ¥åª„响。电气系¾lŸçš„能耗由配电¾pȝ»ŸæŸè€—和变压器损耗组成,又可分äؓ可变损耗和固定损耗两部分åQ›å˜åŽ‹å™¨çš„铁损、配ç”늺¿è·¯åŠç”µå®¹å™¨çš„介质损耗、äÈA表及互感器的铁损½{‰åªè¦æŽ¥é€šç”µæºå°±ä¼šäñ”生,是固定损耗,其大ž®ä¸Žç”µåŽ‹å’Œé¢‘率有养I¼Œ¾U¦å ¾pȝ»ŸæŸè€—çš„10%~20%åQ›å˜åŽ‹å™¨çš„铜损、配ç”늺¿è·¯çš„铜损与负èïLŽ‡ã€ç”µ¾|‘电压等因素有关åQŒæ˜¯å¯å˜æŸè€—,¾U¦å ¾pȝ»ŸæŸè€—çš„80%~90%。因此,在安全、可靠的前提下供配电¾pȝ»Ÿçš„经‹¹Žæ€§å’Œåˆç†æ€§æ˜¯æ•´ä¸ª¾pȝ»Ÿ¾læµŽã€åˆç†çš„关键ã€?/span> </p> <p> <span style="font-family:SimSun;font-size:16px;">供电电压½{‰çñ”及配变电所位置的选择</span> </p> <p> <span style="font-family:SimSun;font-size:16px;"> 配电¾pȝ»Ÿçš„损耗与甉|ºç”µåŽ‹æœ‰ç›´æŽ¥å…³¾p»ï¼Œå¯¹äºŽç›¸åŒé•¿åº¦ä¸Žæˆªé¢çš„配电¾U¿èµ\输送功率相同时其线路损耗与电压的åã^æ–ÒŽˆåæ¯”。因此采用较高配ç”는µåŽ‹æ·±å…¥è´Ÿè·ä¸­å¿ƒï¼Œ¾~©çŸ­ä½ŽåŽ‹ä¾›ç”µåŠå¾„åQŒå³å¯ä»¥å‡å°‘¾U¿èµ\损耗,˜q˜å¯ä»¥å‡ž®‘电压降åQŒä¿è¯ä¾›ç”µè´¨é‡ã€‚因此供ç”는µåŽ‹ç­‰¾U§åŠé…å˜ç”‰|‰€ä½ç½®çš„确定应æ ÒŽ®ä¾›ç”µå®šw‡ã€è´Ÿè·ä‹É用情况及当地ç”늽‘状况åQŒå…¼™å‘ÖˆæœŸæŠ•èµ„、运行管理费用等因素¾l¼åˆè€ƒè™‘ã€?/span> </p> <p> <span style="font-family:SimSun;font-size:16px;">合理选择ç”늼†</span> </p> <p> <span style="font-family:SimSun;font-size:16px;"> 配电¾U¿èµ\的损耗也是不容忽视的。由于配ç”늺¿è·¯å­˜åœ¨ç”µé˜»ï¼Œç”‰|µé€šè¿‡æ—¶å°±ä¼šäñ”生损耗,ž®å·¥½E‹ä¼šæœ‰ä¸Šä¸‡ç±³çš„配¾U¿ï¼Œå¤§å·¥½E‹åˆ™ä¼šæ›´å¤šï¼Œå…¶æŸè€—是相当可观的。线路损耗与其负载电‹¹å’Œ¾U¿èµ\电阻有关åQŒæ ¹æ®æˆ‘国经‹¹Žç›®å‰çš„发展状况åQŒå³è¦é‡è§†æŠ•èµ„控制也要重视运行成本的节约åQŒä‹É二者有机的¾lŸä¸€ã€?/span> </p> <p> <span style="font-family:SimSun;font-size:16px;"><img src="http://www.ylwopt.buzz/uploads/news/20190718033305.png" /><br /> </span> </p></p> </div> <div class="tag">相关标签åQ?a href='/key.aspx?k=%bd%a8%c0%e4%bf%e2'>建冷åº?/a>,</div> <div class="pre"><div>下一æ?<a href="120.html">冷库设计商家介绍大蒜冷库设计的方æ³?/a></div> </div> <div class="news_related"> <div class="xg_tit">相关新闻</div> <ul> <li><a href="/news/121.html" title="建冷库时该如何选择供电¾pȝ»ŸåQ? rel="nofollow">建冷库时该如何选择供电¾pȝ»ŸåQ?..</a><span>2019-07-18</span></li> <li><a href="/news/118.html" title="建冷库商家介¾låŒæ¸©å†·åº“有哪些特点åQ? 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