Walk into any busy restaurant kitchen at dinner service and you will feel it: a wall of hot, greasy exhaust air being thrown out through the hood, while at the same time the make-up air unit is burning energy to condition cold outside air being pulled in to replace it. That is two HVAC loads fighting each other \u2014 and it is one of the largest hidden energy leaks in a food-service building. An \u7a7a\u6c14-\u7a7a\u6c14\u6362\u70ed\u5668<\/a> \u5728\u4efb\u4e00\u80a1\u6c14\u6d41\u79bb\u5f00\u5efa\u7b51\u56f4\u62a4\u4e4b\u524d\uff0c\u5c06\u70ed\u91cf\u4ece\u6392\u51fa\u6392\u98ce\u6d41\u8f6c\u79fb\u5230\u6d41\u5165\u9001\u98ce\uff0c\u4ece\u800c\u95ed\u5408\u8fd9\u4e00\u56de\u8def\u3002<\/p>\n A typical commercial kitchen exhausts 2,000\u20138,000 CFM of air at 90\u2013140 \u00b0F (32\u201360 \u00b0C), laden with moisture and cooking odors. Mechanical codes require make-up air roughly equal to exhaust, so the building is continuously discarding conditioned heat and paying to re-condition replacement air. In cold-climate winters this doubles the heating bill; in summer it adds latent load to the cooling coil. Recovering even 50\u201370% of that sensible heat turns a pure expense into a recovered asset.<\/p>\n \u539f\u7406\u7b80\u5355\uff1a\u6392\u98ce\u4e0e\u9001\u98ce\u4e24\u80a1\u6c14\u6d41\u7a7f\u8fc7\u56de\u6536\u82af\u4f53\uff0c\u70ed\u91cf\u5728\u4e0d\u6df7\u5408\u7684\u524d\u63d0\u4e0b\u4ece\u70ed\u6d41\u8de8\u5230\u51b7\u6d41\u3002\u4e09\u79cd\u82af\u4f53\u4e3b\u5bfc\u53a8\u623f\u5e94\u7528\uff1a<\/p>\n \u5bf9\u591a\u6570\u53a8\u623f\uff0c\u56fa\u5b9a\u677f\u5f0f\u673a\u7ec4\u662f\u6700\u4f73\u70b9\uff1a\u9ad8\u663e\u70ed\u6548\u7387\u3001\u4f4e\u7ef4\u62a4\uff0c\u4e14\u6cb9\u817b\u6392\u98ce\u4e0e\u6d01\u51c0\u9001\u98ce\u95f4\u65e0\u4ea4\u53c9\u6c61\u67d3\u8def\u5f84\u3002<\/p>\n \u663e\u70ed\u6548\u7387\u662f\u5173\u952e\u6570\u503c\u3002\u5178\u578b\u7a33\u5b9a\u503c\uff1a<\/p>\n \u6ce8\u610f\uff1a\u5e26\u6cb9\u8102\u7684\u6392\u98ce\u5728\u5230\u8fbe\u56de\u6536\u82af\u4f53\u524d\uff0c\u987b\u7ecf\u8fc7 UL \u8ba4\u8bc1\u96c6\u70df\u7f69\u3001\u901a\u5e38\u8fd8\u6709\u9884\u8fc7\u6ee4\u5668\uff1b\u82af\u4f53\u672c\u8eab\u5e94\u53ef\u901a\u8fbe\u4ee5\u4fbf\u5b9a\u671f\u51b2\u6d17\u3002<\/p>\n \u591a\u6570\u673a\u68b0\uff0f\u80fd\u6e90\u89c4\u8303\uff08IECC\u3001ASHRAE 90.1 \u53ca\u5730\u65b9\u7b49\u540c\u89c4\u8303\uff09\u5982\u4eca\u8981\u6c42\u53a8\u623f\u6392\u98ce\u5728\u8d85\u8fc7\u98ce\u91cf\u9608\u503c\uff08\u901a\u5e38\u4e3a\u7ea6 1,000\u20131,500 CFM\uff09\u65f6\u8fdb\u884c\u80fd\u91cf\u56de\u6536\u2014\u2014\u9664\u975e\u6709\u4e66\u9762\u4f8b\u5916\u3002\u5373\u4fbf\u975e\u5f3a\u5236\uff0c\u70ed\u56de\u6536\u4e5f\u80fd\u5f3a\u5316\u516c\u7528\u4e8b\u4e1a\u8fd4\u5229\u7533\u8bf7\u3002\u4e24\u6761\u7ecf\u9a8c\u6cd5\u5219\uff1a<\/p>\n \u5bf9\u4e8e\u5bd2\u51b7\u6c14\u5019\u4e0b\u6392\u98ce\u7ea6 4,000 CFM \u7684\u4e2d\u578b\u9910\u5385\uff0c\u56de\u6536 70% \u7684\u663e\u70ed\u901a\u5e38\u53ef\u5c06\u4f9b\u6696\u80fd\u8017\u964d\u4f4e 30\u201345%\uff0c\u5e76\u7f29\u77ed\u8865\u98ce\u52a0\u70ed\u76d8\u7ba1\u3002\u6210\u5957\u677f\u5f0f\u56de\u6536\u673a\u7ec4\u7684\u5b89\u88c5\u6210\u672c\u901a\u5e38\u53ef\u5728\u4ee5\u4e0b\u671f\u9650\u5185\u6536\u56de\uff1a 1.5\u20133 \u5e74<\/strong> \u4ec5\u901a\u8fc7\u71c3\u6c14\/\u7535\u529b\u8282\u7701\u5373\u53ef\u6536\u56de\uff0c\u5728\u6709\u516c\u7528\u8bbe\u65bd\u6fc0\u52b1\u7684\u5730\u533a\u66f4\u5feb\u3002\u5728\u708e\u70ed\u6f6e\u6e7f\u7684\u6c14\u5019\u4e2d\uff0c\u51b7\u5374\u76d8\u7ba1\u7684\u51cf\u8d1f\u540c\u6837\u5177\u6709\u5f88\u9ad8\u7684\u4ef7\u503c\u3002<\/p>\n \u4ece\u6240\u9762\u4e34\u7684\u98ce\u91cf\u4e0e\u6e29\u6e7f\u5ea6\u6ce2\u52a8\u51fa\u53d1\uff0c\u518d\u6743\u8861\u7ef4\u62a4\u53ef\u8fbe\u6027\u4e0e\u6cb9\u6c61\u66b4\u9732\u3002\u82e5\u60f3\u8981\u4e00\u53f0\u4f4e\u7ef4\u62a4\u3001\u80fd\u5904\u7406\u591a\u6570\u53a8\u623f\u8d1f\u8377\u7684\u5355\u673a\uff0c\u56fa\u5b9a\u5f0f\u9006\u6d41\u677f\u5f0f\u7a7a\u6c14-\u7a7a\u6c14\u6362\u70ed\u5668\u662f\u9ed8\u8ba4\u63a8\u8350\u3002\u82e5\u6e7f\u5ea6\u56de\u6536\u4e5f\u662f\u6cd5\u89c4\u6216\u8212\u9002\u5ea6\u9a71\u52a8\u56e0\u7d20\uff0c\u5219\u5347\u7ea7\u5230\u5168\u70ed\uff08\u7113\uff09\u8f6e\u3002<\/p>\n \u6211\u4eec\u4e3a\u5546\u4e1a\u53a8\u623f\u3001\u9910\u5385\u548c\u98df\u54c1\u5de5\u5382\u8bbe\u8ba1\u5e76\u63d0\u4f9b\u7a7a\u6c14-\u7a7a\u6c14\u70ed\u56de\u6536\u673a\u7ec4\u2014\u2014\u677f\u5f0f\u3001\u8f6c\u8f6e\u5f0f\u548c\u7ed5\u7ba1\u5f0f\u914d\u7f6e\u3002\u544a\u77e5\u60a8\u7684\u6392\u98ce CFM\u3001\u6c14\u5019\u53ca\u96c6\u70df\u7f69\u5e03\u5c40\uff0c\u6211\u4eec\u5c06\u8fd4\u56de\u5305\u542b\u6548\u7387\u4e0e\u6295\u8d44\u56de\u6536\u671f\u7684\u9009\u578b\u5efa\u8bae\u3002 \u8054\u7cfb\u6211\u4eec\u7684\u5de5\u7a0b\u56e2\u961f<\/a> \u83b7\u53d6\u65b9\u6848\uff0c\u6216\u6d4f\u89c8 \u70ed\u56de\u6536\u4ea7\u54c1\u7ebf<\/a>.<\/p>\n Why recover heat from kitchen exhaust?<\/strong> How is grease handled so the exchanger stays clean?<\/strong> What savings can be expected?<\/strong> Does it help with make-up air balancing?<\/strong>Why Kitchen Exhaust Is a Hidden Energy Leak<\/h2>\n
How Air-to-Air Heat Recovery Works in a Kitchen<\/h2>\n
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Energy Recovery Efficiency You Can Expect<\/h2>\n
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\n \n\u82af\u4f53\u7c7b\u578b<\/th>\n \u663e\u70ed\u6548\u7387<\/th>\n \u5168\u70ed\uff08\u542b\u6e7f\u5ea6\uff09<\/th>\n \u6700\u4f73\u9002\u914d<\/th>\n<\/tr>\n<\/thead>\n \n \u56fa\u5b9a\u677f\u5f0f\uff08\u9006\u6d41\uff09<\/td>\n 65\u201380%<\/td>\n \u4ec5\u663e\u70ed<\/td>\n \u591a\u6570\u53a8\u623f\u3001\u5bd2\u51b7\u6c14\u5019<\/td>\n<\/tr>\n \n \u65cb\u8f6c\u8f6e\uff08\u5168\u70ed\uff09<\/td>\n 70\u201385%<\/td>\n \u662f\uff08\u9664\u6e7f\u5242\uff09<\/td>\n \u6f6e\u6e7f\u6c14\u5019\u3001\u4e25\u683c\u89c4\u8303<\/td>\n<\/tr>\n \n \u95f4\u63a5\u5f0f\u5faa\u73af\u76d8\u7ba1<\/td>\n 50\u201365%<\/td>\n \u53ef\u9009<\/td>\n \u7ba1\u9053\u76f8\u8ddd\u8fdc<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n Code Compliance and Make-Up Air<\/h2>\n
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Payback Period for a Typical Restaurant<\/h2>\n
Choosing the Right Exchanger<\/h2>\n
Need a Sized Proposal?<\/h2>\n
\u5e38\u89c1\u95ee\u9898<\/h2>\n
Hoods throw out hot, greasy air while make-up air units condition cold outside air to replace it, so the building pays to heat and cool the same energy twice. Recovery captures the exhaust heat and returns it to the incoming air.<\/p>\n
Effective systems place the recovery core after the grease extractor and use easily cleanable plates or a run-around loop, with access for regular washing sized to the kitchen duty.<\/p>\n
By preheating make-up air with recovered exhaust heat, kitchens cut the heating and often the cooling load on the make-up air unit, with savings scaling with hood run hours.<\/p>\n
Yes. Pre-conditioned make-up air is closer to indoor temperature, which helps balance kitchen pressure and reduces drafts and comfort complaints at the same time.<\/p>\n