在一个多用途多户高层氡
I have a client that is trying to sell a condo and the home inspection revealed an elevated radon level. The lender is requiring the radon to be remediated. Simple fix on a single family home on a crawl. I was thinking an ERV may do the trick. Any ideas, anyone heard of similar issues in multifamily construction?
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答复
我从未听说过稀释作为氡污染的解决方案。它始终需要在地面或板块下方的负压脱离。在高氡区域中，子板或爬行空间周边管道上的被动堆叠将室内氡放在95％的情况下，在4个PCI / L阈值下方。
在多层建筑物中，较高的内部堆叠效果将在基础上产生更强的吸力，并且在足迹上减轻了更为重要的。
我怀疑室内空气交换（没有本机中没有任何内容？）必须过度控制氡，并将具有高能源成本。
谢谢罗伯特 - 感觉简单的解决方案可能不起作用。我惊讶于，在这个规模项目的设计阶段，没有考虑这一点。很多本地理论都说它可能是建筑物中的混凝土，这就是为什么我认为单个单元解决方案可能是可能的。听起来这可能会成为一个重大修复。
不确定是否存在现有的新空气交易所，大约十年前建造或未建造
Danny,
In a single-family residence, Peter Yost successfully used a dilution strategy to lower indoor radon levels. Although this approach isn't as good as sub-slab depressurization, it's worth considering. Read more here:
//m.etiketa4.com/homes/deep-energy-makeover-one -stepoftime.
Thanks Martin. Interesting that the radon level remained the same in the crawl but went down in the house. I guess the dilution did not do much good in the crawl but the fact that there was a negative pressure in the crawl from the exhaust fan prevented the crawl air (and radon) from entering the home. After reading this - do not think my ERV idea will work unless it is on a very high CFM and then like robert said, will be wasting a lot of energy. Back to the drawing board - Thanks.
HRV's or ERV's will work as a radon solution for low levels of radon (say up to 7-8 pCi/L) only. Higher levels of radon require too much air exchange to dilute the radon to levels below the EPA Action Level of 4.0 pCi/L. The higher the air exchange level the higher the heating or cooling penalty will be.
我建议联系认证的氡助长者讨论其他解决方案，如“亚板坯减压系统” - 这是解决大多数氡问题的最具成本效益的方法。公寓的每个单元可能都不需要系统。仔细测试和良好的系统设计“可能”解决了单个风扇和多个吸力点的建筑物的问题。不要通过电话接受报价，并需要从缓解员的网站访问，因为这比单个家庭住宅更复杂。
Check with your Sate Dept. of Health to speak to the Radon person to find out local radon issues & find a certified mitigator.
祝你好运！
如果“认证的氡气仪”认为稀释是一种解决方案，即使在EPA“行动水平”中也是一种致癌问题，那么这个人的需求是具有更多经验和常识和更少虚假的“认证”的人。
这是一个修改后的答案，后我重读了原始问题并看到了你的崛起很高。（请参阅答案＃5。）一个好的缓幕师必须仔细研究您的情况，这意味着测试多个单位和多个楼层以确定源。
HRV's or ERV's will work as a radon solution for low levels of radon (say up to 7-8 pCi/L) only. Higher levels of radon require too much air exchange to dilute the radon to levels below the EPA Action Level of 4.0 pCi/L. The higher the air exchange level the higher the heating or cooling penalty will be. However in a high rise they may need to be a part of the solution.
高层建筑物在上层上氡可以通过不正确密封的冷空气管道，从地下室绘制氡气的冷空气管道，将氡气升起并将其分配到上层。电梯轴可以是将氡达到居民的水平的途径。
仔细测试和良好的系统设计“可能”解决了单个风扇和多个吸力点的建筑物的问题。不要通过电话接受报价，并需要从缓解员的网站访问，因为这比单个家庭住宅更复杂。
Check with your Sate Dept. of Health to speak to the Radon person to find out local radon issues & find a certified mitigator.
宾夕法尼亚州的宾夕法尼亚州有一个伟大的减灾者，被称为Bill Broadhead，我知道拥有高层氡问题的经验（他教导了我在主题上参加的课程）。致电宾夕法尼亚州的健康部门，氡群，他们可以让你与他联系。
祝你好运！
Re：评论＃6.是的，EPA有时说：“污染的解决方案是稀释的”。
HRV和ERV的使用是减少低氡水平的有效技术！
They are not the most commonly used technique. Their use is described & was first governed by the EPA Document, "Radon Mitigation Standards", (EPA 402-R-078, Revised April 1994). para. # 14.8 HVAC Installation Requirements.
Currently the ASTM International Standard E-2121, "Standard Practice for installing Mitigation Systems in Existing Low-Rise Residential Buildings", para. # 7.3.15 Heat Recovery Ventilation (HRV) is the governing document for the mitigation industry. Under Note 4 of E-2121 it states: "HRV as a method for radon control is recommended only when an active soil depressurization system cannot be used, and the initial air exchange rate is low enough to indicate a high probability of success".
如果您对基于博客的氡评论有任何疑问，请联系您所在的州氡办公室或与认证的Radon专业人士联系。