Regulating Indoor Air Temperatures with a Heat Pump
我们生活在5A区，我们的冬季有时会达到-10F。借助我们的天然气炉，在晚上将我们泄漏的老屋（1921）房屋加热到60 f，晚上50F和45F时，似乎有效。我们在毯子下面睡得很好。
I’m planning to DIY install a mini split system now to condition a previously unconditioned space, and we were thinking of also putting an interior unit in each bedroom. That would let us set the baby’s room to a much higher temperature, and also have air conditioning for the few hot summer nights that we get. But I have two issues:
1.人们喜欢告诉您，热泵无法有效处理温度的步骤变化。这是为什么？这是一个控制器问题吗？恒温器宣布紧急情况舒适，并且压缩机变为超速驱动器？是由从制冷剂管道中去除热量的速率引起的吗？我是否可以通过一次安排一个区域的温度步骤来避免超重，以便第一间卧室会要求30k室外单元的7kbtu，然后一旦温暖第二卧室要求加热等等？
2. LG’s thermostats are supposedly programmable for between 60F-80F. What’s a man to do when his wife wants it 50F?
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Replies
热泵效率取决于外部温度和室内温度之间的差异很大。因此，如果您每天仅加热几个小时，最有效的事情是在一天中最温暖的一天中运行热泵。效率最高的是在外面最冷时运行它。在一天中的温暖部分中运行更多的小时可能比一天中最冷的小时更少。通常，人们按时间表跑步时，他们要求在最低效率的时间要求最大的热量 - 例如，要求惠普在凌晨6点加热房屋。
> That would let us set the baby’s room to a much higher temperature,
Elevated sleeping temperature is a risk factor for SIDS, which is most common in babies born in the winter. Check with your pediatrician but my recollection is that babies should sleep in a room in the 60's.
您有消息来源吗？对我来说，婴儿似乎非常冷。我知道SIDS可能是存在的最微妙的话题之一，但是我对冬天出生的小岛屿发展中国家和婴儿的理解更与毯子和婴儿窒息有关。如果空气温度为72，这将不再令人担忧。
从https://www.cuh.nhs.uk/maternity/oving-home/caring-for-your-baby/reducing-risk-cot-death（N.B. 16摄氏度约为61 f，20摄氏度约为68 f。
In my personal experience, an undershirt in addition to pajamas almost always resulted in the baby being too warm (waking up sweaty and miserable), even on nights that seemed pretty cold to me. Baby blankets are typically very light, so if you have a heavier quilt or something, adjust.
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不要让宝宝太热或太冷。理想情况下，室温应在16至20度之间。（见下表）。
室温床上用品
14°C sheet plus three or four layers of blankets
16°C薄板加三层毯子
18°C sheet plus two layers of blankets
20°C薄板加一两层毯子
22°C sheet plus one layer of blankets or sheet only
24°C表
Bedding guidelines for babies wearing a nappy, vest and babygro.
这对我很有趣。这与美国推荐的不同。这里几乎所有的东西都推荐了68-72 F，并且不在婴儿身上放任何毯子。
除了乘员健康之外，没有太多的气候使内部寒冷并不是在建筑物组件内和建筑物组件中造成水分问题的可能原因。
I would think in an old leaky building that would be less of an issue.
That's true.
"1. People love to tell you that heat pumps can’t handle step changes in temperature efficiently. Why is that? "
如果恒温器设置高于当前空气温度，大多数热泵都有电阻加热元件，将会出现。电阻元件的运作成本是3倍。
Heat pumps do heat air more slowly than furnaces. The air coming out of a heat pump will be 15-25° warmer than the air going in. So if your house is 50° your heat pump will blow 75° air at best and most furnaces will blow 130° air.
I believe heat pumps work best when you set the thermostat to one temperature 24 /7.
很少有恒温器允许低设定点，因为担心如果恒温器看到50°，外墙中的管道很容易被冻结，并且可以确信陪审团的制造商应支付损失。
I think you should spend some quality time with a calking gun and stop up the air leaks.
Walta
当热泵可以调节以控制空间中的温度时，这基本上意味着它们一直在运行，但在加热水平的水平上，它们是最有效的。典型的炉子已饱满或饱满，并且在运行时会产生很多热量。在工程中，我们称此为“ PWM”，用于脉冲宽度调制。传递的总能量是“ ON”时间下的面积，因此更长的时间意味着更多的能量进入了该空间。即使瞬时温度始终在目标温度上徘徊，并且在目标温度下徘徊，但在多个短时间内传递了大量能量，以保持空间的平均温度。
热泵喜欢以不同的容量水平连续运行以符合空间的需求。这意味着他们可以一直提供低量的能量，以保持相对恒定的平均温度，而在目标上方和下方几乎没有徘徊。
如果您尝试在短时间内变化太大，则超出了热泵的容量，并且它会踢出电阻辅助热，以便在合理的时间内尝试达到目标温度。这使您超出了设备的最佳效率范围。
Temperatures below 50F are risky because that thermostat is only seeing the temperature where it's located, and it's entirely possible, even probable, that there are areas that are lower than that temperature -- especially on or inside of exterior walls. If you really want to fake out a thermostat to run things cooler, you can try putting a small incandescent (not LED) lamp under the thermostat to fake the thermostat into seeing a warmer than actual temperature. The result will be the room temperature will be kept a little lower. This is something you have to play with experimentally to get right, so it's not an optimal solution.
我同意沃尔塔（Walta）的观点，即进行一些空气密封工作可能会有很大的帮助。热泵在密封良好的空间中最有效，在那里它们可以调节以控制温度，而不会因风中的空气泄漏而大大摆动。
Bill
Heat pumps are sensitive to large changes in the thermostat setting or sudden large changes in outside air temperature, or even possibly room temperature changes because it forces the system to use what is termed emergency heat or auxiliary heat, which can be the same thing for most heat pump systems. It is like trying to heat your house with a large 15 Amp toaster...the type where you push the toast down and see the coils glow. It is very energy inefficient and it is really there to keep hot air coming into the house temporarily while the outside heat pump runs in defrost mode, meaning it is running like an air conditioner to reject heat to the outside coils to defrost them, so it is producing cold air that those toaster oven coils have to rapidly heat. So small changes minimize those toaster oven coils from kicking on. As far as you wife wanting 50 F from a 60 F thermostat, maybe you could recalibrate your thermostat to think 50F is 60F?
>这是一个控制器问题吗？恒温器宣布紧急舒适性，压缩机变为超速驾驶？
假设全功率模式（VS Overdrive）。通常比部分功率模式效率低。通常，您可以通过非常放慢的调整恒温器来避免问题 - 因此，没有足够的错误使其“声明紧急情况”。
使用热泵从大量降低的另一个方面是设备的容量。坦率地说，我不知道是否在空气源热泵中，是否在单独的断路器（或可以禁用）上，电阻加热线圈是否在单独的断路器上。我自己的系统是GSHP，我将断路器放在阻力备用加热的情况下（我需要十年，当水阀发生故障时）。但是，对于任何热泵，容量通常由设计热负荷确定，几乎没有或没有过多的容量。当将热量泵入房屋以从温度大量下降中恢复时，一部分热量是通过外壳稳步离开的，只有多余的东西可以提高内部空气和结构质量的温度。因此，一个热泵缺少典型的燃烧系统的典型超大尺寸，无法以任何速度迅速恢复温度下降的速度，就像发射热系统一样。从大量降低的温度下降可能需要几个小时，比所需的时间更长。这就是为什么您会听到热泵的恒温器建议：“设置和忘记”。
只是要成为“那个家伙”，从技术上讲，加热元素就将近100％的电力转化为热量，而不是经济的哈哈。
我仍然喜欢肩膀季节或卧室的踢脚板加热元素，您只需要一点热量。